EP4257871A1 - Signal device with plug connector - Google Patents

Abstract

What is proposed is a signaling device (11) with an alternative, simplified assembly, in which the assembly device (12) is designed as a plug connector for plugging and fastening the housing onto the free pipe end (16), the assembly device (12) having a holding element ( 15) with a guide sleeve (1H) for an overlapping connection to the free pipe end (16) and a claw element (18), which is arranged on the guide sleeve (1H) in order to exert a radial contact force on the pipe (16), whereby the guide sleeve (1H) has a guide opening for guiding cables through the guide sleeve (1H) and/or through the holding element (15).

Description

The invention relates to a signaling device for outputting a signal to display a status of a technical device, a technical system or a process sequence or even an object according to the preamble of claim 1.

It is known from the prior art to mount signaling devices, for example for indicating the status of a machine tool, which can in principle also be mounted on the floor or, for example, on a profile rail, including on pipe connections. Such signaling devices are typically used in the form of a signal tower. For installation, the lower part of the signaling device housing includes a receptacle that fits the pipe. The lowest part of the housing and the tube are put together accordingly and fixed with a screw, while the remaining parts are built on top in sections.

The object of the invention is to propose an alternative, simplified assembly for signaling devices.

The task is, based on a signaling device of the type mentioned, determined by the characterizing features of claim 1.

The measures mentioned in the dependent claims make advantageous embodiments and developments of the invention possible.

The signaling device according to the invention is generally used for output a signal that provides information about the status of a technical device, for example. The signaling device can typically be designed as a signal tower, which is arranged on or near the technical device or a system and indicates its operating status. The signal can, for example, take the form of an optical signal by displaying a color coding, for example green for a perfect operating condition, orange for a more critical condition that needs to be checked, for example if maintenance is required, and red if there is a faulty condition or defect that needs to be remedied immediately is or represents a danger.

Furthermore, such a signal can also be used to display a process sequence, for example to monitor individual process steps in a technical manufacturing process.

Another application of a signaling device is to indicate the condition of an object, e.g. whether a temperature in the desired temperature range is found in a cold room or an oven or whether the particle concentration in a clean room does not exceed a certain value.

The signal itself is generated by the signal generating device, which generates, for example, optical or acoustic signals.

The signal generating device can be designed, for example, as a signal tower. In this case, it usually consists of several lighting elements of different colors arranged one above the other, similar to a traffic light, with each color being assigned a different meaning (green, for example, for a regular operating procedure, red for a malfunction, etc.). The signal generating device is in a housing accommodated. The housing is connected to a mounting device in order to mount the signaling device or the signal generating device in a fixed location, for example on or in the area of a technical device or system. The signaling device according to the invention can be attached to the free end of a pipe or a rod in the sense of the invention. As a rule, a tube, i.e. a hollow body, is used in order to be able to lead cables through the interior of the tube to the signal generating device. The tube can be mounted on a foot and placed free-standing in the room or on the floor. Instead, the pipe can also be mounted directly on a machine or system or on a wall.

The signaling device according to the invention is characterized in that it can be installed in a particularly simple manner and particularly quickly. The mounting device is designed as a plug connector and allows it to be quickly plugged onto the end of the pipe.

According to the invention, the mounting device also includes a holding element with a guide sleeve. When mated, the guide sleeve overlaps part of the end section of the tube. Due to the overlapping, mutually supported areas of the guide sleeve and tube, the housing is also supported against tilting or transverse forces perpendicular to the longitudinal axis of the tube.

In addition, the guide sleeve has a guide opening for cable routing, ie cables can be guided through the guide sleeve or the holding element. Electrical cables can therefore be brought to the housing through the pipe invisibly and protected from the outside.

So that the housing remains stable in position along the longitudinal axis of the tube, the mounting device additionally has a claw element which exerts a radial contact force on the tube. When producing the plug connection, the claw element can, for example, be deflected and pressed against the pipe by an elastic restoring force. The guide sleeve can be divided into tabs, for example, which are deflected when plugged together with the pipe and press a claw element against the pipe via an elastic restoring force. It is also conceivable that a radial force is generated by an attachment or fixation, for example by a conical retaining pin or by a screwing process on the mounting device, which presses the claw elements against the pipe.

The signaling device according to the invention enables, in particular, tool-free installation on the pipe. Above all, the signaling device can easily be plugged onto the pipe via the plug connection according to the invention. As a result, sectional assembly of the housing can advantageously be avoided, which would initially involve a complex dismantling of the signaling device. According to the prior art, it was often necessary to assemble in sections, for example in order to be able to insert a locking screw to fix the housing to the pipe when the housing was open, that is, to create access for the tool with which the screw is to be fastened.

