DE102022005084B4 - Device and method for passing through a cable - Google Patents

Abstract

Device (100) for passing a cable (1), cable feedthrough, through a wall and/or along a holder (2) for holding the cable (1), comprising,
- a first fastening element (3), a flange element, for fastening the cable (1) to the wall and/or the support (2) and to a first of two sides of the wall and/or support (2),
- a second fastening element (4), a body kit, which is in force-locking contact with the flange element on the first side and extends through the wall and/or the bracket (2) to the second side of the wall and/or bracket (2) and is guideable, so that the second fastening element (3) protrudes away from the wall (2) with a fastening area on the second side, and
- a counter-pressure element (5), a lock nut (5) which can be brought into force-locking contact with the fastening area, so that the wall and/or the bracket (2) can be clamped along its thickness direction between the lock nut (5) and the first and/or second fastening element (3, 4), wherein
- the cable (1) can be guided through the first fastening element (3), the second fastening element (4) and the lock nut (5),
characterized in that
a surface of the first fastening element (3) facing the wall and/or the holder (2) is formed at least in places with at least one plastic in order to create a dust- and/or watertight connection between the first fastening element (3) and the wall surface on the first side of the wall (2), wherein the soft component (32) is applied to the hard component (31) in a non-detachable manner by means of an arrangement method, by hot-gluing or in the form of a sealing ring, wherein the first fastening element (3) has a base body (6) through which the cable (1) can be guided, wherein on a surface facing the wall (2) side of the base body a (6) sealing element (7) is formed and fixed and the sealing element (7) is formed with the sealing plastic, wherein
the sealing element (7) is formed with a hard component and a soft component (32), wherein starting from the base body (6), first the hard component (31) is arranged and on this hard component (31) the soft component (32) is arranged, so that only the soft component (32) can be brought into contact with the wall surface for sealing, wherein the two components differ in a Shore-D hardness or the base body (6) is formed with the hard component (31) itself, on which the soft component (32) is arranged, wherein the Shore-D hardness of the two components differs by at least 10%, by at least 20%, wherein
the base body (6) is formed with a metal, a ceramic and/or a plastic.

Description

The present invention relates to a device for passing through a cable and to a method for producing a device for passing through a cable, in particular a cable bushing, through a wall and/or along a holder for holding the cable according to the respective preambles of patent claims 1 and 8.

The DE 10 2016 120 041 A1 shows a fastening device, in particular a cable gland, for a cable, with a base body that can be mounted in or on an opening in a wall, a fastening body that is linearly displaceable along a longitudinal direction of the base body and relative thereto for moving the fastening device from an initial position into a clamping position and which comprises an elastically deformable cover section that is designed to cover the base body (6) and to make sealing contact with the wall at least in the clamping position, and an elastically deformable clamping body that is arranged between the base body and the fastening body, wherein the fastening body is designed to elastically deform the clamping body when the fastening device is moved from the initial position into the clamping position so that the clamping body contacts the cable circumferentially in order to create a fluid-tight seal between the clamping body and the cable and to provide strain relief for the cable.

DE 32 42 073 C2 shows that for a shielded electrical cable through a wall in a metallic enclosure, a bushing is specified. This bushing consists of a tube that extends the cable shield and an injection-molded protective body that surrounds the cable end with the tube. The shield is attached to the tube by means of a crimp sleeve, and the tube has an external thread at its free end for attaching a nut. A sealing element is located between the protective body and the wall.

The DE 198 44 468 A1 shows that a second groove section is constructed in a shaft section that is directly connected to the head. The axial length of the shaft section does not exceed the wall thickness.

DE 10 2011 018 882 A1 shows that a feedthrough has a base body which, in an assembled state, is guided through a through-opening into a wall of a housing up to a stop, with the wall facing a union nut. A cable seal is attached to one side of a connection piece. The nut is provided with recesses to connect the body and the nut to the wall. The body is provided with a flat or round elastomer housing seal to seal the body against the wall. The body is provided with ribs to prevent rotation of the body in an opening in the housing. The housing seal is designed as a hollow body.

