Contact devices and systems

Abstract

The present invention relates to a contact device and to a system, the contact device having a shielding spring and a first contact shell, wherein the first contact shell extends at least in sections along a longitudinal axis, wherein a shielding spring unit is electrically and mechanically connected to the first contact shell and forms a conductive shell of a contact system, wherein the shielding spring unit has a first shielding spring and a second shielding spring which is arranged in a twisted manner in a circumferential direction around the longitudinal axis relative to the first shielding spring, wherein the first shielding spring and the second shielding spring engage with each other in sections and abut against each other in an axial manner.

Description

Technical Field

[0001] The invention relates to a contact device according to claim 1 and to a system according to claim 15 . Background Art

[0002] A spring clip for shielding an electrical plug connection is known from DE 10 2014 10 254 B3.

[0003] The problem underlying the present invention is to provide an improved contact device and an improved system. Summary of the invention

[0004] The above mentioned problem is solved by a contact device according to claim 1 and a system according to claim 15. Advantageous embodiments are specified in the dependent claims.

[0005] It has been recognized that it is possible to provide an improved contact device for a system, in that the contact device has a shielding spring unit and a first contact housing, wherein the first contact housing extends at least in sections along a longitudinal axis. The shielding spring unit is electrically and mechanically connected to the first contact housing and forms a conductive housing of a contact system (e.g. a control device). The shielding spring unit has a first shielding spring and a second shielding spring, the second shielding spring being arranged to be twisted in a circumferential direction about the longitudinal axis relative to the first shielding spring, wherein the first shielding spring and the second shielding spring engage with each other in sections and abut against each other in an axial manner.

[0006] This configuration has the advantage that the shielding spring unit can be produced particularly simply and cost-effectively, for example by a punching and bending process from a flat sheet metal part with few method steps, for example a single punching step and a single bending step.

[0007] In another embodiment, the first contact housing has an engagement portion extending along the longitudinal axis. The engagement portion preferably has a rectangular configuration at the outer circumferential side in cross section. The first shielding spring has at least one first spring portion and at least one second spring portion connected to the first spring portion. The first spring portion contacts the engagement portion on the inner side and mechanically connects the first contact housing to the first shielding spring. The second spring portion is arranged radially outwardly relative to the first spring portion about the longitudinal axis and has a contact surface for electrically contacting the housing at the outer circumferential side. The advantage of this configuration is that tolerance compensation is provided between the first contact housing and the housing by the shielding spring unit.

[0008] In another embodiment, the first shielding spring has an attachment portion having an aperture, wherein an aperture profile of the aperture and an outer circumferential side of the engagement portion are formed to correspond to each other in at least a segmented manner to prevent twisting, wherein the first spring portion is connected to the attachment portion at the aperture profile, and the second spring portion is connected to the outer circumferential side of the attachment portion. The attachment portion may be formed as a plane and extend in a plane perpendicular to the longitudinal axis.

[0009] In another embodiment, the first shielding spring has several first spring parts, which are arranged to be spaced apart from each other, wherein the first spring parts are preferably arranged to run parallel to each other. The first recess is arranged outside the engagement part. It is advantageous if at least two first spring parts are arranged to abut against each other and engage together with the first recess in the circumferential direction.

[0010] Alternatively, the first contact housing may have a first recess for each first spring portion, wherein the first spring portions are each respectively engaged with the associated first recess. In this case, the recess may be formed in a groove shape.

[0011] In another embodiment, the first spring portion is at least partially oriented to be inclined radially inwardly parallel or obliquely relative to the longitudinal axis. The second spring portion is at least partially arranged to be obliquely inclined relative to the longitudinal axis and to extend radially outwardly.

[0012] In another embodiment, the first spring portion and the second spring portion are arranged axially on a common side of the attachment portion.

[0013] In another embodiment, the first shielding spring has several second spring parts which are spaced apart from each other in the circumferential direction about the longitudinal axis, wherein the second spring parts are preferably formed identically to each other. Each second spring part has a contact surface for contacting the housing on the outer circumferential side.

[0014] In another embodiment, the contact device has a second contact housing, which has a socket, wherein the engagement portion and the first spring portion engage with the socket. The second spring portion extends radially and is spaced apart from the outer circumferential side of the second contact housing on the outside. The advantage of this configuration is that there is sufficient construction space for the deflection of the second spring portion between the circumferential side of the second contact housing and the second spring portion.

[0015] In another embodiment, the attachment portions of the two shielding springs are each arranged in the axial direction between an offset portion of the first contact housing and a second contact housing, the offset portion being coupled to the engagement portion in the axial direction. The axial position of the shielding spring unit is fixed by the shielding spring unit touching-contacting on the face side of the second contact housing and / or by further touching-contacting on the offset portion. As a result, an unexpected axial displacement of the shielding spring unit in the axial direction during mounting of the contact device on the housing is prevented.

