EP2737819A1 - Mast assembly for a parasol system and parasol system - Google Patents

Abstract

The assembly (2) has a hollow mast section (3), and another hollow mast section (4) comprising a longitudinal slot. A driver is moved in the slot and coupled with a supporting sleeve (6). The mast sections are connected with one another over an adapter, where the adapter comprises sections that project into the respective mast sections. The adapter is connected with the mast sections in a torque-proof manner. An electric motor is arranged in the former mast section, and drives a spindle arranged in the latter mast section, where the adapter has a passage opening. An independent claim is also included for a parasol system.

Description

The invention relates to a mast arrangement for a screen system, wherein the mast assembly comprises a first at least partially hollow mast section and a second associated at least partially hollow mast section with a longitudinal slot in which a slot through the driver is movable.

From the DE 100 02 111 C2 a carrying device is known, which has a mast. The mast is interrupted by a housing in which a motor, a transmission and an accumulator are arranged. Mast sections must be connected to the housing by means of welding, which makes the manufacture of the mast altogether relatively complicated.

The object of the present invention is to provide a visually appealing mast arrangement on the one hand and to simplify the assembly of the mast arrangement on the other hand.

This object is achieved according to the invention by a mast arrangement for a screen system, wherein the mast assembly comprises a first at least partially hollow mast section and an associated second at least partially hollow mast section with a longitudinal slot in which a slot through the driver is movable, wherein the first and second Mast section are connected to each other via an adapter having a first projecting into the first mast section and at least a second section projecting into the second mast section, wherein the adapter is rotatably connected to both the first mast section and with the second mast section.

Such a mast arrangement is particularly suitable for a screen system, such as a parasol or a rotary dryer. The two mast sections are connected to one another via an adapter, wherein the sections of the adapter can each be arranged in a form-fitting manner in corresponding cavities of the mast sections. The adapter may have a collar on which the two mast sections create from both sides. In this case, the outer diameter of the annular collar can correspond to the diameter of the two mast sections, so that the overall result is a continuous stepless outer contour of the mast arrangement.

The adapter can be produced in a particularly cost-effective manner as an injection-molded part, in particular made of plastic.

The adapter may have a plurality of sections which protrude into associated chambers of the second mast section. In particular, the sections may be formed as longitudinally facing projections, whose contour is adapted to the contour of chambers, in particular hollow chambers, which may be present in the second mast section. In this case, the second mast section may preferably be formed as a hollow profile. The second mast section may in particular be an extruded profile. If the adapter has a plurality of sections which protrude into a corresponding plurality of chambers of the second mast section, a rotationally fixed connection between the adapter and the second mast section can be realized solely by the engagement of the sections in the chambers. Additional fasteners that define the adapter with respect to the second mast section are not mandatory. However, it is advantageous if longitudinally pointing threads are provided in the second mast section, into which corresponding screws, which protrude through the adapter, can be screwed. The first mast section may be connected to the adapter, for example, by screwing one or more screws radially through the first mast section into the section of the adapter.

Particular advantages arise when the sections of the adapter are hollow. In particular, at least some portions of the adapter are hollow. This makes it possible, for example, to pass cables through the adapter and thus to electrically connect components arranged in the first mast section and components arranged in the second mast section.

It is particularly advantageous if in the first mast section an electric motor is arranged which drives a spindle arranged in the second mast section, wherein the adapter has a passage opening in which a bearing of the spindle is arranged. The fact that the electric motor is arranged in the first mast section is not additional housing for the electric motor necessary. Through the spindle, a nut can be driven, which moves the driver in the slot of the second mast section. It is easier to realize a bearing for the spindle in the adapter, as to store the spindle in the first or second mast section. Thus, the storage of the spindle can be realized more cheaply. The assembly effort can be reduced thereby.

According to a particularly preferred embodiment of the invention can be provided that the second mast section is formed as a profile having a limit switch profile receptacle in which a limit switch profile is arranged, which has a limit switch for detecting an upper end position and a limit switch for detecting a lower end position. In the prior art of DE 100 02 111 C2 It is already proposed to provide limit switches, which cooperate with the mother driven by the spindle and thereby cause a shutdown of the electric motor when the mother is on the spindle in an upper or lower end position, for example, corresponds to an open or closed parasol. However, it has proven difficult to position these limit switches correctly. According to the invention it is now proposed to provide a limit switch profile, which can be prefabricated. This means that even before mounting the limit switch profile in the second mast section, the limit switches can be positioned on the limit switch profile. Subsequently, the limit switch profile only has to be plugged into the limit switch profile holder. The limit switches are automatically positioned in the correct position. The limit switches may be microswitches.