EP 0 660 482 A1 describes that in a pressure-tight cable entry, where a cable runs through a hole in a wall component, a deformable, ring-shaped sealing body encloses the cable sheath. The sealing body is pressed radially from the outside against the sheath and against seating surfaces by means of a tensioning element. A rigid sleeve is inserted between the cable sheath and its cable core in the area of the sealing body. This rigid sleeve prevents the cable core from bending due to the compressive forces exerted by the sealing body. The sealing effect is thus maintained over a long period of time and is also independent of the sheath material and the internal structure of the cable core.

In contrast to the prior art, the present invention is a customized cable entry system which is not only more cost-effective but also more space-saving due to a customized design in a machine and/or device, and which also includes a strain relief which minimizes any stress on the flange area.

The aim of the present invention is therefore to enable simple and safe installation of the cable entry on the EMC box while simultaneously ensuring shield contact and sealing, among other things, against the ingress of dust.

The object of the described invention is to provide a device and a method for passing a cable through a wall or along a support, thereby ensuring a dust- and/or watertight seal. This object is achieved by claims 1 and 4.

Among other things, the following features can be implemented, such as space-saving laying of the main cable through 60° deflection, primary strain relief before the cable enters the EMC box, secondary strain relief by crimping the outer cable sheath and the shielding braid, sealing of the EMC BOX breakthrough (IP 69 is aimed for in aged products), assembly without counter-holding, radial contacting of the outer shielding braid via a contact/body kit to the EMC box and the transmission of 10 A continuous current via the contact.

According to the invention, the device for passing a cable, in particular cable feedthrough, through a wall and/or along a holder for holding the cable comprises a first fastening element, in particular a flange element, for fastening the cable to the wall and/or the holder and to a first of two sides of the wall and/or holder. In addition, the device comprises a second fastening element, in particular a body kit, which is in force-fitting contact with the flange element on the first side and extends through the wall and/or the holder to the second side of the wall and/or holder and can be guided, so that the second fastening element projects away from the wall on the second side with a fastening region, and a counter-pressure element, in particular a counter nut, which can be brought into force-fitting contact with the fastening region, so that the wall and/or the holder can be clamped along its thickness direction between the counter nut and the first and/or second fastening element, wherein the cable can be guided through both the first fastening element, the second fastening element and the counter nut, which is characterized in that a surface of the first fastening element facing the wall and/or the holder is formed at least in places with at least one plastic in order to create a dust-tight and/or waterproof connection between the first fastening element and the wall surface on the first side of the wall.

According to the invention, the first fastening element has a base body through which the cable can be passed, wherein a sealing element is formed and fastened on a side of the base body facing the wall and the sealing element is formed with the sealing plastic.

According to the invention, the sealing element is formed with a hard component and a soft component, wherein starting from the base body, first the hard component is arranged and on this hard component the soft component is arranged, so that with the wall surface, preferably only the soft component can be brought into contact for sealing, in particular wherein the two components differ in a Shore D hardness or the base body is formed with the hard component itself, on which the soft component is arranged.

According to the invention, the Shore-D hardness of the two components differs by at least 10%, preferably by at least 20%.

According to the invention, the base body is formed from a metal, a ceramic and/or a plastic.

According to the invention, the soft component is applied to the hard component, preferably in a non-detachable manner, by means of an arrangement method, for example by hot-gluing or in the form of a sealing ring.

According to at least one embodiment, the device comprises at least one shielding element which is attached in a shield-like manner to at least one of the fastening elements and/or the cable and seals at least the first fastening element in the radial direction along the wall surface at the edge, and wherein the cable can be passed through the shielding element, thus providing a protective sheath, and wherein a shielding edge of the shielding element can be applied in a dust-tight and/or water-tight manner to a surface of the wall on its first side by means of the counterpressure of the counterpressure element.

According to at least one embodiment, the device comprises a pre-injection element which is overmolded onto an outer surface of the first fastening element and wherein the shielding element also encloses the pre-injection element in the radial direction.

Furthermore, the present invention also relates to a method for producing a device for passing a cable, in particular a cable bushing, through a wall and/or along a holder for holding the cable. All features disclosed for the device described here are thus also disclosed for the method described here, and vice versa.

