EP2422641A1 - Foldable support frame for a garden umbrella, parasol or similar - Google Patents

Abstract

The foldable support rod has a covering (2) provided at the lower end of a supporting pole (1). A lower retaining ring is projected outwards, and external ends of a support brace are attached to the support struts (6). The upper and lower guard rings are relatively displaced by the folding and unfolding operations. A bamboo timber support rod is firmly connected at the end portion for mounting at the upper retaining ring comprising an elongated strut (5). An end portion of the lower retaining ring is firmly connected with the support bar and the supporting pole.

Description

The invention relates to a foldable support rods for a garden umbrella, a parasol or the like. with the features of the preamble of claim 1 and an equipped with such a support rods garden umbrella, umbrella or the like.

Garden umbrellas, umbrellas, or the like., So in general large umbrellas, which give shade especially in the garden against the sun and protect against rain, have been known for decades. The term garden umbrella is used below for the genus umbrella screens, which generally have this function.

Each garden umbrella has a foldable support frame, from which the covering of the garden umbrella is carried. In the folded state of the support rod you can easily stow the umbrella, for example, stuck in a tubular casing and put away. In the unfolded state of the support rod, the fabric is stretched and provides the desired protection against sunlight or rain.

The shape of the garden umbrella in top view is different. The most common form is circular or polygonal, such as hexagonal or octagonal. But there are also rectangular or square garden umbrellas with corresponding foldable support rods. Ultimately, it is always only a question of the length of the support struts and the cutting of the covering, which outer Forni in plan view of the garden umbrella has.

The fabric on the foldable support frame of the garden umbrella is regularly made of a fabric that is water repellent equipped. But there are also used in the same way covers made of plastic (films), appropriate tarpaulins or even stringings, which consist of wooden struts or panicles, for example, from Reet. The term "covering" is intended to encompass all of these variants and to refer only to a fabric fabric, preferably and not by way of limitation.

The known foldable support rod for a garden umbrella from which the invention proceeds ( DE 20 2009 004 676 U1 ), has a hollow profile made of plastic or aluminum support mast, the lower, open end in a typical holder, in particular a mast of an umbrella stand, is to be used. The upper end of the hollow support mast faces the fabric. At the upper end of the girder an upper retaining ring is firmly attached. Below the upper retaining ring, a lower retaining ring is arranged, which is mounted on the Tragmeist up and down slidably. Below the lower retaining ring in its lowest position, which corresponds to the folded state of the support rod, there is a crank drive, which is able to move the lower retaining ring up and down via a drive construction in the interior of the support mast. By this upward and downward movement of the displaceable lower retaining ring relative to the upper stationary retaining ring unfolding and folding or folding of the support linkage takes place.

On the upper retaining ring several Tagstreben are pivotally mounted, each with an inner end, which project in the unfolded state of the support rod from the upper retaining ring to the outside, slightly obliquely downward. These are on the circumference of the upper retaining ring i.W. equally distributed. In the local embodiment, there are eight support struts. On this a string is attached. This support struts are designed as aluminum hollow sections and hung at their ends by means of pin connections on the upper retaining ring.

Here, each of the support struts is associated with a corresponding support strut. The support struts are pivotally mounted on the lower retaining ring with an inner end and protrude in the unfolded state of the support rod from the lower retaining ring to the outside, and extending obliquely upward to the associated support struts. In the central region of the support rods they are equipped with metal hinged fittings on which the support struts are in turn mounted with pin connections.

The unfolding and folding or folding of the support rod is done so that the upper and lower retaining ring move relative to each other, so change their distance. As a result, the angular position of the support struts and associated support struts to each other changed, which leads to the spreading or folding of the support struts and thus the fabric.

In the known foldable support rod, from which the invention proceeds, the upper retaining ring, as stated, made fixed. But there are also known constructions in which, for example, the support mast is made telescopic. Then, the lower retaining ring is fixed in height at the lower part of the support pole, while the upper retaining ring at the upper end of the upper part of the support mast moves up and down, thereby causing the relative displacement of the retaining rings is generated.

