WO2023208624A1

WO2023208624A1 - Mounting device with strain relief unit

Info

Publication number: WO2023208624A1
Application number: PCT/EP2023/059888
Authority: WO
Inventors: Stephan BLENKLE; Peter Schmidt; Steffen Burk
Original assignee: eltherm production GmbH
Priority date: 2022-04-27
Filing date: 2023-04-17
Publication date: 2023-11-02

Abstract

The invention relates to a mounting device (1) for securing to a subsurface, such as a pipeline (2), in particular designed for connecting to an accessory part (3), such as a junction box or an indicator light, in particular an indicator light for monitoring the status of heating cable operating states, comprising a housing base (4) and a strain relief unit integrated in the housing base (4) to provide strain relief for at least one line (5) introduced into the housing base (4), in particular to provide strain relief for one or more heating cables, wherein a line (5) introduced into the housing base (4) is guided along at least one deflection surface (16, 18) and/or deflection edge (22, 23, 24) of the strain relief unit and deflected or bent on the deflection surface (16, 18) and/or deflection edge (22, 23, 24).

Description

Mounting device with strain relief device

The invention relates to a combined mounting device/cable entry for attachment to a surface, such as a pipeline, in particular designed for connection to an accessory, such as a connection box or an indicator light, in particular an indicator light for monitoring the status of operating states of heating cables, with a housing base and with a Strain relief device integrated into the housing base for strain relief of at least one, preferably flat, cable inserted into the housing base, in particular for strain relief of one or more heating cables.

From DE 696 37 201 T2 a sealing device for elongated heating cables is known. The known device has a housing base which includes a first open end and a second open end. A polygonal shape of the base of the housing foot offers good stability on a surface. At the upper, second open end, the housing base is fastened with a cap. To provide strain relief for a heating cable guided through the housing base, a strain relief element is provided that comprises a base element with two elongated positioning arms. When assembled, locking projections on the positioning arms engage behind a corresponding annular shoulder on the inner wall of the housing base. Opposite the positioning arms, gripping arms are formed, at the free ends of which gripping elements for a heating cable are provided. The cable end then runs in a straight line through an opening in the base element and is gripped by the gripping elements. Furthermore, the gripping arms are pressed against the sides of the cable when assembled to ensure that the gripping elements are in good contact with the cable.

A particular disadvantage of the known mounting device is that the cable holding forces of the strain relief element provided are low.

The object of the present invention is to provide a mounting device of the type mentioned at the outset, in which the strain relief of lines or cables, such as heating cables, is implemented in a structurally simple manner with high cable holding forces. Preferably, the strain relief should be able to withstand a standard tensile force of preferably at least 10 kg per cable harness, in particular at least 16 kg per cable harness. In particular, the assembly device should have a simple structural design that allows the strain relief to take effect without the use of assembly tools and without the use of additional fasteners, such as screw elements.

In addition, the structural design of the mounting device should easily allow adaptation to different line thicknesses and/or to lines with different sheath materials.

The tasks are solved by an embodiment according to the invention according to the teaching of claim 1. Advantageous embodiments are the subject of the subclaims.

For strain relief of a line inserted into the housing base, in particular a heating cable inserted into the housing base and passed through the housing base, the mounting device according to the invention has a strain relief device for automatic strain relief of a, preferably flat, line or several, preferably flat, lines which guides the line along at least one deflection surface and/or deflection edge of the strain relief device in the manner of a wrap or loop and is thereby deflected or bent. Accordingly, the line has a non-rectilinear line path in the area of the deflection surface and/or deflection edge and thus differs from the strain relief device known from DE 696 37 201 T2, in which the line is guided in a straight line between two gripping elements of a strain relief element.

The principle of operation of the strain relief device according to the invention is based on the effect of the rope friction, which arises when the cable is guided past or along at least one deflection surface and/or deflection edge of the strain relief device and is thereby deflected or bent in areas from a course that is particularly axially parallel. The cause of rope friction is tangential static friction forces at the points where the cable touches the deflection surface and/or deflection edge of the strain relief device. The rigidity of the cable leads to increased frictional resistance in the area of the wrap. In a state of strain relief, without movement of the cable (static equilibrium), static friction occurs between the cable and the components of the cable Strain relief device. Due to the friction, strain relief of cables is possible with high cable holding forces.