• GF: Glasfasern
• GB: Glaskugeln
• MF: Mineralfasern
• MX: nicht spezifizierte Mineralfüllung
• GX: nicht spezifizierte Glasfüllung
• CD: Kohlenstoffmehl
• P: nicht spezifiziertes Füllmehl

In principle, the following non-exhaustive list of materials can be considered as materials for at least one of the components described here: Material group modification SHORE D ABS 75 - 93 ABS + 30 wt.% GF 62 - 68 ABS / TPE 46 ABS / TPU 58 - 68 ASA 75 ETFE 60 - 78 EVA 17 - 45 PA11 PA 11 + 23 wt.% GF 70 PA12 PA 12 (standard moisture) 75 - 78 PA 12 + 30 M.-% GF (standard humidity) 75 PA 612 73 PA6 PA 6 (standard moisture) 52 - 77 PA 6 + 30 wt.% GF 48 - 80 PA 6 + 30 wt.% GF (dry) 84 PA66 PA 66 + 30 wt.% GF 77 - 82 PA 66 + 30 wt.% GB 81 PA 66 + 30 wt.% MX 75 - 82 PAEK 86 - 90 PAEK + 30 wt.% GF 90 PBI 99 PBT 79 - 86 PBT + 30 wt.% GF 53 - 85 PBT + 30 wt.% GX 54 PC 51 - 85 PC + 30 wt.% GF 65 - 72 PC + 30 wt.% GX 70 PCTFE 76 - 80 PE-HD 56 - 69 PE-LD 39 - 83 LLDPE 38 - 60 PE-MD 45 - 60 PE-UHMW 60 - 65 PEEK 83 - 88 PEI 88 - 90 PEK 87 PEK + 30 wt.% GF 90 PET PET + 30 wt.% GF 63 - 65 PMMA 52 - 85 PMMA + 30 wt.% GF 55 POM 52 - 83 PP 59 - 77 PP + 30 wt.% GF 62 - 80 PP + 30 wt.% CD 74 - 75 PP + 30 wt.% MF 60 - 74 PP + 30 wt.% P 65 PP + 30 wt.% CaCO ₃ 55 - 70 PP / EPDM 40 PS 78 - 80 PTFE 50 - 90 PURE 20 - 84 PVC-U 74 - 94 PVC-U / NBR 58 - 74 PVC-P 42 - 77 PVC-C 82 PVDF 46 - 79 SAN 45 - 85 SMMA 72 - 82 TPC 28 - 82 TPE 48 - 78 TPE / PTFE 56 TPE-E TPE-E + 30 wt.% GF 55 TPO 16 - 70 TPS 60 TPU TPU + 30 wt.% GF 74 - 80 TPV 40 - 51 where:

• GF: Glass fibers
• GB: Crystal balls
• MF: Mineral fibers
• MX: unspecified mineral filling
• GX: unspecified glass filling
• CD: Carbon flour
• P: unspecified filling flour

At least one of the components presented here can also be manufactured using the following 3D printing processes, which are not listed exhaustively.

1. The FDM process (Fused Deposition Modeling)

Alternative names: Fused Filament Fabrication (FFF), Fused Layer Modeling (FLM). This process involves the layer-by-layer application (extrusion) of a material through a hot nozzle. The consumable material, in the form of a long wire (called a filament), is spooled and pushed through the conveyor unit into a print head, where it is melted and deposited onto a print bed. The print head and/or print bed are movable in three directions. This allows plastic layers to be applied one upon the other step by step.

2. The SLS process (Selective Laser Sintering)

In contrast to the sintering process, in which powdered materials are bonded together under the influence of heat, the SLS process selectively bonds using a laser (alternatively, an electron beam or infrared beam). Thus, only a specific portion of the powder is fused together.

For this purpose, a thin layer of powder is always applied to the print bed by the coating unit. The laser (or other energy source) is then precisely aimed at individual spots in the powder layer to create the first layer of the print data. The powder is melted or completely melted and then solidifies again through slight cooling. The unmelted powder remains around the sintered areas and serves as support material. After a layer has solidified, the print bed lowers by a fraction of a millimeter. The coating unit then moves over the print bed and applies the next layer of powder. The second layer of the print data is then sintered by the laser (or other energy source). This creates a three-dimensional object layer by layer.