Also known for decades is of course a classic collapsible and pluggable garden umbrella with a two-piece support pole made of tubular steel ( DE 201007 013 557 U1 ).

Finally, very popular folding support rods for a garden umbrella, umbrella or the like., In which the support pole, the support struts and the support struts made of wood, usually beech wood or Meranti, exist (see, for example DE 20 2005 002 074 U1 ). In wooden supporting rods often also the retaining rings made of wood. They are provided with notches for inserting ends of the support struts or support struts. A known fastening technique shows here a ring on the retaining ring made of wood clamping ring made of steel, which also supports the ends of the support rods or support rods pivotally.

The advantage of folding support rods made of steel or aluminum is their low weight. The constructions are relatively expensive and do not look very warm in the garden or on the terrace. Therefore, many users prefer foldable support poles for garden umbrellas, where the essential parts are made of wood. However, these are more subject to weather and wear.

The invention is based on the problem, a foldable support rods for a garden umbrella, parasol o.dg1. which is constructed in an improved manner using wood as a material.

The previously defined problem is in a foldable support rods for a garden umbrella, parasol o.dg1. with the features of the preamble of claim 1 by the features of the characterizing part of claim 1 solved. Preferred embodiments and further developments are the subject of the subclaims,

The invention is also a complete garden umbrellas, parasol or the like., Which consists of a foldable support rods as described above and one on the support struts of the support rod, preferably at the outer ends, attached clothing.

The essential basic idea of the foldable support rod according to the invention is the use of bamboo wood for at least significant parts of the support rod, in particular for the support struts and / or the support struts and / or the support mast.

Naturally grown bamboo wood is slightly uneven and therefore may not be optimally suited for use as a support pole on which a retaining ring must slide. But it is suitable for the support struts and / or for the support struts. However, it is advisable not to use the bamboo wood directly at the attachment sites, as it splinters easily or tears. Therefore, the support strut and / or the support strut according to the teachings of the invention are divided into an elongated support rod or support rod on the one hand and the end pieces so firmly connected to the attachment ends. The end pieces are made of such materials that are suitable for attachment to the upper retaining ring or the lower retaining ring or on hinge fittings for attaching the support struts to the support struts.

With the teachings of the invention to get to a completely new form of a foldable support rod for a garden umbrella, umbrella or the like.

According to a particularly preferred teaching of the invention it is further provided that the support rod of the support strut and / or the support rod of the support strut and / or the support mast is made of bamboo strips existing, layer-glued composite element. By using processed bamboo wood for the support bars of the support struts and / or the support rods of the support struts and / or for the support pole to get an optimal shaping possibility for the support struts, the support struts and / or the support mast.

The bamboo wood is here executed in each case in the form of a layer-glued composite element. For this purpose, first natural bamboo rods are split lengthwise in bamboo strips. On a corresponding planing machine The resulting raw bamboo strips are directed to a suitable thickness or planed, The unified bamboo strips thus produced are then layer-glued with corresponding glues, especially a two-component epoxy resin. In this specific case, it is a Kaitlaminierverfahren, After the so layered raw composite element is cured, it can be processed with conventional joinery machines such as other plywood.

With the execution of the components of bamboo wood as a layer-glued composite elements to achieve a high-strength, wear-resistant, weather-independent design of a foldable support rod for a garden umbrella, a parasol or the like.

For further background on the processing of bamboo may be referred to the literature, especially on Simon Crouzet and Oliver Colin: Bamboo. Agrarverlag, 2003, ISBN 3-8001-4195-7 and Christian Gahle & Alexandra Brunnert: Bamboo: From a regional building material to a global raw material. Bamboo Journal 3/2008; ISSN 0942-4.679 ,

Fig. 1

in perspektivischer Ansicht schräg von oben ein bevorzugtes Ausführungsbeispiel eines erfindungsgemäßen Gartenschirms mit einem faltbaren Traggestänge,

Fig. 2

das Traggestänge aus Fig. 1 in einer Seitenansicht, die Bespannung lediglich angedeutet,

Fig. 3

in perspektivischer Ansicht eine Tragstange einer Tragstrebe für das faltbare Traggestänge aus Fig. 1,

