Patent Application
20200397103
The invention relates to a free arm standing parasol, particularly for sun and rain protection.
A free arm standing parasol of this type is known from EP 0 741 531 B1. This parasol comprises a functionality for the simultaneous extension and retraction of the arm while simultaneously opening or closing the umbrella part. As shown in
Disadvantages of the prior art are, in particular: a risk of collision between the canopy struts and the table surfaces during the opening and closing process of large parasols as a result of the closed height being too low, particularly in the case of canopies with non circular shapes, a large power requirement for the actuation and an insufficient wind stability caused by too short supports of the canopy struts.
The object of the invention is thus to propose a free arm standing parasol of the above-mentioned type, which is able to overcome the above identified weaknesses of the prior art.
The object of the invention is achieved by a free arm standing parasol.
In the free arm standing parasol according to the present invention, the parasol part is connected, via actuating organs, to a drive unit at the mast, a first actuating organ being connected to the mast slide via first deflection rollers for moving the mast slide across a first functional distance. A second actuating organ is coupled to the first actuating organ via an action coupling and is connected to the parasol slider via second deflection rollers for moving the parasol slider across a second functional distance. The fact that the second actuating organ is provided with a transmission unit configured in such manner that the first functional distance and the second functional distance are different, leads in particular to the following advantages.
By raising the starting position of the closed parasol part including the arm and the canopy cover, the difference in height of the positions of the center of gravity in the closed and in the open parasol is reduced. This results in an energy saving effect for actuating the parasol and prevents the risk of collision between the ends of the canopy struts and any tables located below. In order to allow for the necessary travel distance of the slider for a broad support of the canopy struts, the parasol according to the present invention comprises a transmission unit for extending the functional path of the parasol slide.
In principle, there are different forms of implementation for the translation unit. In one embodiment, the transmission unit is configured as a pulley. In this manner, a transmission ratio which is determined by the number of roller pairs acting in the pulley and, accordingly, a ratio between the first and second functional distance can be set up. In further embodiments the transmission unit is configured as a mechanical gear. In particular, it can be designed as a toothed gear or as a two-stage cable spool. In principle, the transmission unit can be integrated into the second actuating organ at any advantageous position.
Similarly, there are various embodiments for the guiding path of the second actuating organ. According to one embodiment the second actuating organ is guided from the action coupling along the mast, supporting element and arm to the slider. In a further embodiment the second actuating organ is guided from a fixing point at the mast via a deflection roller at the mast slide along the arm to the parasol slider.
According to one embodiment of the drive unit the latter is configured as a gear with two rope spools, with a first rope spool being provided for lifting the mast slide and a second rope spool being provided for lowering the mast slide.
In a further embodiment the first actuating organ comprises a counterpull rope for lowering the mast slide. Advantageously a tension spring is provided for stretching the counterpull rope.
The aforementioned elements as well as those claimed and described in the following exemplary embodiments, to be used according to the invention, are not subject to any particular conditions by way of exclusion in terms of their size, shape, use of material and technical design, with the result that the selection criteria known in the respective field of application can be used without restrictions.
Further details, advantages and features of the object of the present invention will become apparent from the following description and the corresponding drawings, in which the free arm standing parasol according to the present invention is illustrated by way of example. In the drawings, there is shown, in:
As can be seen from the figures, the free arm standing parasol comprises a standing mast 1 with an arm 2, which is guided with its end of the arm facing towards the mast 2.1 via a height-adjustable mast slide 4 and which is held in position by a pivotable supporting element 3 disposed between the mast 1 and the arm 2. The mast slide 4 can be extended and retracted across a first functional distance 4.1. The arm 2 carries at its end 2.3 facing away from the mast 1 a parasol part 5 having canopy 5.8 made of a flexible flat material, which canopy is carried by main struts 5.2 radially attached to crown 5.1 and by supporting struts 5.3 attached to height-adjustable parasol slider 5.5.
For extending or retracting of the arm 2 and for opening or closing of the umbrella part 5 an advantageously self-locking drive unit 6 with a hand crank 6.1 and/or motor drive is installed into the mast 1. Depending on the requirements, the drive unit 6 is provided with a gear 6.3 stepping-up or stepping-down the driving speed. A closed circulating toothed pulley 6.6 or a pull rope 6.7 serves as the first actuating organ 6.5 for the mast slide 4. If the circulating member is not closed, a counterpull rope 6.9 can be inserted for the mast slide 4.
In order to simultaneously actuate the parasol slider 5.5 for opening and closing the parasol part 5, a second actuating organ 7, for example a rope pull, is directly or indirectly coupled with the first actuating organ 6.5 by way of an action coupling 6.8. As a result, the parasol slider can be moved across a second second functional distance 5.7.
In a first embodiment according to
The transmission unit 8 is configured in such manner that the first functional distance 4.1 and the second functional distance 5.7 have different lengths.
In a second embodiment according to
| Number | Date | Country | Kind |
|---|---|---|---|
| 202019102767.3 | May 2019 | DE | national |