It can be provided that the limit switch profile is supported on the adapter. The position of the limit switch profile is thus also fixed, which facilitates the correct positioning of the limit switch in the second mast section.

The Limitschalterprofilaufnahme may have anchoring means which cooperate with corresponding anchoring means of the limit switch profile. This serves on the one hand the immovable mounting of the limit switch profile in the limit switch profile holder. On the other hand, can be prevented by the anchoring means that the second mast section in the region of the slot unintentionally widens. For this purpose, it is particularly advantageous if at least one anchoring means is formed as an undercut groove or dovetailed in section.

Further advantages result if at least one sealing lip holder is provided in the region of the slot, in which a sealing lip is held. Preferably, two sealing lip holders are provided, each with at least one sealing lip. Thus, it can be prevented that moisture penetrates into the interior of the second mast section. Electronic components can thus be protected against moisture and dirt.

In this context, it is advantageous if the driver has a sealing lip contact portion which tapers in the longitudinal direction at least to one end of the driver. The driver can thus be wedge-shaped in one area. Thus, the driver can displace the sealing lips to the outside during a movement in the longitudinal direction of the second mast section, so that the sealing lips do not hinder the movement of the driver. on the other hand The sealing lips can then be arranged so that they enclose the driver and in particular completely close the slot above and below the driver.

Further advantages are obtained if an accumulator is arranged in the first mast section. This accumulator is connected to the electric motor and can supply it with energy. The accumulator may be an accumulator which has a low self-discharge and with which a high number of cycles can be run. Furthermore, the accumulator can be intrinsically safe, which precludes a risk of explosion. There may be an automatic charge control and a charge status indicator. Furthermore, a power supply can be provided in order to connect the accumulator to a voltage network can. Alternatively or additionally, one or more solar cells electrically connected to the accumulator may be provided. For example, a solar cell may be provided at the upper end of the mast assembly.

According to one embodiment of the invention, an overload cutoff can be provided for the electric motor. Thus, the electric motor can be switched off, obstacles should obstruct the opening or closing of the screen. Furthermore, the overload shutdown could be used to detect the end points of the opening and closing of the screen. In this case, could be dispensed with the limit switch and the limit switch profile.

In the context of the invention also falls a parasol system with a mast assembly according to the invention.

On the mast assembly, a storage table may be provided. The storage table can be designed in particular round. Furthermore, an LED lighting and a remote control can be provided.

Further features and advantages of the invention will become apparent from the following detailed description of an embodiment of the invention, with reference to the figures of the drawing, which show details essential to the invention, and from the claims. The features shown there are not necessarily to scale and presented in such a way that the features of the invention can be made clearly visible. The various features may be implemented individually for themselves or for a plurality of combinations in variants of the invention.

In the schematic drawing an embodiment of the invention is shown and explained in more detail in the following description.

Fig. 1

eine schematische Darstellung eines Sonnenschirmsystems bei geöffnetem Schirm;

Fig. 2

eine schematische Darstellung des Sonnenschirmsystems bei geschlossenem Schirm;

Fig. 3

eine Vergrößerung eines Details der Fig. 1 und 2;

Fig. 4

eine Explosionsdarstellung einer Mastanordnung;

Fig. 5

die Mastanordnung in zusammengebautem Zustand;

Fig. 6

eine Explosionsdarstellung eines Teils der Mastanordnung;

Fig. 7

eine Längsschnittdarstellung durch eine Mastanordnung;

Fig. 8

eine Draufsicht auf ein Ende eines zweiten Mastabschnitts;

Fig. 9

eine vergrößerte Darstellung eines Teils der Mastanordnung.

Show it:

Fig. 1

a schematic representation of a parasol system with the umbrella open;

Fig. 2

a schematic representation of the parasol system with the screen closed;

Fig. 3

an enlargement of a detail of the Fig. 1 and 2 ;

Fig. 4

an exploded view of a mast assembly;

Fig. 5

the mast assembly in assembled condition;

Fig. 6

an exploded view of a part of the mast assembly;

Fig. 7

a longitudinal sectional view through a mast assembly;

Fig. 8

a plan view of one end of a second mast section;

Fig. 9

an enlarged view of a portion of the mast assembly.

