Seal for an electric plug device, housing assembly, electric plug device, and casting mold

Abstract

To provide technical means for sealing a plug device which can be installed smoothly and without applying excessive force.SOLUTION: The invention relates to a seal (1) for an electrical plug device having a through opening for passing through an electrical conductor of the electrical plug device, where the through opening (10) extends along a hole axis (18) and, in the through opening (10), a sealing protrusion portion is arranged which extends in a closed manner and at least sectionally obliquely to a normal plane (30) of the hole axis (18) around the hole axis (18). Due to at least sectional obliqueness of the sealing protrusion portion (28), a lead in chamfer portion (32) which facilitates passing through of the electrical conductor to the through opening portion (10) is formed. Furthermore, the invention comprises a housing assembly and an electrical plug device having such a seal (1). In addition, the invention comprises a casting tool for producing such a seal (1).SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a seal for an electrical plug device. Further, the present invention relates to a housing assembly having such a seal and a casting mold for manufacturing such a seal. In addition, the present invention relates to an electrical plug device having such a housing assembly.

Background Art

[0002] Plug devices are used in a number of technical fields to form a detachable connection for transmitting current and / or signals. For reasons of improved electrical safety and handling, plug devices typically have a housing, from the interior of which conductors emerge for the transmission of current and / or signals. In this situation, it is often necessary to prevent moisture and / or dust from entering the interior of the housing by means of a seal.

[0003] Conventional seals need to form a sealing press fit with the conductor and thus initially exert a certain resistance to the passage of the conductor, so that installation involves relatively great effort. Thus, especially in the case of thin and delicate conductors, such conductors are difficult to pass through because they are prone to bending during the process.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Accordingly, the underlying problem of the present invention is to provide a technical means for sealing a plug device that can be installed smoothly without applying excessive force.

Means for Solving the Problems

[0005] This problem is solved by a seal for an electrical plug device, the seal having a through-opening for passing a conductor of the electrical plug device, the through-opening extending along a hole axis, and in the through-opening, a sealing projection is arranged which is closed around the hole axis and extends at least partially inclined with respect to the normal plane of the hole axis.

[0006] The conductor may be a contact element and a cable or wire of the electrical plug device. The normal plane is a plane perpendicular to the hole axis. In other words, the normal plane is a plane of the normal or a perpendicular plane.

[0007] The invention is advantageous in that at least partial inclination of the sealing projection forms a chamfering portion that facilitates the passage of the conductor. In this case, the chamfering portion formed by the sealing projection not only faces radially inward as in the case of a conventional seal, but also extends inclined in the circumferential direction. This makes the movement easier when passing the conductor through the through-opening, and correspondingly, the force to be exerted on the conductor becomes smaller.

[0008] The invention can be further improved by the following configurations, each of which is advantageous and can be combined with each other as required.

[0009] According to a first possible configuration that can be easily manufactured, the seal may be a sealing element made of rubber, silicone, such as vinyl methyl silicone (VMS), or another sealing material. The sealing projection is preferably adapted as a sealing lip or a sealing rib projecting radially inward with respect to the hole axis. In particular, the sealing lip or the sealing rib may be convex inward in any radial section with respect to the hole axis and have a vertex closest to the central axis of the through-opening. Alternatively, the sealing projection may be a sealing diaphragm that at least partially or completely seals the through-opening.

[0010] The path of the sealing projection described initially may be defined, for example, by a closed central plane that divides the sealing projection into two equal parts. Thus, this central plane may be adapted to extend around the hole axis so as to close in the circumferential direction and may extend at least partially inclined with respect to the normal plane of the hole axis. All other explanations of the path of the sealing projection also refer to this central plane.

[0011] In the case of a sealing projection adapted as a sealing lip or a sealing rib, the path may be defined by the connecting line of all vertices. This means that this connecting line may be adapted to extend around the hole axis so as to close in the circumferential direction and may extend at least partially inclined with respect to the normal plane of the hole axis. All other explanations of the path of the sealing projection also refer to this connecting line.