Depending on the embodiment of the invention, the guide sleeve can surround the tube or the guide sleeve engages in the tube, i.e. the tube surrounds the guide sleeve. The guide sleeve or the tube can be cylindrical at least in sections. The guide sleeve or tube can interlock with each other in a form-fitting manner. By putting the guide sleeve and tube together, a stable, supportive positioning of the housing relative to the tube can be achieved immediately.

An embodiment variant is also conceivable in which the guide sleeve surrounds the tube on the outside and at the same time supports it from the inside, i.e. is inserted into the tube, so that a particularly stable holder is achieved.

The claw element can exert a contact force on the outer wall of the pipe when the guide sleeve surrounds the pipe. Conversely, the claw element can also exert a contact force on the inner wall of the pipe when the guide sleeve is inserted into the pipe.

As already explained, the elastic contact force can be implemented in that the holding element can be deflected elastically. For this purpose, for example, the claw element can protrude into the guide opening, and when the tube is inserted into the guide opening, the claw element is pressed radially outwards and generates a counterforce that acts as a contact pressure.

So that the claw element can exert the most homogeneous force possible in relation to the circumference of the pipe Claw element surrounds the guide opening or guide sleeve at least partially, in particular completely. The claw element can also be arranged in sections on a circular line around the longitudinal axis of the pipe, for example it can consist of individual elements that are arranged in regular angular sections. In relation to the guide sleeve, the claw element can be directed inwards or outwards, i.e. press against the inner wall of the pipe or the outer wall of the pipe.

Another embodiment of the invention also provides for tool-free assembly of the housing on the pipe, additionally using a pin that can be used without an additional tool. The pin tapers conically at least in sections on its outer jacket and can be inserted into the guide opening. On the one hand, the conical shape enables the pin to be easily inserted into the opening with the narrow end, but when the pin is inserted and as the diameter increases, the outer wall of the pin then presses against the guide sleeve. This force effect can be used to fix the holding element on the pipe. The force can also be transferred to the claw element and press it more strongly against the pipe, thus increasing the holding force.

A cable bushing is advantageously provided through the pin in order to be able to flexibly pull any cables through the pin. This can be designed as a through hole. Especially when the pin is inserted on the longitudinal axis of the pipe, it does not block the cable routing.

How strongly the housing should be fixed to the pipe depends largely on the application of the signaling device, but also on the choice of material for the pipe and claw element or guide sleeve. Depending on the material combination, the frictional connection between the guide sleeve or claw element on the one hand and the pipe on the other changes. The friction should not be too great for easy installation on the pipe so that the holding element can be attached without any problems, in which the surfaces consequently move past each other. On the other hand, stable storage and holding of the housing can be achieved through a good frictional connection. To generate the necessary friction, the soft component, e.g. the corresponding plastic, presses against the pipe surface. The term claw element is broadly defined in the sense of the invention and does not only refer to elements that are designed, for example, as cutting or thorn-shaped, and can therefore cut into the pipe material or at least be pressed into it. On the one hand, not only can removing such fasteners be difficult, they can also damage the pipe. If the pipe is assembled and dismantled frequently, noticeable erosion or deformation of the pipe can occur. On the other hand, the use of cutting edges or the like also enables a secure hold and strong fixation.

If the claw elements are made of metal, their cutting effect can also be stronger. However, if the claw elements are made of plastic or a soft component, they enable an adhesive grip on the pipe. In addition, the guide sleeve and claw element can be formed in one piece if they are made of plastic, for example if they are manufactured as a coherent injection molded part.

The claw elements can also be designed to be flat and achieve a holding effect via friction on the pipe. In such an embodiment variant, the claw elements can be glued to the guide sleeve as pads, for example. Due to the flat design, the friction forces can be increased, while a force effect against cutting or thorn-shaped formations is distributed over a larger area and the pressure on the pipe is reduced.

In a further development of the invention, the mounting device can also include a seal in order to be able to seal the housing against the pipe. This measure can prove to be advantageous, for example, if the signaling device is exposed to gases, vapors or liquids that influence or damage the electronics inside the signal generating device.

