PLUG SYSTEM

Abstract

To provide a plug-in system with a plug-in part (1) and a receiver part (101), in which a plug-in part housing of the plug-in part (1) is inserted into a receiver part contact chamber (121) which is bounded externally by a receiver part housing of the receiver part (101), such that a plug-in part contact surface (61) of a plug-in part contact (15) of the plug-in part (1) is in contact with a receiver part contact surface (145) of a receiver part contact (115) of the receiver part (101), and in which the plug-in part contact surface (61) and the receiver part contact surface (145) are pressed against each other by means of a pressing force applied by a screw arrangement of the plug-in system (1000), preferably in its tightened state, by means of which a higher electrical power can be transmitted,The housing base body (105) of the receiving part housing has an access opening for rotary actuation of the screw, and the screw assembly has a protective cap (211) as a contact protection element, which is connected to the screw head (207) on the side of the screw head (207) facing away from the screw shank (203), wherein the receiving part (101) has an access sleeve (109) which is arranged on the outside of the housing base body (105) of the receiving part (101) and defines an outer sleeve opening which is aligned with the access opening, and wherein the plug-in system (1000) has a sealing cap (221).

Description

Technical field

[0001] The present invention relates to a plug-in system. State of the art

[0002] A modern, electrically powered vehicle has a charging socket with an AC and / or DC interface. The vehicle's traction battery can be charged via this socket, with a high amount of electrical energy being transferred through the DC interface. For this purpose, the charging socket is electrically connected to the vehicle's high-voltage double rail system. This high-voltage double rail system is, in turn, electrically connected to the traction battery. To simplify the installation of the charging socket, the electrical connection between the charging socket and the high-voltage double rail system is established via a plug-in system. This plug-in system consists of a plug and a receiver, with the plug connecting to the receiver to create the connection.However, this plug system has a disadvantageous high electrical contact resistance, so that only a relatively low electrical power can be transmitted with this plug system.

[0003] German patent application EP 3 664 225A1 discloses a high-current connector comprising an input and an output section. German patent application DE 10 2015 209 301A1 discloses a socket for receiving a multi-phase plug. German patent application DE 10 2021 123 635 discloses a mechanical high-current connection clamping screw device for a high-current electrical connection. German patent application DE 11 2023 000 967 discloses a connection structure for wiring materials. Description of the invention

[0004] The object of the invention is therefore to provide a plug-in system by means of which a higher electrical power can be transmitted.

[0005] This problem is solved by the features of the independent claim. Advantageous embodiments of the invention are specified in the dependent claims, the following description, and the figures.

[0006] The invention proposes a plug-in system comprising a plug-in part and a receiver part, wherein a plug-in part housing is inserted into a receiver part contact chamber, which is externally bounded by a receiver part housing of the receiver part, such that a plug-in part contact surface of a plug-in part contact of the plug-in part is in contact with a receiver part contact surface of a receiver part contact of the receiver part, and wherein the plug-in part contact surface and the receiver part contact surface are pressed against each other by means of a pressing force applied by a screw arrangement of the plug-in system, preferably in its tightened state. Because the contact surfaces of the plug-in system are pressed against each other under the influence of the pressing force, the plug-in system exhibits a very low contact resistance. Thus, a significantly higher electrical power can be transmitted by means of the plug-in system.

[0007] For clarification only, the following applies: A plug-in component can be assigned a plug-in axis that extends perpendicularly to a housing base of the receiving component housing. A positive direction of the plug-in axis can point towards a housing base of the receiving component housing. Alternatively or additionally, a receiving component can be assigned a receiving component axis that extends perpendicularly to a housing base of the plug-in component housing. A positive direction of the receiving component axis can point towards the housing base of the plug-in component housing. In the plug-in system, the plug-in axis can extend coaxially to the receiving component axis, whereby the positive direction of the plug-in axis can point in the opposite direction to the positive direction of the receiving component axis.Alternatively or additionally, for better guidance during the manufacture of the plug-in system, it can be provided that an outer circumferential surface of the housing base of the plug-in part housing, preferably flat and / or substantially, rests against an inner circumferential surface of the housing base of the receiving part housing.

