EP2090723A1 - Supporting framework for mountable flat material, particularly in the form of hollow bodies - Google Patents

Abstract

The structure has rod extensions (42, 43) locked at a central retaining element (36) such that the rod extensions are pivoted in a rotatable direction about transverse axes. The rod extensions are attached at ends (1a, 4a) of rods, where the ends rest in a plane and are pivotally hinged around the transverse axes at the retaining element in a ring-shaped arrangement. The extensions are arranged at distance to each other. The rod extensions include curved attachment pieces (46a, 46b), which support the bent rod ends.

Description

The invention relates to a support structure for in particular as a hollow body aufspannbares sheet material according to the preamble of claim 1.

Such hollow bodies, which comprise stretched, flat material, are preferably lampshades, dome tents, greenhouses or similar spatial objects. However, the applicability of the support structure according to the invention is not limited to the aforementioned objects.

A known support structure of a portable lamp essentially comprises a rod-shaped holder and a lampshade ( EP 1 059 483 B1 ). The lampshade is clamped by means of tensioning means in the form of elastic rods such as spring steel wire, spring band steel, fiberglass or carbon rods, which can also be applied in the present application subject, in its shape. The clamping means are pivotally articulated on the one hand at the bottom of the holder, namely on a light socket, and on the other hand on a holding element above the holder. The holder has at least above the light socket on a square bar, which passes through the approximately annular support member and is arranged at this height adjustable. For height adjustment can serve a locking bolt lock or a screw. In both cases, the possibility is given to fix the holding element on the upper holding element or the square bar in different positions. A disadvantage of this support structure in particular that the holder must be connected to the upper square bar via rods to a solid unit, so that the upper support member and the articulated in this ends of the elastic rods can be fixed. However, this design of the holder is disturbing in many applications, because it casts shadows, for example in a lamp or limited in other conceivable applications, the free interior of the hollow body formed with this support structure. Outstanding parts of the square rod limit in the clamped state of the support structure their application, can even cause accidents and disturb the aesthetic impression.

On the other hand, another belonging to the prior art support structure for dome tents with arcuately stretched rods whose lower ends are arranged in holding openings of a running on the ground, stretched by the rods to a polygon Gurtrings and their upper ends in a vertex of the dome in radially inwardly extending openings of a rod connecting element are inserted, a free space on ( DE 103 46 948 B4 ). However, this support structure comprises the bottom tensioned belt ring which receives the lower ends of the tensioned rods to form the domed dome. Furthermore, to dismantle and transport the dome tent, the bars must be individually pulled out of the belt ring and the rod connecting element, which is cumbersome and time consuming.

Another belonging to the prior art support structure of a collapsible lampshade is a tensioning system in the manner of an umbrella frame, which resilient tension wires as elastic rods and Spreizstäbe, which are hinged to the tension wires ( DE-A-70 09 309 . FR-A-2 093 419 ). The tension wires and the spreader bars are further articulated to a respective slide, which is displaceable on a central tube. In particular, two groups of spreader bars can be provided for spreading a set of tensioning wires so that two spreader bars each act on each tensioning wire. This support structure limits the free interior of the lampshade to a large extent, since not only the central tube is guided through this interior, but also extend the spreader bars.

In a known support structure of the aforementioned type ( EP 0 563 464 A ) is as a holding element of a tent, a connecting body with offset by angularly arranged slots known, each having upwardly open recesses in which transverse axes of rod extensions can be stored. On back sides of the rod extensions, which are shaped inclined, inclined portions of the slots may rest in the connecting body. In openings of the rod extensions tent poles are inserted, which are otherwise unsupported by the rod extensions. After the tent poles are mounted and the rod extensions are inserted in the slots, a mounting plate, which is a blocking element, is secured to the connector body by means of a bolt, whereby the rod extensions can not be removed from the slots. In this case, the mounting plate or the blocking element is located near the transverse axes of the rod extensions.

The present invention has for its object to provide a support structure for in particular as a hollow body aufspannbares sheet material of the type mentioned, in which the interior of the hollow body not by a central support and / or spreader bars or the like is limited. The support structure should be feasible with uncomplicated means, be easy to use and be able to make the hollow body variable, in particular with regard to its height / width ratio.

This object is achieved for the support structure of the aforementioned type with the features of claim 1.