Particularly preferably, the strain relief device has at least one first deflection surface and/or deflection edge and at least one second deflection surface and/or deflection edge, with a line inserted into the housing base on the first deflection surface and/or deflection edge in a first deflection direction and on the second deflection surface and/or or deflection edge is deflected or bent in another, second deflection direction.

To achieve strain relief at high cable holding forces, the cable can be deflected or bent in opposite directions at the first deflection surface and/or deflection edge and at the second deflection surface and/or deflection edge.

In a preferred embodiment, the line can be deflected radially outwards at a deflection surface, in a direction away from the central axis of the housing base, and at another deflection surface, in particular following in the direction of the line, radially inwards, in the direction of the central axis of the housing base.

In particular, the strain relief is effective for at least one line, in particular several lines, which are arranged at least in sections, in particular in the area of the strain relief device, eccentrically to the central longitudinal axis of the mounting device and/or are guided eccentrically through the mounting device.

A structurally preferred embodiment of the mounting device according to the invention provides at least two (separate) interacting strain relief elements, which are part of the strain relief device and/or form it. A first, preferably lower and/or strain relief element facing a pipeline in the assembled state of the mounting device has at least a first deflection surface and/or deflection edge and a second, preferably upper and/or strain relief element facing away from a pipeline in the assembled state has at least a second deflection surface and/or deflection edge on, whereby a cable inserted into the housing base is deflected or bent over on the deflection surfaces and/or deflection edges according to the principle of rope wrapping in order to achieve strain relief in the event of high cable holding forces. The design of the strain relief with strain relief elements that are separate from one another, in particular that can be mounted separately, allows the strain relief device to be easily installed, in particular without the use of assembly tools. Through a suitable structural design of the interacting strain relief elements, effective strain relief can be achieved even without the use of separate connecting means, such as screw elements. There is also the possibility of using the interacting strain relief elements to easily provide strain relief that can be adapted to different line thicknesses and/or sheath materials of the lines.

At least one strain relief element, in particular a strain relief element facing away from the pipeline in the assembled state, can be detachably connected to the housing base in a non-destructive manner, in particular installed in the housing base. Particularly preferably, a structural design can be provided in such a way that at least one strain relief element can be removed from the housing base and replaced with another strain relief element. By using adapted strain relief elements with different dimensions and/or component geometries, strain relief can be achieved for cables with different cable thicknesses and/or different sheath materials if necessary. Particularly preferably, it may be sufficient to simply remove a strain relief element from the housing base or replace it with an adapted strain relief element for an adaptation to cables with a different cable thickness and/or a different jacket material, while a second strain relief element of the strain relief device is equally suitable for cables with different cable thicknesses and/or or different sheath materials and does not have to be replaced to adapt the cable.

At least one strain relief element can have at least one line channel for routing a line inserted into the housing base and/or in the assembled state of the strain relief device, at least one line channel for line routing can be formed between two strain relief elements.

Preferably, a deflection surface and/or deflection edge can be formed on at least one shoulder of the strain relief element that projects radially into the line channel. This makes it easy to redirect or Bend a cable on a strain relief element or on cooperating strain relief elements in order to ensure strain relief through cable friction between the cable and the strain relief element (s) at high cable holding forces.

To provide strain relief for several lines routed in the housing base, the strain relief element can have several line channels and/or in the assembled state of the strain relief device, several line channels can be formed between two strain relief elements. For example, the strain relief device of the assembly device according to the invention can be designed for strain relief of three heating powers.

The design of the strain relief device with a plurality of strain relief elements, in particular arranged in an adjustable manner relative to one another, allows the line to be between a first deflection surface and/or deflection edge of a first strain relief element and a second deflection surface and/or in the assembled state of the assembly device according to the invention or in the functional state of the strain relief Deflecting edge of a second strain relief element is guided or held in a clamping manner. This ensures a sufficiently high level of static friction between the cable and the surfaces of the strain relief elements that are in contact with the cable.

A deflection edge can be designed as a tooth-shaped or jagged shoulder, which acts as a clamping edge that acts against the tensile force when the line is pulled. By appropriately contouring the strain relief elements in the area of the cable deflection and routing, “sharp” edges or barbs can be formed, which act like clamps when the cable is pulled and hold the cable in position without giving way. This further increases the cable holding force.