[0008] For clarification, it should be noted that the tightened state of the screw assembly refers to a state in which the screw assembly applies the pressing force. This is to be distinguished from the loose state of the screw assembly, in which no pressing force is applied by the screw assembly and / or no elongation occurs in the screw assembly.

[0009] In order to achieve a high pressing force in the plug-in system and thus a high power transmission capacity of the plug-in system, a preferred embodiment provides that the pressing force acts, preferably substantially, at right angles to the plug-in contact surface and / or the receiving part contact surface, and / or that the screw arrangement extends, preferably substantially, at right angles to the plug-in contact surface and / or the receiving part contact surface.

[0010] In order to manufacture the screw assembly using standard parts and therefore cost-effectively, an exemplary embodiment provides that the screw assembly has a screw and a screw nut, and that the screw has a screw head, a screw shank and a shank collar attached to the screw shank and preferably spaced apart from the screw head, and that the plug-part contact and the receiving part contact are pressed together under the influence of the pressing force between the shank collar and the screw nut.

[0011] In order to achieve a high pressing force, in an exemplary embodiment it is provided that the shaft collar has a contact surface facing the plug part contact, wherein it is provided that the shaft collar with its contact surface is pressed against the plug part contact, preferably directly and / or electrically conductively.

[0012] In order to implement electrical contact protection in the plug-in system in a particularly simple and effective way, it is preferably provided that the diameter of the shaft collar in the plane in which the bearing surface also extends is larger than the diameter of a shaft section of the screw shaft that extends between the screw head and the shaft collar.

[0013] In order to manufacture the screw with the shank collar as simply and cost-effectively as possible, a preferred embodiment provides that the shank collar is made of the same material and / or is integrally connected to the screw shank, and / or that the shank collar is pushed and / or screwed onto the screw shank, and preferably rests against a shoulder of the screw shank or a stop point of the screw shank, wherein it is preferably provided that the shank collar, preferably an internal thread of the shank collar, engages in threaded engagement with the screw shank, preferably an external thread of the screw shank.

[0014] In order to ensure that the plug-in part can be inserted into the receiving part contact space even when the screw arrangement is already connected to the receiving part, a preferred embodiment provides that the plug-in part contact is assigned a contact recess which is at least partially limited to the outside by the plug-in part contact and / or is open in the positive insertion axis direction of the plug-in part insertion axis, and / or that a base body recess of the plug-in part housing is assigned to a base body of the plug-in part housing which is limited to the outside by the base body of the plug-in part housing and / or is open in the positive insertion axis direction of the plug-in part insertion axis.

[0015] In order to enable a mechanically stable and reliably sealable plug connection between the plug part and the receiving part, an exemplary embodiment provides that a housing base body of the plug part housing, a housing base of the plug part housing and a housing outer sleeve of the plug part housing define an annular groove circumferentially around the housing base body, wherein it is preferably provided that the annular groove is open in the positive plug axis direction of the plug part plug axis.

[0016] To prevent the ingress of, for example, dirt and / or dust and / or moisture into the plug-in contact space and / or into the receiver contact space, it is provided, by way of example, that a sealing element, preferably ring-shaped, is arranged in the annular groove, wherein it is provided that the sealing element in the plug-in system seals a gap between the housing base body of the plug-in part housing, preferably an outer circumferential surface of the housing base body of the plug-in part housing, and a housing base body of the receiver part housing, preferably an inner circumferential surface of the housing base body of the receiver part housing.