The seal can be implemented in two different ways, for example, which can optionally be used individually or together in order to be able to increase the sealing effect. The circumference or along the inner contour of the pipe can be sealed with a sealing ring (e.g. a so-called O-ring). For this purpose, the guide sleeve is typically provided with a groove into which the sealing ring is inserted, which then seals radially against the pipe when plugged together (as a radial seal) and can also advantageously withstand comparatively high pressures.

Alternatively or additionally, for example, an axial seal can also be used, which can be designed on the holding element as a stop for the pipe end. To improve the sealing effect, the axial seal can be designed to be flat.

It is also conceivable that the guide sleeve has a flat sealing ring on its outside or inside in order to be able to seal radially over a larger area with less contact pressure.

A sealing element can also enable a stabilization function with regard to the structure, because the positive fit and the force with which the seal is pressed against the surfaces creates additional support.

The mounting device can additionally have an adapter for receiving the holding element. In principle, the adapter and holding element can also be designed in one piece.

In general, a two-part or multi-part design of the assembly device allows a little more space to be able to pass through or connect cables during assembly.

The holding element can also be designed as an interchangeable element, which is arranged with the guide sleeve in the direction of the pipe or in the direction of the signal generating device. If the guide sleeve faces inwards towards the signal generating device, a holding tube can be inserted into the guide opening while, conversely, with an inverted arrangement, the guide opening can be held in the tube.

In a particularly preferred development of the invention, the housing also includes a connecting element for connection to the mounting device. The structure of the housing then initially provides for the signal generating device in the upper area, with the mounting device being located in the lower housing area. This initially includes the connection element, which can be connected to the adapter, which in turn can be connected to the holding element or already includes it. The holding element is connected to the pipe end. Such a multi-part structure of the mounting device makes it possible to create space for cable routing and cable assembly. At the same time, the housing itself can be attached to the end of the pipe without much effort. If a pin is used for assembly, this can also be inserted into the adapter from above. The connection element, in turn, can also be connected in one piece to the rest of the housing, which also contains the signal generating device.

Due to the multi-part structure, it is also possible to arrange several seals or sealing elements between the connection element and the rest of the housing, between the connection element and adapter, between the adapter and holding element and between the holding element and tube in order to improve the sealing effect of the housing interior with respect to the environment.

If the adapter and holding element are designed separately from one another, the adapter can be locked or connected via a thread Holding element can be connected. This enables a stable connection and quick assembly.

In particular, a thread, a conical thread or a conical lateral surface can each be used to exert a contact force on the guide sleeve and thus on the claw element, so that the claw element is pressed more strongly against the pipe as the diameter of the screwed-in or inserted components increases. On the one hand, the connection between the holding element and adapter can be used for this purpose. It is also conceivable that an additional pin with a conical lateral surface is provided, which is inserted into the guide opening or into the guide sleeve from the adapter side and, due to its conical lateral surface, presses against the guide sleeve. If the adapter and holding element are designed in two parts, the pin can be used to create the fastening connection between the two parts.

But even when connecting the connecting element to the adapter, a thread, a conical thread or a conical lateral surface can be used to exert a contact force for fixation or stabilization. It is also conceivable to use other joining techniques as an alternative or in addition. The connecting element can also be designed in such a way that it acts on the holding element via the adapter or directly and transmits a force accordingly when fastening.

In a particularly preferred embodiment variant of the invention, the holding element can be latched relative to the adapter or the connecting element or connected in such a way that both parts are prestressed against each other and can be released by pressing them together. To prevent the parts from coming loose, a locking device can be placed between the parts, which in turn prevents them from being compressed. The securing device can, for example, be designed as an open securing ring, which partially surrounds the holding element or the adapter and can be pulled off to release the connection. A simple manual unlocking is therefore possible.

Additional connectors can be integrated within the adapter, e.g. M12.

In addition, the holding element can also be used as a ground connection. In this case, claw elements made of an electrical conductor, in particular a metal, can preferably be used, some of which can establish conductive contact with a metal pipe in the attached state. In this way, complicated cable routing to establish grounding can be avoided. At the same time, the safety of the signaling device can be improved.

The pipe can also be viewed as part of the signaling device. As a hollow body, it can be used for wire/cable routing to create a compact signaling device. The free end of the tube can be stored in the guide opening or the guide sleeve engages in the cavity of the tube.

In one embodiment, a column with a tube that has a free end can be part of the signaling device, the tube being connected to the mounting device connected and the free end of the pipe is stored in the guide opening in order to form a free-standing signaling device that can be set up freely in the room.

