SUN UMBRELLA

Description

Technical field of the invention

[0001] The invention relates to a parasol of the variety used to project shade, in order to provide shelter from the sun. This parasol makes it possible to regulate the surface area of the shade projected, in order to adapt it to different locations and needs.

Background of the invention

[0002] Parasols designed to project shade, which may adopt a folded position suitable for transport, and an operative position, in which to provide shelter from the sun, are known about in the state of the art.

[0003] Parasols provided with spokes and a sheet of fabric are also known about, it being possible to fold and unfold the same like an umbrella, as described in documents ES1024843U, ES1060738U and ES1056592. Nevertheless, it is not possible to adjust the surface area of the shade projected by these parasols, since the spokes thereof must be open completely so as not to obstruct access to the shaded area.

[0004] Document US 4, 836,232 describes a parasol comprising spokes and a sheet of fabric, which can be locked in a selected spread position. The present invention therefore aims to reveal a parasol that makes it possible to regulate the shade projected by the same, by adopting different operative positions in which different surface areas of shade are projected.

[0005] Another aim of the present invention constitutes revealing a parasol that may be housed in narrow spaces, where current parasols known about in the state of the art cannot be located.

Explanation of the invention

[0006] The above mentioned aims are attained by providing a parasol according to claim 1. The parasol is essentially characterised in that the mechanism comprises a shaft and a plurality of overlapping rings, which are mounted rotationally around said shaft, with at least two spokes being joined to different rings. It is also characterised in that the mechanism comprises a stop device, which may be operated manually, capable of blocking the relative movement between rings, thereby making it possible to alter the position of the spokes so that the fabric unfolds in such a way that it creates the right amount of shade required. This also makes it possible to lock the spokes into position, thereby making it possible to choose the angle at which the parasol is opened.

[0007] It must also be noted that the spokes are joined firmly to the rings, directed perpendicularly to the shaft, comprising an equal number of spokes and rings, each spoke being joined to a respective ring, it therefore being possible for the fabric to be unfolded in such a way that it is perpendicular to the shaft, thereby maximising the shade projected for a desired circular segment, whilst preventing the ends of the spokes from being too low.

[0008] According to another characteristic of the invention, the rings form a pile, a bearing being arranged between each two rings, it being possible for said bearing to be a friction bearing or an axial washer, which can slide when dry or oiled and is preferably made of plastic, therefore enabling the rings to be rotated smoothly, without making noise.

[0009] It must also be noted that the fabric is joined to all of the spokes and extends from the upper spoke to the lowest spoke, the length of the fabric preferably being the same between every two consecutive spokes, i.e. between each two spokes joined to both adjacent rings, in such a way that the fabric spans all of the spokes, thereby resulting in a better distribution of said fabric.

[0010] It must also be noted that the length of the fabric is the same between every two consecutive spokes, i.e. between each two spokes joined to both adjacent rings, in such a way that, upon the spokes being opened out completely, the fabric between each pair of spokes determines the same circular segment, thus meaning the fabric arranged between each pair of spokes has the same level of wind resistance.

[0011] It must also be noted that the parasol is adapted to form a second loosely closed unfolded position, upon the lower spoke rotating by one full turn, the lower spoke therefore being aligned with the upper spoke, wherein, upon arranging the rest of the spokes at an equal distance from one another, the fabric between the spokes is loose, thereby enabling a first kind of finish where the edges of the parasol form waves as a result of the clearance produced in the fabric, whilst facilitating the rapid evacuation of water in the event of rain along the channel formed by said clearance.

[0012] The parasol is also adapted such that, after having achieved the second loosely closed unfolded position and going on to rotate the lower spoke, it determines a third tense closed unfolded position, in which a second kind of finish where the edges of the parasol are essentially straight and tense is achieved. In this third tense closed unfolded position, the lower spoke will preferably be aligned with the next spoke, in order to achieve a better finish and reduce wind resistance. Naturally, the possibility of the fabric being larger in order to enable the spokes to continue rotating has been taken into account, in such a way that the segments of fabric form a helical structure.

