EP0742688B1 - Shade, especially stand-up shade - Google Patents

Abstract

PCT No. PCT/DE95/01537 Sec. 371 Date Jul. 8, 1996 Sec. 102(e) Date Jul. 8, 1996 PCT Filed Nov. 7, 1995 PCT Pub. No. WO96/14773 PCT Pub. Date May 23, 1996In an umbrella, particularly a standing umbrella, sunshade, garden umbrella or similar, with a frame, a roof structure and a canopy, where the roof rods (5) are linked to a pole element (2) bearing a cap (3) and moveable in a telescopic manner relative to the vertical pipe (1), and a slide (4), on which stretchers (6) linked to the roof rods (5) act flexibly, is moveable along the vertical pipe (1), the cap (3) and the slide (4) moving in opposite directions during opening and closing of the umbrella, and with at least one additional stretcher (8) arranged flexibly above the slide (4) between the umbrella pipe (1) and a roof rod (5), the slide (4) being fitted with a locking device (12) with which it can be locked in its upper position and the canopy can be tensioned, it is envisaged that the locking device (12) works in conjunction with a retaining device (13) located on the cap (3) or the moveable pole element (2) to enable simple manual opening of the umbrella and stretching of the canopy, particularly for umbrellas with large diameters.

Description

The invention relates to a screen, in particular a standing screen, Parasol, garden umbrella and the like, with a frame, a roof structure and a canopy with the roof poles on a telescopically displaceable to the standpipe, a crown-bearing stick part are articulated and lengthways of the standpipe is a runner on which the Attack articulated roof struts articulated, whereby Crown and runners themselves when opening and closing the umbrella in opposite directions, move, and at least one above the runner articulated between the standpipe and a roof pole Auxiliary strut, the runner with a locking device is provided with this in its upper position can be locked and the canopy can be tensioned.

A screen of this type is known from DE-A-41 06 147. Of the the screen described in this publication is designed that the canopy by manual operation of the rotor and the locking device without drive itself from one weak person easily opened and sufficient for making Storm security can be tensioned. Doing so the storm safety is particularly important, as the screen at serve as protection in all weather conditions and a closure when suddenly emerging stronger winds often not desired or also is not immediately possible. Is the canopy, i.e. H. the roof membrane, insufficient tension, this leads to wind to turbulence on the top and bottom of the screen membrane. This creates a fluttering movement on the umbrella rod exercises unpredictable and uncontrollable forces. Due to these forces, the location of the Change the pivot points of the umbrella rod to each other so that the umbrella roof becomes unstable or even unstable overall. Around damage or even destruction of the canopy Avoiding strong wind or storm is a well-defined one and constant tension of the roof membrane required.

For this purpose, a locking device is used in the above-mentioned DE-A-41 06 147 suggested that with one on the umbrella stick attached bracket interacts. Opening the umbrella can then be carried out by a person so that this first pull the outer edge of the roof towards you and the umbrella thus partially opens. Because crown and runners run in opposite directions move and thus approximately the center of gravity of the roof construction The roof structure remains at the same height in the event of interruption or termination of manual force stand. Therefore, with the roof pulled apart sufficiently the edge of which has now been released and that along the standpipe sliding runners can be gripped. Pushing up the Runner that can be done in an equally simple manner can lead to a large opening of the screen, in which there is finally the one for tensioning the roof membrane required effort is not noticeable accomplished manually by pushing the runner further up can be. Remains in this largely open position the roof construction also when you let go of the runner stand, so that now, again manually, the locking device can be operated with which the runner in his the upper layer can be locked and the roof membrane can be tensioned. The locking device preferably has one Clamping lever lock on with one at the lower end of the Holding arms arranged abutment works together. The runner can be done with the required very little effort along the standpipe so far up that the Tension spring clip of the tension lever lock in the abutment latch and tension by turning the hand lever.

With the help of the construction known from DE-A-41 06 147 the locking device can be a simple manual Tension the roof membrane to produce a sufficient Storm safety for stand-up umbrellas up to an umbrella diameter of about 4 m. This affects Disadvantages identified with these screens, described below is not so strong that the one with the known Construction aimed at wind stability in turn impaired becomes.

As has been found, the amount from the DE-A-41 06 147 known umbrella games in the joints and Store the roof structure for a rest of wind instability at. In addition, one leads after tensioning the roof membrane remaining residual elasticity of the membrane to a decrease the tension as a function of time. This residual elasticity the higher the screen diameter. Considered one that the area of a screen with a diameter of 5 m is already over 50% larger than that of a 4 m screen Diameter, so you can see that with larger paragliders yielding of the membrane counteracting the wind stability target due to its residual elasticity, it quickly becomes considerable Takes on size.