3. Three-Dimensional Printing (3DP)

The 3DP process works very similarly to selective laser sintering, but instead of a directed energy source, a print head moves over the powder. This releases tiny droplets of binder onto the underlying powder layers, bonding them together. Otherwise, this process is identical to the SLS process.

4. Stereolithography (SLA)

Instead of plastic wire or powdered printing material, the stereolithography process uses liquid resins, known as photopolymers. These resins are hardened layer by layer by UV radiation, creating three-dimensional objects. For this, the build platform is gradually lowered into the resin tank. There are also variants (so-called polyjet processes) without a full tank of liquid resin. For this process, an epoxy resin is applied drop by drop from a nozzle and immediately cured by a UV laser.

5. Laminated Object Manufacturing (LOM)

Alternative name: Layer Laminated Manufacturing (LLM)

The process is based neither on chemical reactions nor on a thermal process. A cutting tool (e.g., a knife or carbon dioxide laser) is used to cut a film or sheet (e.g., paper) along its contour and then bond the layers together. Lowering the build platform creates a layered object made up of glued, overlapping films.

According to at least one embodiment, the method for producing a device for passing a cable, in particular a cable feedthrough, through a wall and/or along a holder for holding the cable comprises, inter alia, the steps of providing the following elements, such as a first fastening element, in particular a flange element for fastening the cable to the wall and/or the holder and to a first of two sides of the wall and/or holder, and a second fastening element, in particular a body kit, which is in force-locking contact with the flange element on the first side and extends through the wall and/or the holder to the second side of the wall and/or holder and can be guided, so that the second fastening element projects away from the wall with a fastening area on the second side, and a counterpressure element, in particular a lock nut, which is in force-locking contact with the fastening area can be brought into contact so that the wall and/or the holder can be clamped along its thickness direction between the counter nut and the first and/or second fastening element, and the cable can be guided through the first fastening element, the second fastening element and also through the counter nut, and further wherein a surface of the first fastening element facing the wall and/or the holder is formed at least in places with at least one plastic in order to create a dust-tight and/or watertight connection between the first fastening element and the wall surface on the first side of the wall, and in a further step the sealing element is formed with a hard component and a soft component, wherein starting from the base body first the hard component and on this hard component the soft component is applied by means of an arrangement method, for example by hot gluing, or in the form of a sealing ring on the hard component, preferably in a non-detachable manner.

In the following, the invention is described in more detail using an embodiment and the associated figures.

The 1A shows a sectional view of the present device 100 for passing a cable 1, in particular a cable feedthrough, through a wall and/or along a holder for holding the cable 1, which comprises a first fastening element 3, in particular a flange element, for fastening the cable 1 to the wall and/or the holder 2 and to a first of two sides of the wall and/or holder, as well as a second fastening element 4, in particular a body kit, which is in force-fitting contact with the flange element on the first side and extends through the wall and/or the holder to the second side of the wall and/or holder and can be guided, so that the second fastening element 4 protrudes away from the wall 2 with a fastening area on the second side, and a counterpressure element 5, in particular a counternut 5, which can be brought into force-fitting contact with the fastening area, so that the wall and/or the holder 2 is sandwiched along its thickness direction between the counternut 5 and the first and/or second fastening element 3, 4 can be clamped, wherein the cable 1 can be guided through the first fastening element 3, the second fastening element 4 as well as through the counter nut 5, wherein a surface of the first fastening element 3 facing the wall and/or the holder 2 is formed at least in places with at least one plastic in order to create a dust and/or watertight connection between the first fastening element 3 and the wall surface on the first side of the wall 2.

The 1B shows a front view of the above described 1A the present device 100 for passing a cable 1, in particular cable feedthrough, through a wall and/or along a holder for holding the cable 1.

In the 1C shows a side view of the above described 1A the present device 100 for passing a cable 1, in particular cable feedthrough, through a wall and/or along a holder for holding the cable 1.

The first fastening element 3 has a base body 6 through which the cable 1 can be passed, wherein a sealing element 7 is formed and fastened on a side of the base body 6 facing the wall and the sealing element 7 is formed with the sealing plastic.

In the 2A The cables 1 described here are shown, which are in force-fitting contact with the flange element on the first side and extend through the wall and/or the holder to the second side of the wall and/or holder and can be guided. The first fastening element 3 has a base body 6 through which the cable 1 can be guided. A sealing element 7 is formed and fastened on a side of the base body 6 facing the wall, and the sealing element 7 is formed with the sealing plastic.