Fig. 4

in perspektivischer Ansicht eine Stützstange einer Stützstrebe für das faltbare Traggestänge aus Fig. 1,

Fig. 5

in perspektivischer Ansicht einen unteren Haltering für das Traggestänge aus Fig. 1,

Fig. 6

in perspektivischer Ansicht einen oberen Haltering für das Traggestänge aus Fig. 1,

Fig. 5

in einer Ansicht schräg von oben den Mittelbereich des Tragmastes mit dem oberen Haltering eines bevorzugten Ausführungsbeispiels des Traggestänges aus Fig. 1,

Fig. 8

in perspektivischer Ansicht ein erstes Ausführungsbeispiel eines Endstücks,

Fig. 9

in perspektivischer Ansicht ein zweites Ausführungsbeispiel eines Endstücks,

Fig. 10

in perspektivischer Ansicht das Endstück aus Fig. 9 fest angebracht am Ende einer Tragstange,

Fig. 11

die Einheit aus Fig. 10 schwenkbar angebracht am oberen Haltering gemäß Fig. 6,

Fig. 12

in perspektivischer Ansicht, auseinandergenommen, den Mittelbereich der Tragstange einer Tragstrebe sowie den Endbereich einer Stützstrebe mit Endstück vor der Verbindung der beiden.

In the following the invention will now be explained in more detail with reference to a drawing showing only a preferred embodiment. With reference to the drawing, also special aspects and advantages of further embodiments of the invention are shown in the drawing

Fig. 1

in a perspective view obliquely from above a preferred embodiment of a garden umbrella according to the invention with a foldable support rod,

Fig. 2

the support rods off Fig. 1 in a side view, the clothing merely indicated,

Fig. 3

in perspective view of a support rod of a support strut for the foldable support rod Fig. 1 .

Fig. 4

in perspective view of a support rod of a support strut for the foldable support rod Fig. 1 .

Fig. 5

in perspective view of a lower retaining ring for the support rod Fig. 1 .

Fig. 6

in perspective view of an upper retaining ring for the support rod Fig. 1 .

Fig. 5

in a view obliquely from above the central region of the support mast with the upper retaining ring of a preferred embodiment of the support rod Fig. 1 .

Fig. 8

in a perspective view a first embodiment of an end piece,

Fig. 9

in a perspective view a second embodiment of an end piece,

Fig. 10

in perspective view of the tail Fig. 9 firmly attached to the end of a support bar,

Fig. 11

the unit off Fig. 10 pivotally mounted on the upper retaining ring according to Fig. 6 .

Fig. 12

in a perspective view, taken apart, the central region of the support rod of a support strut and the end portion of a support strut with tail before the connection of the two.

Fig. 1 shows a complete garden umbrella as a preferred embodiment of the invention with a support rod with a large, elongated support pole 1 and with a fabric 2 on the support rod.

For the invention, the same alternatives apply to embodiments that have already been explained in the prior art. For the fabric 2, which is shown here as a fabric covering fabric, so there are all possibilities, in particular, the fabric 2 may be a fabric fabric, a knitted fabric, a film, a tarpaulin, or as explained in the prior art of individual ribs or Slats as well as from Reet or the like. be executed.

Fig. 1 and 2 show the support pole 1 with a in a holder, in particular a mast base, to be used lower end and a clothing 2 facing upper end. At the upper end of the support mast 1, an upper retaining ring 3 is arranged, while below a lower retaining ring 4 is arranged on the support mast 1. The illustrated and preferred embodiment shows the upper retaining ring 3 fixed to the upper end of the support mast 1, while the lower retaining ring 4 is slidably mounted on the support mast 1. That does not have to be that way. Alternatives, for example a telescoping support mast 1, or a pluggable support mast 1 with possibly an upper movable retaining ring and egg, nem fixed lower retaining ring, are known from the prior art and described above.