[0016] In another embodiment, the second shielding spring has at least a third spring portion and a fourth spring portion connected to the third spring portion, wherein the third spring portion engages through the first shielding spring in the axial direction and electrically and mechanically connects the second shielding spring to the first contact housing.

[0017] In another embodiment, the fourth spring portion and the second spring portion are arranged on a common track running around the longitudinal axis and are formed to contact the housing. As a result, the shielding spring unit has a circular configuration on the circumference, whereby the through-hole in the housing is particularly simple and economical to form as an aperture with a circular cross-section. As a result, in a particularly advantageous configuration of the housing, the housing is divided into two half-shells which abut against each other on both sides of the through-hole so that a circular through-hole is defined when the two half-shells are assembled together.

[0018] In another embodiment, the second spring portion and the fourth spring portion are arranged at regular intervals in the circumferential direction. As a result, a uniform shielding behavior is provided in the circumferential direction.

[0019] In another embodiment, the first shielding spring and the second shielding spring are formed identical to each other. The hermaphroditic configuration of the shielding springs allows a particularly cost-effective production of the shielding spring unit, since the shielding springs can be produced as identical parts using a single machine without changing tools.

[0020] In another embodiment, the first shielding spring is formed in one piece and in a materially homogeneous manner and preferably contains steel, in particular spring steel with elastic properties and / or a copper alloy. In order to fix a predetermined stiffness and / or spring properties of the spring part in a defined manner, reinforcing geometries, for example in the form of beads, embossings, upturned edges, etc., can also be provided at the spring part.

[0021] Additionally, or alternatively, the first contact housing is formed in an electrically conductive manner, wherein the first contact housing is formed to attach and shield an electrical contact, in particular a coaxial contact, at least in sections.

[0022] A system has the contact device described above and an electrically shielded housing, wherein the housing has a through hole, wherein an engaging portion engages through the through hole and a shielding spring engages for configuring an electrical contact to the housing against the through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be explained in more detail below with reference to the accompanying drawings. In the accompanying drawings:

[0024] Figure 1 shows a perspective view of a system with a contact device, a printed circuit board and a housing;

[0025] Figure 2 Shown through Figure 1 The system shown, along Figure 1 A cross-sectional view of section AA is shown;

[0026] Figure 3 shows a top view of a first shielding spring;

[0027] Figure 4 shows a spring through the first shield, along Figure 3 A cross-sectional view of the cutting plane BB shown;

[0028] Figure 5 shows a spring through the first shield, along Figure 3 A cross-sectional view of the cutting plane CC shown;

[0029] Figure 6 shows a perspective view of a shield spring unit;

[0030] Figure 7 shows another perspective view of the shield spring unit;

[0031] Figure 8 shows a spring unit passing through the shield, along Figure 6 A cross-sectional view of the cutting plane DD shown;

[0032] Fig. 9 Shown through Figure 1 The control device shown, along Figure 1 A cross-sectional view of the cutting plane EE is shown. DETAILED DESCRIPTION

[0033] For easier understanding, the following figures refer to a coordinate system. The coordinate system has an x-axis (longitudinal direction), a y-axis (lateral direction) and a z-axis (height direction). The coordinate system is formed as a right-handed system as an example.

[0034] Figure 1 A perspective view of a control device formed as a system 10 is shown, the control device having a contact device 15, a printed circuit board 20 and a housing 25. For ease of illustration, Figure 1The housing 25 is depicted only in a symbolic manner.

[0035] The housing 25 delimits a housing interior 30. The printed circuit board 20 is arranged in the housing interior 30. The printed circuit board 20 is formed in a plate-like manner and extends in the xy plane. Electrical components, in particular transmitters and / or receivers for high-frequency signals (in particular in the range of 0.1 to 100 GHz, in particular in the range of 0.1 to 20 GHz) can be arranged on the printed circuit board 20. Components that generate signals with another frequency spectrum (for example in the range from 0 to 0.1 GHz) can also be arranged on the printed circuit board 20. The transmitter and / or receiver are electrically connected to the contact device 15 via the printed circuit board 20.

[0036] The housing 25 has a first through hole 35. As an example, the first through hole 35 has a circular cross section. In an embodiment, the housing 25 can be formed in two parts and has a first housing part 40 and a second housing part 45 arranged on the lower side of the first housing part 40. The housing parts 40, 45 are formed as half shells. The first housing part 40 and the second housing part 45 together define the housing interior 30, the housing parts 40, 45 abut against each other at the first through hole 35, and the first through hole 35 is arranged on both sides of the first housing part 40 and the second housing part 45 in a segmented manner.