It is expedient if the contour of the strain relief element in the area of the deflection surface and/or deflection edge is designed in such a way that when the line is pulled, there is only a non-positive connection between the strain relief element and the line. This effectively prevents damage to the sheath material of the cable due to contact with the contour of the strain relief element. However, a design of the contours of the strain relief element in such a way that the contour is in the Jacket material digs in areas and there is also a positive connection between the strain relief element and the line.

Particularly preferably, in the assembled state of the strain relief device, the strain relief elements can lie one behind the other in the axial direction of the housing base or can be arranged one after the other. This simplifies the assembly of the strain relief device.

A first deflection surface and/or deflection edge and a second deflection surface and/or deflection edge can be spaced apart from one another in the axial direction. In particular, at least two strain relief elements can be provided, on which the deflection surfaces and/or deflection edges are formed and which can be arranged at a distance from one another in an assembled state, in particular in the axial direction of the housing base. By suitable coordination of the gap width with contours of the deflection surfaces and/or deflection edges, in particular the coordination of curve radii over which the cable is guided past or along for strain relief, the strain relief device can be equally suitable for strain relief of cables with different cable thicknesses. In particular, the axial distance between the first deflection surface and/or deflection edge and the second deflection surface and/or deflection edge can be adjustable or changed in order to enable strain relief on lines with different line thicknesses. For this purpose, the strain relief elements can be arranged so that they can be adjusted relative to one another in the axial direction, so that the axial distance between deflection surfaces and/or deflection edges on the two strain relief elements can be changed, if necessary, by axially adjusting the strain relief elements. Particularly preferably, the distance between the first deflection surface and/or deflection edge and the second deflection surface and/or deflection edge can be fixed if necessary by locking the strain relief elements. For this purpose, the strain relief device can cooperate with at least one locking means that is designed to releasably fix the strain relief elements in a specific position relative to one another.

The housing base can have at least one guide channel for guiding and passing through at least one line inserted into the housing base, the line entering the guide channel on a conductor insertion side and exiting the guide channel on a conductor outlet side. At least one strain relief element can preferably be inserted via the conductor insertion side or the conductor exit side The guide channel can be inserted and at least partially axially displaceable in the guide channel. This requires appropriate guide geometries and contours on the outer surfaces of the strain relief element and/or inner surfaces of the housing base. For example, the first strain relief element and the second strain relief element can be accommodated in the guide channel of the housing base and guided in the guide channel so as to be displaceable relative to one another.

It is useful if at least one strain relief element can be easily replaced and, for this purpose, is inserted or pushed into the housing base of the mounting device in a non-destructively detachable manner.

By using different strain relief elements that are adapted to lines with different line dimensions, it is possible to provide strain relief for lines with different line dimensions, with at least one strain relief element of the assembly device according to the invention being replaced by a strain relief element with a different geometry and/or other component dimensions. For example, strain relief elements can be used that differ from one another in terms of the curve radii and/or the size of deflection surfaces and/or deflection edges. Tooth-shaped or jagged shoulders can also be provided on the strain relief elements, which have different dimensions, so that if necessary, lines with different line thicknesses can be relieved by using strain relief elements with adapted dimensions of the tooth- or jagged shoulders.

Further preferably, at least one strain relief element, for example a lower strain relief element facing a pipeline in the assembled state, can be arranged stationary in the mounting base and/or non-interchangeably arranged, so that only one strain relief element, for example an upper one, is required in order to adapt the strain relief device to different line dimensions When assembled, the strain relief element facing away from the pipeline must be replaced.

Furthermore, at least one sealing element can be provided, which can preferably be inserted into the guide channel via the conductor insertion side or the conductor exit side and fixed in the guide channel. In assembled condition A strain relief element, for example a lower strain relief element facing a pipeline in the assembled state, can rest against an abutment in the guide channel, in particular against a sealing element, and can be supported in this way.

At least one strain relief element can rest against a line that is guided or held in a particularly clamping manner between the strain relief elements in the assembled state. A first strain relief element can be arranged at a distance from a second strain relief element. Preferably, two strain relief elements rest on both sides against a strain-relieved line.

In addition, the mounting device according to the invention can comprise at least one closure element, wherein the closure element is fixed to or against the housing base in the assembled state, in particular via a latching and/or screw connection, and/or wherein the closure element forms a connecting section, in particular a threaded section - and/or non-positive connection with an accessory.

The closure element can rest against a strain relief element in the assembled state, with the strain relief element being fixed in a specific position in the housing base by force transmission from the closure element. In particular, the closure element prevents the connection between a strain relief element and the housing base of the mounting device from being accidentally released.