Examples:

Fig. 1:

eine schematische Darstellung des Bereichs zwischen dem Gehäuse über Montagevorrichtung bis zum Rohr für ein Signalgerät gem. der Erfindung,

Fig. 2:

eine perspektivische Darstellung eines Adapters und eines Halteelements mit Krallelementen, sowie

Fig. 3:

einen Sicherungsring, und

Fig. 4:

eine schematische Darstellung des Bereichs analog zu Fig. 1 für ein weiteres Signalgerät gem. der Erfindung mit einem Fixierstift.

Embodiments of the invention are shown in the drawings and are explained in more detail below with further details and advantages. Show in detail:

Fig. 1:

a schematic representation of the area between the housing via the mounting device to the pipe for a signaling device according to the invention,

Fig. 2:

a perspective view of an adapter and a holding element with claw elements, as well

Fig. 3:

a locking ring, and

Fig. 4:

a schematic representation of the area analogous to Fig. 1 for another signaling device according to the invention with a fixing pin.

Figure 1 shows a part of a signaling device 1 according to the invention with a mounting device 2, which can be connected to a connection element 3 of the housing of the signaling device 1 and comprises an adapter 4 and a holding element 5. The connection element 3 can be directly connected to the rest of the housing (not shown), in which the actual signal generating device is also housed. In the view Figure 1 the remaining part of the housing will be with the Signal generating device is placed on the connecting element 3 from above and locked using a screw cap with a bayonet.

The adapter 4 represents an intermediate element between the connection element 3 and the holding element 5. The holding element 5 in turn serves for the direct connection to the tube 6. In the present case, the tube 6 has a base 7 to widen the installation area and to freely set up the signaling device 1 on the floor.

The tube 6 and all components 4, 5 of the assembly device 2 as well as the connecting elements 3 are hollow on the inside, so that cable routing through the tube 6 and the entire assembly device 2 into the housing is easily possible.

Adapter 4 and holding element 5 are designed here as separate parts. The holding element 5 (cf. Figure 2 ) comprises a cylindrical guide sleeve H, which forms a guide opening as a cavity or like a through hole along the longitudinal axis in the interior, the guide sleeve H in turn being composed of individual, in this exemplary embodiment, six tabs L, of which each tab L has the same angular range ( here therefore slightly less than 60°). The tabs L are each connected to the remaining part of the holding element 5 on the foot side. Inside the holding element 5, a claw element 8 is attached to each tab L, which protrudes radially inwards. The guide opening defined by the guide sleeve H with the inwardly projecting claw elements 8 is designed such that the tube 6 can be inserted into this guide opening of the guide sleeve H, the claw elements 8, prestressed by the adapter, protruding radially inwards to such an extent that They must be pushed outwards a little from the tube 6 when the tube 6 enters the guide opening of the guide sleeve H is inserted. For this reason, the tabs L are only connected to the rest of the holding element 5 on one side, ie the tabs L can be bent slightly radially outwards. Due to the elastic counterforce during deflection, the tabs L in turn press the claw elements 8 radially against the lateral surface of the tube 6. This creates a locking or fixing of the tube 6.

In order to improve the holding effect, it is conceivable, for example, to tilt the claw elements 8 towards the signal generating device, so that inserting the tube 6 is made easier, but pulling it out without further measures is made more difficult.

To release the connection to the tube 6, the holding element 5 can be mounted so that it can move relative to the adapter 4. If the holding element 5 and adapter 4 are moved against each other, the tabs L reach an area of the adapter 4, the inner diameter of which is enlarged by a recess, so that the tabs L can return to the starting position and the tube 6 is released.

The multi-part structure of the mounting device 2 creates more space inside and enables easier cable routing and assembly.

In order to prevent this relative movement between adapter 4 and holding element 5 and thus to avoid that the fixation of the tube 6 is unintentionally removed, for example by a mechanical shock, as in Figure 1 outlined, a locking ring R can be inserted between the holding element 5 and adapter 4. To release the fixation, this ring R must first be removed. The locking ring R made of an elastically resilient material with an open section which serves to allow the locking ring R to be removed from the mounting device 2 can be pulled out, is in perspective again Figure 3 shown.

• das Halteelement 15 mit seiner Führungshülse 1H zum Rohr 16 orientiert ist, also gegenüber der Anordnung aus Figur 1 invertiert dargestellt ist, und
• ein Arretierstift 19 vorgesehen ist, um die Krallelemente 18 gegen die Innenfläche des Hohlraums des Rohrs 16 zu drücken und damit die Verbindung stärker zu fixieren.
• Halteelement 15 und Adapter 14 sind in der vorliegenden Variante nach Figur 4 einstückig als Halteadapter 145 ausgebildet; eine zweiteilige Ausführung mit separatem Adapter und separatem Halteelement ist aber denkbar.