Assuming that the rod extensions on the at least one central holding element, to which they are pivotally hinged about a respective transverse axis, are jointly locked so that they are not in the locked state, at least in a pivoting direction about the transverse axes, the holding element does not need its turn to be locked to a stationary element to set the rod extensions and keep the elastic rods stretched. The pivoting direction, in which the rod extensions can be locked at any rate, is the direction in which the tensioned rods push the rod extensions. It can therefore the rod extensions and with them the rods that are inserted into it, are locked together by the holding element and not only by a connection of the holding member with a stationary element of the support structure. Consequently, no rod-shaped support needs to be provided. Rather, the interior of the support structure can be kept free of a rod-shaped or other holder. The holding element according to the invention, on which the rod extensions are pivotally hinged and lockable, can be supplemented for clamping an approximately spherical or balloon-shaped hollow body with a second holding element, which is arranged coaxially to the first holding member and hinged to the rod extensions are also pivotable and lockable. On the other hand, in other applications, such as a dome tent, only one central upper holding element may be sufficient, where the substantially lying in a plane ends of the rods are pivotally articulated by means of the associated rod extensions and can be locked, so that the rod extensions can not be pivoted about the transverse axes in any case in a pivoting direction. In this case, a foot can be mounted non-rotatably on each of a lower end of one of the rods, on which the support structure of the tent can be supported. Such a dome tent can be stretched flat by joint release of the rods on the support member and stacked space-saving in this compact form, transported and stored.

According to the invention, the rod extensions have a curved contact piece which is suitable for supporting a bent or tensioned rod end, in order to avoid its bending at the rod extension.

Advantageous embodiments of the support structure according to the invention are specified in the subclaims.

In accordance with claim 2, the retaining element for central locking or for central release of the rod extensions is made compact in that in the holding element, a flat locking element is arranged centrally inside and that the rod extensions are mounted in the holding element in a radially outer region and radially inwardly towards protrude the locking element, where they rest in the locked state on a support surface on a lower side or an upper side of the locking element. Thus, all rod extensions or rods can be easily solved together by the blocking element is brought into a corresponding position.

For compact design of the retaining element is further provided according to claim 3, that the holding element is designed as a support disc and that in the retaining disc as a blocking element, a locking disc with the support surface, on which the rod extensions are supported, is rotatably mounted. The rotatable bearing can have the following functions:

If according to claim 4, the support disc has inclined bottom portions below inner portions of the rod extensions and the support surface on the underside of the locking disc is correspondingly tapered and the locking disc by turning e.g. is adjustable in height in a thread of the support disc, the elastic rods in locked position, in which the support surface is lowered on the underside of the locking disc to the inclined bottom portions including the rod extensions, can be locked. In contrast, if the support surface on the underside of the locking disc is removed by turning the locking disc in the thread of the inclined bottom portions of the support disc, the rod extensions are solved.

The locking disc can be easily operated from above or below by means of at least one hand adjuster, which protrudes from the retaining disc on the locking disc, according to claim 5, i. to be turned around.

The mounting plate can be uncomplicated and robust a substantially solid plate according to claim 6, which is radially slotted for receiving the rod extensions. In this case, further form elements of the holding element can be easily formed from the mounting plate or plate, in particular according to claim 7, a central threaded hole, in which the locking disc is height adjustable.

However, a compact mounting disc in which the rod extensions are hinged near a peripheral wall, but can also for the locking and releasing the rod extensions according to claim 8 at the upper portion the retaining disc a locking plate to be rotatably mounted, which has radial cuts, such that the rod extensions in an open rotational position of the locking plate pass through the incisions and abut in a blocking rotational position of the locking plate thereto.

Particularly advantageous according to claim 9, the holding element comprises an annular support disc, in which the rod extensions are hinged and in which more centrally inside an inner disc height adjustable is arranged so that it can be partially unscrewed down from the annular support disc. In this case, the locking plate, which may be formed as indicated above, rotatably supported in an upper portion of the inner pane. The height adjustability of the inner disk can be easily realized with an external thread, which engages in an internal thread in the annular retaining disk. This makes it possible to achieve a particularly large adjustment range of the rod extensions at the ends of the elastic rods.

