EP2989627B1 - Rotating mechanism for an advertising or information medium - Google Patents

Description

The present invention relates to a drive arrangement and a rotating device for an advertising or information carrier with such a drive arrangement according to the independent claims.

STATE OF THE ART

Numerous devices for fastening round flags, advertising banners and the like in a wide variety of shapes and sizes are known.

the DE 20 2008 007 013 U1 describes, for example, a flag bearer with a rotating function, the latter being accomplished by an electric motor.

The flag bearer is modular in the sense that it can be placed on well-known flagpoles.

Another way is with that in the DE 298 13 071 U1 described invention, in which the rotation is caused by thermals, more precisely by a fan located inside a rotary display.

In the DE 199 06 141 A1 describes an advertising medium that was designed with wind conditions in mind. The object of the invention is to provide an advertising or information carrier which is easy to read both in the absence of wind and in strong winds. The object is achieved by designing the advertising medium in the form of a stiff wing, which is easy to read when there is no wind due to its rigidity and when the wind is stronger, due to an advantageous shape.

The disadvantage of all known devices of this type is that they do not offer any protection against damage in strong winds. Also the DE 199 06 141 A1 apart from an aerodynamic design, does not provide any protection against strong winds.

Also in this context are the JP 2008 191589 A and the CH 687 936 A5 to call.

TASK

The object of the present invention is to overcome the disadvantages of the prior art. In particular, a device is to be provided which can prevent damage to the round flag and / or the flagpole in adverse weather conditions, especially in strong winds.

Preferably, a device is also to be provided which rotates the round flag as well as necessary measures to prevent damage, preferably automatically.

SOLUTION OF THE TASK

The features of independent claims 1 and 6 lead to the solution of the problem.

A device for rotating a flag, in particular a round flag, has a throwing function to avoid damage to the round flag and / or the flagpole or the flag suspension.

A device according to the invention typically has a rotating function for the advertising or information carrier. In a preferred embodiment, the electric motor is provided to provide this rotary function. However, it can also be thought of using any other motor, fan or thermals generated in some other way, or for example solar energy to bring about the rotation.

The drop function according to the invention is preferably activated in strong winds without any user intervention. In a typical exemplary embodiment, an anemometer is provided for this purpose, which triggers a release when a limit value is exceeded.

The dropping function is implemented in such a way that the dropping can take place after activation of the dropping functions on the basis of the flag's own weight, in particular the round flag. In order to ensure the dropping of the advertising or information carrier and / or its securing or storage after dropping, however, it is also possible to use further elements or methods that are not to be defined in detail here in addition to the dead weight.

In an operating state in which the advertising or information carrier is hoisted, the latter is kept in the operating state by means of one or more electro holding magnets. The release function is activated by switching off the electromagnet. Due to the use of an electromagnet, this ejection function is advantageously also activated in the event of a power failure.

It should be mentioned at this point that the discarding function can also be implemented in a different manner. It is conceivable, for example, that the advertising or information carrier is not dropped in a controlled manner after a detector has determined that a limit value has been exceeded. Instead, it can also be released by the wind power as such. In this case, the suspension would be designed in such a way that it no longer supports the advertising or information carrier from a certain wind speed, which leads to a drop in order to avoid damage. One could then, to a certain extent, describe the ejection function as a reversible predetermined breaking point.

Furthermore, it can also be thought of combining such a non-activated suspension with a release function with an activated release function.

Furthermore, the dropping function can also be implemented in the sense of a lowering or reefing function, for example if the advertising or information carrier could be damaged by the dropping. For example, a reversal of a raising function described below can be used for lowering. However, other means are also conceivable which are suitable for lowering the advertising or information carrier as gently as possible after being dropped.

The lowering or reefing function is preferably implemented in such a way that the advertising or information carrier is moved in the direction of a subsurface on which the mast stands when it is lowered or reefed. According to another exemplary embodiment, however, it can alternatively or additionally be thought that the lowering or reefing function should act as the advertising or information carrier hauled in like a ship's sail, ie essentially brought into a position along the mast remote from the subsurface. This can be used, for example, to make the advertising or information carrier inaccessible to unauthorized persons.

In the context of the present invention, reefing or lowering preferably means reducing an area of the advertising or information carrier that is exposed to prevailing weather and, in particular, wind conditions in the hoisted state.