[0017] In order to achieve reliable protection against contact with regard to electrical safety, an exemplary embodiment provides that a housing base body of the receiving part housing has an access opening for rotary actuation of the screw, and that the screw arrangement has a protective cap as a contact protection element, which is connected to the screw head on the side of the screw head facing away from the screw shank, preferably in such a way that the screw head cannot be directly touched via the access opening, and preferably that the material of the protective cap is an electrically non-conductive and / or electrically insulating material.

[0018] In order to be able to see and / or feel from the outside during the manufacture of the plug-in system whether the screw assembly is correctly in its tightened state, an exemplary embodiment provides that the receiving part has an access sleeve which is arranged on the outside of the housing base of the receiving part and which defines an outer sleeve passage which is aligned with the access passage, and that the plug-in system has a sealing cap which is designed and / or suitable so that the sealing cap, preferably when the plug-in part is fully inserted into the contact space of the receiving part, can only be fully slid onto the access sleeve and / or brought into a positive locking connection with the outer circumferential surface of the access sleeve if the screw assembly is in its tightened state.

[0019] The sealing element can extend circumferentially, preferably completely, around the housing body of the plug-in component housing. All described sealing elements can each be formed by a profile seal. Alternatively or additionally, the material of the sealing elements can be elastically deformable, preferably an elastomer. Character description

[0020] Advantageous embodiments of the invention are explained in more detail below with reference to the accompanying figures. These show: Fig. 1 in a perspective view a plug-in part for a plug-in system; Fig. 2 in a side section view the plug-in part; Fig. 3 in a perspective view a receiving part for the plug-in system; Fig. 4 in a side-section view the recording part; Fig. 5 in a side sectional view showing a plug arrangement comprising the plug part and the receiving part, and Fig. 6 in a side section view the plug-in system in which the plug-in part and the receiving part are in plug-in and press connection.

[0021] In the Fig. 1 and Fig. 2 is a plug part 1 for one, in the Fig. Figure 6 shows a plug system 1000 for an electrically powered vehicle. The plug component 1 has a plug component housing with a housing base 5, a housing bottom 7 and a housing outer sleeve 9 (see in particular Figure 6). Fig. 2). In addition, the plug-in part 1 has a central rib, a guide rib, and a plug-in contact 15, preferably formed by a flat contact (see in particular). Fig. 2) and a sealing element 17, preferably ring-shaped. The plug-in contact 15 is shown, by way of example, as a cuboid strip. The plug-in contact 15 is not directly connected to the housing base 5, but only to the housing base 7.

[0022] The housing base 5, together with the housing bottom 7, defines a plug-in contact space 21 (see in particular Fig. 2) The plug-in contact chamber 21 is completely closed by the housing base 7 in the negative plug-in axis direction of a plug-in axis SS of the plug-in 1, with the exception of a passage for the plug-in contact 15. In the positive plug-in axis direction (indicated by the arrowhead) of the plug-in axis SS, the plug-in contact chamber 21 is open. In the Fig. 1 and Fig. In the embodiment of the plug-in part 1 shown in Figures 2, 5 and 6, the housing base body 5 is formed by an exemplary rectangular tube.

[0023] The housing base 7 projects radially outward beyond the housing body 5 with respect to the plug-in axis SS. The housing outer sleeve 9 is arranged radially outside the housing body 5 with respect to the plug-in axis. The housing outer sleeve 9 extends from the housing base 7 in the positive direction of the plug-in axis. The housing outer sleeve 9 is significantly shorter than the housing body 5 with respect to the plug-in axis SS. The housing outer sleeve 9, the housing base 7, and the housing body 5 together define an annular groove 23 that completely encircles the housing body 5. The annular groove 23 is open in the positive direction of the plug-in axis.

[0024] The sealing element 17 is arranged in the annular groove 23. The sealing element 17 extends circumferentially around the housing base 5 over the entire length of the annular groove 23. The sealing element 17 is attached, here only by way of example, to an outer circumferential surface of the housing base 5. The material of the sealing element 17 is elastically deformable. Preferably, the material of the sealing element 17 is an elastomer.