Furthermore, is the case with umbrellas with a larger roof diameter The focus of the overall construction is relatively high on the stand area level arranged, which is also the stability and Stability of the screen affected. Is the umbrella one When exposed to snow, the focus is still shifting further up, so that the problem of sufficient tipping safety and column kink resistance, especially with strong ones Wind is intensified.

The present invention is therefore based on the object to develop a screen of the type mentioned in such a way that its wind stability and stability is improved. The object is achieved in that at one Screen of the type mentioned with the locking device one arranged on the crown or the sliding stick part Holding device cooperates.

With the inventive design of the locking device not only is the runner locked in its upper position and thereby the umbrella roof stretched, but over it the crown is fixed in its vertical position. Surprisingly it has been shown that this measure which is particularly evident in the case of larger stand screens Impairment of the desired high stability of the Screen is avoided.

It has been found that the said adverse effect is significant is caused by the fact that the crown is due to the reaction force of the opposite movement of the crown and Runners strive to move upwards when stretching the glider. This actually happens with the known umbrella to a certain extent what the games in the joints do and storing the roof structure and giving in manifold tension members of the tensile structure, d. H. essentially the roof membrane. According to the DE-A-41 06 147 constructed umbrella with a diameter of An emigration of the crown of about 3 cm was measured 5 m. Such an amount is already given the high stability requirement on such a screen is no longer acceptable. Due to the construction according to the invention, a crown migration occurs completely prevented after tensioning the screen and thus the disadvantages found in the known screen Avoided especially for larger diameters.

The screen according to the invention has all in DE-A-41 06 147 described advantages of the umbrella known from it. In order to avoid repetition, this document is used referred.

The holding device can be on the crown or the displaceable Have stick part attached bracket, with the the locking device cooperates.

The locking device can be in a manner known per se Clamping lever lock and be arranged on the holding device Abutment and one engaging with the abutment Have clamping element.

Furthermore, the runner is preferred to facilitate handling for the opening and closing process of the screen with a trained as a tube and opposite to Provide canopy-running approach on which the tensioning element of the clamping lever lock is attached. This can the runner touched the bottom when opening the screen and the locking of the one in the upper position Runner about the chest level of the operator.

The rotor expediently has a bore, an open one Slot or the like through which the holding arm is passed is.

For precise adjustment of the end position of the runner and tension the length of the umbrella arm is preferred fine adjustable.

For larger stand umbrellas with a diameter of 4 m or more, the Tension the roof membrane using the locking device required force so high that z. B. without disproportionate Extension of the clamping lever the locking device can no longer be operated manually. It has but surprisingly shown that even with umbrellas with a diameter of more than 5 m, effortless manual opening of the glider without auxiliary drives is possible if you additionally to the construction according to the invention from the DE-A-41 06 147 known locking device as a second Locking device with a second, on the standpipe arranged holding device cooperates, provides. The Tensioning the canopy then comprises two tension levels: Example is first with the second locking device the runner is placed in a position where one is manually the canopy can be easily pre-tensioned and the runner is locked with the second locking device can be. Then the locking device according to the invention operated, through the one facing the runner Force was exerted on the crown and this finally upon reaching a precisely defined and largely timed constant roof tension is locked. It turned out that even this power effortlessly, even from a weak one Person can be applied. The advantages of a simple one manual opening and tensioning of the canopy with high stability even in strong winds in this way also with larger stand screens.

To close, the reverse is first the invention Locking device relaxes and unlocks, whereupon you then relax the second locking device and can unlock. The advantages described are special striking if you take into account that in one examined Umbrella with a diameter of 5 m the static Voltage potential of the open screen at almost 300 kp lies.

The second locking device can, as in the DE-A-41 06 147 described, also a cocking lever lock be a fixed abutment and one with the Abutment engaging clamping element. The Clamping element can be attached to the rotor designed as a tube a point that the clamping element of the locking device according to the invention opposite, be appropriate.

The wind stability and stability of the open umbrella can be further improved in that the lower end of the movable stick part compared to conventional umbrellas the type mentioned is extended, so that the Center of gravity of the overall screen much lower in relation comes to stand level. Based on these Measure will be the safety against tipping and the column kink resistance the glider especially in strong winds and heavy snow loads significantly improved.

