EP3738462A1 - Free arm stunding umbrella, especially for protection against sun and rain - Google Patents

Abstract

A free-arm standing umbrella has a mast (1) on which a boom (2) can be extended and retracted with its mast-side end (2.1) via a mast slide (4) and through a support element (3) between the boom and mast is held, while the end of the boom (2.3) facing away from the mast carries an umbrella part (5) with a crown (5.1), the umbrella part (5) radiating to the crown (5.1) articulated main struts (5.2) and associated, on a respective main strut and a screen slide (5.5) hinged support struts (5.3). The umbrella part (5) is connected to a drive unit (6) on the mast (1) via actuators, a first actuator (6.5) being connected to the mast slide (4) via first pulleys in order to open it via a first functional section (4.1) and off to move, and wherein a second actuating member (7) is coupled to the first actuating member (6.5) via an operative connection (6.8) and is connected to the screen slide (5.5) via second pulleys in order to control it via a second functional section (5.7) To improve usability and stability, it is proposed that the second actuating element (7) be equipped with a transmission unit (8) such that the first functional section (4.1) and the second functional section (5.7) have different lengths.

Description

Technical area

The invention relates to a free-arm standing umbrella, in particular for sun and rain protection, according to the preamble of claim 1.

State of the art

A free-arm standing umbrella of this type is known from EP 0 741 531 B1 . This umbrella has a functional technology for the simultaneous extension and retraction of the boom while opening or closing the umbrella part. As in Figure 3 shown provides a first actuator 84 to the guide carriage 72 to which the boom 10 is pivotally connected while the second actuator 26 is coupled to the organ 84 and is guided along the mast 6 via connecting strut 18 and boom 10 to the slide (rosette) 42, which through Raising or lowering via actuating member 26 spans or closes the umbrella part. Guide carriage 72 and slide 42 perform identical routes. Another revelation shows EP 1 250 065 : An umbrella after Figs. 2 and 3 , with actuator 20 for the extension and retraction of the boom 6 which runs along the mast to the mast slide 8 with a cable 30 is attached to the mast foot and is coupled to the actuator 20 via a pulley in the mast slide and runs through the boom to the slide . Here, too, the effect is an identical distance of the functional path. The extension and retraction of the boom and the opening or closing of the umbrella part are carried out simultaneously. US 6,321,763 Ma Joen Shen disclosed in Fig. 8 a free-arm standing umbrella with simultaneous extension of the boom via a first actuator 25 to the mast slide 14 and simultaneous opening of the umbrella by a second actuator 26 with fixed point 29 on the mast and coupled via roller 30 and further guided to the umbrella slide 21. The drive 16 consists of a primary drive wheel 44 which on the one hand drives the cable reel 45 for lifting the mast carriage 14 and on the other hand the cable reel 46 for lowering the mast carriage 14. For the Nothing is disclosed to compensate for the windings of the rope when winding and unwinding in opposite directions. The stroke lengths of the two actuators 25 and 26 are identical.

Disadvantages of the state of the art are in particular: the risk of collision of the roof struts with the table surfaces when opening and closing large umbrellas due to a closing height that is too low, especially in the case of non-circular roof shapes, a large amount of force required for operation and insufficient wind stability due to too short Supports of the roof struts.

Presentation of the invention

The object of the invention is therefore to propose a free-arm free-standing umbrella of the type mentioned, which is able to overcome the weak points of the prior art that have been identified.

The object of the invention is achieved by a free-arm standing umbrella according to claim 1.

In the free-arm standing umbrella according to the invention, the umbrella part is connected to a drive unit on the mast via actuating elements, a first actuating element being connected to the mast slide via first deflection rollers in order to move it over a first functional section. A second actuating element is coupled to the first actuating element via an operative connection and connected to the screen slide via second pulleys in order to move the latter over a second functional path. The fact that the second actuating element is equipped with a transmission unit in such a way that the first functional path and the second functional path are different results in the following advantages in particular.

By raising the starting position of the closed part of the umbrella including the extension arm and roof covering, the height difference of the Center of gravity between the closed and the open umbrella reduced. This has the effect of saving energy when operating the umbrella and prevents the risk of collision between the ends of the roof struts and the tables below. In order to enable the necessary stroke distance of the slide for broad support of the roof struts, the umbrella according to the invention has a transmission unit for extending the functional path of the umbrella slide.

Advantageous configurations are defined in the dependent claims.

There are basically different forms of implementation for the translation unit. In one embodiment (claim 2) the translation unit is built as a pulley. In this way, a transmission ratio determined by the number of roller pairs acting in the pulley system and thus the ratio between the first and second functional sections can be set up. In further embodiments, the translation unit is built as a mechanical gear. In particular, it can be designed as a toothed gear (claim 3) or as a two-stage cable reel (claim 4). In principle, the translation unit can be integrated into the second actuating member at any advantageous point.

There are also different embodiments for guiding the second actuating member. According to one embodiment (claim 5), the second actuating member is guided by the operative connection along the mast, support element and boom to the slide. In a further embodiment (claim 6), the second actuating member is guided from a fixing point on the mast via a deflection roller on the mast slide along from the boom to the umbrella slide.