To simplify operation, in particular for joint rapid release of the rod extensions, the locking plate of the support member of the support structure according to claim 10 is biased by a spring with respect to the inner pane. The lock plate can be locked by applying the rod extensions to her, which is done by the prestressed elastic rods. The locking can be solved by manual axial displacement of the support disk or the inner disk, so that the rod extensions no longer rest against the locking plate. As a result, the locking plate can be automatically rotated by the tensioned spring in the open position.

The spring may be biased by at least one handle member, i. be rotated into the blocking position, wherein the gripping element is preferably arranged eccentrically on the locking plate.

However, the gripping element or a manual adjuster can also be arranged centrally on the side of the retaining element facing away from the retaining disk or the inner disk, in particular under the retaining disk or inner disk, and act essentially the same as the above first actuating element.

In a compact, protected embodiment, the spring loading the blocking plate may be a torsion spring, which is arranged in a central hub in the holding plate and, on the one hand, communicates with the hub and, on the other hand, with the blocking plate via a connecting element.

Alternatively, however, it may be expedient for the spring to be a steel spring arranged in a decentralized or eccentric recess in the retaining disk, which on the one hand acts on the retaining disk and on the other hand possibly via a connecting element on the locking plate.

In the latter configuration, a passage may be provided in the retainer disk or in the central hub in the retainer disk, which may in particular receive a cable gland of a lamp provided with the support structure. In other applications, for example, another fastener can be used in the passage.

In order to give the hollow body with the support structure the desired shape, with a compact flat mounting disc, the rod extensions preferably according to claim 11, two mutually angled legs, of which a first of the leg is connected to a rod end of the elastic rods and a second of the two legs in the holding element or the mounting plate can be fixed, or is releasable. The first leg with the connected rod end protrudes from the holding element, or the mounting plate out. The second leg, which can be fixed or released, can protrude in the released state from the retaining element or the retaining disk and in particular from the radial portions of the locking plate, which is a part of the retaining element as described above.

For a stable support structure, in each case an end section of one of the rods in one of the rod extensions according to claim 12 is mounted non-rotatably.

For this purpose, the end portions of the rods expediently square cross-sections.

In the application of the support structure for a lower open hollow body, in particular a dome tent, a lower rod end of the rods is attached to a foot non-rotatably.

If a stop is arranged in the pivoting region of the rod extensions on the retaining disk for each rod extension, the relatively relaxed end position of the rods is defined and by the remaining tension in the rods, the supporting structure can remain a coherent unit.

In a hollow body of clamped sheet material of a support structure having a spacer of resilient material between an upper or a lower portion of the support structure and an adjacent portion of the sheet material is achieved that the clamping of the support structure is reinforced, resulting in an aesthetic design of the supported material can support.

Figur 1

eine erste Ausführungsform des Halteelements in einer Draufsicht,

Figur 2

die erste Ausführungsform gemäß Figur 1 in einem Längsschnitt in der Schnittebene A-A,

Figur 3

eine zweite Ausführungsform des Halteelements in einem Längsschnitt entsprechend Figur 2,

Figur 3a

eine erste Variante der zweiten Ausführungsform in einer Draufsicht in arretiertem Zustand,

Figur 3b

die erste Variante gemäß Figur 3a in Draufsicht, jedoch in entspanntem Zustand,

Figur 3c

eine zweite Variante der zweiten Ausführungsform in einer Draufsicht in arretiertem Zustand,

Figur 3d

die zweite Variante gemäß Figur 3c in Draufsicht, jedoch in entspanntem Zustand,

Figur 4

eine dritte Ausführungsform des Halteelements in einem Längsschnitt entsprechend den Figuren 2 und 3 in arretiertem Zustand von Stäben beziehungsweise Stabverlängerungen,

Figur 5

die dritte Ausführungsform gemäß Figur 4 jedoch in entspanntem Zustand der Stabverlängerungen beziehungsweise Stäbe, ebenfalls in einem Längsschnitt,

Figur 6

die dritte Ausführungsform des Halteelements in entspanntem Zustand der Stabverlängerungen beziehungsweise Stäbe, entsprechend Figur 5, jedoch mit einer abgesenkten Innenscheibe,

Figur 7

eine erste Ausführungsform eines Endabschnitts eines der Stäbe in schaubildlicher Darstellung,

Figur 8

eine zweite Ausführungsform eines Endabschnitts eines der Stäbe in schaubildlicher Darstellung,

Figur 9

einen Endabschnitt eines der Stäbe, der an einem Fuß angebracht ist und

Figur 10

eine Ausführungsform eines Hohlkörpers aus aufgespanntem flächigen Material mit einer Tragekonstruktion.