[0012] An alternative definition of the path of the sealing projection may be made by the transition of the sealing projection to the inner wall of the through-opening. More precisely, the surface and / or the base of the sealing projection may transition to the inner surface of the through-opening. This transition between the sealing projection and the inner wall may be adapted to extend around the hole axis so as to close in the circumferential direction and may extend at least partially inclined with respect to the normal plane of the hole axis. Thus, all other explanations of the path of the sealing projection also refer to this transition.

[0013] According to another possible configuration, the sealing projection may extend continuously. In particular, the sealing projection may extend continuously around the hole axis. That is, the sealing projection may extend continuously, curvilinearly, smoothly, without shock, and / or without gaps. Furthermore, the path of the sealing projection in the direction of the hole axis may have at least partially a continuous, monotonic, progressive, or retrogressive gradient. This means that there are no folds or gaps that could cause leakage.

[0014] One part of the sealing protrusion may be offset from another part of the sealing protrusion in the direction of the hole axis. In particular, the sealing protrusion may have a first part and a second part spaced apart therefrom, and the two parts are offset from each other in the direction of the hole axis. In other words, the two offset parts are at different heights with respect to the hole axis. Thus, when passing the conductor through the through-opening, the two offset parts can be guided to pass through individually and one by one. Thereby, the maximum required effort is reduced or at least distributed over the length of the through-opening, so that it is not applied all at once.

[0015] As long as the conductor is stably held in another way and the free cross-section remains unchanged over the entire length of the through-opening when viewed in the direction of the hole axis, the sealing force will not necessarily decrease as a result of the two offset parts.

[0016] To connect the two offset parts to each other, the sealing protrusion may have two further parts that are on opposite sides of each other with respect to the hole axis, in particular with respect to the central axis of the through-opening. In other words, the sealing protrusion may have a third part and a fourth part spaced apart therefrom that are on opposite sides of each other. This means that the two opposite parts are at the same height with respect to the hole axis or the central axis. The two opposite parts are preferably adapted to be mirror symmetrical. At this time, the two offset parts and the two opposite parts, namely the first part, the second part, the third part and the fourth part, form the sealing protrusion.

[0017] Alternatively, the sealing protrusion may not have parts that are symmetrically opposite to each other with respect to the central axis of the through-opening. At this time, the two offset parts are connected to each other via an asymmetric part of the sealing protrusion.

[0018] According to another possible configuration, the sealing projection may extend along an extension plane, particularly a linear extension plane, that is inclined with respect to the hole axis. Thereby, compared to a sealing projection that does not extend along a linear plane, the circumferential length becomes shorter. In this situation, the extension plane may be inclined by one or two mutually perpendicular inclination axes. Furthermore, each inclination may be up to 45°.

[0019] Generally, the inner shape of the through-opening may conform to the outer shape of the conductor. Thus, for example, when it is necessary to pass a conductor having a square or polygonal cross-section, the through-opening may be adapted as a square or polygonal through-hole.

[0020] To enable the sealing of round contact elements, cables or wires, the through-opening may be adapted as a round circular hole. Furthermore, the sealing projection may at least partially form a circular, annular, or toroidal segment. In particular, the aforementioned first, second, third, and fourth portions of the sealing projection may each form a circular, annular, or toroidal segment.

[0021] For example, the inner diameter of the through-opening may preferably be at most 1 mm, particularly at most 0.8 mm, in both cases greater than 0.2 mm. Thus, with the seal, it is possible to seal particularly fine conductors such as those used in many signal transmission fields. The inner diameter may be larger if necessary. This may apply, for example, when the conductor is larger.

[0022] To seal a flat ribbon cable or a flat contact element, the through-opening may be adapted as an oval or polygonal oblong hole whose longitudinal direction extends perpendicular to the hole axis. Furthermore, the sealing projection may at least partially form a linear segment that extends parallel to the longitudinal direction of the oblong hole. In particular, the linear segment may extend parallel to or inclined with respect to the normal plane of the hole axis.