According to one embodiment of the drive unit (claim 7) it is designed as a gear with two cable reels, a first cable reel for lifting the mast carriage and a second cable reel are provided for lowering the mast carriage.

In a further embodiment (claim 8), the first actuating member comprises a counter-pull rope for lowering the mast slide. Advantageously (claim 9) there is a tension spring for stretching the counter-pull rope and for compensating for winding differences.

The elements mentioned above, as well as the claimed and described in the following exemplary embodiments, to be used according to the invention are not subject to any special exceptional conditions in terms of their size, shape, material use and technical conception, so that the selection criteria known in the respective field of application can be applied without restriction.

Brief description of the drawings

Fig. 1

eine erste Ausführungsform eines Freiarm-Standschirms in geöffnetem Zustand und ausgefahrenem Ausleger, als Gesamtansicht, in einer Schnittdarstellung;

Fig. 2

eine Detailansicht des Mastes von Fig. 1 mit Antriebseinheit, in einer Schnittdarstellung;

Fig. 3

eine Detailansicht des Mastschlittens von Fig. 1, in einer Schnittdarstellung;

Fig. 4

eine Detailansicht des Auslegers mit Schirmteil von Fig. 1, in einer Schnittdarstellung;

Fig. 5

eine Gesamtansicht des Freiarm-Standschirms von Fig. 1, in geschlossenem Zustand und eingefahrenem Ausleger, in einer Schnittdarstellung, einschliesslich einer Darstellung der ersten und zweiten Funktionsstrecken;

Fig. 6

eine Detailansicht des Mastschlittens von Fig. 5, in einer Schnittdarstellung;

Fig. 7

eine zweite Ausführungsform eines Freiarm-Standschirms in geöffnetem Zustand und ausgefahrenem Ausleger, als Gesamtansicht, in einer Schnittdarstellung; und

Fig. 8

eine Detailansicht einer mechanischen Übersetzungseinheit des Freiarm-Standschirms der Fig. 7, in einer vertikalen Schnittdarstellung (a) sowie in einer horizontalen Schnittdarstellung (b).

Further details, advantages and features of the subject matter of the present invention emerge from the following description of the accompanying drawings, in which the free-arm free-standing umbrella according to the invention is explained using examples. In the drawings shows:

Fig. 1

a first embodiment of a cantilever umbrella in the open state and extended boom, as an overall view, in a sectional view;

Fig. 2

a detailed view of the mast of Fig. 1 with drive unit, in a sectional view;

Fig. 3

a detailed view of the mast slide from Fig. 1 , in a sectional view;

Fig. 4

a detailed view of the boom with umbrella part from Fig. 1 , in a sectional view;

Fig. 5

an overall view of the free-arm stand umbrella from Fig. 1 , in the closed state and retracted boom, in a sectional view, including a representation of the first and second functional sections;

Fig. 6

a detailed view of the mast slide from Fig. 5 , in a sectional view;

Fig. 7

a second embodiment of a cantilever umbrella in the open state and extended boom, as an overall view, in a sectional view; and

Fig. 8

a detailed view of a mechanical translation unit of the free-arm standing umbrella of Fig. 7 , in a vertical sectional view (a) and in a horizontal sectional view (b).

Ways of Carrying Out the Invention

As can be seen from the figures, the free-arm standing umbrella comprises a standing mast 1 with a boom 2, which is guided with its mast-side end 2.1 over a height-adjustable mast carriage 4 and by a pivotable support element 3 from the mast 1 to the boom 2 in position holds. The mast slide 4 can be moved up and down via a first functional section 4.1. At its end 2.3 facing away from the mast 1, the boom 2 carries an umbrella part 5, on the crown 5.1 of which the radial main struts 5.2 and support struts 5.3 with the height-adjustable umbrella slide 5.5 carry the canopy 5.8 made of a flexible sheet material.

For extending or retracting the boom 2 and opening or closing the umbrella part 5, an advantageously self-locking drive unit 6 with a hand crank 6.1 and / or a motor drive is installed in the mast 1. Depending on requirements, the drive unit 6 can be equipped with a gear unit 6.3 that increases or decreases in speed. A closed rotating toothed belt 6.6 or a pull rope 6.7 is used as the first actuating element 6.5 for the mast slide 4. If the circulating element is not closed, a counter-pull rope 6.9 can be used for the mast slide 4.

For the simultaneous actuation of the screen slide 5.5 to open and close the screen part 5, a second actuating element 7, for example a cable pull, is coupled directly or indirectly to the first operating element 6.5 at an operative connection 6.8. The screen slide is thereby displaceable over a second functional section 5.7.