[0025] The housing body 5 has a cover wall 25 and a cover wall 27, which extend parallel to the cover wall 25. The plug contact 15 extends in a plane that extends parallel to the cover wall 25. A recess 31 in the housing body is associated with the cover wall 25 and is bounded by the cover wall 25. The recess 31 is open in the positive direction of the plug axis, as well as in the direction of the plug contact 15 and against the direction of the plug contact 15.

[0026] A contact recess 33 is assigned to the plug connector contact 15. The contact recess 33 is bounded externally by the plug connector contact 15. The plug connector recess 33 is open in the positive plug connector axis direction, as well as in the direction of the cover wall 25 and in the direction of the cover wall 27.

[0027] The plug-in part 1 further comprises the central web, which is arranged in the plug-in part contact chamber 21. The central web has a base section 41 that extends substantially parallel to and spaced apart from the cover wall 25 and the cover wall 27. Additionally, the central web has a touch-protection step 43, which is connected to the base section 41. The base section 41 is connected to the housing base 7 and to the housing body 5.

[0028] A central web recess 45 is associated with the central web and is bounded externally by the central web. The central web recess 45 is open in the positive direction of the plug-in component's axis, as well as in the direction of the cover wall 25 and in the direction of the cover wall 27. The central web recess 45 is formed by a material-free, housing-bottom-side base section and a material-free connecting section pointing in the positive direction of the plug-in component's axis. The base section transitions directly into the connecting section. The base section essentially has the shape of a circular cylinder. The connecting section essentially has the shape of a stepped cuboid.

[0029] The base section 41 rests against the cover surface of the plug-in contact 15 facing the cover wall 25. The touch protection projection 43 extends from the base section 41 towards the cover wall 27 and completely covers an end face pointing in the positive plug-in axis direction, as well as the side surfaces of the plug-in contact 15 facing towards the housing body 5. The cover surface of the plug-in contact 15 is open in a free area towards the cover wall 25. Unlike the rest of the cover surface of the plug-in contact 15, this free area is not covered by the base section 41, so that the cover surface is exposed in the area of ​​the base section. The free area essentially has the shape of a circular annular cutout.

[0030] The plug-in part 1 also has a guide web. The guide web has the form of a hat profile with a profile base 53, profile side walls 55, and profile flanges 57. The profile base 53 and the profile side walls 55 together define a profile groove 59, which is open towards the plug-in part contact 15 and is preferably cuboid in shape. The profile groove 59 extends substantially parallel to the plug-in part insertion axis SS. The guide web is connected to the housing body 5 and the housing base 7 via the profile flanges 57. The profile base 53 extends substantially in a profile base plane that is parallel to the cover wall 25. The profile flanges 57 extend in a common profile flange plane that is parallel to and spaced apart from the profile base plane. The profile flange plane is spaced apart from both the central web and the plug-in part contact 15.

[0031] The housing base 5, the central web, and the guide web together form an end face of the connector 1, pointing in the positive direction of the connector axis. The connector contact 15 is recessed relative to the plane in which the end face of the connector 1 extends, in the direction of the housing base 7. The connector contact 15 is partially covered by the base section 41 and the touch protection projection 43. A connector contact surface 61 (see in particular Fig. 2) The contact surface of the plug-in part 15 is not covered by the central rib and is exposed in the direction of the guide rib. The contact surface 61 of the plug-in part extends parallel to and opposite the top surface of the plug-in part contact 15.

[0032] In the Fig. 3 and Fig. 4 is a recording part 101 for the one in the Fig. Figure 6 shows a plug-in system 1000. The receiving part 101 has a receiving part housing with a housing base 105, a housing bottom 107, and an access sleeve 109. Additionally, the receiving part 101 has a central web, a guide web, and a receiving part contact 115, preferably formed by a flat contact. The receiving part contact is shown, by way of example, as a cuboid strip. The receiving part contact 115 is not directly connected to the housing base 105.