[0023] For example, the above-mentioned first and second portions of the sealing protrusion may each form a linear segment parallel to the normal plane of the hole axis. Similarly, the third and fourth portions of the sealing protrusion described above may each form a linear segment extending obliquely with respect to the normal plane of the hole axis. The first and second portions preferably extend along the long side of the oval hole, and the third and fourth portions preferably extend along the short side of the oval hole, or vice versa.

[0024] According to another possible configuration, one or more additional sealing protrusions may be arranged in the through-opening to enhance the sealing ability. Each of the additional sealing protrusions or the plurality of additional sealing protrusions may be adapted as described above. In particular, all the sealing protrusions in the through-opening may be parallel to each other. Alternatively, each sealing protrusion may have a different inclination angle with respect to the hole axis.

[0025] So that a seal can also be used in a plug device having several conductors, the seal optionally has one additional through-opening or several additional through-openings. Each of the additional through-openings or the plurality of additional through-openings may be adapted as described above. In any case, it is preferred that all through-openings have the same number of sealing protrusions. The sealing protrusions of each through-opening may extend parallel to each other, or may have different inclination angles with respect to the hole axis.

[0026] The first-mentioned problem is also solved by a housing assembly for an electrical plug device, which housing assembly comprises a seal according to one of the above-described configurations and a housing part, and the seal is adapted to be received in the housing part.

[0027] Due to the functions and advantages of the seal described above, during the manufacture of the plug device, the conductor can also be attached to the housing assembly according to the present invention without requiring much labor. In addition, the seal can be housed in the housing part, and thus the seal is more dimensionally stable, making it even easier to install the conductor by the housing part.

[0028] According to one possible configuration of the housing assembly, the seal and the housing part may be two separate components assembled as part of the manufacture of the plug device. This configuration is characterized by excellent maintainability, for example, when it is necessary to replace the seal due to aging or wear.

[0029] To enable stable contact of the seal in the housing part, the seal may preferably have at least one flat surface extending perpendicular to the hole axis. In particular, the seal may be adapted as a mat seal.

[0030] Optionally, the seal has at least one radially outward-facing outer sealing lip. The outer sealing lip contributes to the airtightness of the housing assembly and fixes the seal to the housing part, which is particularly advantageous when the seal is housed in the housing part.

[0031] Alternatively, the seal and the housing part may constitute a two-component part. In other words, the housing part may be injection molded as a plastic part and then overmolded with the seal. Thus, the number of separate components of the housing assembly is reduced.

[0032] The electrical plug device also solves the initially described problem when the electrical plug device has a housing assembly according to one of the above-described configurations and at least one conductor, and the at least one conductor extends through the through-opening of the seal, and the sealing protrusion of the seal abuts against the at least one conductor so as to seal.

[0033] The plug device according to the present invention also enjoys the advantages of the seal. In particular, the effort when passing the conductor through the through-opening can be made smaller, and the plug device can be assembled.

[0034] Finally, the initially stated problem is also solved by a casting tool for manufacturing a seal according to one of the above-described configurations, the casting tool having at least one core for forming the through-opening of the seal.

[0035] With the casting tool according to the present invention, a seal having the above-described functions and advantages can be manufactured.

[0036] According to one possible configuration of the casting tool, the at least one core may be adapted to move along the core-pulling direction with respect to the other parts of the casting tool. In this case, the core-pulling direction preferably extends parallel to the hole axis. Further, the at least one core may have a groove for forming a sealing projection, the groove extending around and inclined with respect to the core-pulling direction. Due to the inclination of the groove, a pull-off chamfer in the at least one core is obtained, whereby the casting tool according to the present invention can be more easily core-pulled.

[0037] Optionally, one portion of the groove may be offset from another portion of the groove in the core removal direction. In particular, the groove may have a first portion and a second portion spaced therefrom, and the two portions are offset from each other in the core removal direction. In other words, the two offset portions are at different heights relative to the core removal direction. Thus, the distance between the two portions is greater than the free cross-section of the through-opening described above. Therefore, at least one core can have a greater material thickness between the two portions than when the two portions are at the same height relative to the core removal direction. As a result, according to this configuration, the casting tool can be used for a greater number of casting cycles before at least one core wears or breaks.