The present invention thus encompasses a passive discarding function, in particular due to the weight of the advertising or information carrier, and also an active discarding function in the sense of a lowering or reefing function.

The lowering or reef function should not be subject to any limits in the context of the present invention. It is therefore possible to provide the lowering or reefing function by means of a separate motor, in particular an electric motor, provided only for this function. It is also possible to provide the lowering or reefing function through the targeted arrangement of the components and devices responsible for the lifting function described below. In particular, straps can be thought of, which are fastened to the advertising or information carrier in such a way that they enable a sail-like reefing.

In a typical embodiment, the hoisting function is also provided. By suitably designing the hoisting function, for example with sensors, position measuring devices or the like described in more detail below, this can be used to put the advertising or information carrier into the operating state after it has been dropped, reefed or stored.

In a typical exemplary embodiment, the advertising or information carrier is hoisted by means of the hoisting function by pulling it upwards, with electronics equipped with sensors monitoring whether it has reached an upper end position in a predetermined adjustable time. If the latter is not the case, it is particularly thought of activating the throwing function and then directly activating the hoisting function. During the second hoisting attempt, the electronics monitor again whether the specified upper end position is reached within the specified time. If the upper end position is not reached again, the device preferably switches off completely.

The design of the drive unit according to the invention ensures that the turning function is inactive while the hoisting function is active. Furthermore, it is ensured, in particular on the part of the electronics, above all by targeted switching off, that the turning function and the hoisting function are inactive while a release takes place.

According to an exemplary embodiment, the term drive unit is understood to mean all parts of the device apart from a base or a base part to be described later.

It can be thought of making the motor speed adjustable. Furthermore, it can be thought of making the engine speed different and adjustable for the various functions.

When the upper end position is reached, the direction of rotation of the motor is reversed.

The hoisting function is preferably activated when the wind speed falls below a limit value.

The exemplary embodiments described above are suitable, individually or in a suitable combination, to protect flags, in particular round flags, and / or flagpoles or other suspensions of advertising or information carriers and the like from damage by strong winds. In a preferred exemplary embodiment, the ejection function is activated when a certain wind speed is exceeded. The advertising or information carrier is thrown off, which protects it from damage. If the provided anemometer registers that the wind speed falls below a certain level after being dropped, the hoisting function is activated and the advertising or information carrier is put back into the operating state.

The device is thus suitable for guaranteeing an effective advertising presentation of the advertising space whenever the wind speed is below a limit value above which damage is to be expected. In other words, a device according to the invention is suitable for ensuring the presentation of the advertising space over a maximum period of time and at the same time minimizing the risk of damage from strong winds.

Of course, it can be thought of adapting the anemometer or, in particular, its limit values to the local conditions. Both the shape, design and stability of the advertising or information carrier and / or the assigned flagpole or the assigned suspension, as well as the typically occurring wind and weather conditions at the location of the advertising or information carrier can play a role. Furthermore, the anemometer can be set in such a way that the limit values must not be exceeded or undershot over a certain period of time in order to activate the release or hoisting function. In this way, it can be avoided that in the case of wind strengths that move around at least one of the set limit values over a long period of time, the throwing and / or hoisting function is not activated frequently in succession.

It is also conceivable to use other sensors, for example rain or light sensors. When using these sensors, both an advertising aspect and a safety aspect can be in the foreground. For the purposes of the advertising aspect, it can be thought of, for example, to present an advertising space with advertising for ice cream only when the sun is shining, and to discard this advertising space when it is raining. In terms of the safety aspect, it can be thought, for example, to activate the release function even when it rains. It can be considered here that rain does not harm the advertising or information carrier, but that rain often is followed by strong wind, which can damage the advertising or information carrier.

If the anemometer is damaged, for example as a result of hail or other influences, a motion sensor assigned to the flagpole can contribute to the security of the advertising or information carrier. If the anemometer is damaged and can no longer register strong winds, the flag remains hoisted in strong winds. Due to the energy of the wind attacking the flag, the flagpole is also moved or the mast shakes. This shaking is now registered by the motion sensor, which in turn activates the discard function. The release triggered by the motion sensor on the mast also takes place preferably when the anemometer does not rotate, for example as a result of damage. It is thought that the electronics check whether the anemometer rotates in the event of shaking.