[0033] The housing base 105 and the housing bottom 107 define an external boundary for a receiving part contact space 121. The receiving part contact space 121 is closed by the housing bottom 107 in the negative direction of a receiving part's plug axis AS, with the exception of a passage for the receiving part contact 115. In the positive direction of the receiving part's plug axis, the receiving part contact space 121 is open. In the Fig. 3 and Fig. In the embodiment of the receiving part 101 shown in Figures 4, 5, and 6, the housing base 105 is formed by a rectangular tube. The receiving part contact 115, the central web, and the guide web are arranged in the receiving part contact chamber 121.

[0034] The housing body 105 has a cover wall 125 and a cover wall 127. Cover wall 127 extends parallel to and spaced apart from cover wall 125. Cover wall 125 has an access opening. The access opening is bounded externally by cover wall 125. The access opening has the shape of a, preferably squat, circular cylinder.

[0035] The access sleeve 109 is arranged radially outward on the housing body 105 with respect to the receiving part's stator axis AS. The access sleeve 109 is essentially in the form of a hollow cylinder and, with respect to a longitudinal axis of the sleeve passage, defines a sleeve passage radially outward. The longitudinal axis of the sleeve passage extends perpendicularly to the receiving part's stator axis AS. The sleeve passage adjoins the access passage radially outward. The sleeve passage is arranged concentrically with the access passage and is aligned with it.

[0036] The receiving part 101 has a central web. The central web extends essentially in a plane parallel to the cover wall 125. The central web is connected to the housing base 107, but not directly to the housing body 105. The central web has a base section 141 and a touch-protection shoulder 143. A nut opening is associated with the base section 141, which is bounded radially outwards by the base section 141 with respect to a longitudinal axis of the nut opening. The longitudinal axis of the nut opening extends coaxially to the longitudinal axis of the sleeve opening.

[0037] The touch protection step 143 projects from the base section 141 towards the cover wall 125 and covers an end face of the receiving part contact 115 pointing in the positive receiving part plug axis direction. In addition, the touch protection step 143 also covers the side faces of the receiving part contact 115, which extend from the end face of the receiving part contact 115 and at right angles to the cover wall 125.

[0038] The base section 141 rests against a top surface of the receiving part contact that faces the top wall 127. A receiving part contact surface 145 of the receiving part contact 115 extends parallel to and opposite the top surface of the receiving part contact. The receiving part contact surface 145 is not covered by the central web and is exposed in the direction of the guide web.

[0039] The receiving part 101 further comprises the guide web. The guide web extends essentially in a plane parallel to the third cover surface 125. The guide web is located between the first cover surface 125 and the central web. The guide web is connected to the housing base 7, but not directly to the housing body 105. A guide web opening is associated with the guide web, and this opening is bounded radially outward by the guide web with respect to its longitudinal axis. The longitudinal axis of the guide web opening extends coaxially with the longitudinal axis of the sleeve passage and coaxially with the longitudinal axis of the screw nut opening.

[0040] The receiving part 101 further comprises a screw assembly. The screw assembly includes a screw with a screw shank 203, a shank collar 205, and a screw head 207, as well as a screw nut 209. The shank collar 205 is connected to the screw shank 203 and has a bearing surface facing the receiving part contact 115. The screw head 207 is guided on the inner circumferential surface of the access passage, with respect to the receiving part stub axis AS, in a radially tilt-free manner.

[0041] The nut 209 is located in the nut opening, which is bounded by the central web. The nut 209 is connected to the receiving part by a material-locking and / or form-locking connection. In addition, the nut 209 can be completely overmolded on its side facing away from the screw head 207, for example with the material of the central web.

[0042] Furthermore, the screw with its screw shaft 203 is in thread engagement with the screw nut 209. On its side facing away from the screw shaft 203, a protective cap 211 is attached to the screw head 207, so that the screw head 207 cannot be touched from the outside.