In particular, a clamping force can be transmitted from the closure element to cooperating strain relief elements in order to hold a line between the strain relief elements in particular in a clamping manner.

A line inserted into the housing base can preferably be guided through the closure element in the assembled state of the assembly device according to the invention.

In addition, at least one strain relief element can also have a plurality of deflection surfaces and/or deflection edges, which are preferably spaced apart from one another in the axial direction and/or opposite in the radial direction. This simplifies the cable routing through a strain relief element and gives the cable a specific route, in axial direction In the direction of subsequent deflection surfaces and/or deflection edges and preferably on opposite casing sides of the line, deflection surfaces and/or deflection edges that come into contact with the line can cause a certain bend in the line when it passes through a strain relief element. For example, by means of cooperating deflection surfaces and/or deflection edges of a strain relief element, a line can first be deflected or bent radially inwards as it passes through the strain relief element. Through cooperating, separate deflection surfaces and/or deflection edges on a strain relief element, it is possible in particular to ensure that the cable is guided and bent in a way that is gentle on the cable when it passes through a strain relief element, without the risk of a cable breaking. Furthermore, the conductor holding forces are increased.

The strain relief element can consist of a polymeric material with high rigidity, in particular of a polyarylsulfone, such as PSU, PSU+ABS, PES, PPSU, or of a thermoset material. Polyarylsulfones are suitable for use at temperatures between -100 °C and 200 °C and have favorable fire properties. They have high strength, stiffness and elongation at break and are resistant to many chemicals.

An exemplary embodiment of the invention is shown in the drawing and is described in more detail below. Show it

1 shows an assembly device according to the invention in a partially assembled state with partial sectional views of components of the assembly device;

Fig. 2 is a half-sectional view of the mounting device from Fig. 1 in the assembled state;

Fig. 3 is a perspective partial sectional view of an upper strain relief element of the mounting device from Fig. 1;

Fig. 4 is a top view of the strain relief element from Fig. 3;

5 shows a perspective partial sectional view of a lower strain relief element of the mounting device from FIG. 1; Fig. 6 is a top view of the lower strain relief element from Fig. 5;

7 shows a perspective view of a closure element of the mounting device from FIG. 1;

Fig. 8 is a view of the closure element from Fig. 7 from below and

Fig. 9 is an enlarged partial view of detail IX from Fig. 2.

An embodiment of a mounting device 1 for fastening a pipeline 2 (Fig. 1; Fig. 2, shown schematically) for connection to an accessory part 3 (Fig. 2, shown schematically) is described with reference to FIGS. 1 to 9. The accessory 3 can be a connection box or an indicator light or another accessory or connection part.

The mounting device 1 has a housing base 4 and a strain relief device integrated into the housing base 4 for, for example, three lines 5 inserted into the housing base 4. The lines 5 can be heating cables, for example. Typically, the conductor cross section can be 4 x 10 mm to 6 x 14 mm. The conductor jacket can consist of a thermoplastic or a fluoropolymer.

The assembly device 1 can also be designed to guide or pass through a smaller number of lines or a larger number of lines.

The strain relief device is formed by two separate strain relief elements 6, 7, a first, lower strain relief element 6 facing the pipeline 2 in the assembled state and a second, upper strain relief element 7 facing away from the pipeline 2 in the assembled state for strain relief of the lines 5 and accordingly are trained.

Furthermore, the assembly device 1 has a sealing element 8 and a closure element 9. Fig. 1 shows the assembly device 1 in a partially assembled state, when the sealing element 8 is already inserted into the housing base 4.

As can be seen from FIG. 2, by mounting the lower strain relief element 6, a line 5 is first deflected or bent radially outwards. On the lower strain relief element 6, the upper strain relief element 7 is mounted. This directs the line 5 radially inwards towards the central axis Y of the mounting device 1. This creates a loop, whereby the surface friction on the line jacket of the line 5 is significantly increased according to the principle of rope wrapping. The rigidity of the line 5 increases the frictional resistance in the area of the wrap. The stresses caused in line 5 in the area of bending are responsible for this.

By placing the closure element 9 with normal hand force, the strain relief is closed and cannot open independently. For this purpose, the closure element 9 has two latching arms 10, at the ends of which radially projecting projections 11 are formed, which engage under shoulders 12 formed on the outer surface of the housing foot 4, so that in the assembled state of the mounting device 1 there is a latching connection between the closure element 9 and the housing foot 4 is coming.