[0037] The housing 25 is made of a conductive substance, such as zinc-copper die-cast metal or zinc die-cast metal. The housing 25 electrically shields the printed circuit board 20 and thus the components arranged on the printed circuit board 20 (e.g., a transmitter and / or a receiver) from the surrounding environment 50 of the system (e.g., the control device 10).

[0038] The contact device 15 for transmitting the high-frequency signal generated by the component has at least one coaxial contact 90, preferably several coaxial contacts 90. Each coaxial contact 90 has a shielding contact 95, which circumferentially electrically shields the signal contact 100. In this case, the shielding contact 95 is electrically insulated from the signal contact 100 and is arranged coaxially relative to the signal contact 100.

[0039] The contact device 15 has a first contact housing 55, a second contact housing 60 and a shielding spring unit 65. As an example, the first contact housing 55 has several attachment feet 70, by which the first contact housing 55 is mechanically connected to the printed circuit board 20 and preferably electrically connected to the printed circuit board 20 to ground.

[0040] The attachment foot 70 (preferably several attachment feet 70) engages with the printed circuit board 20. In the housing part 125, the first contact housing 55 has a basic shape that is substantially cuboid. The first contact housing 55 has a conductive substance, preferably a copper substance, in particular a zinc-copper substance. For example, the first contact housing 55 can be manufactured by die-casting metal. At the first face side 110, the first face side 110 is arranged on the side of the first contact housing 55 facing the first through hole 35, and the first contact housing 55 is connected to the second contact housing 60 and the shielding spring unit 65. The first face side 110 is formed as a plane as an example and extends in the yz plane. The first face side 110 is arranged parallel to the plane in which the first through hole 35 is arranged. The first contact housing 55 is arranged in a segmented manner in the housing interior 30.

[0041] The second contact housing 60 is arranged outside the housing interior 30 and is formed as a coding cap in the embodiment. The second contact housing 60 preferably has an electrically insulating material. The material of the coding cap can also be electrically conductive. The second contact housing 60 has a socket 80, which has a further contact device 85 (in Figure 1 A further contact device 85 can be inserted into the socket 80 on a side facing away from the first contact housing 55 to configure an electrical contact to the coaxial contact 90 .

[0042] Figure 2 Shown through Figure 1 The control device 10 shown, along Figure 1 A cross-sectional view of section AA is shown.

[0043] The shielding contact 95 is electrically connected to the first contact housing 55 and is grounded via the first contact housing 55. In this case, the coaxial contacts 90 protrude beyond the first face side 110 of the first contact housing 55 at the face side and extend parallel to the longitudinal axis 115. The longitudinal axis 115 is arranged parallel to the x-axis. The further contact device 85 is inserted into the socket 80 along the longitudinal axis 115, wherein the further contact device 85 is configured to make electrical contact to the coaxial contacts 90, preferably to all the coaxial contacts 90.

[0044] The first contact housing 55 has a joint portion 116 between the coaxial contact 90 and the first face side 115. At the first outer circumferential side 120, the joint portion 116 has a substantially rectangular configuration in a cross section perpendicular to the longitudinal axis 115. In this case, the joint portion 116 can be formed to be rounded at the side edges. The joint portion 116 and the housing portion 125 are formed integrally and in a materially uniform manner.

[0045] On the side facing away from the coaxial contact 90, the housing part 125 is joined to the engagement portion 116. The housing part 125 of the first contact housing 55 delimits a contact housing interior 130 and has a retainer 135 for fixing an electrical connection, not shown, between the coaxial contact 90 and the printed circuit board 20 arranged in the contact housing. The attachment foot 70 is arranged on the housing part 125 on the lower side.

[0046] The shell portion 125 is formed in a substantially rectangular parallelepiped shape and is formed wider in the lateral direction and in the height direction than the engaging portion 116. On the first face side 115, an offset 140 is formed at a transition between the first outer circumferential side 120 of the engaging portion 116 and the shell portion 125.

[0047] The second contact housing 60 has, in addition to the socket 80, a further socket 145 on the longitudinal side facing the first contact housing 55. The further socket 145 is separated from the socket 80 by a wall 150 on the face side, on the side facing the socket 80, wherein a second through hole 155 of each coaxial contact 90 is arranged in the wall 150, through which the coaxial contact 90 is engaged. The wall 150 extends substantially in the yz plane. The further socket 145 is open on the side facing the first contact housing 55. The engagement portion 116 engages with the further socket 145.