[0038] Hereinafter, based on several embodiments, with reference to the drawings, the present invention will be described in more detail. Various features of those embodiments may be combined as needed according to the above description. In the drawings, similar, identical, and functionally identical elements are identified with the same reference numerals as long as it is convenient.

[0039] The drawings show the following.

Brief Description of the Drawings

[0040]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

DETAILED DESCRIPTION OF THE INVENTION

[0041] With reference to FIGS. 1 to 5, the schematic structure of the seal 1 according to the present invention will be described below. The schematic structure of the housing assembly 2 according to the present invention will be described with reference to FIG. 6. Next, the schematic structure of the electrical plug device 4 according to the present invention will be described with reference to FIGS. 7 and 8. Finally, the schematic structure of the casting mold 6 according to the present invention will be described with reference to FIG. 9.

[0042] FIG. 1 shows an exemplary embodiment of a seal 1 for an electrical plug device 2. Here, the seal 1 is a sealing element 8 made of rubber, silicone, such as vinyl methyl silicone (VMS), or another sealing material. The seal 1 has a through-opening 10 for passing the conductor 12 of the electrical plug device 2. The conductor 12 can be either a contact element 14 (see FIG. 7) or a cable 16 (see FIG. 8) of the electrical plug device 4.

[0043] The through-opening 10 extends along the hole axis 18 through the sealing element 8. In the embodiment shown in FIG. 1, the through-opening 10 is adapted as an oval oblong hole 20. The longitudinal direction 22 of the oblong hole 20 extends perpendicular to the hole axis 18. Alternatively, the through-opening 10 may be adapted as a round circular hole 24 (see FIGS. 4 and 5). For example, the inner diameter 26 of the circular hole 24 may be at most 1 mm, particularly at most 0.8 mm, in either case more than 0.2 mm. This can be advantageous in the case of a fine conductor 12. If a larger conductor 12 is used, the circular hole 24 may be correspondingly larger.

[0044] Generally, the inner shape of the through-opening 10 may conform to the outer shape of the conductor 12, thereby providing a sealing press fit. For example, if it is necessary to pass a conductor having a square or polygonal cross-section, the through-opening 10 may be adapted as a square or polygonal through-hole.

[0045] A sealing projection 28 is disposed in the through-opening 10, which is adapted to close and extend circumferentially and extends around the hole axis 18 at least partially inclined with respect to the normal plane 30 of the hole axis 18. Here, the normal plane 30 is a plane perpendicular to the hole axis 18 (i.e., the plane of the normal or the perpendicular plane).

[0046] The at least partially inclined path of the sealing projection 28 forms a chamfered lead-in portion 32 that facilitates the passage of the conductor 12 into the through-opening 10. For this purpose, the sealing projection 28 preferably extends continuously. That is, the sealing projection 28 may extend continuously, curvilinearly, smoothly, without impact, or without gaps. Further, the path of the sealing projection 28 in the direction of the hole axis 18 may have at least partially a continuous, monotonic, progressive, or retrogressive gradient. In particular, the sealing projection 28 may extend along an extending plane 34 that is inclined with respect to the hole axis 18, particularly a straight extending plane 34. The inclination angle 36 may be up to 45°.

[0047] As can be seen from the cross-sectional views of FIGS. 2 and 3, the sealing projection 28 may be adapted as a sealing lip 38 that projects radially inwardly with respect to the hole axis 18. In any radial cross-section 40 with respect to the hole axis 18, the sealing lip 38 may be convex inwardly and have a vertex 42 that is closest to the central axis 44 of the through-opening 10. According to an alternative embodiment (not shown), the sealing projection may be a sealing diaphragm that at least partially or completely seals the through-opening.

[0048] The path of the sealing projection 28 may be defined, for example, by the connecting lines 46 of all the vertices 42. This means that the connecting line 46 is adapted to extend circumferentially in a closed state around the hole axis 18 and may extend at least partially inclined with respect to the normal plane 30 of the hole axis 18. All other explanations of the path of the sealing projection 28 similarly refer to this connecting line 46.