Furthermore, the closure element 9 has a threaded flange 13 with an external thread section 14, which is intended for screwing to the accessory 3.

In the mounting device 1 shown, a fastening element 15, for example a clamping bracket, is provided for fastening the housing base 4 to or with a pipeline 2.

The embodiment of the mounting device 1 shown and described serves as an exemplary description of the implementation of a strain relief for lines 5 using cooperating strain relief elements 6, 7, along which the lines 5 are guided along or past according to the principle of rope wrapping. However, the mounting device 1 can also be one of those shown in FIGS. 1 to 9 shown embodiment have different structural design. In particular, the housing base 4 of the mounting device 1 can also be designed and provided for fastening on and/or to any surface, in particular a flat surface. The illustrated attachment of the assembly device 1 to the pipeline 2 is only to be understood as an exemplary embodiment. The same applies to the dimensions shown of the components of the assembly device 1 and their geometric design. 9, the first, lower strain relief element 6 has a first deflection surface 16, on which the line 5 in the line section 17 is deflected or bent radially outwards, in a direction away from the central axis Y of the housing base 4 . The second, upper strain relief element 7 has a second deflection surface 18, on which the line 5 in the line section 19 is deflected or bent radially inwards. The line 5 is here in a line channel 20a of the first, lower strain relief element 6 and in a further line channel 20b formed between the second, upper strain relief element 7 and a radially inner axial guide section 21 of the first, lower strain relief element 6 from bottom to top through the housing base 4 guided.

On the inner wall contours of the strain relief elements 6, 7, deflection edges 22, 23, 24 are formed in the area of the line deflection, which act like barbs or clamps when pulled on the line 5 and hold the line 5 in position without giving way. The contours are preferably dimensioned in such a way that damage to a cable jacket of the cable 5 does not occur due to the deflection edges 22, 23, 24 penetrating into the jacket material of the cable jacket.

In the assembled state, the first, lower strain relief element 6 rests against the sealing element 8, which in turn is inserted or fixed in a sealing manner in a guide channel 26 of the housing base 4 via corresponding radial projections 25. The sealing element 8 has through openings with radially inwardly directed tooth- or jagged-shaped clamping sections 27, between which the line 5 is fixed.

The first, lower strain relief element 6 rests against the sealing element 8. The sealing element 8 serves as an abutment for the first, lower strain relief element 6. The second, upper strain relief element 7 rests against the line 5 in the area of the line section 19 and is supported via the line 5, the first, lower strain relief element and the sealing element 8.

By placing the closure element 9 with normal manual force, the strain relief device can be closed, with the second, upper strain relief element 7 being pressed by a pipe section 28 of the closure element 9 towards the first, lower strain relief element 6. This leads to one Contact between the line 5 and the deflection surfaces 16, 18, whereby the strain relief is achieved in the manner described above by cable deflection.

When assembled, the strain relief elements 6, 7 are spaced apart from one another in the axial direction. This is achieved by appropriately dimensioning the upper strain relief element 7 in particular.

By appropriately coordinating the gap width between the strain relief elements 6, 7 and the contours of the deflection surfaces 16, 18 and the deflection edges 22, 23, 24, in particular by coordinating the curve radii over which the line 5 is guided past or along for strain relief, The strain relief device can be used equally for strain relief of lines 5 with different line thicknesses.

The strain relief elements 6, 7 can preferably be inserted axially into the guide channel 26 of the housing base and moved axially. This facilitates any replacement, in particular of the second, upper strain relief element 7, for adaptation to a line 5 with different line dimensions.

On the outside of the axial projection 21 of the first, lower strain relief element 6, a further deflection surface 30 is formed, which serves to align the line 5 axially parallel to the line section 19.