[0048] Additionally, a catch member 160 may be provided, wherein the catch member 160 attaches the first contact housing 55 on the engagement portion 116 to the second contact housing 60 on the further socket 145 in a form-fitting manner. The further socket 145 and the engagement portion 116 match each other so that a twisting of the second contact housing 60 relative to the engagement portion 116 about the longitudinal axis 115 is prevented.

[0049] The shielding spring unit 65 has a first shielding spring 165 and a second shielding spring 170, and the second shielding spring 170 is twisted around the longitudinal axis 115, preferably twisted by 90°. The first shielding spring 165 can be formed to be identical to the second shielding spring 170. The first shielding spring 165 can also be formed to be different from the second shielding spring 170. The second shielding spring 170 and the first shielding spring 165 are engaged with each other in a segmented manner and abut against each other at least axially. As a result, in addition to the mechanical connection by which the two shielding springs 165, 170 are engaged with each other, the first shielding spring 165 is also electrically connected to the second shielding spring 170. The shielding spring unit 65 is arranged on the outside of the engagement portion 116 and thereby abuts against the engagement portion 116, and also abuts against the offset portion 140, so that the shielding spring unit 65 is electrically connected to the first contact housing 55.

[0050] Figure 3 A top view of the first shielding spring 165 is shown.

[0051] The first shielding spring 165 has at least one first spring portion 175 , one first attachment portion 180 and at least one second spring portion 185 .

[0052] The first shielding spring 165 is integrally formed and the material is uniformly formed, wherein preferably the first spring portion 175, the first attachment portion 180 and the second spring portion 185 are manufactured by stamping and bending methods, preferably made of a flat plate. The first shielding spring 165 preferably contains at least steel (especially spring steel) or a copper alloy.

[0053] The first attachment portion 180 extends substantially in the yz plane and is formed as a plane. As an example, the aperture 190 is arranged in a central position in the first attachment portion 180. The aperture 190 has a substantially rectangular basic shape. In this case, the corner area of ​​the aperture 190 can be formed as a circle. The aperture 190 has an aperture profile 195, wherein the aperture profile 195 is formed to correspond to (at least laterally) the first outer circumferential side 120 of the engagement portion 116 in an at least segmented manner, as a result of which the first shielding spring 165 is provided with a protection against twisting relative to the engagement portion 116.

[0054] As an example, in Figure 3 On the upper and lower sides of the aperture profile 195, the first spring portions 175 are connected to the first attachment portion 180 by means of the first fixing end 200. In this case, several first spring portions 175 arranged in a first row 206 are arranged at regular intervals from one another on the upper side 205 of the aperture profile 195. The upper side 205 in this case extends in the xy plane. The first spring portions 175 extend substantially over a major part of the first maximum width b1 of the aperture 190. In this case, a first number of first spring portions, for example five first spring portions 175, are arranged in an embodiment. The minimum interval a between the first spring portions 175 is less than the second maximum width b1 of the first spring portions 175 in the transverse direction.

[0055] In the height direction, spaced apart from the upper side 205, the aperture profile 195 has a lower side 210 running parallel to the upper side 205. At the lower side 210, a second row 211 of first spring portions 175 is arranged opposite in the height direction to the first row 206 of first spring portions 175, wherein each individual first spring portion 175 is arranged directly opposite in the height direction. The first number of first spring portions 175 in the second row 211 is the same as the first number of first spring portions 175 in the first row 206.

[0056] The upper side 205 is connected to the lower side 210 by a first side surface 215 and a second side surface 220 of the aperture profile 195, which are each formed as a plane as an example. The side surfaces 215, 220 each extend in an xz plane, which is arranged offset in the lateral direction.

[0057] In an embodiment, the first shielding spring 165 has a third row 235 of second spring portions 185 on the radial outside and a fourth row 240 of second spring portions 185 arranged in the circumferential direction relative to the third row 235. As an example, the third row 235 and the fourth row 240 extend over an angular segment of approximately 30° and each have an equal second number of second spring portions 185. As an example, the second number is greater than the first number of first spring portions 175. In this case, the third row 235 and the fourth row 240 are arranged on a common track 230 around the longitudinal axis 115.

[0058] Additionally, a connecting portion 245 may be provided between the second spring portion 185 and the first attachment portion 180 formed as a plane, wherein the connecting portion 245 is formed in a substantially conical manner. In an embodiment, the second spring portion 185 is connected to the first attachment portion 180 via the connecting portion 245 through the second fixed end 225. The connecting portion 245 may also be omitted so that the second spring portion 185 is directly connected to the first attachment portion 180 through the second fixed end 225.

