EP3838353A1 - Foldable trampoline, method of folding a trampoline and method for tensioning a rescue net - Google Patents

Abstract

The invention relates to a foldable trampoline (1), having at least three posts (2) which are arranged parallel to one another and to a vertical direction V, a jumping sheet (8) being stretched between the at least three posts (2), at least three stiffening struts (5) which each connect a different pair of posts (2) adjacent to each other in a circumferential direction U of the trampoline (1) and stabilize these posts (2) in a horizontal direction H, each stiffening strut (5) on both in The post (2) adjacent to the circumferential direction U is hinged and has at least one central joint (5.1) which is provided in a central area B1 of the stiffening strut (5), all posts (2) adjacent to the circumferential direction U for folding in the trampoline (1) are movable towards each other.

Description

The invention relates to a foldable trampoline, having at least three posts which are arranged parallel to one another and to a vertical direction, a jumping mat being stretched between the at least three parallel posts, at least three stiffening struts, each with a different pair of in a circumferential direction Connect the posts adjacent to the trampoline and stabilize these posts in a horizontal direction.

The invention also relates to a method for unfolding a foldable trampoline.

The invention also relates to a method for tensioning a jumping mat of a foldable trampoline.

There is already a trampoline out of the CN 103432710 B known, which has six parallel posts, between which six stiffening struts are provided. Two of the stiffening struts have hinges. Furthermore, six safety bars are provided, two of which have hinges.

The invention is based on the object of designing and arranging a foldable trampoline in such a way that it can be stored in as little space as possible and, at the same time, is as stable as possible when jumping.

The object is achieved according to the invention in that each stiffening strut is hingedly mounted on two posts that are adjacent in the circumferential direction and has at least one central joint which is provided in a central region of the reinforcing strut, with all posts that are adjacent in the circumferential direction being movable towards one another in order to fold the trampoline. A stiffening strut can be provided between each pair of posts that are adjacent in the circumferential direction.

The foldable trampoline can be folded in and out. When folded, its footprint is greatly reduced. In this respect, it takes up little space and can be stored in a space-saving manner. With this storage it can stand on the post. When folded out, the area of the foldable trampoline is maximized. The base area is then at least as large as the area of the stretched jumping mat. With the maximum jumping area in the vertical direction above the jumping mat, the trampoline offers sufficient space for jumping.

The trampoline has at least three parallel posts. It can also have four, five, six, seven, eight or more than eight posts. At least three posts are required to stretch the jumping mat in one plane and to form the jumping area. If there are exactly three posts, the posts form the corners of a triangle in a plan view of the trampoline against the vertical direction. The more posts are provided, the more corners of a geometric shape these posts form in the top view, the geometric shape then increasingly approximating a circle. Another advantage of a higher number of posts is that the more posts are provided, the greater the stability of the trampoline. The more posts there are, the larger the diameter of the jumping mat can be. A larger jumping mat can have the advantage that it increases the jumping power.

The posts can each have one, two or more than two wheels, which enable the posts to be rolled in a horizontal direction H while standing on the ground. The wheels can each have a parking brake that prevents rotation.

The posts may have a base to which the wheels are attached. The base is axially wider than the other post, so that there is space for at least two wheels. The rod can have a foot which is V-shaped in cross section and which can be attached to the post and in particular to the base. Both measures lead to additional stability of the trampoline. The posts define a central axis of the Trampolines. The central axis is parallel to the posts and to the vertical direction. The central axis lies between the posts and is equidistant from each post in a horizontal direction. The circumferential direction runs around the central axis in a horizontal plane.

The jumping mat itself is stretched so elastically and / or so elastically over an elastic element that it enables a typical use of the trampoline. The jumping power of a user of the trampoline can thus be reliably increased. Furthermore, the jumping mat is made of a stable material. In this respect, it ensures safe trampoline operation, in which the user does not have to fear that the jumping mat will tear or be damaged while jumping, even when jumping for a long time.

The stiffening struts each connect two posts that are adjacent in the circumferential direction. The stiffening struts can be arranged parallel to a horizontal direction. Adjacent posts are seen in the circumferential direction side by side and the stiffening struts run in the plan view opposite to the vertical direction of the trampoline on the edge of the trampoline and do not cross the surface that forms the trampoline in this plan view. The stiffening struts secure the trampoline in the horizontal direction so that the distance between two posts that are adjacent in the circumferential direction remains constant when the trampoline is unfolded. The distance between opposite posts also remains constant. This gives the trampoline the necessary stability. The jumping sheet can be attached partially or exclusively to the stiffening struts. The stiffening struts can also be rounded so that they each form an arc of a circle when viewed from above against the vertical direction and together form a circle.

The stiffening struts can be hinged at their ends on the corresponding post via post joints. Hinges can be used as post joints. In this respect, the stiffening strut has a post joint at its first end or first end area and at its second end or second end area. Extends between the two ends or end regions the middle area. At least one central joint is provided in the central area of a stiffening strut. Two, three or more than three central joints can also be provided in the central area.

If the trampoline is folded in, the foldable mounting of a stiffening strut on the adjacent post and the at least one central joint in the central area enable each stiffening strut to be folded up.