To prevent loss, the strain relief elements 6, 7 can be separably locked. In particular, the first, lower strain relief element 6 can be locked in the housing base 4 against the housing base 4 by turning it using a hexagonal key, similar to a bayonet lock. The second, upper strain relief element 7 can be locked against the first, lower strain relief element 6, in particular via a latching connection, for example by means of latching lugs. List of reference symbols:

1 mounting device 20 18 deflection surface

2 Pipe 19 Pipe section 3 Accessory 20a Pipe duct

4 Housing foot 20b cable duct

5 line 21 leadership section

6 Strain relief element 25 22 Deflecting edge

7 Strain relief element 23 Deflecting edge 8 Sealing element 24 Deflecting edge

9 Closure element 25 Radial projection

10 locking arm 26 guide channel

11 projection 30 27 clamping section

12 shoulder 28 pipe section 13 threaded flange 29 gap

14 external thread section 30 deflection surface

15 fastener

16 deflection surface

17 line section

Claims

Patent claims:

1. Mounting device (1) for attachment to a surface, such as a pipeline (2), in particular designed for connection to an accessory (3), such as a connection box or an indicator light, in particular an indicator light for monitoring the status of operating states of heating cables, with a Housing base (4) and with a strain relief device integrated into the housing base (4) for strain relief at least one line (5) inserted into the housing base (4), in particular for strain relief of one or more heating cables, one inserted into the housing base (4). Line (5) is guided along at least one deflection surface (16, 18) and/or deflection edge (22, 23, 24) of the strain relief device and is deflected or . is bent.

2. Mounting device according to claim 1, characterized in that the strain relief device has at least a first deflection surface (16) and / or deflection edge (23) and at least a second deflection surface (18) and / or deflection edge (24), one in the housing base ( 4) inserted line (5) on the first deflection surface (16) and / or deflection edge (23) in a first deflection direction and on the second deflection surface (18) and / or deflection edge (24) deflected or bent in another, second deflection direction is, in particular wherein the line (5) on at least one deflection surface (16) radially outwards, in a direction away from the central axis of the housing base (4), and on at least one other deflection surface (18) radially inwards, in the direction of the central axis the housing base (4) is deflected.

3. Mounting device according to claim 1 or 2, characterized in that two strain relief elements (6, 7) are provided, a first, preferably lower and / or in the assembled state facing a pipeline (2), strain relief element (6) having at least one first deflection surface ( 16) and/or deflection edge (23) and a second, preferably upper and/or in the assembled state facing away from a pipeline (2), strain relief element (7) has at least one second deflection surface (18) and/or deflection edge (24).

4. Mounting device according to one of the preceding claims, characterized in that the line (5) in the assembled state between the first deflection surface (16) and / or deflection edge (23) and the second deflection surface (18) and / or The deflection edge (24) is guided or held in a clamping manner, wherein, preferably, the deflection edge (23, 24) is designed as a tooth-shaped or jagged shoulder which, when pulled on the line (5), acts as a clamping edge acting against the tensile force and where, further preferably, the contour of the strain relief element (6, 7) in the area of the deflection edge (23, 24) is designed such that when the line (5) is pulled, there is only a non-positive connection between the strain relief element (6, 7) and the Line (5) comes.

5. Mounting device according to one of the preceding claims, characterized in that the first deflection surface (16) and / or deflection edge (23) and the second deflection surface (18) and / or deflection edge (24) are spaced apart from one another in the axial direction.

6. Mounting device according to one of the preceding claims, characterized in that the axial distance between the first deflection surface (16) and / or deflection edge (23) and the second deflection surface (18) and / or deflection edge (24) is adjustable, in particular by replacement of at least one strain relief element (7) by a strain relief element with a different geometry and/or contour of the deflection surface and/or deflection edge.

7. Mounting device according to one of the preceding claims, characterized in that the first strain relief element (6) and the second strain relief element (7) are guided so as to be displaceable relative to one another in a guide channel (26) of the housing base (4).

8. Mounting device according to one of the preceding claims, characterized in that a sealing element (8) is inserted into the guide channel (26) via the conductor insertion side or the conductor exit side and is fixed in the guide channel (26) and / or that a strain relief element (6) in the assembled state rests against an abutment in the guide channel (26), in particular against the sealing element (8).

9. Mounting device according to one of the preceding claims, characterized in that at least one strain relief element (6, 7) in the assembled state of the strain relief device is guided or held in particular in a clamping manner between the strain relief elements (6, 7) in the assembled state Line (5) rests and / or that the strain relief elements (6, 7) are arranged at a distance from one another in the assembled state.

10. Mounting device according to one of the preceding claims, characterized in that at least one further deflection surface (30) and / or further deflection edge (22) is provided on at least one strain relief element (6, 7), wherein, preferably, the line (5 ) is guided between opposite deflection edges (22, 23) in the assembled state of the strain relief device.