[0059] The second outer circumferential side 250 has a first portion 255 and a second portion 260. The first portion 255 is formed as a plane and is oriented to run parallel to the first side surface 215. The second portion 260 is formed as a plane and is oriented to run parallel to the second side surface 220. The first side surface 215 of the second outer circumferential side 250 and the first portion 255 define a first web portion 265 of substantially constant width, and the second side surface 220 and the second portion 260 together define a second web portion 270 of substantially constant width. The first web portion 265 and the second web portion 270 connect the upper side 205 to the lower side 210.

[0060] Figure 4 shows passing through the first shield spring 165, along Figure 3 A cross-sectional view of the cutting plane BB is shown.

[0061] The first spring portion 175 and / or the second spring portion 185 may each be formed like a bar spring. In addition, the first spring portion 175 and the second spring portion 185 are axially arranged on a common side of the first attachment portion 180 .

[0062] In the installed state, the first spring portion 175 extends substantially parallel to the longitudinal axis 115. In the uninstalled state (eg Figure 4 As shown in FIG. 2 , the free end 275 may be spaced less from the longitudinal axis 115 than the first fixed end 200 . Internally, the first spring portion 175 has a first contact surface 280 .

[0063] The second spring portion 185 is formed to be curved. In this case, the second spring portion 185 extends radially outward in an arc-shaped manner and is arranged to run obliquely with respect to the longitudinal axis 115. The second spring portion 185 has a second contact surface 290 on the third outer circumferential side 285.

[0064] As an example, in the longitudinal direction, the first spring portion 175 is formed shorter than the second spring portion 185. Of course, it is also conceivable that the first spring portion 175 has the same length as the second spring portion 185 in the length direction or is formed longer than the second spring portion 185.

[0065] Figure 5 shows passing through the first shield spring 165, along Figure 3 A cross-sectional view of the cutting plane CC is shown.

[0066] The second spring portions 185 are arranged to be distributed on the rail 230 at regular intervals in the third row 235 and / or the fourth row 240. In this case, the independent second spring portions 185 are arranged to be separated from each other by gaps 295 formed in a V shape.

[0067] The second spring portions 185 are formed identically to each other, and are arranged to be spaced apart from each other at regular intervals in the circumferential direction about the longitudinal axis 115 .

[0068] The first spring portion 175 has a restraining member 300 on a side facing the first web portion 265 and / or the second web portion 270. The restraining member 300 may also be omitted. The restraining member 300 is coupled to the first fixing end 200 in the height direction. In this case, the restraining member 300 is formed in a rectangular shape. The restraining member 300 is provided so that the first shielding spring 165 can be punched out from a flat metal plate by a stamping and bending method. The restraining member 300 is not provided at another first spring portion 175 arranged between the first spring portions 175, so that the first spring portion 175 is formed in a substantially rectangular shape.

[0069] Additionally, a projection 305 extending over the entire width of the first spring portion 175 in the transverse direction can be provided in the longitudinal direction, approximately at the mid-height. The projection 305 is shown as an indentation from the outside. The projection 305 extends from the outside inwards and serves to reinforce the first spring portion 175. Apart from the restraint 300, the first spring portions 175 are formed identically to one another. Furthermore, the first spring portions 175 run parallel to one another.

[0070] Figure 6 A perspective view of the shielding spring unit 65 is shown.

[0071] The first shielding spring 165 and the second shielding spring 170 are formed to be identical to each other, wherein hereinafter, for easier understanding, the first spring portion 175, which is used for the second shielding spring 170 and is described in the context of the first shielding spring 165, is referred to as the third spring portion 310; the first attachment portion 180, which is used for the second shielding spring 170 and is described in the context of the first shielding spring 165, is referred to as the second attachment portion 315; and the second spring portion 185, which is used for the second shielding spring 170 and is described in the context of the first shielding spring 165, is referred to as the fourth spring portion 320.

[0072] The second shielding spring 170 is arranged to be twisted in the circumferential direction about the longitudinal axis 115 relative to the first shielding spring 165, preferably twisted by 90°, wherein the third spring portion 310 of the second shielding spring 170 engages the aperture 190 through the first shielding spring 165. In this case, the third spring portion 310 can abut against the side surfaces 215, 220 via the fourth outer circumferential side 325. By arranging the two rows of third spring portions 310 opposite each other, the position of the second shielding spring 170 is fixed relative to the first shielding spring 165 in the lateral direction.

[0073] The second spring portion 185 and the fourth spring portion 320 are arranged to run on the common track 230 around the longitudinal axis 115. In this case, the fourth spring portion 320 is arranged radially outside the first portion 255 and the second portion 260 of the first shielding spring 165 and is guided past the side of the web portions 265, 270.