The invention is explained below with reference to a drawing, in the figures embodiments are shown, from which further details may result. Show it:

FIG. 1

a first embodiment of the retaining element in a plan view,

FIG. 2

the first embodiment according to FIG. 1 in a longitudinal section in the sectional plane AA,

FIG. 3

a second embodiment of the retaining element in a longitudinal section accordingly FIG. 2 .

FIG. 3a

a first variant of the second embodiment in a plan view in the locked state,

FIG. 3b

the first variant according to FIG. 3a in plan view, but in a relaxed state,

Figure 3c

a second variant of the second embodiment in a plan view in the locked state,

3d figure

the second variant according to Figure 3c in plan view, but in a relaxed state,

FIG. 4

a third embodiment of the holding element in a longitudinal section corresponding to Figures 2 and 3 in the locked state of bars or bar extensions,

FIG. 5

the third embodiment according to FIG. 4 However, in a relaxed state of the rod extensions or rods, also in a longitudinal section,

FIG. 6

the third embodiment of the retaining element in the relaxed state of the rod extensions or rods, respectively FIG. 5 but with a lowered inner pane,

FIG. 7

a first embodiment of an end portion of one of the bars in perspective view,

FIG. 8

a second embodiment of an end portion of one of the rods in perspective view,

FIG. 9

an end portion of one of the rods attached to a foot and

FIG. 10

an embodiment of a hollow body of clamped sheet material with a support structure.

In FIG. 1 The support structure comprises six elastic rods 1 to 6, the end portions of which extend radially in a star-shaped manner to a holding element 13. The end portions of the rods 1 to 6 are non-rotatably inserted into rod extensions 7 to 12. The rod extensions may each be shorter than shown in the figures and in particular hook-shaped according to the formation of a holding element 13.

The rod ends with the rod extensions 7 - 12 are combined in the holding element 13, with which the rods can be stretched in a curved shape and locked in this or can be relaxed, the rods 1 - 6 are straight outstretched, as in FIG. 2 shown.

To form a hollow body, in particular a lampshade, two holding elements, which are formed like the holding element 13, in vertical Be spaced apart from each other. The rods 1 to 6 are for this purpose connected to aufspannbarem sheet material, which is not shown in the drawing and can be clamped, for example, to an approximately spherical shape.

But it is also possible, for example, to form a dome tent with only one support member 13, not shown lower rod ends of the rods 1 to 6, each with a foot as the foot 14 in FIG. 9 can be provided. In particular, a lower rod end 14 is non-rotatably connected to the foot 15 in order to achieve a high stability of the dome tent.

That in the Figures 1 and 2 generally designated 13 retaining element is formed in the form of a support plate 16 of a solid plate. The mounting plate has radially star-shaped slots 17 to 22, the bottom portions 29, 30, as in FIG. 2 represented, in each case obliquely downwards towards the center of the holding disk. In each case one of the slots 17 to 22 receives one of the rod extensions 7 to 12. For the pivotable mounting of the two-legged rod extensions 7 to 12, a transverse axis 23 to 28 is arranged in each of the slots, wherein the transverse axes 23 to 28 are arranged tangentially to an imaginary circle, the in FIG. 1 is shown with a broken line.

Inner sections, for example 7a, 10a of the rod extensions 7-12, extend into a central threaded hole 31 in the retaining disk 16, which receives a locking disk 32 with an unspecified external thread. The locking disc 32 has on its underside a conical support surface 33 which is formed with substantially the same inclination as the bottom portions, for example 29, 30. On its upper side, the locking disc 32 is provided with a manual adjuster 34, with which the locking disc 32 can be detected and rotated for height adjustment in the threaded hole 31.