It is also thought to activate the ejection function if the motor is braked too hard while the turning function is active. This can be counteracted by various external influences, whereby the holding of the advertising or information carrier by children playing or getting caught in trees or bushes should only be mentioned here by way of example.

In a preferred exemplary embodiment of the device according to the invention, only one drive unit, in particular only one motor, is provided for providing the turning function and the hoisting function. Thus, a device can be implemented in a space-saving and cost-saving manner as possible. Without departing from the essence and scope of the invention, however, it is also conceivable to provide several drive units for the various functions.

In one embodiment of the device with only one drive unit, gears are preferably provided for the use of a motor torque for the hoisting and rotating function. By means of a clutch, for example an electromagnetic clutch, a ball catch, and / or freewheel bearings, several functions of the device or the associated gear can be driven by just one motor shaft in a simple manner. The gears used can be epicyclic or bevel gears, for example.

In a typical exemplary embodiment, the hoisting function is not required permanently. The transmission responsible for the hoisting function is therefore advantageously connected to the motor shaft via the coupling, in particular the electromagnetic coupling or the ball catch.

The transmission, which is often active over longer periods of time and which is assigned to the rotary function, is connected to the motor shaft in a preferred embodiment by means of a freewheel bearing. A direction of rotation of the motor can thus be used to control whether the rotation function is active.

However, instead of the transmission and the clutch described above, other types of torque transmission or interruption are also conceivable.

The device according to the invention is not dependent on an embodiment of the advertising or information carrier. The latter are therefore conceivable in many known and also other shapes, sizes, etc., for example in the more common shape Flags of any size, in the form of packaging such as beverage containers or in the form of another product to be advertised.

The device is preferably designed in such a way that it is suitable for being mounted in a simple manner, for example on existing flagpoles or the like.

The parts of the device that rotate relative to one another can be supported in various ways. In addition to a ball bearing, the present invention is also intended to include, for example, a plain bearing.

Figure description

• Figur 1 eine perspektivische Ansicht eines Werbe- oder Informationsträgers mit zugeordneter Drehvorrichtung in einem gehissten Zustand;
• Figur 2 eine perspektivische Ansicht einer Drehvorrichtung gemäss Figur 1 ohne Werbefläche;
• Figur 3 eine perspektivische Teilansicht des Werbe- oder Informationsträgers gemäss Figur 1 im gehissten Zustand;
• Figur 4 eine teilweise geschnittene perspektivische Teilansicht einer Antriebseinheit und eines Aufzugteils im gehissten Zustand;
• Figur 5 eine geschnittene Seitenansicht einer Antriebseinheit und eines Aufzugteils im gehissten Zustand;
• Figur 6 eine geschnittene perspektivische Ansicht einer Antriebseinheit und eines Aufzugteils;
• Figur 7 eine geschnittene perspektivische Ansicht gemäss Figur 6, jedoch mit Windmesser und Steuerungsplatinen;
• Figur 8 eine perspektivische Teilansicht einer drehvorrichtungsseitigen Befestigungseinrichtung sowie eine Seitenansicht einer werbeflächenseitigen Befestigungseinrichtung;
• Figur 9a eine perspektivische Ansicht eines unteren Endes der Drehvorrichtung;
• Figur 9b zwei schematische Teilansichten nach Figur 9a;
• Figur 10 eine perspektivische Ansicht einer weiteren Ausführungsform der Erfindung;
• Figur 11 eine geschnittene Ansicht einer weiteren Ausführungsform der Erfindung;
• Figur 12 eine geschnittene Ansicht einer weiteren Ausführungsform der Erfindung,
• Figur 13 eine geschnittene Teilasicht einer alternativen Ausführungsform einer Antriebseinheit,
• Figur 14 eine perspektivische Ansicht gemäss Figur 14,
• Figur 15 a eine geschnittene Ansicht einer Anordnung umfassend eine Motorwelle 11.2, eine Kugelrastung 76 und einen Elektrohaftmagneten 24.2 im geschlossenen Zustand,
• Figur 15 b eine Anordnung nach Figur 15 a im offenen Zustand,
• Figur 16 eine Explosionansicht nach Figur 15.