In Figure 4 a further exemplary embodiment of a signaling device 11 is shown with a mounting device 12, which can also be installed on a hollow tube 16 with a base 17. Significant differences to the version according to Figure 1 consist in that:

• the holding element 15 with its guide sleeve 1H is oriented towards the tube 16, i.e. opposite the arrangement Figure 1 is shown inverted, and
• a locking pin 19 is provided to press the claw elements 18 against the inner surface of the cavity of the tube 16 and thus to fix the connection more firmly.
• Holding element 15 and adapter 14 are in the present variant Figure 4 designed in one piece as a holding adapter 145; However, a two-part version with a separate adapter and separate holding element is conceivable.

Otherwise, the holding element 15 is analogous to the holding element 5 according to. Figure 1 educated. The guide sleeve 1H is also used in the variant Figure 4 made up of individual tabs 1L, the free end of which is now on the foot side due to the inverted arrangement. However, since the guide sleeve 1H does not surround the tube 16 but is inserted into the cavity of the tube 16, the claw elements 18 are mounted on the outside.

The pipe is 16 in Figure 4 facing guide sleeve 1H is designed in terms of its outer diameter so that it can be connected to the radially outwardly projecting claw elements 18 in the Cavity inside the tube 16 can be inserted. Only when the locking pin 19 with a conical lateral surface is inserted into the guide opening from above through the opening of the adapter 14 does the pin press radially against the tabs 1L from a certain diameter and thus presses the claw elements 18 against the inner surface of the tube 16.

Above the conical lateral surface, the pin 19 has an edge as a handle 20 with a wide diameter as a stop when the pin is pressed in the direction of the tube 16, so that it cannot be pushed too far into the tube and the handling and removal of the pin 19 is also simplified. In addition, the pin 19 has a through hole along its longitudinal axis for cables to pass through.

In the present case, the connection element 13 can be identical to that Figure 1 be constructed.

What all exemplary embodiments and developments of the invention have in common is that an alternative, simplified assembly for signaling devices is made possible by the assembly device being designed as a plug connector for plugging and fastening the housing onto the free end of the pipe, the assembly device having a holding element with a guide sleeve for an overlapping connection the free end of the pipe and a claw element which is arranged on the guide sleeve in order to exert a radial contact force on the pipe, the guide sleeve having a guide opening for guiding cables through the guide sleeve and/or through the holding element.

List of reference symbols:

1

signaling device

2

Mounting device

3

Connection element

4

adapter

5

Holding element

6

Pipe

7

Stand

8th

Claw element

11

signaling device

12

Mounting device

13

Connection element

14

adapter

15

Holding element

16

Pipe

17

Stand

18

Claw element

19

Pen

20

Handle

145

Holding adapter

1H

Guide sleeve

1L

tab

H

Guide sleeve

L

tab

R

Circlip

Claims (19)