In the in FIG. 2 illustrated position of the locking disc 32, the inner portions of the rod extensions 7 to 12 are not pivoted by the support surface 33 and are located at a clearance from the inclined bottom portions 29, 30 in a dissolved state. For clamping the rods 1 to 6, the locking disc 32 is screwed into the threaded hole 31, wherein the support surface 33, the inner portions 7a, 10a of the rod extensions 7 - 12 in the direction of the inclined bottom portions 29, 30 pivots and wherein outer legs of the rod extensions 7 to 12 can stretch the elastic rods 1 to 6. The inner portions, eg 7a, 10a of the rod extensions 7 to 12 are held in a lower end position of the locking disc 32 by the latter, wherein the inner portions 7a, 10a of the rod extensions 7 to 12 rest on inclined bottom portions, for example 29, 30.

By turning the locking disc 32, this locking position of the rod extensions 7 to 12 can be easily solved centrally, bringing the elastic rods 1 - 6 relax. The rods 1 - 6 and a flat material connected to them can be in a relaxed position, as in FIG. 2 partially shown, spread flat, whereby the relaxed support structure, for example, for transport and storage assumes a compact state.

The upper hand adjuster 34 for revealing adjustment of the locking disc 32 in addition to a lower manual adjuster 35, as in FIG. 3 is shown to a second embodiment, projecting down from the holding element.

In the FIG. 3 illustrated second embodiment of the holding member 36 differs in the following from the first embodiment according to the Figures 1 and 2 :

The holding element 36 comprises in FIG. 3 a support plate 37 in which the rod extensions, for example, 42, 43 with unsigned transverse axes, which are tangentially arranged along an imaginary circle near an unspecified peripheral wall of the support plate 37, are pivotally articulated. In an inner upper portion of the support disk 37, specifically in a central hub-shaped part 38 of the support disk, a lock plate 39 is rotatably supported. The central hub-shaped part 38 includes a torsion spring 40, which is connected via a connecting element 41 with the locking plate 39 in connection. The lock plate 39 may alternatively be rotated by the handle member 39a on the lock plate 39 or by the lower central hand adjuster 35 to tension the torsion spring 40 '.

The rod extensions mounted in the support disk 37, of which two of the diametrically opposed rod extensions which are in FIG. 3 are designated 42, 43, each have two mutually angled legs, for example 44, 45 on. The angled legs 44, 45 enclose an obtuse angle and make it possible that, with the rods attached to the rod extensions, for example 42, 43, a hollow body clamped can be more strongly arched than in the case of rectilinear alignment of the two legs. In each case an outer leg 44 of the rod extension 42 projects through an unillustrated slot in the outer peripheral side of the support disc 37 and is externally provided with a curved abutment piece 46 a, on which a rod end can be supported under tension. An inner leg, for example, 45 each passes through a slot in an inner wall 47 of the support plate 37 inwardly through, where it is at a Support surface 48a of the locking plate 39 comes into abutment when the locking plate is in the locked state. However, after the locking plate 39 is released by depressing the retaining plate 37, because the rod extensions thereof are removed as a result of changing the bending of the elastic rods, for example 1 a, 4 a, and the locking plate 39 is automatically rotated by the torsion spring 40 in its open rotational position, are the inner legs, for example, 45 of the rod extensions, for example, 42, 43 below radial incisions in the locking plate 39 so that they can pass through them upwards outside, with the elastic rods relax.

For a first variant of the second embodiment of the retaining element, the position of the locking plate 39 'in the locked state in Fig. 3a shown and their position in a dissolved state or in its open rotational position in Fig. 3b , The corresponding positions of the rod extensions of the third embodiment of the retaining element are analogous to the locked state at the positions 42, 43 in FIG. 5 and for the dissolved state at the same positions in Fig. 6 shown.

Like from the FIGS. 3a and 3b can be seen, the first variant of the second embodiment, only four rod extensions 42 ', 43', 67, 68, which are mounted at equidistant circumferential distances and non-designated transverse axes pivotally mounted on the support disc 37 '. The transverse axes are in turn arranged along a circle shown with a broken line 69.

Furthermore, in the in the FIGS. 3a, 3b illustrated first variant of the second embodiment, the torsion spring 40 'on the one hand to a connecting element 41' and on the other hand to a central hub 38 'of the mounting plate 37' attached.

When tensioning the torsion spring 40 'by means of a gripping element 39a' and tensioning the elastic rods 1 ', 2', 3 ', 4', the rod extensions 42 ', 67, 43' and 68 to pieces of equipment corresponding to the abutment pieces 48a, 48b in Fig. 3 pressed and the locking plate 39 'locked in the locked position.