In a first embodiment according to the Figs. 1 to 6 the second actuating member 7 is fixed with its one end 7.1 below the slide 4 on the mast 1 and guided into the boom 2 via a deflection roller 7.2 on the mast slide 4. In order to achieve the necessary lifting height of the slide 5.5 for a wide support of the roof struts 5.2 of the umbrella part 5, the second actuating element 7 is equipped with a transmission unit 8, for example with a pulley block 8.1. For this purpose, a pulley pulley 8.2 is attached to the cable 7, over which the pulley rope 8.3 is guided, which on the one hand is attached to the boom end 2.3 at a fixing point 8.4 and on the other hand carries the screen slide 5.5 via the pulley 5.6.

The translation unit 8 is equipped in such a way that the first functional section 4.1 and the second functional section 5.7 have different lengths.

In a second embodiment according to the Fig. 7 and 8th is the second actuator 7 with the translation unit 8 inside the mast on the Operational connection 6.8 coupled to the first actuating element 6.5 and connected via pulleys from the mast 1 via the boom support element 3 and in the boom 2 with the pulley roller 8.2 of the translation unit 8, which has a greater stroke for the umbrella slide 5.5 than for the mast slide 4 causes.

Fig. 8 shows a variant in which the transmission unit 8 is designed as a mechanical transmission with a double cable reel with different diameters. The drive cable reel 8.6 is anchored with its axis 8.5 in the boom 2 and is firmly connected to the end 7.3 of the cable 7 remote from the mast. The output cable reel 8.7 has a larger diameter and is fixedly connected to the screen slide cable 8.8. This results in a different stroke distance for the screen slide than that of the mast slide 4. Alternatively, in an embodiment not shown, the transmission unit can be designed as a gear with toothing, which enables more specific gradations of the different stroke distances.

Reference list

1

mast

2

boom

2.1

end of the boom on the mast side

2.3

end of the boom facing away from the mast

3

Support element between boom and mast

4th

Mast slide

4.1

First functional section for mast sled

5

Umbrella part

5.1

Crown

5.2

Main striving

5.3

Support struts

5.5

Screen slide

5.6

Deflection pulley at Krone 5.1

5.7

Second functional range for screen slide

5.8

Canopy area

6

Drive unit

6.1

Hand crank

6.3

Reduction gear

6.5

first operating organ

6.6

circumferential toothed belt

6.7

Pull rope to the mast slide

6.8

Coupling point of the actuators (operative connection)

6.9

Counter-pull rope

6.10

Tension spring to counter-pull rope

7th

second actuator, cable

7.1

Cable end on mast side

7.2

Deflection roller on the mast slide 4

7.3

End of cable pull remote from mast 7

8th

Translation unit

8.1

Pulley

8.2

Pulley pulley

8.3

Pulley rope

8.4

Fixing point of the pulley rope end

8.5

Axis of drive cable reel

8.6

Drive rope reel

8.7

Output cable reel

8.8

Umbrella slide rope

Claims (9)

Free-arm standing umbrella with a mast (1) on which a boom (2) can be extended and retracted with its mast-side end (2.1) via a mast slide (4) and is held between the boom and mast by a support element (3) is, while the end of the boom (2.3) facing away from the mast carries a screen part (5) with a crown (5.1), the screen part (5) radiating to the crown (5.1) articulated main struts (5.2) and associated, on a respective main strut and comprises support struts (5.3) hinged to a screen slide (5.5), the screen part (5) being connected to a drive unit (6) on the mast (1) via actuators, a first actuating member (6.5) being connected to the mast slide (4) via first pulleys is connected to move it up and down over a first functional section (4.1), and wherein a second actuating member (7) is coupled to the first actuating member (6.5) via an operative connection (6.8) and via second pulleys to the umbrella slide r (5.5) is connected to move it over a second functional path (5.7),
characterized,
that the second actuating element (7) is equipped with a translation unit (8) such that the first functional section (4.1) and the second functional section (5.7) have different lengths. Free-arm standing umbrella according to Claim 1, characterized in that the translation unit (8) is constructed as a pulley block (8.1). Free-arm standing umbrella according to Claim 1, characterized in that the transmission unit (8) is constructed as a toothed gear. Free-arm standing umbrella according to Claim 1, characterized in that the translation unit (8) is constructed as a two-stage cable reel. Cantilever umbrella according to one of Claims 1 to 4, characterized in that the second actuating element (7) is guided by the operative connection (6.8) along the mast (1), support element (3) and arm (2) to the slide (5.5) . Free-arm standing umbrella according to one of claims 1 to 4, characterized in that the second actuating member (7) from a fixing point (7.1) on the mast (1) via a pulley (7.2) on the mast slide (4) along from the boom (2) to Screen slide (5.5) is guided. Free-arm standing umbrella according to one of claims 1 to 6, characterized in that the drive unit (6) is designed as a gear with two cables, of which a first cable reel (6.5) for lifting the mast carriage (4) and a second cable reel (6.6) for Lowering of the mast slide (4) are provided. Free-arm standing umbrella according to one of Claims 1 to 7, characterized in that the first actuating element comprises a counter-pull rope (6.9) for lowering the mast slide. Free-arm standing umbrella according to Claim 8, characterized in that a tension spring (6.10) is provided for stretching the counter-pull rope (6.9).

Images