It has been found that the extension of the Weight increase associated with the stick to balance the weight ratios of the moving parts of the umbrella and friction can be used so that when the runner is released the runner stops during the opening of the screen or moves slowly so that the screen is as above described with reference to DE-A-41 06 147, initially slightly by pulling the outer edge of the roof outwards partially opened and then the runner lightly gripped and can be pushed up along the standpipe. Here should be the force required to move the rotor 15 kp, preferably for large umbrellas with a diameter from 6 m 8 kp, correspondingly less for smaller umbrellas, do not exceed. So far, this balancing has been made that the length of the support struts and the location of the The articulation points of the support struts on the roof poles are chosen in this way was that the focus of the Roof construction remains at least approximately at the same height. With a series covering several umbrella sizes, for each screen size uses appropriately dimensioned parts become. The aforementioned development of the invention enables about improving stability and wind stability in addition, largely balancing the weights while maintaining them same components for umbrellas of different sizes.

In most cases, the weights are optimally balanced the movable components and the friction the aforementioned Measure to combine with that in addition a suitably dimensioned lower area of the movable stick part Counterweight is arranged. With this combination the extension of the movable part of the stick by one dimensioned length and attachment of a precisely dimensioned counterweight it is possible to have all standard sizes Series with a minimum number of different dimensions Balance components so that when you release the Runner at least while opening the screen of the runner almost stops. The counterweight leads to another Lowering the center of gravity of the overall screen and wearing hence to wind stability and stability.

In a preferred embodiment, the counterweight is in the lower open end of the movable stick part can be inserted and can be locked in the inserted position.

Fig. 1

einen Schirm in geöffneter Stellung,

Fig. 2

den in Fig. 1 dargestellten Schirm in geschlossener Stellung,

Fig. 3

Einzelheiten des Schirmstockes mit Verriegelungsvorrichtung in größerem Maßstab schematisch,

Fig. 4

einen zweiten Schirm in geöffneter Stellung,

Fig. 5

den in Fig. 4 dargestellten Schirm in geschlossener Stellung,

Fig. 6

Einzelheiten des in Fig. 4 dargestellten Schirms in größerem Maßstab schematisch,

Fig. 7

drei unterschiedliche Längen des bewegbaren Stockteils mit darin angeordneten Kontergewichten,

Fig. 8

einen Längsschnitt durch das untere Ende des beweglichen Stockteils und

Fig. 9

einen Querschnitt längs der Linie IX-IX mit eingesetztem Spannstift.

Two embodiments of the invention are explained below with reference to the drawing. Show:

Fig. 1

an umbrella in the open position,

Fig. 2

the screen shown in Fig. 1 in the closed position,

Fig. 3

Details of the umbrella stick with locking device on a larger scale schematically,

Fig. 4

a second umbrella in the open position,

Fig. 5

4 in the closed position,

Fig. 6

Details of the screen shown in Fig. 4 schematically on a larger scale,

Fig. 7

three different lengths of the movable stick part with counterweights arranged therein,

Fig. 8

a longitudinal section through the lower end of the movable stick part and

Fig. 9

a cross-section along the line IX-IX with inserted spring pin.

The screen shown in FIGS. 1 and 4 has a standpipe 1, in which a stick part 2 is telescopically mounted is. The stick part 2 is provided with a crown 3 on the the roof rods 5 are articulated. A runner 4 is along the rigid standpipe 1 slidably mounted. Between the Runner 4 and the roof bars 5 are articulated on both sides Support struts. The articulation points on the roof poles are designated with 7.

There are also auxiliary struts 8, all around in even distribution, but at least two in opposite Arrangement. The auxiliary struts 8 are on the one hand at 9 on the umbrella stick 1 and on the other hand at 10 on the roof poles 5 hinged.

The rotor 4 is with a running to the lower floor end tubular approach 4a provided to facilitate the Handling for the displacement of the rotor 4 is used. To the tubular extension 4a is a cocking lever lock 12. This works together with an abutment 11, which is is located at the lower end of a rigid support arm 13 which is fixed is attached to the crown 3 at 15. At 14, the canopy is or the umbrella cover.