To release the locking plate 39 ', the support plate 37' at the diametrically opposite pressure points 37a, 37b pressed down, whereby the voltage applied to the support disc rod extensions 42 ', 43', 67, 68 are separated from the contact pieces of the locking plate 39 ', which is why by the relaxing torsion spring 40 'in the in Fig. 3b shown open position in which when releasing the support disc 37 ', the legs of the rod extensions 42', 43 ', 67, 68 by radial cuts 70, 71, 72, 73 of the locking plate 39' can pass through and pass when the rods to the Rod extensions 42 ', 43', 67, 68 are stretched.

The in the Figures 3c and 3d illustrated second variant of the second embodiment is largely consistent with the first variant of the second embodiment according to the FIGS. 3a and 3b match and is so far provided with the same reference numerals, so that can be used on the above description.

In the second variant, however, a central hub 38 "with a cylindrical, hollow, hatched passage 74 is formed, which is not occupied by a torsion spring or another part of the holding element itself, but for receiving, for example, further fasteners and preferably an electrical cable gland in the application of the support structure for clamping and holding a lampshade can serve. Therefore, instead of the central torsion spring of the first variant, a steel spring 75 in a recess 76 of the support plate 77 is arranged so that on the one hand on the support plate 77 and on the other hand - possibly via a fixed connection element 78 - on the rotatable locking plate 39 'attacks. Thus, the steel spring 75 in the same way with the locking plate 39 'cooperate as the torsion spring 40 in the first variant of the second embodiment, ie the in Fig. 3c under tension of the steel spring 75 standing lock plate 39 'in the released state from the in Fig. 3c shown locked position in the in Fig. 3d rotate shown position in which leg of the rod extensions 42 ', 43', 67, 68 can swing out through the radial cuts 70, 71, 72, 73 of the locking plate 39 ', whereby the elastic rods on the rod extensions 42', 43 ', 67 , 68 are relieved.

The third embodiment of the holding member 49 according to the FIGS. 4 to 6 differs from the second embodiment essentially in that the holding member 49 comprises an annular support disc 50 in which the rod extensions 42, 43 about transverse axes 51, 52 pivotally articulated, wherein an inner disc 53 with an external thread 54 in an internal thread 55 of the annular Retaining washer is screwed. The inner disk 53 receives in its upper portion the locking plate 39, which may be formed as in the second embodiment. As a result, the rod extensions, eg 42, 43, cooperate, as in the second embodiment, with the blocking plate 39, in particular the supporting surfaces 48a, 48b, which are arranged at the bottom of the blocking plate 39. A torsion spring 56 is arranged in a central hub-shaped part 58 of the inner disk 53, it acts like the torsion spring 40 including the locking in the second embodiment.

According to the FIGS. 4 to 6 For example, the torsion spring 56 which engages the lock plate 39 can be tensioned from above by a handle member 39a or from below by a lower actuator 60 by turning the lock plate 39 to the lock rotational position and being locked, with the inner legs not designated the rod extensions 42, 43 abut from below on the support surfaces 48a and 48b.

The locking of the torsion spring 56 can by pressure on the support plate 37, for example, pressure points analogous to the pressure points 37 a, b in Fig. 3a - 3d be solved from above. The torsion spring 56 is previously stretched either by the lower actuator 60 or the actuator 39a on top of the lock plate 39, wherein the lock plate 39 in the lock rotational position according to FIG. 4 arrives.

In the FIGS. 5 and 6 shown positions of the rod extensions 42, 43, the locking plate 39 is in the open rotational position, so that the rod extensions 42, 43 upwards by radial cuts in the locking plate 39 and slots in an outer portion of the inner pane 53 and in the annular support plate 50 from the holding element 49 can pivot upwards, whereby the rods relax with the rod ends, eg 1a and 4a and no longer abut against the abutment pieces 46a, 46b.

Due to the height adjustability of the inner disk 53 in the annular hollow support disk 50, which in FIG. 6 is shown, there is a particularly large adjustment of the rods, for example, 1 and 4, and thus a further design possibility of the hollow body, which can be clamped with the elastic rods, for example, 1 and 4.