[0049] Alternatively, the path of the sealing projection 28 may be defined by the transition portion 48 of the sealing projection 28 to the inner wall 50 of the through opening 10. More precisely, the surface 52 and / or the base 54 of the sealing projection 28 may transition to the inner surface 56 of the through opening 10 (see FIG. 3). This transition portion 48 between the sealing projection 28 and the inner wall 50 may be adapted to extend circumferentially in a closed state around the hole axis 18 and may extend at least partially inclined with respect to the normal plane 30 of the hole axis 18.

[0050] A further alternative definition of the path of the sealing projection 28 may be provided by a closed central plane (not shown) that divides the sealing projection 28 into two equal parts. For example, this central plane may be adapted to extend circumferentially in a closed state around the hole axis and may extend at least partially inclined with respect to the normal plane of the hole axis.

[0051] The sealing projection 28 may be formed from a first part 5a, a second part 5b, a third part 5c, and a fourth part 5d. The first part 5a of the sealing projection 28 is offset from the second part 5b of the sealing projection 28 in the direction of the hole axis 18. Further, in this case, the first part 5a is spaced apart from the second part 5b. In other words, the two offset parts 5a, 5b are at different heights with respect to the hole axis 18 (see FIG. 3). Thus, when passing the conductor 12 through the through opening 10, the two offset parts 5a, 5b can be guided to pass through individually and one by one. Thereby, the required labor is reduced or at least better distributed over the length of the through opening 10.

[0052] As long as the conductor 12 is stably held in another way (see Fig. 7) and the free cross-section 60 remains unchanged along the entire length of the through-opening 10 when viewed in the direction of the hole axis 18, the sealing force will not necessarily decrease as a result of the two offset portions.

[0053] The two offset portions 5a, 5b are connected to each other via a third portion 5c and a fourth portion 5d spaced apart therefrom of the sealing projection 28. In this case, the third portion 5c and the fourth portion 5d are on opposite sides of each other with respect to the hole axis 18, and particularly with respect to the central axis 44 of the through-opening 10 (see Fig. 1). This means that the two opposite portions 5c, 5d are at the same height with respect to the hole axis 18 and the central axis 44, respectively. In addition, the two opposite portions 5c, 5d may be adapted to be mirror symmetric.

[0054] As shown in Figs. 4 and 5, when the first portion 5a, the second portion 5b, the third portion 5c, and the fourth portion 5d of the sealing projection 28 are each disposed in the through-opening 10 adapted as a circular hole 24, they may form a toroidal segment 62.

[0055] In the through-opening 10 adapted as an oval hole 20, the first portion 5a and the second portion 5b of the sealing projection 28 may each form a linear segment 64 extending parallel to the normal plane 30 of the hole axis 18. Also, the third portion 5c and the fourth portion 5d of the sealing projection 28 may each form a linear segment 64 extending obliquely with respect to the normal plane 30 of the hole axis 18. The first portion 5a and the second portion 5b preferably extend along the long side 66 of the oval hole 20, and the third portion 5c and the fourth portion 5d preferably extend along the short side 68 of the oval hole 20, or vice versa.

[0056] As can be seen, for example, from FIG. 6, a plurality of additional sealing protrusions 28 may be disposed in the through-opening 10 in order to enhance the sealing ability. Each of the additional sealing protrusions 28 may be adapted as described above. In particular, all of the sealing protrusions 28 in the through-opening 10 may extend parallel to each other. Alternatively, each sealing protrusion may have a different inclination angle 36 with respect to the hole axis 18 (see FIG. 8).

[0057] Depending on the number of conductors 12 used in the electrical plug device 4, the seal 1 may have a corresponding number of through-openings 10. In other words, the seal 1 may have several additional through-openings 10 (see FIG. 3). Each of the additional through-openings 10 may be adapted as described above. In this case, it is preferable that each of the through-openings 10 has the same number of sealing protrusions 28. The sealing protrusions 28 of each through-opening 10 may extend parallel to each other (see FIG. 4), or may have different inclination angles 36 with respect to the hole axis 18 (see FIG. 5).