At the upper retaining ring 3 are more with an inner end pivotally mounted thereto, in the in Fig. 1 and 2 shown unfolded state of the support rod from the upper retaining ring 3 outwardly projecting support struts 5, which are distributed uniformly on the circumference of the retaining ring 3 iW and wear the fabric 2 when completing the support linkage with the fabric 2. In addition to the support struts 5 are supporting struts 6, which are pivotally mounted on the lower retaining ring 4 with an inner end and protrude in the unfolded state of the support rod from the lower retaining ring 4 to the outside. The illustrated and preferred embodiment shows the same number of support struts 6 as there are support struts 5, so a support strut 6 associated with a support strut. 5

The protruding outward in the unfolded state does not mean exactly radial projection. The illustrated embodiment shows that both the support struts 5 and the support struts 6 protrude outwards and obliquely downward or obliquely upward from the corresponding retaining ring 3 and 4 respectively.

This in Fig. 1 and 2 illustrated embodiment shows, in any case, that the support struts 6 are arranged corresponding to the support struts 5 and are pivotally mounted with their outer ends to the support struts 5 in the respective central region. As a result, when pushing up the lower, movable retaining ring 4, the support struts 5 are spread apart, controlled by the support struts 6 in the manner of a toggle lever drive. The unfolding and folding the support linkage is thus by Relatiwerschiebung the upper and lower retaining ring 3, 4 to each other.

According to the invention it is now provided that the support strut 5 has an elongated, made of bamboo wood support rod 7 and at the inner end with the support rod 7 fixedly connected end piece 8 for attachment to the upper retaining ring 3 and / or that the support strut 6 an elongated support rod 9 made of bamboo wood and at the inner end a fixedly connected to the support rod 9 tail 10 for attachment to the lower retaining ring 4 and / or that the support mast 1 iW Completely. i.e. except for attachments, made of bamboo wood.

In the general part of the description, the advantages of the choice of bamboo wood for the foldable support rods or at least for individual essential components of the foldable support rods have been explained vividly. This may be referred to in detail.

A support strut 5 of a support rod according to the invention is characterized by in Fig. 10 shown division into the support rod 7 and the end piece 8 for attachment to the upper retaining ring 3. You can see that in the assembly also in Fig. 11 , A used according to the invention support strut 6 is characterized by the division into the in Fig. 12 recognizable support rod 9 made of bamboo wood and the tail 10.

According to a preferred teaching of the invention, it is provided that the support rod 7 of the support strut 5 and / or the support rod 9 of the support strut 6 and / or the support mast 1 is designed as a bamboo strips consisting of stratified adhesive composite element. In the general part of the description, it has been explained how such a laminated composite element is made of bamboo wood. It is essential that such a laminated composite element on the surface can be smooth, because it can be processed in the end, although made of bamboo wood, with conventional joinery machines (lathe, milling, sliding table saw) in the desired manner. In this way, an elegant, weatherproof, highly resilient foldable support rods made of a warm, pleasant natural wood material is realized. In Fig. 10 the laminate structure is indicated by way of example.

According to the teachings of the invention, one can also use different materials for different essential parts of the support rod. For example, one could provide a hollow support pole 1 made of aluminum and combine it using the corresponding retaining rings 3, 4 with supporting struts 5 and struts 6 made of layer-laminated bamboo wood. So you can implement very special, design ideas.

3 and 4 show in the context that, according to the preferred teaching of the inven tion can be provided that the support rod 7 and / or the support rod 9 a for attaching an end piece 8; 10 reduced in size end portion 11; 12 has. The appropriate design of the end pieces 8, 10 can be seen for example in 8 and 9 , Their dimensions are compared to the dimensions of the end portions 11, 12 chosen so that at the end of continuous outer dimensions of the support strut 5 and the support strut 6 result. This can be seen in turn Fig. 10 and Fig. 12 , So the construction makes a very elegant, professional impression.

In the choice of material for the end pieces 8, 10 is not limited. An elegant version, which may be a bit more expensive, has 8, 10 brass tips, preferably polished or stainless steel. Other metals are also conceivable, these may then get a surface treatment. An alternative is also wood.

In principle, it is also possible to make the end pieces 8, 10 of layer-glued bamboo wood. In particular, the use of plastic, in particular of thermoplastic material, is particularly expedient and very attractive in terms of production technology. This can be processed well and inexpensively by injection molding. A fiber-reinforced, dyed plastic combines high strength with an elegant, professional look.