The Fig. 1 shows a shielding system 1 with a mast assembly 2. In the illustrated embodiment, the mast assembly 2 comprises a first mast section 3, a second mast section 4 and a third mast section 5. A support sleeve 6 is longitudinally along the second mast section 4 movable. The carrier sleeve 6 articulated support arms 7 are connected, which in turn are pivotally connected to screen arms 8. By moving the carrier sleeve 6 in the longitudinal direction of the mast assembly 2, the screen 9 can thus be opened and closed. The Fig. 1 shows the open position. In the lower part of the mast assembly 2, a storage table 10 is provided. At the upper end of the screen system 1, a solar cell array 11 is shown. This can be used to drive a drive directly or to charge a battery. The screen system 1 can therefore be operated independently of the mains as a stand-alone solution. In the illustration shown, the screen system 1 has an umbrella stand 12. However, it is also conceivable to anchor the mast assembly 2 firmly on the ground.

While the Fig. 1 shows the support sleeve 6 in an upper end position, shows the Fig. 2 the support sleeve 6 in a lower end position and thus a closed screen. 9

The detail of Fig. 3 can be seen that the second mast section 4 has a slot 15 which is penetrated by a driver 16. The driver 16 is coupled to the support sleeve 6. By moving the driver 16 up and down, the carrier sleeve 6 can thus be moved upwards and downwards. The driver 16 is coupled via a bolt 17 with the support sleeve 6, this coupling is detachable. This is useful in the case, for example, if an electric drive fails and the screen 9 is to be opened or closed manually.

The Fig. 4 shows an exploded view of the mast assembly 2. The first mast section 3 and the second mast section 4 are connected to each other via an adapter 20, while the second mast section 4 and the third mast section 5 are connected to each other via an adapter 21. The adapters 20, 21 each have a section 22, 23 with which they can be inserted into the first mast section 3 or third mast section 5. Furthermore, they have sections 24, 25 with which they can be inserted into the second mast section 4, in particular in chambers of the mast section 4. The adapters 20, 21 furthermore have an annular collar 26, 27, to which the mast sections 3, 4, 5 can abut. The outer diameter of the annular collar 26, 27 corresponds to the outer diameter of the mast sections 3, 4, 5.

A rotationally fixed arrangement of the adapters 20, 21 in the second mast section 4 already results from the sections 24, 25 which protrude into corresponding chambers of the second mast section 4. In addition, however, the adapters 20, 21 can also be fixed in the second mast section 4 by means of axially extending screws 28, 29. At the mast sections 3, 5, the adapter 20, 21 by means of screws 30 which are screwed radially fixed.

Of the Fig. 4 can also be seen that the driver 16 extends through the slot 15. In the mast section 4, a spindle 31 is arranged, which can be fixed and aligned by a lock screw 32 and an adjusting nut 33 in position.

Furthermore, the Fig. 4 can be seen that in the first mast section 3, an electric motor 34 is arranged.

The Fig. 5 shows the mast assembly 2 in the assembled state. Here it can be seen that the mast assembly 2 has a slim, stepless contour. Of the adapters, only the annular collar 26 and the annular collar 27 can be seen.

Fig. 6 shows a further exploded view in the region of the connection of the first mast section 3 and the second mast section 4. Here it can be seen that a motor flange 35 connects to the motor 34. About the motor flange 35, the motor 34 is rotatably disposed in the first mast section 3. Between the motor 34 and the spindle 31, a clutch 36 is provided. A bearing 37 of the spindle 31 is disposed in the adapter 20 when the mast assembly 2 is assembled. For this purpose, the adapter 20 has a passage opening 38. In addition, it can be seen that the portions 24 of the adapter 20 are hollow. They can therefore be used as a cable feedthrough. The motor flange 35 has lateral, in particular groove-like, recesses 39, which also serve as a cable bushing.

The Fig. 7 shows a longitudinal sectional view through a part of the mast assembly 2. Here it can be seen that the driver 16 is connected to a nut 40 which is driven by the spindle 31. When the cam 16 is moved upward, the nut 40 enters the Area of the limit switch 41, which is arranged on a limit switch profile 42. If the driver is moved in the other direction via the nut 40, it comes into contact with the limit switch 43, which is also arranged on the limit switch profile 42. The limit switches 43 are connected to the motor 34 in connection. If they are triggered by the nut 40, this leads to a shutdown of the motor 34. It can also be seen that the limit switch profile 42 is supported on the adapters 20, 21, whereby the position of the limit switch profile 42 in the mast section 4 is fixed.