In the FIGS. 7 and 8 FIG. 3 illustrates how end portions 62 and 63, respectively, are preferably disposed in outer portions of bar extensions 64,65 so that end portions 62,63 can not be twisted in bar extensions 64,65. For this purpose, the end portion 62 in FIG. 7 square cross sections. For round cross sections such as those of the end portion 63 in FIG. 8 prevents a cross pin 66 through the end portion a rotation.

Also, the lower bar end 14 with square cross-sections according to FIG. 9 is non-rotatably mounted on the foot 15 to serve for stably setting up, for example, a dome tent.

In FIG. 10 For example, the shape of a hollow body 79 is determined by a spacer 81 of resilient material, other than a supporting structure generally indicated at 80, which is here realized as a helical compression spring. How out FIG. 10 can be seen, the spring is formed substantially helically. It rests with an upper annular end 82 on the inside at a lower approximately spherical portion 83 of the tensioned support structure 80 and with a lower annular end 84 at a lower, optionally reinforced end of a substantially frusto-conical portion 85 of the clamped sheet material 86, which tightens overall takes the form of a balloon. Retaining elements of the support structure, which may be formed in principle as the retaining elements described above, are designated 87, 88.

LIST OF REFERENCE NUMBERS

1

Rod

1'

Rod

1a

rod end

2

Rod

2 '

Rod

3

Rod

3 '

Rod

4

Rod

4 '

Rod

4a

rod end

5

Rod

6

Rod

7

rod extension

7a

inner section

8th

rod extension

9

rod extension

10

rod extension

10a

inner section

11 1

rod extension

12

rod extension

13

retaining element

14

lower end of the bar

15

foot

16

support disc

17

slot

18

slot

19

slot

20

slot

21

slot

22

slot

23

transverse axis

24

transverse axis

25

transverse axis

26

transverse axis

27

transverse axis

28

transverse axis

29

bottom section

30

bottom section

31

threaded hole

32

locking disc

33

conical support surface

34

Manual adjuster

35

Manual adjuster

36

retaining element

36 '

retaining element

36 "

retaining element

37

support disc

37 '

support disc

37a

bruise

37b

bruise

38

central hub (in the mounting disc)

38 '

central hub (in the mounting disc)

38 "

central hub (in the mounting disc)

39

locking plate

39 '

locking plate

39a

handle element

39a '

handle element

39b

handle element

40

torsion spring

40 '

torsion spring

41

connecting element

41 '

connecting element

42

rod extension

42 '

rod extension

43

rod extension

43 '

rod extension

44

Thigh (outer)

45

Thigh (inner)

46a

pad

46b

pad

47

inner wall

48a

support surface

48b

support surface

49

retaining element

50

annular retaining disc

51

transverse axis

52

transverse axis

53

inner pane

54

external thread

55

inner thread

56

torsion spring

57

attack

58

central hub-shaped part of the inner pane

59

connecting element

60

lower handle element

61

attack

62

end

63

end

64

rod extension

65

rod extension

66

cross bolt

67

rod extension

68

rod extension

69

Line of the transverse axis arrangement

70

radial incision

71

radial incision

72

radial incision

73

radial incision

74

passage

75

steel spring

76

recess

77

support disc

78

connecting element

79

hollow body

80

supporting structure

81

spacer

82

upper end of the spacer

83

lower section of the support structure

84

lower end of the spacer

85

lower portion of the sheet material

86

flat material

87

retaining element

88

retaining element

Claims (12)