[0013] It must be noted that the parasol comprises a total of eight spokes, the fabric between each two consecutive spokes being long enough to enable the circular segment formed by two consecutive spokes to reach 60°, in such a way that when the fabric is completely open, they may form a hexagon.

[0014] In other embodiments, the parasol comprises two spokes being joined to each ring, allowing more combinations in the joints of the fabric and the spokes, such that more than a portion of fabric can be used.

[0015] In an embodiment, the two spokes joined to the same ring form an angle of 180 degrees between them, such that when the fabric is joint to one of the spokes of each ring, and extends from a upper spoke to a lower spoke, allowing that two fabrics could be placed, joining each one to one of the spokes of the pair of spokes of each ring, in the unfolded position the fabric shapes as a double helix, allowing the projection of a denser shade.

[0016] In another embodiment the fabric is attached to the two spokes that are attached to the same ring, allowing the rings to freely rotate as the fabric is only fixed to the spokes of the same ring. According to this variant, when the two spokes are attached to the same ring they form an angle of 60 degrees with each other, it is possible to form a parasol that in its unfolded position has an hexagonal shape.

[0017] It must also be noted that the stop device comprises two press bodies, between which the rings are arranged such that they overlap, and with which they form a packet, the press bodies being able to move closer to or further away from one another and adopt both stop and free positions, axially compressing or relaxing the plurality of overlapping rings, in order to respectively block or allow the relative movement thereof.

[0018] According to the invention, at least one of the press bodies is joined to the shaft, in such a way that upon the plurality of rings being compressed, in addition to preventing the relative movement thereof, the assembly formed by the same is also prevented from rotating around the shaft.

[0019] It must also be noted that the press bodies are subject to the action of a number of elastic means, which tend to arrange them in their stop position, i.e. at a distance from one another, such that they axially compress the plurality of rings; the stop device comprising a number of actuation means adapted to overcome the force of said elastic means and arrange the press bodies in their free position, i.e. sufficiently separated to allow the rings to rotate freely around the shaft.

[0020] According to another characteristic, the parasol furthermore comprises a regulation screw, in order to regulate the force of the elastic means.

[0021] It must also be noted that the elastic means comprise a spring that acts upon traction, a terminal or end of the spring being connected to one of the press bodies, being capable of relative movement in relation to the same, it thereby being possible to regulate the compression of the spring and, as such, the force that the same exerts on the press bodies.

[0022] It must also be noted that the actuation means comprise a cam or a manually manoeuvrable eccentric wheel, in order to thus be able to stop and release the spokes easily by means of a rotational movement.

[0023] It must also be noted that the actuation means furthermore comprise a lever for manually moving the cam, in such a way that users may easily operate the cam.

[0024] It must also be noted that the shaft comprises fastening means forfastening to a post and fastening means for fastening to a wall support, thereby enabling the parasol to be held up both in a post and on a wall.

Brief description of the drawings

[0025] In order to complement the present description, with the aim of facilitating an understanding of the invention characteristics, the present descriptive specification is accompanied by a set of drawings, in which the following has been represented by way of non-limiting illustration:

Figure 1. is a front cross-sectional view of the parasol of the present invention,

Figure 2. is a side cross-sectional view of the parasol of the present invention,

Figure 3. shows the parasol mounted in a post when in folded position,

Figure 4. shows the parasol mounted in a post in a first unfolded position,

Figure 5 shows the parasol mounted in a post in a second unfolded position,

Figure 6 shows the parasol mounted in a post in a third unfolded position,

Figure 7 shows a second embodiment of the parasol in its folded position,

Figure 8 shows the second embodiment in an unfolded position,

Figure 9 shows a third embodiment of the parasol in its folded position,

Figure 10 shows the third embodiment in an unfolded position, and Figure 11 shows a ring of the third embodiment.