Further advantages, features and details of the invention emerge from the following description of preferred exemplary embodiments and with reference to the drawings; these show in:

• Figure 1 a perspective view of an advertising or information carrier with an associated rotating device in a hoisted state;
• Figure 2 a perspective view of a rotating device according to Figure 1 without advertising space;
• Figure 3 a perspective partial view of the advertising or information carrier according to Figure 1 when hoisted;
• Figure 4 a partially cut perspective partial view of a drive unit and an elevator part in the hoisted state;
• Figure 5 a sectional side view of a drive unit and an elevator part in the hoisted state;
• Figure 6 a sectional perspective view of a drive unit and an elevator part;
• Figure 7 a sectional perspective view according to Figure 6 , but with anemometer and control boards;
• Figure 8 a perspective partial view of a fastening device on the rotating device side and a side view of a fastening device on the advertising surface;
• Figure 9a a perspective view of a lower end of the rotating device;
• Figure 9b two schematic partial views according to Figure 9a ;
• Figure 10 a perspective view of a further embodiment of the invention;
• Figure 11 a sectional view of a further embodiment of the invention;
• Figure 12 a sectional view of a further embodiment of the invention,
• Figure 13 a sectioned partial view of an alternative embodiment of a drive unit,
• Figure 14 a perspective view according to Figure 14 ,
• Figure 15 a is a sectional view of an arrangement comprising a motor shaft 11.2, a ball catch 76 and an electromagnetic holding magnet 24.2 in the closed state,
• Figure 15 b an arrangement according to Figure 15 a in the open state,
• Figure 16 an exploded view after Figure 15 .

In Figure 1 an advertising or information carrier 1 is shown in the hoisted state. The drive unit 8 is located at an upper end of the device. An advertising area 7 and a flagpole 2 can also be seen. Figure 2 shows a rotating device 49 mounted on the flagpole 2 without advertising space attached to it. The fastening devices 50 on the rotating device side can be clearly seen. They are connected to the drive unit 8 or to a retaining ring 51 via struts 46.

In the Figure 3 The partial view shown shows an upper area of the advertising or information carrier in the hoisted state. The advertising space is connected to the rotating device by means of a fastening device 48 on the advertising surface side via the fastening device 50 on the rotating device side. The latter is in turn fastened to the upper elevator part 23 by means of struts 46. An anemometer 6 is also attached to an upper end of a cover of a drive unit 8.

In Figure 4 a drive unit 8 without a cover and an upper elevator part 23 is shown. The upper elevator part 23 is in an upper end position, so the rotating device shown here only as a detail is in the hoisted state. The drive unit 8 and the upper elevator part 23 are connected to one another via two belts 20. Here, the bands 20 are fastened to a suspension 47 fastened to the receiving rim 43. Two rollers 21 on the outside of a roller carrier 29 of the drive unit 8 support the belts 20 at the other end. A retaining clip 18 is assigned to each of the rollers 21. The rollers 21 are each mounted on a shaft 57 passing through the roller carrier 29. The shaft 57 is assigned to a bevel gear 9 inside the drive unit 8.

It should be mentioned here that the present invention is not limited to an embodiment with two bands. Rather, the provision of only one band and the provision of more than two bands should also be encompassed by the present invention. Instead of bands, for example, ropes and / or cords can also be thought of, which fulfill the function of the bands.

The receptacle rim 43 of the upper elevator part 23 is integrally formed with receptacles 56. Starting from the receptacles 56 and mounted in them, the elevator part has struts 46.

Figure 5 shows a sectional side view of the device. The upper elevator part 23 is in the upper end position, the rotating device is thus in the hoisted state. At an upper end of the drive unit 8, the assembly foot 34 can be seen with the anemometer 6 placed thereon. Furthermore, a cover 33 surrounding the roller carrier 29 is shown. Inside, the planetary gear 15 and the bevel gear 9 are shown. An electric motor 4 is located below the gears 9, 15. Control boards can be seen below the electric motor 4.

Struts 46 mounted in receptacles 56 are fastened to the receiving rim 43 of the upper elevator part 23. The struts 46 here support the fastening device 50 on the rotating device side.

In Figure 6 a sectional perspective view of the drive unit 8 with the upper elevator part 23 without a cover is shown.

The retaining ring 43 comprises a first half-shell 72 and a second half-shell 73. Furthermore, pipe clamps 74 are provided.

At the top of the roller carrier 29, a mounting plate 31 with a luster terminal 32 fastened thereon is attached in the middle.