[0058] FIG. 6 shows an exemplary embodiment of a housing assembly 2 for an electrical plug device 2. The housing assembly 2 has a seal 1 and a housing part 70 according to one of the above-described configurations, and the seal 1 is received in the housing part 70. Further, the housing assembly 2 has a further seal 1 that is similarly received in the housing part 70. In this case, the housing part 70 is manufactured as a plastic injection molded part 72 and then overmolded with the seal 1. Thus, the seal 1 and the housing part 70 constitute an integrally molded part 74.

[0059] FIG. 7 shows an alternative embodiment of the housing assembly 2 in which the seal 1 and the housing part 70 are separate components that can be assembled. In this case, in order to enable stable contact of the seal 1 in the housing part 70, the seal 1 may preferably have at least one flat surface 76 that extends perpendicular to the hole axis 18. In particular, the seal 1 may be adapted as a mat seal 78 that is arranged to abut against the bottom 80 of the housing part 70.

[0060] Optionally, the seal 1 has at least one, preferably a plurality of, radially outwardly facing outer sealing lips 82. The outer sealing lips 82 contribute to the airtightness of the housing assembly 2 and secure the seal 1 to the housing part 70 when the seal 1 is received in the housing part 70 (see FIG. 7).

[0061] Instead of or in addition to the outer sealing lips 82, the seal 1 may be held by a housing cap 84 of the housing assembly 2, which housing cap 84 is attachable to the housing part 70 (see FIG. 8).

[0062] FIG. 7 further shows an exemplary embodiment of an electrical plug device 4 having a housing assembly 2 and a plurality of conductors 12. As can be seen from the figure, the conductors 12 extend through the through openings 10 of the seal 1. Each sealing projection 28 of the through opening 10 makes sealing contact with a corresponding conductor 12. Further, each conductor 12 is adapted as a contact element 14 held by the housing part 70.

[0063] FIG. 8 shows another exemplary embodiment of the electrical plug device 4. Here, the sealing projections 28 of the seal 1 do not contact the contact elements 14, but contact an electrical cable 16 of the plug device 4 to which the contact elements 14 are attached at the ends (e.g., by crimping, soldering, welding, etc.). To achieve this state, it is necessary to pass the contact elements 14 through the respective through openings 10. This installation step is facilitated by the aforementioned chamfered lead-in portions 32 at the sealing projections 28.

[0064] FIG. 9 shows an exemplary embodiment of a casting tool 6 for manufacturing the seal 1 in a partial cross-sectional view. The casting tool 6 has at least one core 86 for forming the through-opening 10 of the seal 1. Further, the casting tool 6 comprises two separable casting mold halves 88a, 88b that together with at least one core 86 form a cavity 90 in which the seal 1 can be cast. The at least one core 86 is adapted to move relative to the two mold halves 88a, 88b along a core-pulling direction 92, which preferably extends parallel to the hole axis 18.

[0065] Furthermore, the at least one core 86 may include a groove 94 for forming the sealing protrusion 28. The groove 94 extends in a closed state around the core-pulling direction 92 and extends at least partially inclined with respect to the core-pulling direction 92. Due to the inclination of the groove 94, a draft portion 96 on the at least one core 86 is obtained, whereby the casting tool 6 according to the invention can be more easily core-pulled.

[0066] Optionally, a first portion 98a of the groove 94 may be offset from a second portion 98b of the groove 94 in the core-pulling direction 92. In other words, the two offset portions 98a, 98b are at different heights with respect to the core-pulling direction 92. Thus, the distance 100 between the two offset portions 98a, 98b is larger than the free cross-section 60 of the through-opening 10 described above. Thus, the at least one core 86 has a larger material thickness 102 between the two offset portions 98a, 98b than when all portions of the groove are at the same height with respect to the core-pulling direction 92. As a result, according to this embodiment, the casting tool 6 can be used over a greater number of casting cycles before the at least one core 86 wears or breaks.