Crown 3 moves when the umbrella is closed or opened and runners 4 inevitably move towards or away from each other from each other. The inevitable opposite of crown 3 and Runner 4 is due to the frame construction and here diametrically arranged auxiliary struts 8, which fixed at 9 are articulated on the standpipe 1 and at 10 on the roof poles attack. When closing, the runner 4 with the pipe socket 4a pulled down, whereupon the auxiliary struts 8 the Move support struts 6 towards the umbrella stick. Thereby the stick part 2 with the crown 3 is moved upwards, what a laying of the roof poles on the standpipe 1 for Consequence. The rotor 4 with the pipe socket serving as a handle 4a is initially with the screen closed up to almost complete opening of the screen with very little Force pushed up. As soon as and when moving up of the rotor 4, 4a a first change in hand resistance is noticeable (beginning of the actual roof tension phase), the deflectable tension spring clip 16 of the tension lever lock can be 12 latch into the abutment 11, namely by means of the clamping lever 17. This is the tendency of Runner 4, 4a, after releasing his elongated, as a handle approach 4a down again drive, stopped. Then the hand lever 17 of the clamping lever lock 12 overcoming a pressure point down thrown what by hand, e.g. B. performed by the ball of the thumb can be. With this deflection of the clamping lever 17 the force that is required can be generated the remaining lifting distance of the runner 4 and the associated overcome mechanical resistance that occurs when tightening of the canopy.

The length of the holding arm 13 is to be chosen so that when manual Lifting the rotor 4, 4a of the tensioning bracket 16 of the tensioning lever lock 12 at least approximately in that spatial position arrives, in which the clamping bracket 16 effortlessly into the abutment 11 clicks into place at the lower end of the holding arm 13, before there is a higher mechanical one when lifting the runner further Resistance sets as the one during the pure Lifting process of the runner 4, 4a.

The rotor 4 has a bore 18 or an open longitudinal slot through which the holding arm 13 is passed, so that this is practical compared to moving the rotor 4 can slide smoothly.

Instead of the described embodiment, it is also possible to Support arm for the abutment on the sliding stick part 2 above the standpipe 1 or within the standpipe 1 to attach. In the latter case, the movability of the stick part 2 or the runner 4 granted that the Stick part 2 or the runner 4, 4a a vertical slot opening has a corresponding length in its outer wall, through which the holding arm for the abutment 11 engages. The abutment 11 with the holding arm can also become one fuse the part forming the abutment.

In the embodiment shown in the drawing figures is for guiding the holding arm 13 above the rotor 4, 4a a further guide part 19 arranged on the standpipe 1 provided with a bore 20 or an open longitudinal slot, in which the holding arm 13 slide practically without friction can.

The second embodiment shown in FIGS. 4 to 6 concerns a larger screen, for example with a diameter of 5 m, which has a second locking device 21, as is known from DE-A-41 06 147. This is arranged on the rotor 4, 4a at a location that is diametrical opposes the first locking device 12. How the former is designed as a clamping lever lock, the with an abutment 11 cooperates. The abutment 11 is located itself at the lower end of a second rigid holding arm 22, the above the displacement path of the rotor 4 firmly on the standpipe 1, e.g. B. is attached to the guide member 19.

To open this screen, first the runner 4 with the pipe socket 4a serving as a handle to a large extent Opening the screen with little manual effort pushed up. As soon as the first hand resistance change is noticeable (beginning of the roof tension phase), the foldable spring clip 16 of the second locking device 21 latch into the abutment 11, and by means of the hand lever 17. Thereafter, the hand lever 17 the second locking device 21 overcoming a pressure point turned down, which already in this first tensioning stage a considerable preload of the Canopy is generated and at the one on the opposite Side of the rotor 4, 4a arranged locking device 12 of the spring clip 16 by means of the hand lever 17th can be inserted into the abutment 11. The hand lever of the Locking device 12 can be overcome by overcoming Pressure point manually down, which the Crown 3 is pulled down over the rigid support arm 13. Although this displacement of the crown 3 is only a few centimeters is, it leads locally through the first tensioning stage fixed position of the support struts 6 and the auxiliary struts 8 to another curvature of the canopy, which is an increase of the entire roof tension. With this second tension stage eventually becomes a static roof voltage potential generated so far with no other, especially unpowered Shield construction was directly or indirectly accessible.

The runner 4 has a guide for guiding the second holding arm 22 Bore 23 or an open longitudinal slot on a free Sliding the holding arm 22 against the displacement of the rotor 4 permits.