[0074] By making the first shielding spring 165 and the second shielding spring 170 identically configured, the shielding spring unit 65 can be produced in a particularly cost-effective manner. In addition, the two shielding springs 165, 170 are complementary, so that the spacing between the two second spring portions 185 in the circumferential direction is the same as the spacing between the second directional portion 185 and the fourth spring portion 320.

[0075] Figure 7 Another perspective view of the shielding spring unit 65 is shown.

[0076] In this case, at the rear, the second attachment portion 315 of the second shielding spring 170 abuts against the first attachment portion 180 of the first shielding spring 165, so that the shielding spring unit 65 is formed to be particularly flat in the axial direction. In addition, through the contact between the first attachment portion 180 and the second attachment portion 315, the two shielding springs 165, 170 are electrically connected to each other.

[0077] Figure 8 It is shown that the shield spring unit 65 is passed through, along Figure 6 A cross-sectional view of the cutting plane DD is shown.

[0078] In the mounted state on the engagement part 116 , the projection 305 is located on the outer circumferential side 120 of the engagement part 116 and ensures contact with the outer circumferential side 120 .

[0079] Fig. 9 Shown through Figure 1 The system 10 shown, along Figure 1 A cross-sectional view of the cutting plane EE is shown.

[0080] The first contact housing 55 has a first recess 330 at the engagement portion 116, the first recess 330 engaging the offset portion 140 in the longitudinal direction, wherein the first recess 330 is formed in a groove shape and has a longitudinal length in the longitudinal direction substantially equal to that of the first spring portion 175. The first recess 330 is arranged around the engagement portion 116 as a groove that circulates in the circumferential direction around the longitudinal axis 115. When the contact device 15 is in the mounted state, the first spring portion 175 of the first shielding spring 165 and the third spring portion 310 of the second shielding spring 170 engage with the first recess 330, so that the radial position of the shielding spring unit 65 is fixed at the engagement portion 116.

[0081] The axial position of the shielding spring unit 65 is fixed by the second shielding spring 170, which abuts against the offset portion 140 at the face side via the second attachment portion 315. In the axial direction about the longitudinal axis 115, the first attachment portion 180 of the first shielding spring 165 abuts against the second face side 335 running parallel to the first face side 110. By hooking the second contact housing 60 with the first contact housing 55, the axial position of the shielding spring unit 65 is thereby fixed.

[0082] On the inner circumferential side 340 of the other socket 145, a second recess 345 is arranged, wherein the second recess 345 is joined in the longitudinal direction to the second face side 335. The second recess 345 is formed as a step on the inner circumferential side 340. In this case, the second recess 345 has substantially the same longitudinal extent as the first recess 330 relative to the longitudinal axis 115.

[0083] When the contact device 15 is in the mounted state, the first spring portion 175 and the third spring portion 310 engage with the first recess 330 and engage with the second recess 345. In this case, the first spring portion 175 or the third spring portion 310 abuts against the recess base 350 of the first recess 330 via the first contact surface 280 and forms an electrical contact to the recess base 350, and thus forms an electrical contact with the first contact housing 55.

[0084] Furthermore, the first spring portion 175 and the third spring portion 310 engage with the second recess 345 , wherein the second recess 345 is used to provide tolerance compensation between the first spring portion 175 and the third spring portion 310 and the inner circumferential side 340 .

[0085] The second spring portion 185 and the fourth spring portion 320 are arranged to be spaced apart from the fifth outer circumferential side 355 of the second contact housing 60. The spring portions 175, 185, 310, 320 extend in a direction of the second contact housing 60 in the longitudinal direction away from the first contact housing 55.

[0086] When the contact device 15 is in the mounted state in the control device 10, at the second contact surface 290, the second spring portion 185 and the fourth spring portion 185 form an electrical contact to the housing 25 at the first through hole 35, and as a result, the housing 25 is electrically connected to the first contact housing 55 via the shielding spring unit 65. As a result, reliable grounding is ensured between the housing 25 and the first contact housing 55. In addition, by the electrical connection of the first contact housing 55 to the shielding contact 95, reliable shielding of the signal contact 100 is ensured, and thereby reliable shielding of the signal to be transmitted via the signal contact 100 is ensured.

[0087] By means of the above-described configuration of the contact device 15, the contact device 15 itself is on the one hand particularly easy to manufacture and install, and on the other hand the contact device 15 can provide a particularly good electrical contact to the housing 25. As a result, Figures 1 to 9 The contact device 15 shown is particularly suitable for transmitting signals in the gigahertz range, in particular in the range of 0.1 to 100 GHz, in particular in the range of 0.1 to 20 GHz. In addition, in this case, a reliable contact is obtained between the first contact housing 55 formed as a substantially rectangular engagement portion 116 or a rectangle and the first through hole 35 formed as a circle. The complexity of the production of the contact device 15 can be reduced by dividing into two shielding springs 165, 170 formed as hermaphroditic. The tool for manufacturing the shielding spring unit 65 is also particularly simple to form.