[0067] Of course, if the seal 1 to be manufactured is to have several through openings, the casting tool 6 may have several cores 86. The number of grooves 94 of the core 86 / the plurality of cores 86 depends on the number of sealing protrusions 28 provided in each through opening 10.

Explanation of symbols

[0068] 1 Seal 2 Housing assembly 4 Plug device 5a, 5b, 5c, 5d Parts 6 Casting tool 8 Sealing element 10 Through opening 12 Conductor 14 Contact element 16 Cable 18 Hole axis 20 Oval hole 22 Longitudinal direction 24 Circular hole 26 Inner diameter 28 Sealing protrusion 30 Normal plane 32 Chamfered lead-in part 34 Extending plane 36 Tilt angle 38 Sealing lip 40 Radial cross-section 42 Vertex 44 Central axis 46 Connection line 48 Transition part 50 Inner wall 52 Surface 54 Base 56 Inner surface 60 Cross-section 62 Toroidal segment 64 Segment 66 Side 68 Side 70 Housing part 72 Plastic injection molded part 74 Integrally molded part 76 Flat surface 78 Mat seal 80 Bottom 82 Outer Sealing Lip 84 Housing Cap 86 Core 88a, 88b Cast Molding Die Half 90 Cavity 92 Core Extraction Direction 94 Groove 96 Pulling Chamfered Portion 98a, 98b Portion 100 Distance 102 Material Thickness

Claims

1. A seal (1) for the electrical plug device (4), having a through-opening (10) for passing a conductor (12) of the electrical plug device (4), wherein the through-opening (10) extends along a hole axis (18), and a sealing protrusion (28) is disposed in the through-opening (10) in a closed state around the hole axis (18) and extending at least partially inclined with respect to a normal plane (30) of the hole axis (18), wherein the through-opening (10) is adapted as an oval oblong hole (20) whose longitudinal direction (22) extends perpendicular to the hole axis (18), wherein the sealing protrusion (28) at least partially forms a linear segment (64) extending parallel to the longitudinal direction (22) of the oblong hole (20), and the linear segment (64) extends parallel to the normal plane (30) of the hole axis (18), the seal (1).

2. The sealing protrusion (28) extends continuously around the hole axis, The seal (1) according to claim 1.

3. A part (5a) of the sealing protrusion (28) is offset in the direction of the hole axis (18) from another part (5b) of the sealing protrusion (28), The seal (1) according to claim 1.

4. The sealing protrusion (28) extends along an extending plane (34) inclined with respect to the hole axis (18), The seal (1) according to claim 1.

5. The through-opening (10) is adapted as an oval oblong hole (20), The seal (1) according to claim 1.

6. The sealing protrusion (28) has two parts (5c, 5d) on opposite sides with respect to the hole axis (18), The seal (1) according to claim 1.

7. A further sealing protrusion (28) is disposed in the through-opening (10), and the plurality of the sealing protrusions (28) extend parallel to each other, The seal (1) according to claim 1.

8. The seal (1) has a further through-opening (10) having a further sealing protrusion (28), and the plurality of the sealing protrusions (28) of each of the through-openings (10) extend parallel to each other, The seal (1) according to claim 1.

9. The seal (1) is adapted as a mat seal (78), The seal (1) according to claim 1.

10. Comprising the seal (1) according to any one of claims 1 to 9 and a housing part (70), The seal (1) is adapted to be received in the housing part (70). A housing assembly (2) for an electrical plug device (4). **Claim 11** The seal (1) and the housing part (70) are two separate components or form an integrally molded part (74). The housing assembly (2) according to claim 10. **Claim 12** An electrical plug device (4) having the housing assembly (2) according to claim 10 and at least one conductor (12), wherein the at least one conductor (12) extends through the through-opening (10) of the seal (1), and the sealing projection (28) abuts against the at least one conductor (12) so as to seal. An electrical plug device (4). **Claim 13** A casting mold (6) for manufacturing the seal (1) according to any one of claims 1 to 9, wherein the casting mold (6) comprises at least one core (86) for forming the through-opening (10) of the seal (1). A casting mold (6).

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