Detailed description of the drawings

[0026] Figure 1 is a cross-sectional view of the parasol 1 mechanism 4 of the present invention. As can be observed, the mechanism 4 makes it possible to vary the arrangement of the spokes 2 so that the parasol 1 adopts various positions, amongst which a folded position A and various operative unfolded positions B1, B2 and B3 stand out. The mechanism 4 furthermore comprises a shaft 5 and a plurality of overlapping rings 6, mounted rotationally around said shaft 5, at least two spokes 2 being joined to different rings 6. The mechanism 4 furthermore comprises a stop device 7, which may be operated manually and is capable of blocking relative movement between the rings 6.

[0027] As can also be seen in Figure 1, the spokes 2 are joined firmly to the rings 6, directed perpendicularly to the shaft 5 and the invention comprises an equal number of spokes 2 and rings 6, each spoke 2 being joined to a respective ring 6. The spokes 2 are to be separated from their rings 6 in order to dismount them. It is also foreseen that the spokes 2 may be foldable, thus making it possible to adapt a compact transportation and storage form.

[0028] The various rings 6 of the mechanism 4 form a pile, a bearing 9 being arranged between every two rings 6, facilitating the rotation of the spokes 2 when the stop device 7 is not acting on said pile of rings 6. The bearings 9 may be friction bearings, such as axial sliding washers that move when dry or oiled, for example made of plastic material.

[0029] It is also possible to observe, in both Figures 1 and 2, that the stop device 7 comprises two press bodies 10, between which the overlapping rings 6 are arranged, thereby forming a packet with the same, the press bodies 10 being capable of moving closer to or further away from one another and adopting both stop and free positions, which axially compress or relax the plurality of overlapping rings 6 in order to respectively block or free the relative movement thereof. At least one of the press bodies 10, specifically the upper press body 10, is joined to the shaft 5, in such a way that upon the plurality of rings 6 being compressed, in addition to impeding the relative movement thereof, the assembly formed by the same is also prevented from rotating around the shaft 5. Said press bodies 10 are in turn subject to the action of a number of elastic means 11, which tend to arrange them in their stop position, i.e. at a distance from one another, such that they axially compress the plurality of rings 6; the stop device 7 comprising a number of actuation means 12 adapted to overcome the force of said elastic means 11 and arrange the press bodies 10 in their free position, i.e. separated enough to facilitate the free rotation of the rings around the shaft 5. The lower press body 10 will be able to travel between 1 and 2 millimetres, thus serving to provide a clearance between the rings 6 large enough to facilitate the rotation of the spokes 2. The mechanism 4 furthermore comprises a regulation screw 13 in order to regulate the force of the elastic means 11. These elastic means 11 comprise a spring 14 that acts by means of traction, a spring 14 terminal or end being connected to one of the press bodies 10, with the ability to move relatively in relation to the same, it being possible to regulate the compression of the spring 14 as a result and as such, the force that this exerts on the press bodies 10. Of course, it is contemplated that at least one press body 10 may itself act as a ring 6, being attached thereto at least one of the spokes 2.

[0030] The actuation means 12 comprise a cam 15 that may be manoeuvred manually by means of a lever 16 that serves to arrange the press bodies 10 in their free position, in order to be able to rotate the spokes 2 and arrange the fabric 3 of the parasol 1 in an unfolded operative position, as illustrated later on. Upon achieving the operative unfolded position desired, the same lever 16 serves to arrange the press bodies 10 in the stop position once again, in order to fix the unfolded operative position.

[0031] As can be seen in Figures 1 and 2, the shaft 5 of the mechanism 4 is provided with a number of fastening means 17, which make it possible to fasten said mechanism 4 to a post 18 or an umbrella stand. The shaft 5 illustrated in Figure 2 may additionally or alternatively be provided with a number of anchoring means, in order to provide the parasol 1 with a wall support, in order to form a canopy or even on the floor, in order to form a partition screen.

[0032] As can be seen, the mechanism 4 of the parasol 1 shown in Figures 1 and 2 is provided with a series of spokes 2, between which a piece of fabric 3 is extended, as shall further be seen later on. This piece of fabric 3 may be a piece of vinyl, acrylic or PVC fabric, for example, designed to project shade. The elements that form the mechanism 4 are essentially to be made from aluminium or stainless steel.