[0043] The shaft collar 205 can be made of a single material and / or be integrally connected to the screw shaft 203. Alternatively, the shaft collar 205 can also be pushed onto the screw shaft 203 up to a stop on the screw shaft 203 and / or engage in threaded engagement with the screw shaft 203.

[0044] Furthermore, the receiving part 101 has a sealing cap 221. The sleeve opening, which is bounded externally by the access sleeve 109, can be closed by means of the sealing cap 221, radially outward with respect to the receiving part's stub axis AS. The sleeve opening has a base-side opening section and an outer opening section. The base-side opening section adjoins the access opening directly. The diameter of the access opening is the same as the base-side opening section. Thus, the access opening and the base-side opening section have the same diameter. The outer opening section adjoins the base-side opening section radially outward with respect to the receiving part's stub axis.The diameter of the outer penetration section is larger than the base body penetration section, so that an annular shoulder surface results at the transition point from the base body penetration section to the outer penetration section.

[0045] The sealing cap 221 comprises a cap base 223, an inner sleeve 225, an outer sleeve 227, and a sealing element 229, preferably annular. The inner sleeve 225, the outer sleeve 227, and the cap base 223 together define an annular groove in the sealing cap. The annular groove is open on the side facing away from the cap base 223. The sealing element 229, whose material can be, for example, an elastomer, is attached to the outer circumferential surface of the inner sleeve 225.

[0046] Starting from the cap base 223, the inner sleeve 225 extends perpendicularly away from the cap base 223 by one inner sleeve length. The value of the inner sleeve length corresponds to the length of the outer penetration section. With the plug-in part inserted into the receiving part contact space and the screw assembly tightened, the protective cap 211 does not project radially beyond the penetration section on the base body with respect to the receiving part plug axis AS, and thus does not protrude into the outer penetration section. In this state, the sealing cap 221 can be fully fitted onto the access sleeve 109 so that an end face of the access sleeve 109 facing the sealing cap 221 rests against the cap base 223.The sealing element 229 is then clamped between the outer circumferential surface of the inner sleeve 225 and an inner circumferential surface of the outer sleeve 227, so that neither dust nor moisture can penetrate between the access sleeve 109 and the sealing cap 221 into the plug-part receiving space and / or the receiving part contact space. When fully fitted onto the access sleeve 109, the inner circumferential surface of the outer sleeve 227 is locked onto the outer circumferential surface of the access sleeve 109. If the sealing cap 221 can be fully slid onto the access sleeve 109 and locked onto the outer circumferential surface of the access sleeve 109, it is ensured that the screw assembly is in its tightened state, as otherwise the protective cap 211 would still protrude into the outer penetration section. It would then not be possible to fully attach the sealing cap 221 to the access sleeve 109 and to lock the sealing cap 221 into place with the outer circumferential surface of the access sleeve 109.A worker who manufactures the plug-in system can thus recognize during the assembly of the sealing cap 221 whether the screw arrangement is correctly in its tightened state.

[0047] The plug-in part 1 can be connected to an electrical component, such as a charging socket or a high-voltage double rail system, via the plug-in part housing and plug-in part contact 15. The same applies to the receiver part: the receiver part 101 can be connected to an electrical component, such as a charging socket or a high-voltage double rail system, via the receiver part housing and receiver part contact 115.

[0048] The following describes a method for manufacturing the plug-in system 1000. The method comprises a setup step, a plug-in step, a screw step, and a sealing cap step.

[0049] In the provisioning step, the plug-in part 1 and the receiver part 101, including the screw assembly, are provided. The screw is only slightly screwed into the nut 209 with its screw shank 203, such that a sufficiently large gap exists between the bearing surface of the shank collar 205 and the receiver part contact surface 145 of the receiver part contact 115, so that the plug-in part contact 15 can be inserted into this gap when the plug-in system 1000 is manufactured. The screw assembly is in its loose state.