Signaling device (1, 11) for outputting a signal to display a status of a technical device and/or a technical system and/or a process sequence and/or an object, comprising: • a signal generating device for generating the signal and • a housing to accommodate the signal generating device, • wherein the housing has a mounting device (2, 12) for attaching the housing to a free end of a tube (6, 16), • characterized in that
the mounting device (2, 12) is designed as a plug connector for plugging and fastening the housing onto the free pipe end (6, 16), • wherein the assembly device (2, 12) comprises: a) a holding element (5, 15) with a guide sleeve (H, 1H) for an overlapping connection to the free pipe end (6, 16), b) wherein the guide sleeve (H, 1H) has a guide opening for cable routing through the guide sleeve (H, 1H) and/or through the holding element (5, 15) and c) a claw element (8, 18), which is arranged on the guide sleeve (H, 1H) in order to exert a radial contact pressure on the tube (6, 16). Signaling device (1, 11) according to claim 1, characterized in that the guide sleeve (H, 1H) is designed to: • that the free pipe end (6) can be inserted into the guide opening and stored therein, and/or • to rest with its lateral surface on the inner wall of the free pipe end (16) and to hold the housing. Signaling device (1, 11) according to one of the preceding claims, characterized in that the claw element (8, 18): • is arranged on the inside of the guide sleeve (H) in order to exert a radial contact pressure on the outer wall of the tube (6) mounted in the guide opening, and in particular to intervene in the outer wall of the tube (6) to hold the tube (6), or • is arranged on the outside and/or lateral surface of the guide sleeve (1H) in order to exert a radial contact force on the inside of the tube section (16) and in particular to intervene in the inside of the tube (16) to hold the tube (16). Signaling device (1) according to one of the preceding claims, characterized in that the claw element (8) projects into the guide opening and is mounted elastically in such a way that when the tube is inserted into the guide opening it is deflected out of its position by the tube and as a result of the elastic Storage exerts the contact force on the outer wall of the pipe (6). Signaling device (1, 11) according to one of the preceding claims, characterized in that the claw element (8) at least partially, in particular completely, surrounds the guide opening and/or the guide sleeve (H). Signaling device (11) according to one of the preceding claims, characterized in that a pin (19) is provided which has a cable bushing and a pin sleeve which extends conically around the longitudinal axis at least in sections, the pin being designed to be opposite the holding element of the Pipe end opposite side to be inserted into the guide opening so that the pin sleeve presses radially from the inside against the guide sleeve. Signaling device (1, 11) according to one of the preceding claims, characterized in that the claw element (8, 18): • Is designed as a metal insert that is separate from the holding element (5, 15). • Is formed in one piece together with the holding element (5, 15) or • Is made of a soft material to exert a frictional connection. Signaling device (1, 11) according to one of the preceding claims, characterized in that the mounting device (2, 12) comprises a seal to seal the housing from the tube (6, 16), in particular the seal as a radial seal in the guide opening is arranged and / or the seal is designed as a sealing ring. Signaling device (1, 11) according to one of the preceding claims, characterized in that the seal forms a stop for the tube (6, 16) or is designed to cooperate with a stop for the tube (6, 16) in order to between tube (6, 16) and housing to achieve a sealing effect, with the stop in particular having a flat axial seal. Signaling device (1, 11) according to one of the preceding claims, characterized in that the guide sleeve (H, 1H) has a flat sealing ring on its inside and/or outside. Signaling device (1, 11) according to one of the preceding claims, characterized in that the mounting device (2, 12) has an adapter (1, 14) for receiving the holding element (5, 15). Signaling device (1, 11) according to one of the preceding claims, characterized in that the housing has a connection element (3, 13) for connection to the Has mounting device (2, 12). Signaling device (1, 11) according to one of the preceding claims, characterized in that a further sealing element is present in order to seal the housing from the tube (6, 16), in particular the sealing element: • between the connecting element (3, 13) and the mounting device (2, 12) and/or • Is arranged between the connection element (3, 13) and the holding element (5, 15). Signaling device (1, 11) according to one of the preceding claims, characterized in that the adapter (4, 14) is connected to the holding element (5, 15) in a latching manner and/or via a thread. Signaling device (1, 11) according to one of the preceding claims, characterized in that the connecting element (3, 13) is connected to the mounting device (2, 12) and/or the adapter (4, 14) in a latching manner and/or via a thread . Signaling device (1, 11) according to one of the preceding claims, characterized in that the adapter (4, 14) and/or the connection element (3, 13) is/are designed to be connected via the connection to the holding element (5, 15). to exert a radial force on the claw element (8, 18) to increase the contact pressure, in particular the connecting element (3, 13) being connectable to the adapter (4, 14) and/or the holding element (5, 15) via a conical thread and / or is connected, so that by screwing in the thread, the contact pressure is increased due to the increasing thread diameter. Signaling device (1, 11) according to one of the preceding claims, characterized in that the holding element (5, 15) can be stored movably between a first and a second position relative to the adapter (4, 14) and/or relative to the connecting element (3, 13), wherein in the first position the guide sleeve (H, 1H) exerts a contact pressure on the pipe ( 6, 16) and in the second position the guide sleeve (H, 1H) is released relative to the tube (6, 16), a securing device (R) being provided which is used to secure the attachment to the tube (6, 16). between the first and second positions between the holding element (5, 15) on the one hand and the adapter (4, 14) and / or the connecting element (3, 13) on the other hand can be detachably inserted. Signaling device (1, 11) according to one of the preceding claims, characterized in that the holding element (5, 15) is designed as a ground connection. Signaling device (1, 11) according to one of the preceding claims, characterized in that a tube (6, 16) for cable routing is provided with a free end to which the mounting device (2, 12) is connected, the free tube end (6 ) is mounted in the guide opening and/or the guide sleeve (1H) engages in the free pipe end (16).

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