[0033] The parasol 1 will preferably be made up of eight spokes 2, the fabric 3 being joined to all of the spokes 2 and extending from the upper spoke 2a to the lower spoke 2b, as shown in Figures 3 to 6, wherein, in Figure 3, the parasol 1 is firstly shown in the folded position A, with the spokes 2 aligned in such a way that the fabric 3 between the spokes forms clearances, whilst Figures 4 and 6 shown the parasol 1 unfolded in various operative positions B1, B2, B3. Naturally, it is foreseen that they will be able to adopt other operative positions by varying the rotation between the spokes 2 in relation to one another, so that the fabric 3 forms a lesser or greater circular segment. Although the parasol 1 is shown to be mounted to a post 18 in Figures 3 to 6, the parasol 1 may alternatively be mounted to a wall or wall support, such that, when anchored to the wall, it could unfold with the upper spoke 2a applied against the wall and the lower spoke 2b likewise applied against the wall, the fabric 3 therefore forming a circular segment at approximately 180°, which protrudes from the wall by way of a canopy or visor. As such, it would be possible to successfully project shade onto a wall, without needing to use a stand. Likewise, the parasol 1 may be arranged in a corner, with the spokes 2 unfolded such that they occupy the surface available, for example 90°, such that the fabric 3 projects shade in this corner.

[0034] In order to unfold the parasol 1 starting from the folded position A shown in Figure 3, until the same adopts an operative unfolded position B1, B2, B3, the user must firstly actuate the stop device 7 using the lever 16 in order to free the spokes 2. Once these have been released and may rotate freely, the user will take one of the spokes 2, preferably the lower spoke 2b and make it rotate, separating it from the upper spoke 2a, in order to thus unfold the fabric 3 of the parasol 1, such that the same forms a circular segment that will project the desired shade. After having obtained the desired shade, the user would lock the spokes 2 into this position by means of the same stop device 7. For example, Figure 4 shows a first operative unfolded position B1, in which the parasol 1 projects shade in the form of a 90° circular segment. In order to obtain a better finish, it is recommendable that the length of the fabric 3 be the same between every two consecutive spokes 2, i.e. between every two spokes 2 of those joined to both adjacent rings 6.

[0035] Going on to rotate the spokes 2, it is possible to select other operative positions as necessary, until you reach 360° degrees. As can be seen in Figure 5, upon the lower spoke 2b making a complete turn, the same would be aligned with the upper spoke 2a, the fabric 3 being loose between the rest of the spokes 2, arranged at equal distances for example. In this position, a second unfolded positon B2 is determined, wherein the parasol 1 is closed, with the fabric 3 being loose. If the fabric 3 between each two consecutive spokes 2 is long enough for the circular segment formed by two consecutive spokes to reach 60°, after adopting the second unfolded position B2, upon continuing to rotate, it would therefore be possible to attain a third closed unfolded position B3, the fabric 3 being tense, as shown in Figure 6. Fig. 7 shows a second alternative embodiment of the parasol 1, provided with two rods 2 in each ring 6 disposed at an angle of 180 degrees, as shown in Fig. 7 in its folded position A. It is noted that the mechanism 4 of this second embodiment of the parasol 1 is the same as described above and shown in Figures 1 and 2, but instead of being provided each ring 6 of a spoke 2, each ring 6 has two spokes 2 arranged at an angle of 180 degrees.

[0036] It is noted that the fabric 3 is attached to a spoke 2 of each ring 6 and extends from an upper spoke 2a to a lower spoke 2b. Naturally, being each ring 6 provided with a pair of spokes 2 will need to have two portions of fabric 3, each of which extend from one of the upper spokes 2a through one of the lower spokes 2b, each fabric 3 being attached to a spoke 2 of each pair of spokes 2 of each ring 6. Thus, by deploying the parasol 1 until reaching the unfolded position B4 shown in FIG. 8, the fabrics 3 of the parasol 1 will adopt a double helix shape allowing, besides a more attractive visual effect, projecting a thicker shadow, as it will be necessary for light to pass through the two fabrics 3.