The soft component 32 is applied to the hard component, preferably in a non-detachable manner, by means of an arrangement method, for example by hot-gluing or in the form of a sealing ring.

Also shown is at least one shielding element 8 which is secured in a shield-like manner to at least one of the fastening elements 3, 4 and/or the cable 1 and seals at least the first fastening element 3 at the edge in the radial direction along the wall surface, and wherein the cable 1 can be passed through the shielding element 8, thus providing a protective sheath, and wherein a shielding edge of the shielding element 8 can be applied in a dust-tight and/or watertight manner to a surface of the wall 2 on its first side by means of the counterpressure of the counterpressure element 5.

The 2B shows the underside of the second side of the wall and/or bracket, on which the cables 1 extend and can be guided, wherein the second fastening element 4 on the second side protrudes away from the wall 2 with a fastening area.

In the 2C An arrangement of the cables 1 described here is shown, wherein the base body 6 is formed from a metal, a ceramic and/or a plastic. 2D and 2E the flange element can be seen, which serves to fasten the cable 1 to the wall and/or the holder 2 and to a first of two sides of the wall and/or holder.

The device 100 also comprises a pre-injection element 9, which is overmolded onto an outer surface of the first fastening element 3, and wherein the shielding element 8 also encloses the pre-injection element 9 in the radial direction.

The 3A represents the sealing element 7, which is formed with a hard component and a soft component 32, wherein starting from the base body 6, first the hard component and on this hard component the soft component 32 is arranged, so that with the wall surface, preferably only the soft component 32 can be brought into contact for sealing, in particular wherein the two components differ in a Shore-D hardness or the base body 6 is formed with the hard component itself, on which the soft component 32 is arranged.

In the 3B represents the top view of the hard and soft components 32 described above, wherein the Shore-D hardness of the two components differs by at least 10%, preferably by at least 20%.

The 3C shows a front view of the above described 3B .

The 4A and 4B show side views of the counter-pressure element 5, in particular a counter nut 5, which can be brought into force-fitting contact with the fastening area, so that the wall and/or the holder 2 can be clamped along its thickness direction between the counter nut 5 and the first and/or second fastening element 3, 4, wherein the cable 1 can be guided through the first fastening element 3, the second fastening element 4 as well as through the counter nut 5, further wherein a surface of the first fastening element 3 facing the wall and/or the holder 2 is formed at least in places with at least one plastic in order to create a dust- and/or watertight connection between the first fastening element 3 and the wall surface on the first side of the wall 2.

The 4C represents a top view of the counter-pressure element 5 described above, in particular a counter nut 5, which can be brought into force-fitting contact with the fastening area, so that the wall and/or the holder 2 can be clamped along its thickness direction between the counter nut 5 and the first and/or second fastening element 3, 4.

The 4D shows a front view of the counter pressure element 5, in particular a counter nut 5, wherein the 4E but shows the underside.

In the 4F a sectional view of the counterpressure element, in particular a counter nut 5, can be seen.

List of reference symbols

1

Cable

2

Wall and/or bracket

3

first fastening element

4

second fastening element

5

Counter pressure element, lock nut

6

Basic body

7

Sealing element

8

Shielding element

9

Pre-injection element

31

Hard component

32

Soft component

41

collar element

100

device

1000

Proceedings

Claims (4)