This in Fig. 9 . 10 . 11 and 12 illustrated embodiment shows a special design of the end piece 8 and 10, namely in such a way that the end piece 8; 10 has a suspension hook 13 for hanging on the upper retaining ring 3 and the lower retaining ring 4. This allows a particularly fast, economical mounting of the end pieces 8, 10 at corresponding counterparts.

The perspective view of the retaining rings 3, 4 in FIGS. 5 and 6 shows that these two retaining rings can be made even identical in the simplest case. They are only placed in different orientation on the support mast 1.

Fig. 11 shows an example of the upper retaining ring 3. This has corresponding recesses for inserting the end pieces 8 on the support rods 7 of the support struts 5. In these recesses, the hooks 13 of the end pieces 8 are secured by a circumferential clamping ring 3 ', which firmly around the retaining ring. 3 is curious. In FIGS. 5 and 6 If you see a circumferential recess on the outside of the retaining ring 3 and 4, where later the clamping ring 3 'has to sit. This fastening technique has long been state of the art for support rods of the type in question.

With regard to the execution of the upper retaining ring 3 and / or the lower retaining ring 4, there are the same possibilities as in the end pieces 8, 10, so that reference may be made to the above statements. In the illustrated and preferred embodiment, the retaining rings 3, 4 are also made of thermoplastic material and indeed fiber-reinforced and dyed produced.

In Fig. 1 and 2 is already indicated how the connection of the support strut 6 takes place with the associated support strut 5. In Fig. 12 you can see that more accurately. Here it is namely provided that for attachment of the outer end of the support rod 9 is attached to an associated support rod 7 at the outer end of the support rod 9 with this firmly connected end piece 10 and in the central region of the support rod 7, a hinge fitting 14 is attached to the support rod 7, with which the end piece 10 is pivotally connected. The hinge fitting 14 is fitted here on the support rod 7 of the support strut 5 fit. He is located, like Fig. 2 Central region in this sense is the area between the ends, preferably between about a quarter and about three quarters of the total length of the support rod 7. The illustrated and preferred Ausmbrungsbeispiel shows the hinge fitting 14 about 40% of the length the support rod 7 from the upper retaining ring 3 starting.

Fig. 12 shows the hinge fitting 14 with a fixing screw 14 ', which is not tightened here. First, the suspension hook 13 of the tail 10 of the support strut 6 is hung, then the screw 14 'is lightly tightened. As a result, the connection is not so easy-hanging, but has a certain inherent stability,

The hinge fitting 14 should not slip on the support rod 7. It can be secured against displacement by a separate measure - clamping, gluing, screwing.

With regard to the choice of material, the variants which have been described above for the end pieces 8, 10 also apply to the hinge fitting 14. Here, the hinge fittings 14 are preferably made of thermoplastic material.

So far, nothing has been said about how to propel the folding and folding or folding of the support rod. In the prior art described above, a solution with a cable pull and a crank drive has been addressed for a hollow support mast 1. The most common mode of propulsion in the private sector is via a pulley. Here, the doctrine of the invention offers a peculiarity that is made up of Fig. 7 results.

In Fig. 7 one sees from obliquely above on the upper retaining ring 3 at the upper end of the support mast 1 and recognizes the laterally projecting support struts 5. Here it is now provided that the upper retaining ring 3 is connected to the lower retaining ring 4 via a pulley 15 and that a deflection roller 16th or a Umlenkgleitstück for the pulley 15 is integrated into the upper retaining ring 3. So here the pulley cable 15 is guided by the retaining ring 3, which very elegantly integrates the deflection of the pulley cable 15 on the upper retaining ring 3. One end of the pulley rope 15 is firmly anchored to the lower retaining ring 4, the free end of the pulley rope 15 is pulled down by the user to bring the support link in the unfolded state, or is lowered to the support rod again under the weight of the support struts 5 fold up.