Carrying construction for in particular as a hollow body aufspannbares sheet material, with elastic rods (1 - 6, 1 '- 4') as lockable and releasable clamping means which are suitable to open in the locked state, the sheet material, and in particular at least partially enclosed by the sheet material are, wherein at substantially lying in a plane ends of the rods (1-6, 1 '- 4') rod extensions (7 - 12, 42, 42 ', 43, 43', 64, 65, 67, 68) are mounted which are articulated on at least one central holding element (13, 36, 36 ', 36 ", 49) in an annular arrangement spaced apart from one another by a respective transverse axis (23 - 28, 51, 52),
wherein the rod extensions (7 - 12, 42, 42 ', 43, 43', 64, 65, 67, 68) on the at least one holding element (13, 36, 36 ', 36 ", 49) are jointly lockable in such a way that in the locked state, they are not pivotable about the transverse axes (23-28, 51, 52) in any pivoting direction,
characterized,
that the bar extensions (42, 43) each have a curved pad (46a, 46b) have, which is adapted to support a curved rod end (1a, 4a). Carrying structure according to claim 1,
characterized,
in that in the at least one holding element (13, 36, 36 ', 36 ", 49) a flat blocking element (32, 39, 39') is arranged centrally inside and
in that the rod extensions (7-12, 42, 42 ', 43, 43', 67, 68) are mounted in the retaining element (13, 36, 36 ', 36 ", 49) in a radially outer region, radially inwards the locking element (32, 39, 39 ') protrude and rest in the locked state on a support surface on a bottom or an upper side of the locking element (32, 39, 39'). Carrying structure according to claim 1 or 2,
characterized,
that the retaining element (13) is designed as a retaining disk (16) and
that in the retaining disc (16) as a blocking element a locking disc (32) with the support surface (33) on which the rod extensions (7-12) can be supported, is rotatably mounted. Carrying structure according to claim 3,
characterized,
in that the retaining disk (16) has inclined bottom sections (29, 30) under inner sections (7a, 10a) of the rod extensions (7-12),
that the support surface (33) is tapered on the underside of the locking disc (32) and
that the locking disc (32) is height adjustable. Support structure according to claim 3 or 4,
characterized,
in that at least one manual adjuster (34), which protrudes from the retaining disk (16) over the locking disk (32), is connected to the locking disk (32). Support structure according to claim 4 or 5,
characterized,
in that the retaining disc (16, 37, 37 ', 77) is a substantially solid plate, which is radially slotted to receive the rod extensions (7 - 12, 42, 42', 43, 43 ', 67, 68). Carrying structure according to claim 6,
characterized,
in that the retaining disk (16) is provided with a central threaded hole (31) in which the locking disk (32) can be adjusted in height. Carrying structure according to claim 6,
characterized,
that at a top portion of the support disc (37, 37 ', 77) a lock plate (39) is rotatably mounted coaxially with a central hub (38) in the support disc, and
in that the blocking plate (39, 39 ') has radial cuts (70-73), such that the bar extensions (42, 42', 43, 43 ', 67, 68) are suitable in an open rotational position of the blocking plate (39, 39 ') through the incisions (70 - 73) to pass and in a blocking rotational position of the locking plate (39, 39') abut against this. Carrying structure according to one of claims 1 - 3,
characterized,
in that the retaining element comprises an annular retaining disk (50),
in that the rod-shaped extensions (42, 43) are articulated in the annular retaining disk (50),
in that an inner disk (53) is arranged so that it can be adjusted in height in the annular retaining disk (50),
that it is partially rotatable downwards from the annular support disc (50), and
in that on an upper portion of the inner disk (53) is rotatably mounted a locking plate (39) having radial cuts, such that the rod extensions (42, 43) are adapted to pass through the cuts in an open rotational position of the locking plate (39) and in a blocking rotational position of the locking plate (39) abut against this. Carrying structure according to claim 8 or 9,
characterized,
in that the blocking plate (39, 39 ') is pretensioned by a spring (40, 56, 75) with respect to the holding plate (37, 37', 77) or the inner plate (53),
that the locking plate (39, 39 ') in locking position by conditioning the rod extensions (42, 42', 43, 43 ', 67, 68) by means of the elastic rods (1-6, 1' - 4 ') can be locked and
in that the locking plate (39, 39 ') is detachable from the rod extensions (42, 43) by manual axial displacement of the support disc (37, 37') and the inner disc (53), respectively, and by the spring (40, 56, 75) in Open position is rotatable. Carrying structure according to one of the preceding claims,
characterized,
that the bar extensions (42, 43, 42 ', 43', 67, 68) each have two mutually angled legs (44, 45), of which in each case a first of the legs (44) is connected to a bar end (1a, 4a) and a second of the two legs (45) is fixable in the holding element (13, 36, 36 ', 49) or is detachable and pivotable. Carrying structure according to one of the preceding claims,
characterized,
in that in each case one end section (62, 63) of one of the bars (1-6, 1 '- 4') is non-rotatably mounted in one of the bar extensions (64, 65).

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