[0037] Fig. 9 shows a third alternative embodiment of the parasol 1 in its folded position A in which the fabric 3 is attached to the two spokes 2 that are attached to the same ring 6 forming each pair of spokes 2 attached to the same ring 6 an angle of 60 degrees, so that the fabric 3 attached to each pair of spokes 2 and provided with a straight end, forms a portion of an hexagon, as illustrated in the detail of Fig. 11. In this variant, the mechanism 4 is also similar to that described above and shown in FIGS. 1 and 2. In this third variant, the parasol 1 may adopt in the deployed unfolded position B5 shown in FIG. 10 a closed hexagonal shape. Advantageously, as the fabric 3 is not attached between the spokes 2 of different rings 6, the portions are freely rotatable and may adopt other intermediate positions where the portions overlap. It is also envisaged in other alternative embodiments of the parasol 1 that the spokes 2 of one ring 6 may form other angles, for example if the spokes form an angle of 45 degrees, the parasol 1 may adopt a closed octagonal form.

[0038] Although the second and third embodiment show the parasol 1 mounted on a post 18, the parasol 1 may alternatively also be mounted on a wall or wall bracket as described above, to form an awning, or even on the ground to forming a separation partition.

Claims

1. A parasol (1) comprising a series of spokes (2), between which a piece of fabric (3), designed to project shade extends, these spokes being linked to a mechanism (4) that makes it possible to vary the arrangement of the spokes, such that the parasol adopts at least one folded position (A) and one operative unfolded position (B1, B2, B3, B4, B5), the mechanism comprising a shaft (5) and a plurality of rings (6), which overlap and are mounted rotationally around said shaft, at least two spokes being joined to different rings, the mechanism comprising a stop device (7), which may be operated manually and is capable of blocking relative movement between rings,
wherein the stop device (7) comprises two press bodies (10), between which the rings (6) are arranged such that they overlap and form a packet with the same, the press bodies being able to move closer to or further away from one another and to adopt both stop and free positions, which respectively compress or relax the plurality of overlapping rings axially, in order to respectively block or allow the relative movement thereof;
wherein at least one of the press bodies (10) is joined to the shaft (5), in such a way that upon compressing the plurality of rings (6), in addition to impeding the relative movement thereof, the assembly formed by the same is also prevented from rotating around the shaft; wherein the press bodies (10) are subject to the action of a number of elastic means (11), which tend to arrange them in their stop position, i.e. at a distance from one another such that they axially compress the plurality of rings (6), the stop device comprising a number of actuation means (12), adapted to overcome the force of said elastic means and arrange the press bodies in their free position, i.e. sufficiently separated from another so as to allow the rings to rotate freely around the shaft (5).

2. The parasol (1) according to the previous claim, characterised in that it furthermore comprises a regulation screw (13), in order to regulate the force of the elastic means (11).

3. The parasol (1) according to any of the previous claims, characterised in that the elastic means (11) comprise a spring (14) that acts by way of traction, one of the press bodies (10) being connected to a terminal or end of the spring, with the ability to move relatively in relation to the same, it thus being possible to regulate the compression of the spring and, as such, the force this exerts on the press bodies.

4. The parasol (1) according to any of the previous claims, characterised in that the actuation means (12) comprise a manually operable cam (15).

5. The parasol (1) according to the previous claim, characterised in that the actuation means (12) furthermore comprise a lever (16) for manually moving the cam (15).

6. The parasol (1) according to any one of the previous claims, characterised in that the fabric (3) is joined to all of the spokes (2) and extends from the upper spoke (2a) to the lower spoke (2b).

7. The parasol (1) according to any one of the previous claims, characterised in that this fabric (3) is the same length between every two consecutive spokes (2), i.e. between every two spokes joined to both adjacent rings (6).

8. The parasol (1) according to any one of the previous claims, characterised in that it is adapted to form a second loosely closed unfolded position (B2) upon the lower spoke (2b) rotating one full turn, the lower spoke (2b) being aligned with the upper spoke (2a), wherein the rest of the spokes are arranged at an equal distance from one another, if the fabric between the spokes is loose.