[0050] The insertion step is performed immediately following the provisioning step. During the insertion step, the insertion axis SS of the plug-in part and the insertion axis AS of the receiving part align with each other. In the insertion step, the plug-in part 1 is inserted into the receiving part contact space 121 in the positive direction of its insertion axis and / or the negative direction of its receiving part insertion axis until the housing base 5 abuts the housing bottom 107 of the receiving part, forming a plug-in assembly. During insertion, the base section 141 is guided in the profile groove 59, and the housing base 5 is guided on the inner circumferential surface of the housing base 105. The interference-free insertion of the plug-in part 1 into the receiving part contact space 121, with the screw assembly already pre-assembled, is made possible in particular by the cutouts defined by the plug-in part 1 and described above. The plug-in assembly is in the Fig.Figure 5 shows the following. In the plug-in arrangement, the sealing element 17 is clamped between the outer circumferential surface of the housing base 5 and the inner circumferential surface of the housing base 105. In the area of ​​the sealing element 17, the inner circumferential surface of the housing base 105 is offset radially outwards compared to the rest of the inner circumferential surface of the housing base 105, with respect to the receiving part plug axis AS.

[0051] The screwing step is performed immediately following the insertion step. In this step, the screw assembly is rotated using a tool via the access opening under the influence of a predefined torque, thus building up the pressing force and creating the plug-in system 1000, bringing it into its tightened state. In the tightened state, both the plug-in contact 15 and the receiver contact 115 between the shaft collar 205 and the screw nut 209 are clamped under the influence of the pressing force. Specifically, the plug-in contact surface 61 is pressed against the receiver contact surface 145 under the influence of the pressing force, so that a high electrical power can be transmitted via the plug-in contact surface 61 and the receiver contact surface 145 with low contact resistance of the plug-in system 1000.

[0052] The sealing cap step is performed immediately following the insertion step. In this step, the sealing cap 221 is fully inserted onto the access sleeve 109, thus providing complete protection against contact with the connector system 1000. Furthermore, the sealing element 229 is clamped between the sealing cap 221 and the access sleeve 109, preventing dust and moisture from entering the connector contact chamber 21 and / or the receiver contact chamber 121. The sealing cap 221 can be coupled to a high-voltage interlock system, so that removing the sealing cap 221 from the access sleeve 109 de-energizes the vehicle's high-voltage system. REFERENCE MARK LIST 1 plug-in part 5 Housing base 7 Case bottom 9 Housing outer sleeve 15 Plug-in contact 17 Sealing element 21 Plug-in contact space 23 Ring groove 25 Ceiling wall 27 Ceiling wall 31 Base body cutout 33 Contact disconnection 41 Basic section 43 Touch protection paragraph 45 Center web cutout 53 profile floor 55 Profile side wall 57 Profile flange 59 Profile groove 61 Plug-in contact surface 101 Recording section 105 Housing base body 107 Case base 109 Access sleeve 115 Recording part contact 121 Recording section contact room 125 Ceiling wall 127 Ceiling wall 141 Basic section 143 Touch protection section 145 Receiving part contact surface 203 screw shaft 205 shaft collar 207 screw head 209 Screw nut 211 Protective cap 221 Sealing cap 223 Cap bottom 225 inner sleeve 227 Outer sleeve 229 Sealing element 1000 plug-in system SS plug-in part thru-axle AS mounting part thru-axle