The lowest possible center of gravity of the overall screen compared to the stand area level and thus a particularly good one Tilt resistance and column kink resistance will be achieved the weight ratios of the movable screen parts and the Frictions through a suitable dimensioning of the length of the movable Stock part 2 and introduction of a counterweight 24 into the lower, open end of the stick part 2, as in FIG. 7 is shown using three examples, so balanced that when the rotor 4 is released during the opening of the screen the rotor 4 stops at least approximately. The extension of the stick part 2 with larger screen diameters goes with an increase in the screen height hand in hand. It is only limited by bumping the lower end of the Stick part 2 with open screen against one (in the drawing not shown) in the lower region of the standpipe 1 intended internal reinforcement.

8, the counterweight 24 is in the lower open end of the movable stick part 2 can be pushed in, the lower end then through a plastic slider 25 is closed. The ring-shaped plastic slider 25 stands at the lower end of the stick part 2 radially in front and lies with its outer wall against the inner profile of the standpipe 1 on. The plastic slider extends with an extension 26 25 into the lower end of the stick part 2 and is there fixed by means of radial screws 27 on the stick part 2.

The counterweight 24 is arranged over the shoulder 26 and has one with two opposite openings 28 in the stick part 2 aligned radial through bore 29.

As shown in the cross-sectional view according to FIG. 9, the counterweight 24 through one through the openings 28 and the through hole 29 extending dowel pin 30 fixed.

Reference list

1

Standpipe

2nd

Stick part

3rd

Crown

4th

runner

4a

approach

5

Roof poles

6

Support struts

7

Articulation points

8th

Auxiliary struts

9

Pivot point

10th

Pivot point

11

Abutment

12th

Tension lever lock

13

Holding arm

14

Umbrella roof

15

Fastening point of the holding arm 13 on the crown

16

Spring clip

17th

Tension lever

18th

drilling

19th

Guide part

20th

drilling

21

Locking device

22

Holding arm

23

drilling

24th

Counterweight

25th

Plastic glides

26

approach

27

screw

28

opening

29

Through hole

30th

Spring pin

Claims (10)

1. Umbrella, particularly a standing umbrella, sunshade, garden umbrella or similar, with a frame, a roof structure and a canopy (14) where the roof rods (5) are linked to a pole element (2) bearing a cap (3) and moveable in a telescopic manner relative to the vertical pipe (1) and a slide (4) on which stretchers (6) linked to the roof rods (5) act flexibly, is moveable along the vertical pipe, the cap and the slide moving in opposite directions during opening and closing of the umbrella, and with at least one additional stretcher arranged flexibly above the slide between the umbrella pipe and a roof rod (5), the slide being fitted with a locking device (12,21) with which it can be locked in its upper position and the canopy can be tensioned, characterised in that the looking device (12, 21) works in conjunction with a retaining device located on the cap (3) or moveable pole element (2).
2. Umbrella as per Claim 1, characterised in that the retaining device has a retaining arm (13) fixed to the cap (3) or the moveable pole element (2).
3. Umbrella as per Claim 1 or 2, characterised in that the locking device (12) is a tension lever lock and that the tension lever lock has an abutment (11) located on the retaining device and a tension element (16, 17) which interlocks with the abutment (11).
4. Umbrella as per one of the Claims 1 to 3, characterised in that the slide (4), is fitted with an extension (4a), designed in the form of a tube pointing away from the canopy, to which the tension element (16, 17) of the tension lever lock is attached.
5. Umbrella as per one of the Claims 2 to 4, characterised in that the slide (4) has a drilled hole (18), an open slot or similar, through which the retaining arm (13) is passed.
6. Umbrella as per one of the Claims 2 to 5, characterised in that the length of the retaining arm (13) is finely adjustable.
7. Umbrella as per one of the Claims 1 to 6, characterised by a second locking device (21), which works in conjunction with a second retaining device (22) located on the vertical pipe (1).
8. Umbrella as per one of the Claims 1 to 7, characterised in that the friction and the weight ratios of the moveable components of the umbrella are counterbalanced by lengthening of the lower end of the moveable pole element (2) in such a way that the slide (4) comes to a halt or only moves slowly if released while opening the umbrella.
9. Umbrella as per Claims 1 to 8, characterised in that the friction and the weight ratios of the moveable components of the umbrella are counterbalanced by a counterweight (24) located in the lower region of the moveable pole element (2) in such a way that the slide (4) comes to a halt or only moves slowly if released while opening the umbrella.
10. Umbrella as per Claim 9, characterised in that the counterweight can be pushed into the lower, open end of the moveable pole element and locked in this inserted position.

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