On the outside of the roller carrier 29, two opposing rollers 21 are attached. The rollers 21 are each mounted on a shaft 57, the shafts 57 passing through the roller carrier 29. In the interior of the roller carrier 29, a gear wheel 58 is assigned to each shaft, which in each case comes into engagement with a further gear wheel 59. The gear 59 is mounted on the drive shaft 30 of the bevel gear 9. On one of the gear 59 A bevel gear 22 supports the end of the drive shaft 30 at the opposite end.

The clutch shaft 16 is connected to the motor shaft 11 via an electromagnetic clutch 10. The electromagnetic clutch 10 has an armature part 10a, a rotor 10b and a support disk 10c. The motor shaft 11 is also connected to the electric motor 4 via a motor coupling 38. A motor anti-rotation device 39, an adapter ring and torsion pins 41 are assigned to the electric motor 4.

The sun gear 13 of the planetary gear 15 is mounted on the motor shaft 11. A freewheel bearing 14 is pressed into the sun gear 13.

A slip ring capsule 37, which is fastened in an armature sub-plate 36, is located below the electric motor 4. The anchor part plate 36 is held on the base part 64 by means of spacer rollers 35.

The upper elevator part 23 has a retainer ring 43 with receptacles 56 for the struts. Furthermore, a suspension 47 for fastening the band 20 is molded onto it. Electromagnetic holding magnets fixed on the base part 64 by means of a screw 75 touch in the in Figure 6 In the upper end position, pins 45 of the drive unit 8 also come into engagement with pin receptacles 60 of the elevator part.

In the Figures 13 to 16 an alternative embodiment is shown in which the coupling 10 is replaced by a ball catch 76. The bevel gear is 22.2 in this case supported at the end on the motor shaft 11.2, a coupling shaft 16 is not provided. The bevel gear 22.2 mounted at the end on the motor shaft 11.2 is in engagement with two bevel gears 22.2, which two drive shafts 30.2 are placed on the ends. At the other end, a roller 21.2 is placed on each of the two drive shafts 30.2. As in the Figures 15 and 16 The ball catch 76 comprises a ring adapter 77 with ball cups 78, four balls 79, a ball carrier 80, an armature 81 with recesses 84 and a circumferential projection 87 and a rotary plate 82 the ring adapter 77 connected by means of three screws. A holding magnet 24.2 is arranged above the rotating plate 82.

In Figure 7 a sectional perspective view of the rotating device with mounting foot 34, anemometer 6 and control boards 44 is shown.

In the Figure 8 are shown, not true to scale, a perspective partial view of a rotating device-side fastening device 50 and a side view of a fastening device 48 on the advertising surface. The fastening device 50 on the rotating device side comprises two rings 61, the position of which with respect to one another is fixed by means of retaining clips 55. The fastening device 48 on the advertising surface side comprises an end area of a round flag 7. This end area is sewn around to form a circumferential loop 52, a hose, for example a pneumatic hose 53, being introduced into the loop 52.

Figure 9a shows a lower end of the rotating device without a cloth in the hoisted state. A retaining ring 51 is attached to the mast 2 below the lower elevator part 62. There is a distance A between the lower elevator part 62 and the retaining ring 51. The lower elevator part 62 comprises two receiving rims 43 with receptacles 56 for fastening the struts 46.

Figure 9b shows schematically the two rings 61 with retaining clips in a closed and in an open state.

In Figure 10 and Figure 12 locking plates 66 with lugs 67 can be seen, and ramps 68 and electromagnets 65 are shown.

In Figure 11 a plain bearing 69 can be clearly seen.

Referring to the Figures 1 - 12 the functioning of the device according to the invention is explained as follows:
As in the Figures 1, 2, 3 and 8th The rotary device 49 shown serves on the one hand to fasten the round flag 7 to the mast 2. For this purpose, the rotary device 49 is first fastened to a mast 2 for a flag. In the following, the round flag 7 is connected to the fastening device 50 on the rotating device side with the aid of the fastening device 48 on the advertising surface. To establish this connection, the two rings 61 held together by retaining clips 55 are opened at one point. For this purpose, in addition to firmly welded retaining clips 55, screwed or otherwise reversibly connected retaining clips 55 are expediently provided. The rings 61 are preferably opened at a point at which there are two retaining clips 55 which are arranged in pairs next to one another and reversibly connected to one another. The rings 61 are not closed in themselves, but each have two end sections 71 facing one another. The two holding clips 55 reversibly connected to one another are each assigned to an end section 71.