As has already been mentioned in the general part of the description, the subject of the invention is not only a foldable support frame for a garden umbrella, but also a garden umbrella with such support rods and a string attached thereto. The same applies to umbrellas, umbrellas or other, similarly designed umbrellas. It is also true for the teaching of the invention that the teaching is independent of the shape of the fabric (circular, oval, polygonal, ie hexagonal, octagonal or the like., Square or square).

Claims (12)

Foldable support rods for a garden umbrella, parasol or the like
with a support pole (1) with a lower end to be used in a holder, in particular a mast base, and an upper end facing a clothing (2),
with an upper retaining ring (3) arranged at the upper end of the support mast (1) and a lower retaining ring (4) arranged below it on the support mast (1),
with several, on the upper retaining ring (3) pivotally mounted with an inner end, in the unfolded state of the support rod from the upper retaining ring (3) outwardly projecting, on the circumference of the upper retaining ring (3) iW evenly distributed support struts (5) arranged for a Covering (2) and with a preferably the number of support struts (5) corresponding number of at the lower retaining ring (4) with an inner end pivotally mounted, in unfolded state of the support rod from the lower retaining ring (4) outwardly projecting and the support struts (5 ) correspondingly arranged support struts (6) which are pivotally mounted with their outer ends on the support struts (5) in the central region thereof,
wherein the unfolding and folding in of the support rod by relative displacement of the upper and lower retaining ring (3, 4) takes place to each other,
characterized,
in that the support strut (5) has an elongated, bamboo wooden support rod (7) and at the inner end with the support rod (7) fixedly connected end piece (8) for attachment to the upper retaining ring (3) and / or that the support strut (6 ) has an elongated, consisting of bamboo wood support rod (9) and at the inner end with the support rod (9) fixedly connected end piece (10) for attachment to the lower retaining ring (4) and / or that the support mast (1) iW completely, ie except for attachments, made of bamboo wood. Support rod according to claim 1, characterized
that the supporting rod (7) of the support brace (5) and / or the supporting rod (9) of the supporting strut (6) and / or the support mast (1) is designed as consisting of bamboo strips, layer-glued composite element. Support rod according to claim 2, characterized
that the composite element is produced in a cold lamination process. Supporting rod according to one of claims 1 to 3, characterized in that the support rod (7) and / or the support rod (9) has an end portion (11, 12) which is reduced in size for the attachment of an end piece (8; Supporting rod according to one of claims 1 to 4, characterized in that the end piece (8; 10) made of metal, wood or, preferably, plastic, in particular of a thermoplastic material. Supporting rod according to one of claims 1 to 5, characterized in that the end piece (8; 10) has a suspension hook (13) for hanging on the upper retaining ring (3) or on the lower retaining ring (4). Supporting rod according to one of claims 1 to 6, characterized in that the upper retaining ring (3) and / or the lower retaining ring (4), except for attachments, made of metal, wood or, preferably, plastic, in particular of a thermoplastic material, consists. Supporting rod according to one of claims 1 to 7, characterized in that for attaching the outer end of the support rod (9) on an associated support rod (7) at the outer end of the support rod (9) fixedly connected to this end piece (10) is mounted and in the central region of the support rod (7) a hinge fitting (14) on the support rod (7) is mounted, with which the end piece (10) is pivotally connected, wherein, preferably, the hinge fitting (14) against displacement on the support rod (7) is secured. Supporting rod according to claim 8, characterized
that the GelenkbeschIag (14), except for attachments such as screws or the like, made of metal, wood or, preferably, plastic, in particular of a thermoplastic material. Supporting rod according to one of claims 1 to 9, characterized in that the upper retaining ring (3) at the upper end of the support mast (1) is fixedly mounted and the lower retaining ring (4) on the support mast (1) is mounted displaceably up and down. Support rod according to claim 10, characterized
that the upper retaining ring (3) with the lower retaining ring (4) via a pulley rope (15) is connected and that a deflection roller (16) or the like. for the pulley rope (15) in the upper retaining ring (3) is integrated. Garden umbrella, umbrella or the like.
with a foldable support rod according to one of claims 1 to 11, and with a on the support struts (5) of the support rod, preferably at the outer ends, attached string (2).

Images