The Fig. 8 shows an end portion of the second mast section 4. Here it can be seen that on the one hand chambers 50 are provided into which the sections 24 of the adapter 20 and the sections 25 of the adapter 21 can protrude. Furthermore, a limit switch profile receptacle 51 can be seen, in which a limit switch profile 42 can be introduced. The Limitschalterprofilaufnahme 51 has dovetail-shaped anchoring means 52 in cross-section, which cooperate with corresponding anchoring means of the limit switch profile 42. The interaction of the anchoring means 52 prevents the second mast section 4 from widening in the region of the slot 15. In particular, it may be necessary that the second mast section 4 is formed as an extruded profile. In this case, the slot 15 may be sealed with a film of material immediately after manufacture. Now, if the material film is removed, it could lead to a widening of the slot 15. To prevent this, it is expedient to first introduce the limit switch profile. When removing the film closing the slot 15, there is thus at most a slight widening of the slot 15.

A central opening 53 of the second mast section 4 has a contour which is adapted to the outer contour of the nut 40. In particular, contact surfaces or contact surfaces 57 are provided for the nut 40. Thus, the nut 40 is arranged against rotation in the second mast section 4.

In the region of the slot 15, a sealing space 54 is provided which has sealing lip receptacles 55, 56. They serve for the attachment of sealing lips. The slot 15 is bounded by support surfaces 58, 59, in which the driver 16 can be supported when z. B. a wind load acts on the screen. The support surfaces 58, 59 thus prevent the screen from being rotated.

The Fig. 9 shows an exploded view in the region of one end of the second mast section 4. Here are in particular sealing lips 60, 61 can be seen, which bear laterally against sealing lip contact surfaces 62 of the driver 16. The sealing lip contacting surfaces 62 form a sealing lip contacting portion that tapers toward one end of the driver 16. As a result, during a movement of the driver 16, the sealing lips 60, 61 are gradually widened.

Evident is also still the anchoring portion 63 of the limit switch profile 42, which is also dovetailed in cross section and in particular adapted to the contour of the anchoring portion 52. Evident is also a part of a designed as a microswitch limit switch 43, which cooperates with the nut 40 when it passes over the limit switch 43.

Claims (15)

Mast arrangement (2) for a screen system (1), wherein the mast assembly (2) comprises a first at least partially hollow mast section (3) and an associated second at least partially hollow mast section (4) having a longitudinal slot (15) in which a Slit (15) protruding driver (16) is movable, characterized in that the first and second mast section (3, 4) via an adapter (20) are interconnected, the first in the first mast section (3) projecting portion (22 ) and at least one second in the second mast section (4) projecting portion (24), wherein the adapter (20) with both the first mast section (3) and with the second mast section (4) is rotatably connected. Mast arrangement according to claim 1, characterized in that the adapter (20) has a plurality of sections (24) which project into associated chambers of the second mast section (4). Pole arrangement according to one of the preceding claims, characterized in that the sections (22, 24) of the adapter (20) are hollow. Mast arrangement according to one of the preceding claims, characterized in that in the first mast section (3) an electric motor (34) is arranged, which drives a in the second mast section (4) arranged spindle (31), wherein the adapter (20) has a passage opening (38), in which a bearing (37) of the spindle (31) is arranged. Mast arrangement according to one of the preceding claims, characterized in that the second mast section (4) is formed as a profile having a limit switch profile receptacle (51) in which a limit switch profile (42) is arranged, which has a limit switch (41) for detecting an upper End position and a limit switch (43) for detecting a lower end position. Mast arrangement according to claim 5, characterized in that the limit switch profile receptacle (51) anchoring means (52) which cooperate with corresponding anchoring means (63) of the limit switch profile (42). Mast arrangement according to claim 6, characterized in that at least one anchoring means (52) is formed as an undercut groove or dovetail-shaped in section. Pole arrangement according to one of the preceding claims, characterized in that the limit switch profile (42) on the adapter (20) is supported. Mast arrangement according to one of the preceding claims, characterized in that in the region of the slot (15) at least one sealing lip holder (55, 56) is provided, in which a sealing lip (60, 61) is held. Mast arrangement according to one of the preceding claims, characterized in that the driver (16) has a sealing lip contact portion which tapers in the longitudinal direction at least to one end of the driver (16). Mast arrangement according to one of the preceding claims, characterized in that in the first mast section (3) an accumulator is arranged. Pole arrangement according to one of the preceding claims, characterized in that one or more solar cells (11) electrically connected to the accumulator are provided. Mast arrangement according to one of the preceding claims, characterized in that an overload cutoff for the electric motor (34) is provided. Parasol system (1) with a mast arrangement (2) according to one of the preceding claims. Sunshade system according to claim 14, characterized in that on the mast assembly (2) a storage table (10) is arranged.

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