9. The parasol (1) according to any one of the previous claims, characterised in that it is adapted for, after having reached the second loosely closed unfolded position (B2) and going on to rotate the lower spoke (2b), determining a third tensely closed unfolded position (B3) wherein the rest of the spokes are at an equal distance from one another, the fabric between the spokes therefore being tensed.

10. The parasol (1) according to any one of the previous claims, characterised in that it comprises a total of eight spokes (2), the fabric (3) being long enough between every two consecutive spokes in order for the circular segment formed by two consecutive spokes to reach 60°.

11. The parasol (1) according to any one of the claims 1 to 5, characterised in that it comprises two spokes (2) being joined to each ring (6).

12. The parasol (1) according to the preceding claim, characterised in that the two spokes (2) joined to the same ring (6) form an angle of 180° between them.

13. The parasol (1) according to the preceding claim, characterised in that the fabric (3) is attached to a spoke (2) of each ring (6) and extending from an upper spoke (2a) to a lower spoke (2b).

14. The parasol (1) according to claim 11, characterised in that the fabric (3) is attached to the two spokes (2) joined to the same ring (6).

15. The parasol (1) according to the preceding claim, characterised in that the two spokes (2) joined to the same ring (6) form an angle of 60° between them.

Ansprüche

1. Sonnenschirm (1) umfassend eine Reihe von Speichen (2), zwischen welchen sich ein Stück Stoff (3) erstreckt, welcher dazu gestaltet ist, Schatten zu spenden, wobei diese Speichen mit einem Mechanismus (4) verbunden sind, welcher es ermöglicht, die Anordnung der Speichen zu ändern, so dass der Sonnenschirm mindestens eine gefaltete Stellung (A) und eine betriebliche entfaltete Stellung (B1, B2, B3, B4, B5) annimmt, wobei der Mechanismus eine Welle (5) und eine Vielzahl von Ringen (6) umfasst, welche sich überlappen und drehbar um die genannte Welle herum montiert sind, wobei mindestens zwei Speichen an unterschiedliche Ringe gefügt sind, wobei der Mechanismus eine Anschlagvorrichtung (7) umfasst, welche manuell betrieben werden kann und in der Lage ist, eine Relativbewegung zwischen den Ringen zu blockieren,
wobei die Anschlagvorrichtung (7) zwei Presskörper (10) umfasst, zwischen welchen die Ringe (6) angeordnet sind, so dass sie sich überlappen und damit ein Packet bilden, wobei die Presskörper in der Lage sind, sich näher aneinander zu bewegen oder sich voneinander zu entfernen und sowohl Anschlag- als auch Freistellungen anzunehmen, welche jeweils die Vielzahl von sich überlappenden Ringen axial zusammendrücken oder entspannen, um jeweils die Relativbewegung derselben zu blockieren oder zu erlauben;
wobei mindestens eins der Presskörper (10) derart an die Welle (5) gefügt ist, dass nach dem Zusammendrücken der Vielzahl von Ringen (6), zusätzlich zum Verhindern der Relativbewegung derselben, die Drehung der aus denselben gebildeten Baugruppe um die Welle herum auch verhindert wird;
wobei die Presskörper (10) der Wirkung einer Anzahl von elastischen Mitteln (11) ausgesetzt sind, welche dazu neigen, sie in deren Anschlagstellung anzuordnen, d.h. in einem Abstand zueinander, so dass sie die Vielzahl von Ringen (6) axial zusammendrücken, wobei die Anschlagvorrichtung eine Anzahl von Betätigungsmitteln (12) umfasst, welche dazu angepasst sind, die Kraft der genannten elastischen Mitteln zu überwinden und die Presskörper in ihrer Freistellung anzuordnen, d.h. voneinander genug getrennt, um zu erlauben, dass sich die Ringe frei um die Welle (5) herum drehen.

2. Sonnenschirm (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass er zusätzlich eine Stellschraube (13) umfasst, um die Kraft der elastischen Mittel (11) zu regulieren.