In order to connect the round vane 7 to the fastening device 50, a connection of the reversibly interconnected retaining clips 55 is released. Starting at the end sections 71, the round vane 7 is now connected to the fastening device 50, in that the round vane 7 is pushed between the two rings 61 in such a way that the round vane slips through 7 is prevented between the rings 61 by the hose 53 and the round vane 7 is thus securely mounted in the fastening device 50. The rings 61 are then fixed again by means of the retaining clips 55, which are to be reversibly connected to one another. Because the largest diameter D of the fastening device 48 on the advertising surface is selected to be larger than the gap 54, the cloth 7 is fixed on the rotating device 49. In the manner described above, the cloth 7, which has fastening devices 48 on the advertising surface side with loops 52 at both ends, is fixed to both fastening devices 50 on the rotating device side.

In addition to a hose 53, other means can also be thought of which are suitable for fixing the cloth 7 to the rotating device 49 as described above.

If the cloth is inserted into the in Figure 9 The fastening device 50 shown on the rotating device side associated with the lower elevator part 62 is clamped, then the fabric is tensioned by the weight of the lower elevator part 62 itself. For this purpose, the receiving ring 43 of the lower elevator part 62 is mounted in a sliding manner on the mast 2. Furthermore, the dimensions of the cloth are chosen so that the receiving ring 43 of the lower elevator part is at a distance A from the retaining ring 51 in the hoisted state. The dead weight of the lower elevator part 62 thus rests solely on the cloth, whereby it is tightened.

The Figures 3 to 7 the functionality of the rotating device 49 with rotating, hoisting and throwing functions can be seen. The drive unit 8 of the rotating device 49 is attached to the upper end of the mast 2. At the top of her head she wears an anemometer. In the hoisted state, the upper elevator part 23 rests against the drive unit 8. As in Figure 6 As shown, the holding solenoids 24 come into direct contact with the upper elevator part 23 and the pins 45 come into engagement with the pin receptacles 60. The upper elevator part 23 is thus held in the correct position with respect to the drive unit 8. The rotating function, which is active in the hoisted state, is made possible by a transmission a motor torque via the planet gears of the planetary gear 15 to the web 17. Together with the web 17, the roller carrier 29 rotates and in the hoisted state thus also the round flag 7. The reason for this is that its upper end via the struts 46 with the upper elevator part 23 is connected, which is in turn connected in the hoisted state by the holding electromagnets 24 and the engagement of the pins 45 to the drive unit 8 in a rotationally secure manner.

Here, the rotation function is only active when the direction of rotation of the motor is selected in which the freewheel bearing 14 locks inside the sun gear 13. If the other direction of rotation of the motor is selected, the freewheel bearing 14 enables the motor shaft 11 to rotate without the sun gear 13 being rotated.

Furthermore, the electromagnetic clutch 10 or the ball catch 76 is not closed while the rotary function is active. Thus, there is no torque transmission from the motor shaft 11 to the coupling shaft 16 or from the motor shaft 11.2 to the ball carrier 80. As explained below, this torque transmission would cause the drive shafts 30, 30.2 of the rollers 21, 21.2 to rotate. If the anemometer 6 registers that a preset limit value has been exceeded, the release function is activated. By stopping the electric motor 4, the rotation of the motor shaft 11 is stopped, as a result of which torque can no longer be transmitted to one of the gears 9, 15. The holding electromagnets 24 are switched off, whereby the upper elevator part 23 slides downwards on the mast 2 by its own weight. The lower elevator part 62 also slides down and comes to rest on the retaining ring 51. The upper elevator part 23 comes to rest on the lower elevator part 62. The round flag 7 attached to both splitting parts 23, 62 is thus caught and is stored in a windproof manner after it has been dropped.

If the anemometer 6 registers that a preset limit value is not reached, the hoisting function is activated. The electric motor 4 is activated, rotating in the direction in which the freewheel bearing 14 does not lock. Thus, there is no torque transmission via the planetary gear 15 and no rotation. However, the electromagnetic clutch 10 or the ball catch 76 is closed, so the torque of the motor shaft 11 or 11.2 is transmitted to the clutch shaft 16 or to the ball carrier 80. As explained below, torque is transmitted to the rollers 21 via the bevel gear 9 Mast 2 takes place.