Claims

[1] Plug-in system with: a plug part (1), a recording section (101), wherein a plug-in housing of the plug-in part (1) is inserted into a receiving part contact space (121) which is bounded externally by a receiving part housing of the receiving part (101), such that a plug-in contact surface (61) of a plug-in contact (15) of the plug-in part (1) is in contact with a receiving part contact surface (145) of a receiving part contact (115) of the receiving part (101), and wherein the plug-in contact surface (61) and the receiving contact surface (145) are pressed against each other by means of a pressing force applied by a screw arrangement of the plug-in system (1000), preferably in its tightened state, characterized by , that a housing base body (105) of the receiving part housing has an access passage for rotary actuation of the screw, and that the screw arrangement has a protective cap (211) as a contact protection element, which is connected to the screw head (207) on the side of the screw head (207) facing away from the screw shank (203); that the receiving part (101) has an access sleeve (109) which is arranged on the outside of the housing body (105) of the receiving part (101) and defines an outer sleeve passage which is aligned with the access passage; that the plug-in system (1000) has a sealing cap (221). [2] Plug-in system according to claim 1, characterized by , that the pressing force acts, preferably substantially, at right angles to the plug-in part contact surface (61) and / or the receiving part contact surface (145), and / or that the screw arrangement extends, preferably substantially, at right angles to the plug-in part contact surface (61) and / or the receiving part contact surface (145). [3] Plug-in system according to claim 1 or 2, characterized by , that the screw arrangement comprises a screw and a screw nut (209), and that the screw comprises a screw head (207), a screw shank (203) and a shank collar (205) attached to the screw shank (203) and preferably spaced apart from the screw head (207), and that the plug-in contact (15) and the receiving contact (115) are pressed together under the influence of the pressing force between the shaft collar (205) and the screw nut (209). [4] Plug-in system according to claim 3, characterized by , that the shaft collar (205) has a bearing surface facing the plug part contact (15), wherein it is provided that the shaft collar (205) with its bearing surface is pressed against the plug part contact (15), preferably directly and / or electrically conductive. [5] Plug-in system according to claim 3 or 4, characterized by , that the shaft collar (205) is made of the same material and / or is integrally connected to the screw shaft (203), and / or that the shaft collar (205) is pushed and / or screwed onto the screw shaft (203), and preferably rests against a shoulder of the screw shaft (203) or a stop point of the screw shaft (203), wherein it is preferably provided that the shaft collar (205), preferably an internal thread of the shaft collar (205), is in thread engagement with the screw shaft (203), preferably an external thread of the screw shaft (203). [6] Plug-in system according to one of the preceding claims, characterized by , that the plug-in contact (15) is associated with a contact recess (33) which is at least partially limited to the outside by the plug-in contact (15) and / or is open in the positive plug-in axis direction of the plug-in plug axis (SS), and / or that a housing base body (5) of the plug-in part housing is assigned a base body cutout (31) which is limited to the outside by the housing base body (5) of the plug-in part housing and / or is open in the positive plug-in axis direction of the plug-in part plug-in axis (SS). [7] Plug-in system according to one of the preceding claims, characterized by , that a housing base body (5) of the plug-in part housing, a housing base (7) of the plug-in part housing and a housing outer sleeve (9) of the plug-in part housing define an annular groove (23) circumferentially around the housing base body (5), wherein it is preferably provided that the annular groove (23) is open in the positive plug-in axis direction of the plug-in part plug-in axis (SS). [8] Plug-in system according to claim 7, characterized by , that a sealing element (17), preferably annular, is arranged in the annular groove (23), wherein it is provided that the sealing element (17) in the plug-in system (1000) seals a gap between the housing base body (5) of the plug-in part housing, preferably an outer circumferential surface of the housing base body (5) of the plug-in part housing, and a housing base body (105) of the receiving part housing, preferably an inner circumferential surface of the housing base body (105) of the receiving part housing. [9] Plug-in system according to claim 1, characterized by , that the housing body (105) is designed in such a way that the screw head (207) is not directly accessible via the access opening and / or that the material of the protective cap (211) is an electrically non-conductive and / or electrically insulating material. [10] Plug-in system according to claim 1, characterized by , that the sealing cap (221) is designed and / or suitable so that the sealing cap (221), preferably when the plug part (1) is fully inserted into the receiving part contact space (121), can only be fully slid onto the access sleeve (109) and / or brought into positive connection with the outer circumferential surface of the access sleeve (109) if the screw arrangement is in its tightened state.

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