3. Sonnenschirm (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die elastische Mittel (11) eine Feder (14) umfassen, welche mittels Zug wirkt, wobei eins der Presskörper (10) an einem Anschlussteil oder Ende der Feder angeschlossen ist, mit der Fähigkeit sich in Bezug auf dieselbe relativ zu bewegen, so dass es möglich ist, das Zusammendrücken der Feder und somit die Kraft, welche sie auf den Presskörpern ausübt, zu regulieren.

4. Sonnenschirm (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Betätigungsmittel (12) einen manuell bedienbaren Nocken (15) umfassen.

5. Sonnenschirm (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Betätigungsmittel (12) zusätzlich einen Hebel (16) zum manuellen Bewegen des Nockens (15) umfassen.

6. Sonnenschirm (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Stoff (3) an alle Speichen (2) gefügt ist und sich von der oberen Speiche (2a) bis zur unteren Speiche (2b) erstreckt.

7. Sonnenschirm (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass dieser Stoff (3) die gleiche Länge zwischen jeden zwei aufeinanderfolgenden Speichen (2) aufweist, z.B. zwischen jeden zwei Speichen, welche an beide benachbarte Ringe (6) gefügt sind.

8. Sonnenschirm (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er dazu angepasst ist, eine zweite locker geschlossene entfaltete Stellung (B2) zu bilden, nachdem sich die untere Speiche (2b) eine ganze Drehung dreht, wobei die untere Speiche (2b) mit der oberen Speiche (2a) fluchtet, wobei der Rest der Speichen in einem gleichen Abstand voneinander angeordnet sind, wenn der Stoff zwischen den Speichen locker ist.

9. Sonnenschirm (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er dazu angepasst ist, nachdem er die zweite locker geschlossene entfaltete Stellung (B2) erreicht hat und weiter geht, um die untere Speiche (2b) zu drehen, eine dritte straff geschlossene entfaltete Stellung (B3) zu bestimmen, wobei sich der Rest der Speichen in einem gleichen Abstand voneinander befinden, so dass der Stoff zwischen den Speichen dadurch gestrafft wird.

10. Sonnenschirm (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er insgesamt acht Speichen (2) umfasst, wobei der Stoff (3) lang genug zwischen jeden zwei aufeinanderfolgenden Speichen ist, damit der kreisförmige, aus zwei aufeinanderfolgenden Speichen gebildete Abschnitt 60° erreicht.

11. Sonnenschirm (1) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass er zwei Speichen (2) umfasst, welche an jeden Ring (6) gefügt sind.

12. Sonnenschirm (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die zwei, an den gleichen Ring (6) gefügten Speichen (2) einen Winkel von 180° dazwischen bilden.

13. Sonnenschirm (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Stoff (3) an einer Speiche (2) jedes Ringes (6) befestigt ist und sich von einer oberen Speiche (2a) zu einer unteren Speiche (2b) erstreckt.

14. Sonnenschirm (1) nach Anspruch 11, dadurch gekennzeichnet, dass der Stoff (3) an den zwei Speichen (2) befestig ist, welche an den gleichen Ring (6) gefügt sind.

15. Sonnenschirm (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die zwei Speichen (2), welche an den gleichen Ring (6) gefügt sind, einen Winkel von 60° dazwischen bilden.

