DE202019102767U1 - Free-arm standing umbrella, especially for protection from the sun and rain - Google Patents

Abstract

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 in order to move it over a second functional path (5.7), characterized in that the second actuating element (7) is equipped with a translation unit (8) such that the first functional path (4.1) and the second functional path (5.7) have different lengths.

Description

Technical area

The invention relates to a free-arm standing umbrella, in particular for protection from the sun and rain, 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 3 shown provides a first actuator 84 to the guide carriage 72 on which the boom 10 is pivotally connected while the second actuator 26th with the organ 84 is coupled and along by mast 6th via connecting strut 18th and boom 10 to the slide (rosette) 42 is performed, which by raising or lowering the actuator 26th the screen part opens or closes. Guide carriage 72 and slide 42 perform identical routes. Another revelation shows EP 1 250 065 : An umbrella after 2 and 3 , with actuator 20th for extending and retracting the boom 6th which along the mast to the mast slide 8th runs with a cable 30th is attached to the mast foot and via a pulley in the mast slide with actuator 20th is coupled 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 8th a free-arm standing umbrella with simultaneous extension of the boom via a first actuator 25th to the mast slide 14th and simultaneous opening of the screen by a second actuator 26th with fixed point 29 on the mast and coupled via pulley 30th and on to the umbrella slide 21st . The drive 16 consists of a primary drive wheel 44 which on the one hand the rope reel 45 for lifting the mast slide 14th and on the other hand rope reel 46 for lowering the mast slide 14th drives. Nothing is disclosed for balancing the cable windings when winding and unwinding in opposite directions. The stroke lengths of the two actuators 25th and 26th 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 deflection rollers in order to move it 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 in the center of gravity between the closed and the open umbrella is 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 translation unit for extending the functional path of the umbrella slide.

Advantageous configurations are defined in the dependent claims.

There are basically different ways of realizing 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 block and thus the ratio between the first and second functional sections can be established. 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 element is guided from a fixing point on the mast via a pulley on the mast slide along from the boom to the umbrella slide.

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

Figure list

• 1 eine erste Ausführungsform eines Freiarm-Standschirms in geöffnetem Zustand und ausgefahrenem Ausleger, als Gesamtansicht, in einer Schnittdarstellung;
• 2 eine Detailansicht des Mastes von 1 mit Antriebseinheit, in einer Schnittdarstellung;
• 3 eine Detailansicht des Mastschlittens von 1, in einer Schnittdarstellung;
• 4 eine Detailansicht des Auslegers mit Schirmteil von 1, in einer Schnittdarstellung;
• 5 eine Gesamtansicht des Freiarm-Standschirms von 1, in geschlossenem Zustand und eingefahrenem Ausleger, in einer Schnittdarstellung, einschliesslich einer Darstellung der ersten und zweiten Funktionsstrecken;
• 6 eine Detailansicht des Mastschlittens von 5, in einer Schnittdarstellung;
• 7 eine zweite Ausführungsform eines Freiarm-Standschirms in geöffnetem Zustand und ausgefahrenem Ausleger, als Gesamtansicht, in einer Schnittdarstellung; und
• 8 eine Detailansicht einer mechanischen Übersetzungseinheit des Freiarm-Standschirms der 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:

• 1 a first embodiment of a cantilever umbrella in the open state and extended boom, as an overall view, in a sectional view;
• 2 a detailed view of the mast of 1 with drive unit, in a sectional view;
• 3 a detailed view of the mast slide from 1 , in a sectional view;
• 4th a detailed view of the boom with umbrella part from 1 , in a sectional view;
• 5 an overall view of the free-arm stand umbrella from 1 , in the closed state and retracted boom, in a sectional view, including a representation of the first and second functional sections;
• 6th a detailed view of the mast slide from 5 , in a sectional view;
• 7th a second embodiment of a cantilever umbrella in the open state and extended boom, as an overall view, in a sectional view; and
• 8th a detailed view of a mechanical translation unit of the free-arm standing umbrella of 7th , 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 , the one with its mast-side end 2.1 via a height-adjustable mast slide 4th is guided and thereby by a pivotable support element 3 from the mast 1 to the boom 2 holds it in position. The mast sled 4th is over a first functional stretch 4.1 up and down. The boom 2 carries on his from the mast 1 remote end 2.3 an umbrella part 5 , at its crown 5.1 the radial main struts 5.2 and support struts 5.3 with the height-adjustable umbrella slide 5.5 the canopy 5.8 Wear from a flexible sheet material.

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

For simultaneous operation of the screen slide 5.5 for opening and closing the umbrella part 5 is a second actuator 7th , for example a cable pull, directly or indirectly with the first control element 6.5 on an operative connection 6.8 coupled. The screen slide is thus over a second functional section 5.7 movable.

In a first embodiment according to the 1 to 6th is the second actuator 7th with its one end 7.1 underneath the slide 4th on the mast 1 fixed and over a pulley 7.2 on the mast slide 4th in the boom 2 led into it. To the necessary lifting height of the slide 5.5 for a wide support of the roof struts 5.2 of the screen part 5 the second actuator can be reached 7th with a translation unit 8th , e.g. with a Pulley 8.1 , fitted. There is also a pulley block 8.2 on the cable 7th attached over which the pulley rope 8.3 is performed, which on the one hand at the boom end 2.3 at a fixation point 8.4 is attached and over the pulley 5.6 on the other hand the screen slide 5.5 wearing.

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

In a second embodiment according to the 7th and 8th is the second actuator 7th with the translation unit 8th inside the mast at the operative connection 6.8 with the first actuator 6.5 coupled and via pulleys from the mast 1 via the boom support element 3 and in the boom 2 with the pulley pulley 8.2 the translation unit 8th connected, which for the screen slide 5.5 a larger stroke than for the mast slide 4th causes.

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

List of reference symbols

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

6th

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 4th

7.3

far end of the cable 7th

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

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 0741531 B1 [0002]
• EP 1250065 [0002]

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 in order to move it over a second functional path (5.7), characterized in that the second actuating element (7) is equipped with a translation unit (8) such that the first functional path (4.1) and the second functional path (5.7) have different lengths. Free-arm standing umbrella after Claim 1 , characterized in that the translation unit (8) is built as a pulley block (8.1). Free-arm standing umbrella after Claim 1 , characterized in that the translation unit (8) is built as a toothed gear. Free-arm standing umbrella after Claim 1 , characterized in that the translation unit (8) is built as a two-stage cable reel. Free-arm standing umbrella according to one of the Claims 1 to 4th , characterized in that the second actuating member (7) is guided by the operative connection (6.8) along the mast (1), support element (3) and boom (2) to the slide (5.5). Free-arm standing umbrella according to one of the Claims 1 to 4th , characterized in that the second actuating member (7) is guided 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 the umbrella slide (5.5). Free-arm standing umbrella according to one of the Claims 1 to 6th , characterized in that the drive unit (6) is designed as a transmission 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 the mast carriage (4) are provided. Free-arm standing umbrella according to one of the Claims 1 to 7th , characterized in that the first actuating member comprises a counter-pull rope (6.9) for lowering the mast slide. Free-arm standing umbrella after Claim 8 , characterized in that a tension spring (6.10) for stretching the counter-pull rope (6.9) is present.

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