[0088] exist Figures 1 to 9In the illustrated refinement of the contact device 15, the dimensions, in particular the number of spring sections 175, 185, 310, 320, can be selected differently. It is also conceivable to arrange the second spring section 185 and the fourth spring section 320 on an elliptical path or a rectangular contour or a rhombus contour. The fourth spring section 320 can also be arranged radially outside or radially inside relative to the second spring section 185. Of course, a greater number of shielding springs 165, 170 can also be provided that complement the shielding spring unit 65. Thus, for example, it is also conceivable to provide three or four shielding springs 165, 170, which are arranged on the one hand to be twisted to each other and on the other hand to engage with each other.

[0089] Through the above configuration, reliable shielding of 360° can be ensured both by the first spring portion 175 and the third spring portion 310 and by the second spring portion 185 and the fourth spring portion 320 .

[0090] Reference numerals list

[0091] 10 System, control equipment

[0092] 15 Contact device

[0093] 20. PCB

[0094] 25 Shell

[0095] 30 Inside the housing

[0096] 35 First through hole

[0097] 40 first housing part

[0098] 45 Second housing part

[0099] 50 Surroundings

[0100] 55 First contact housing

[0101] 60 Second contact housing

[0102] 65 Shield spring unit

[0103] 70 Attaching feet

[0104] 75 Side

[0105] 80 socket

[0106] 85 Another contact device

[0107] 90 Coaxial Contact

[0108] 95 Shield contact

[0109] 100 Signal contacts

[0110] 110 First side

[0111] 115 longitudinal axis

[0112] 116 Joint

[0113] 120 First outer circumferential side (of the engagement portion)

[0114] 125 Shell

[0115] 130 Contact with the inside of the housing

[0116] 135 Retainer

[0117] 140 offset

[0118] 145 Another socket

[0119] 150 wall

[0120] 155 Second through hole

[0121] 160 buckle member

[0122] 165 First shield spring

[0123] 170 Second shielding spring

[0124] 175 First spring part

[0125] 180 first attachment portion

[0126] 185 Second spring part

[0127] 190 Aperture

[0128] 195 Aperture Profile

[0129] 200 First fixed end

[0130] 205 upper side

[0131] 206 First line

[0132] 210 Lower side

[0133] 211 Second row

[0134] 215 first side surface

[0135] 220 second side surface

[0136] 225 Second fixed end

[0137] 230 tracks

[0138] 235 Third row

[0139] 240 Fourth row

[0140] 245 Connection part

[0141] 250 Second outer circumferential side of the attachment portion

[0142] 255 First part of the outer circumference side

[0143] 260 Part 2

[0144] 265 First web part

[0145] 270 Second belly plate part

[0146] 275 Free end

[0147] 280 First contact surface

[0148] 285 Third outer circumference side

[0149] 290 Second contact surface

[0150] 295 Gap

[0151] 300 Constraints

[0152] 305 Bump

[0153] 310 Third spring part

[0154] 315 Second attachment part

[0155] 320 Fourth spring part

[0156] 325 Fourth outer circumference side

[0157] 330 First recess

[0158] 335 Second side

[0159] 340 Inner circumference side

[0160] 345 Second recess

[0161] 350 concave base

[0162] 355 Fifth outer circumference side

[0163] b1 first maximum width

[0164] b2 second maximum width

[0165] a Minimum interval

Claims

1. A contact device (15) having a shielding spring unit (65) and a first contact housing (55), wherein the first contact housing (55) extends at least in sections along a longitudinal axis (115), wherein the shielding spring unit (65) is electrically and mechanically connected to the first contact housing (55) and forms a conductive housing (25) of the contact system (10), It is characterized in that The shielding spring unit (65) has a first shielding spring (165) and a second shielding spring (170), the second shielding spring (170) being arranged in a twisted manner in a circumferential direction around the longitudinal axis (115) relative to the first shielding spring (165), The first shielding spring (165) and the second shielding spring (170) are engaged with each other in a segmented manner and abut against each other in an axial manner.