Device (100) for passing a cable (1), cable feedthrough, through a wall and/or along a holder (2) for holding the cable (1), comprising - a first fastening element (3), a flange element, for fastening the cable (1) to the wall and/or the holder (2) and to a first of two sides of the wall and/or holder (2), - a second fastening element (4), a body kit, which is in force-fitting contact with the flange element on the first side and extends through the wall and/or the holder (2) to the second side of the wall and/or holder (2) and is guideable, so that the second fastening element (3) protrudes away from the wall (2) with a fastening area on the second side, and - a counterpressure element (5), a counternut (5), which can be brought into force-fitting contact with the fastening area, so that the wall and/or the holder (2) is sandwiched along its thickness direction between the counternut (5) and the first and/or second fastening element (3, 4), wherein - the cable (1) can be guided through both the first fastening element (3), the second fastening element (4) and the counter nut (5), characterized in that a surface of the first fastening element (3) facing the wall and/or the holder (2) is formed at least in places with at least one plastic in order to create a dust- and/or watertight connection between the first fastening element (3) and the wall surface on the first side of the wall (2), wherein the soft component (32) is permanently applied to the hard component (31) by means of an arrangement method, by hot-gluing or in the form of a sealing ring, wherein the first fastening element (3) has a base body (6) through which the cable (1) can be guided, wherein a sealing element (7) is formed and fastened on a side of the base body facing the wall (2), and the sealing element (7) is formed with the sealing plastic, wherein the sealing element (7) is formed with a hard component and a soft component (32), wherein starting from the base body (6) first the hard component (31) is arranged and on this hard component (31) the soft component (32) is arranged, so that only the soft component (32) can be brought into contact with the wall surface for sealing, wherein the two components differ in a Shore D hardness or the base body (6) is formed with the hard component (31) itself, on which the soft component (32) is arranged, wherein the Shore D hardness of the two components differs by at least 10%, by at least 20%, wherein the base body (6) is formed with a metal, a ceramic and/or a plastic. Device (100) according to Claim 1 , characterized by at least one shielding element (8) which is fastened in a shield-like manner to at least one of the fastening elements (3, 4) and/or the cable (1) and seals at least the first fastening element (3) at the edge in the radial direction along the wall surface, and wherein the cable (1) can be passed through the shielding element (8) and thus a protective sheath is provided, and in that a shielding edge of the shielding element (8) can be applied in a dust-tight and/or watertight manner to a surface of the wall (2) on the first side thereof by means of the counterpressure of the counterpressure element (5). Device (100) according to at least one of the preceding claims, characterized by a pre-injection element (9) which is injection-molded onto an outer surface of the first fastening element (3), and wherein the shielding element (8) also encloses the pre-injection element (9) in the radial direction. Method (1000) for producing a device (100) for passing a cable (1), cable feedthrough, through a wall and/or along a holder (2) for holding the cable (1), comprising, among other things, the steps: - Providing the following elements: ◯ a first fastening element (3), a flange element for fastening the cable (1) to the wall and/or the bracket (2) and to a first of two sides of the wall and/or bracket (2), ◯ a second fastening element (4), a body kit, which is in force-fitting contact with the flange element on the first side and extends through the wall and/or the bracket (2) to the second side of the wall and/or bracket (2) and is guideable, so that the second fastening element (4) protrudes away from the wall (2) on the second side with a fastening area, and ◯ a counterpressure element (5), a counternut (5), which can be brought into force-fitting contact with the fastening area, so that the wall and/or the bracket (2) can be clamped along its thickness direction between the counternut (5) and the first and/or second fastening element (3, 4), ◯ the cable (1) both through the first Fastening element (3), the second fastening element (4) as well as through the counter nut (5), and further wherein a surface of the first fastening element (3) facing the wall and/or the holder (2) is formed at least in places with at least one plastic in order to create a dust- and/or watertight connection between the first fastening element (3) and the wall surface on the first side of the wall (2), and in a further step, the sealing element (7) is formed with a hard component (31) and a soft component (32), wherein, starting from the base body (6), first the hard component (31) and on this hard component (31), the soft component (32) is permanently applied by means of an arrangement method, by hot-gluing, or in the form of a sealing ring on the hard component (31), wherein the first fastening element (3) has a base body (6) through which the cable (1) can be passed, wherein on a side of the base body facing the wall (2) a (6) A sealing element (7) is formed and fastened and the sealing element (7) is formed with the sealing plastic, wherein the sealing element (7) is formed with a hard component and a soft component (32), wherein, starting from the base body (6), first the hard component (31) is arranged and the soft component (32) is arranged on this hard component (31), so that only the soft component (32) can be brought into contact with the wall surface for sealing, wherein the two components differ in a Shore D hardness or the base body (6) is formed with the hard component (31) itself, on which the soft component (32) is arranged, wherein the Shore D hardness of the two components differs by at least 10%, by at least 20%, wherein the base body (6) is formed with a metal, a ceramic and/or a plastic.