It should be mentioned that a lowering or reefing function can be provided, for example, by pulling the lower elevator part 62 up, since pulling the lower elevator part 62 up results in a reduction in the area of the advertising or information carrier 1 exposed to the wind.

The in Figure 6 Following the exemplary embodiment shown, torque is transmitted from the motor shaft 11 to the rollers 21 when the electromagnetic clutch 10 is closed. The rotation of the motor shaft 11 then causes a rotation of the coupling shaft 16 on which the bevel gear 22 rests at the end. The rotation of the bevel gear 22 resting on the coupling shaft 16 in turn causes a rotation of the two bevel gears 22, which at the ends bear against the two drive shafts 30. The torque is transmitted via gears 58, 59 to the shafts 57 and thus to the rollers 21 mounted on the ends of the shafts 57.

The alternative in the Figures 13 to 16 Following the exemplary embodiment shown, torque is also transmitted from the motor shaft 11.2 to the rollers 21.2 when the ball catch 76, which replaces the function of the electromagnetic clutch according to the exemplary embodiment shown in FIGS. 13 to 16, is closed. As from comparing the Figures 15 a and 15 b can be seen, is the one with the armature 81 in operative connection Rotary plate 82 in the closed state by the force of the electromagnet 24.2 on the latter. The rotating plate 82 is preferably connected to the armature 81 in a freely supported manner. Compared to the in Figure 15 b As shown in the position shown, the electromagnet 24.2 thus causes the rotating plate 82 and with it the armature 81 to move in the direction of an arrow 86 towards the electromagnet 24.2. Here, a form fit between the rotating plate 82 and armature 81 causes the force of the electromagnet 24. 2 on the rotating plate 82 at the same time to cause the armature 81 to move in the direction of the arrow 86.

In the in Figure 15 b The open state shown, no torque is transmitted from the motor shaft 11.2 to the bevel gear 22.2. The ball carrier 80 is connected to the motor shaft 11.2, for example screwed, and thus rotates together with it. However, there is no positive connection between ball carrier 80 and ring adapter 77. The ring adapter 77 thus rests in the open state. The balls 79 carried by the ball carrier 80 are unable to establish a connection between the ball carrier 80 and the ring adapter 79 in the open state, since they can move radially outward relative to an imaginary central longitudinal axis of the motor shaft 11.2 instead of coming to rest in the ball cups 78. This evasion of the balls 79 is additionally facilitated by the recesses 84. However, it can also be envisaged to dispense with the recesses 84.

In the in Figure 15 a, the open state shown, the balls 79 cannot move radially outwards or into the recesses 84. Rather, the balls 79 are held in the annular cups 78 by the projection 87. In this way, the ball carrier 80 enters into a form-fitting connection with the ring adapter 77, which connection is mediated by the balls 79 in the ball cups 78.

In the closed state, a rotation of the motor shaft 11.2 thus causes a rotation of the ring adapter 77. The ring adapter 77 in turn is by means of one or more screws 83 are connected to the bevel gear 22.2, which in the closed state therefore also rotates with the motor shaft 11.2.

A force that is transmitted from the projection 87 to the balls 79 and drives the latter into the ball cups 78 in the closed state can be influenced via a selected position of the rotating plate 82 or the armature 81 along an arrow direction 86. By a suitable choice of a point on the ball 79 at which the projection 87 engages, the force effect on the ball 79 can be selected to be larger or smaller.

the Figures 10 and 12th show the function of the locking plates. If the upper elevator part 23 moves in the direction of an arrow 70, a nose 67 of the locking plate is guided over a ramp 68. After the ramp 68 has been passed, the locking plate is held in position by a magnet 65.