2. The contact device (15) according to claim 1, wherein the first contact housing (55) has an engagement portion (116) extending along the longitudinal axis (115), wherein the engagement portion (116) has a rectangular configuration in cross section at the outer circumferential side (120), wherein the first shielding spring (165) has at least one first spring portion (175) and at least one second spring portion (185) connected to the first spring portion (175), wherein the first spring portion (175) electrically contacts the engagement portion (116) on the inner side and mechanically connects the first contact housing (55) to the first shielding spring (165), The second spring portion (185) is arranged radially outward relative to the first spring portion (175) about the longitudinal axis (115), and has a contact surface (290) on the outer circumferential side (285) for contacting the housing (25).

3. The contact device (15) according to claim 2, wherein the first shielding spring (165) has an attachment portion (180) having an aperture (190), wherein the aperture contour (195) of the aperture (190) and the outer circumferential side (120) of the engagement portion (116) are formed corresponding to each other in at least a segmented manner to prevent twisting, wherein the first spring portion (175) is connected to the attachment portion (180) at the aperture profile (195), and The second spring portion (185) is connected to the outer circumferential side (250) of the attachment portion (180).

4. The contact device (15) according to claim 3, wherein the first shielding spring (165) has a plurality of first spring portions (175) spaced apart from each other, wherein the first spring portions (175) are arranged to run parallel to each other, wherein the first recess (330) is arranged on the outer side of the engaging portion (116), At least two first spring portions (175) are arranged adjacent to each other and are jointly engaged with the first recess (330) in the circumferential direction.

5. The contact device (15) according to any one of claims 2 to 4, wherein the first spring portion (175) is oriented at least in sections to be inclined radially inwardly parallel or obliquely relative to the longitudinal axis (115), The second spring portion (185) is arranged at least in sections to be obliquely inclined relative to the longitudinal axis (115) and to extend radially outward.

6. The contact device (15) according to any one of claims 3 to 4, The first spring portion (175) and the second spring portion (185) are axially arranged on a common side of the attachment portion (180).

7. The contact device (15) according to any one of claims 2 to 4, wherein the first shielding spring (165) has a plurality of second spring portions (185), the second spring portions being spaced apart from one another in the circumferential direction with respect to the longitudinal axis (115), wherein the second spring portions (185) are formed identically to each other, Each of the second spring portions (185) has a contact surface (290) on the outer circumferential side (285) for contacting the housing (25).

8. The contact device (15) according to any one of claims 2 to 4, It has a second contact housing (60) having a socket (145), wherein the engagement portion (116) and the first spring portion (175) engage with the socket (145), The second spring portion (185) extends radially and is spaced apart from an outer circumferential side (355) of the second contact housing (60) on the outside.

9. The contact device (15) according to claim 8, wherein the attachment portions (180) of the two shielding springs (165, 170) are each arranged between the offset portion (140) of the first contact housing (55) and the second contact housing (60) in the axial direction, the offset portion (140) being coupled to the engagement portion (116) in the axial direction, The axial position of the shielding spring unit (65) is fixed by the shielding spring unit (65) contacting the surface side (335) of the second contact housing (60) and / or by further contacting the shielding spring unit (65) on the offset portion (140).

10. The contact device (15) according to any one of claims 2 to 4, wherein the second shielding spring (170) has at least one third spring portion (310) and a fourth spring portion (320) connected to the third spring portion (310), The third spring portion (310) engages through the first shielding spring (165) in the axial direction and electrically and mechanically connects the second shielding spring (170) to the first contact housing (55).

11. The contact device (15) according to claim 10, The fourth spring portion (320) and the second spring portion (185) are arranged on a common track (230) running around the longitudinal axis (115) and are formed to contact the housing (25).

12. The contact device (15) according to claim 10, The second spring portion (185) and the fourth spring portion (320) are arranged at regular intervals in the circumferential direction.

13. The contact device (15) according to any one of claims 1 to 4, The first shielding spring (165) and the second shielding spring (170) are formed identically to each other.

14. The contact device (15) according to any one of claims 1 to 4, wherein the first shielding spring (165) is formed integrally and in a materially homogeneous manner and comprises steel or a copper alloy, and / or wherein the first contact housing (55) is formed in a conductive manner, The first contact housing (55) is formed to attach and shield the electrical contact in at least a segmented manner.

15. The contact device (15) according to claim 14, wherein: The steel is spring steel.

16. The contact device (15) according to claim 14, wherein: The first contact housing (55) is formed to attach and shield the coaxial contact (90) in at least a segmented manner.

17. A system (10), It has a contact device (15) according to any of the preceding claims and an electrically shielding housing (25), The housing (25) has a through hole (35). The first contact housing has an engagement portion extending along the longitudinal axis, the engagement portion (116) passing through the through hole (35) and engaging with the shielding spring (165, 170) to be configured to electrically contact the housing (25) against the through hole (35).

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