Revendications

1. Parasol (1) comprenant une série de baleines (2), entre lesquelles s'étend une pièce de tissu (3), conçue pour projeter de l'ombre, ces baleines étant reliées à un mécanisme (4) qui rend possible la variation de l'agencement des baleines, de manière que le parasol adopte au moins une position pliée (A) et une position dépliée opérationnelle (B1, B2, B3, B4, B5), le mécanisme comprenant un arbre (5) et une pluralité d'anneaux (6), qui se chevauchent et sont montées à rotation autour dudit arbre, au moins deux baleines étant reliées à différents anneaux, le mécanisme comprenant un dispositif d'arrêt (7), qui peut être actionné manuellement et est apte à verrouiller le mouvement relatif entre les anneaux,
dans lequel le dispositif d'arrêt (7) comprend deux corps de pression (10), entre lesquels les anneaux (6) sont aménagés de manière qu'ils se chevauchent et forment un paquet conjointement avec celui-ci, les corps de pression étant aptes à se déplacer près de ou éloigné l'un de l'autre et adopter aussi bien les position d'arrêt que libre, qui compriment ou détendent respectivement la pluralité d'anneaux de chevauchement axialement, afin de verrouiller ou permettre respectivement leur mouvement relatif ;
dans lequel au moins un des corps de pression (10) est relié à l'arbre (5), de manière qu'en comprimant la pluralité d'anneaux (6), outre le fait d'empêcher leur mouvement relatif, on évite également que l'ensemble formé par ceux-ci tourne autour de l'arbre ;
dans lequel les corps de pression (10) sont soumis à l'action d'un nombre de moyens élastiques (11) qui tendent à les aménager dans leur position d'arrêt, c'est-à-dire à une distance l'un de l'autre de manière qu'ils compriment axialement la pluralité d'anneaux (6), le dispositif d'arrêt comprenant un nombre de moyens d'actionnement (12), adaptés pour vaincre la force desdits moyens élastiques et aménager les corps de pression dans leur position libre, c'est-à-dire, suffisamment séparés l'un de l'autre pour permettre que les anneaux tournent librement autour de l'arbre (5).

2. Parasol (1) selon la revendication précédente, caractérisé en ce qu'il comprend en outre une vis de réglage (13), afin de régler la force des moyens élastiques (11).

3. Parasol (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens élastiques (11) comprennent un ressort (14) qui est actionné par traction, un des corps de pression (10) étant relié à un terminal ou une extrémité du ressort, ayant la capacité de se déplacer par rapport à celui-ci, en étant ainsi possible de régler la compression du ressort et, le cas échéant, la force qu'il exerce sur les corps de pression.

4. Parasol (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens d'actionnement (12) comprennent une came actionnable à la main (15).

5. Parasol (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens d'actionnement (12) comprennent en outre un levier (16) pour actionner manuellement la came (15).

6. Parasol (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le tissu (3) est relié à toutes les baleines (2) et s'étend de la baleine supérieure (2a) à la baleine inférieure (2b).

7. Parasol (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le tissu (3) a la même longueur entre deux baleines consécutives (2), c'est-à-dire entre deux baleines reliées aux deux anneaux attenants (6).

8. Parasol (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est adapté pour former une deuxième position dépliée fermée lâchement (B2) sur la baleine inférieure (2b) en tournant la baleine inférieure (2b) un tour complet, la baleine inférieure (2b) étant alignée avec la baleine supérieure (2a), dans lequel le reste des baleines sont aménagées à une distance égale entre elles, si le tissu entre les baleines est lâche.

9. Parasol (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est adapté pour, après avoir atteint la deuxième position dépliée fermée lâchement (B2) et continuant à faire tourner la baleine inférieure (2b), en déterminant une troisième position dépliée fermée tendue (B3) dans laquelle le reste des baleines sont à une distance égale entre elles, le tissu entre les baleines étant alors tendu.

10. Parasol (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend au total huit baleines (2), le tissu (3) étant suffisamment long entre deux baleines consécutives pour que le segment circulaire formés par deux baleines consécutives atteigne 60°.

11. Parasol (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'il comprend deux baleines (2) reliées à chaque anneau (6).

12. Parasol (1) selon la revendication précédente, caractérisé en ce que les deux baleines (2) reliées au même anneau (6) forment un angle de 180° entre elles.

13. Parasol (1) selon la revendication précédente, caractérisé en ce que le tissu (3) est fixé à une baleine (2) de chaque anneau (6) et s'étend d'une baleine supérieure (2a) à une baleine inférieure (2b).

14. Parasol (1) selon la revendication 11, caractérisé en ce que le tissu (3) est fixé aux deux baleines (2) reliées au même anneau (6).

15. Parasol (1) selon la revendication précédente, caractérisé en ce que les deux baleines (2) reliées au même anneau (6) forment un angle de 60° entre elles.

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