Figure 11 shows a device which has a slide bearing 69. <b> List of reference symbols </b> 1 Advertising or information carriers 34 Mounting foot 67 nose 2 Flagpole 35 Spacer roller 68 ramp 3 Flag hanging 36 Anchor plate 69 bearings 4th Electric motor 37 Slip ring capsule 70 arrow 5 E-magnet 38 Engine coupling 71 End section 6th Anemometer 39 Motor anti-rotation device 72 first half-shell 7th Round flag 40 Adaptation ring 73 second half-shell 8th Drive unit 41 Twist pin 74 Pipe clamp 9 Bevel gears 42 Fuse 75 screw 10 E-magnet coupling a) armature part; b) rotor; c) support washer 43 Receiving wreath 76 Ball catch 11 Motor shaft 44 Control board 77 Ring adapter 12th Upper end position 45 Pen 78 Ball bowl 13th Sun gear 46 Striving 79 Bullet 14th Freewheel bearing 47 suspension 80 Ball carrier 15th Planetary gear 48 Fastening device on the advertising surface 81 anchor 16 Coupling shaft 49 Turning device 82 Turntable 17th web 50 Fastening device on the rotating device side 83 screw 18th Retaining clip 51 Retaining ring 84 Recess 19th Bullet 52 loop 85 Countersunk screw mount 20th tape 53 Retention means 86 arrow 21 role 54 gap 87 Cantilever 22nd Bevel gear 55 Retaining clip 88 23 Upper part of the elevator 56 recording 89 24 E-Haftmaqnet 57 wave 90 25th bearings 58 gear 26th Adjusting spring 59 gear 27 Anchor plate 60 Pen holder 28 bearings 61 ring 29 Roller carrier 62 Lower part of the elevator 30th drive shaft 63 Ring gear 31 Mounting plate 64 Base part 32 Luster terminal 65 magnet A. distance 33 cover 66 Locking plate D. diameter

Claims (8)

1. Device (49) for the rotation of flag (7) comprising a flagpole (2),
   characterised by
   a drive unit (8) adapted to rotate the flag (7) and comprising at least one electro-holding magnet (24);
   further characterised by an upper hoisting part (23), which on the one hand is connected to the drive unit (8) via at least one band (20), a cord or a rope, and which on the other hand is connected to the drive unit (8) in a hoisted operating state via the at least one electro-holding magnet (24) in a manner secured against rotation,
   wherein the upper hoisting part (23) is further connected to the upper end of the flag (7) via struts (46);
   wherein the drive unit (8) is arranged to pull up the upper hoisting part (23) on the at least one band (20), the at least one cord or the at least one rope;
   the electro-holding magnet (24) being arranged, on the one hand, to hold the flag (7) in a hoisted operating state; and, on the other hand, being arranged to allow the flag (7) to be dropped by its own weight after being switched off.
2. Device according to claim 1, characterised by a wind gauge (6), which is set up to trigger the release when a limit value is exceeded and to trigger a hoisting when the value falls below a limit value.
3. Device according to at least one of the claims 1 or 2, characterized in that the drive unit (8) comprises:

   - an electric motor (4) with a motor shaft (11) which cooperates with or is connected to a first transmission part;

   - an electromagnetic clutch (10) or a ball detent (76) provided for connecting the motor shaft (11) to a coupling shaft (16), which coupling shaft (16) cooperates with or is connected to a second transmission part;

   - a first transmission comprising the first transmission part, the rotary function being performed by this first transmission;

   - a second gear comprising the second gear part, the hoisting function being performed by said second gear;
4. Device according to claim 3, characterized in that the first gear is a planetary gear (15) and the first gear part is a sun wheel (13), and that the second gear is a bevel gear (9) and the second gear part is a bevel gear (22), the second gear being connected to the motor shaft (11) by means of the electromagnetic clutch (10).
5. Device according to one of the claims 3 or 4, characterized in that a freewheel bearing (14) is formed in the sun wheel (13), so that the sun wheel (13) is only moved in one direction of rotation of the motor shaft (11).
6. Method of operating a device (49) for rotating a flag (7), characterised in that a hoisting function is activated after the wind speed falls below a limit value to hoist the flag (7) upwards, wherein the flag (7) is held in a hoisted operating state by at least one electro-holding magnet (24), and wherein a dropping function is activated by switching off the electro-holding magnet when a wind speed limit value is exceeded or in the event of a power failure and effects a dropping by the own weight of the flag (7).
7. Method according to claim 6, characterised in that the same drive unit (8) effects the turning and the hoisting function.
8. Method according to one of the claims 6 or 7, characterised in that a position measurement of the flag (7) takes place while the hoisting function is active, and that the hoisting function is active until the flag (7) has reached a certain height.

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