If exactly one central joint is provided in the central area, this can separate the stiffening strut into two equally long sections. When folding in, both sections fold towards the post. An interior angle that lies between a section and a post is reduced. In addition, the two sections fold towards each other. In this sense, an interior angle formed between the two sections is also reduced. The central joint can move in or against the vertical direction when it is folded.

Before folding in, ie with the unfolded trampoline, all posts are parallel to each other and to the vertical direction V. When folding, the posts move in a horizontal direction. Thus, the distance between two posts lying next to one another in the circumferential direction is reduced. This applies to all neighboring pairs of posts. In this sense, the posts move towards a center that lies between the posts and the central axis. The distance between the individual posts is therefore reduced accordingly when it is folded in, and in particular the distance between opposing posts is also reduced. After folding in, i.e. with the folded trampoline, the posts are parallel to each other and to the vertical direction V.

The trampoline can also be folded out. When the trampoline is unfolded, the posts move away from each other in a horizontal direction. The movement that the posts make when they are folded is reversed when they are unfolded.

The posts can be covered at least partially with a foam cover that protects the user from injuries. The stiffening struts can be covered at least partially or completely with a foam cover that protects the user from injuries.

In the unfolded state, the smallest angle β between a stiffening strut and a post is 90 °. In the folded state, the smallest angle β between a stiffening strut and the post is less than 45 °, 20 °, 10 ° or 5 °. It can also be 0 °. The smaller the angle, the more compact the trampoline.

Furthermore, the object is achieved according to the invention in that the second cable pull system is operated and at least indirectly causes the central joints of the stiffening struts and / or the central joints of the securing rods and / or the rods to collapse, with all posts adjacent in the circumferential direction moving towards one another.

This procedure makes it as easy to fold as possible. The corresponding cable pull system can be operated centrally by the user. It is also possible to provide a motor or a crank to operate the folding.

At the same time, the object is achieved according to the invention in that the jumping sheet is tensioned via the separate tensioning device during or after the folding out of the foldable trampoline.

The tensioning device makes it easier to tension the jumping mat and enables it to be tensioned as much as possible. The clamping device can be designed as a separate crank or the like. The crank can be operated while or after unfolding the trampoline. The tensioning device can also be part of the second cable pull system, which drives the unfolding of the trampoline at the same time. Such a tensioning device is dependent on the unfolding process of the trampoline.

It can also be advantageous for this purpose if a central joint and at least two rods are provided, each rod connecting a corresponding post to the central joint and being hingedly mounted both on the corresponding post and on the central joint. A bar can be provided for each post.

The combination of central joint and rods described under this aspect gives the trampoline additional stability. In the unfolded state, the combination prevents relative movement of the posts, in particular in a horizontal direction. Particular stability results if a rod is provided on at least three other posts.

The foldable mounting is achieved by means of edge joints on the central joint and the post. These joints can in particular be hinges. In this case, a joint securing device can be provided on the edge joint on the central joint and / or on the edge joint on the post, which prevents the unintentional folding in or out by preventing movement of the joint.

The central joint is in a horizontal plane between the posts. The central joint can lie on the central axis. The rods can be parallel to the horizontal direction, then rods and central joint lie in the horizontal plane.

If the trampoline is folded in, the bars with the corresponding post form a smallest angle γ less than 5 °, 10 °, 20 °, 30 °, 40 ° or 50 °. In particular, the rods can be employed in the vertical direction. In other words, the bars can be folded up. When the trampoline is unfolded, the smallest angle γ is greater than 50 °, 60 °, 70 ° or 85 ° or it is 90 °.

A cover can be provided on the central joint which has a structure such that it protects the jumping bed from injuries in the folded-in state. This cover can be a section from an exercise ball.

Two or more than two central joints can also be provided, the preceding then applies accordingly. The rods are then assigned to the corresponding central joint.

Furthermore, it can be advantageous if the jumping bed is stretched by means of at least one elastic element, the elastic element being attached to at least one post and / or to at least one stiffening strut.

The elastic element can be a single cable or a spring. If the elastic element is a spring, a large number of elastic elements must be provided. The use of at least one elastic element can additionally improve the reinforcement of the jumping force. In addition, the material for the jumping sheet can also be chosen more freely, since the jumping sheet alone does not have to provide the elasticity for the jumping force reinforcement.

According to a further aspect, a protective cover can be provided in order to cover the at least one elastic element and thus reduce the risk of injury. Furthermore, holding means can be provided on the stiffening struts and / or the tensioning cloth and holding elements can be provided on the cover, which form the counterparts to the holding means, the cover being releasably fixable via the holding elements and the holding means on the reinforcing struts and / or on the tensioning sheet . The holding means can be designed as buttons and / or buttonholes. The holding elements can be designed as buttons and / or buttonholes. The holding means and elements can also jointly form a push button. The cover can be attached to a protective net. By removing the protective cover, the trampoline can be folded up more compactly.

It can also be advantageous if the central joint and the stretched jumping sheet have a shortest distance a in the vertical direction, where a> = 20, 30, 40 or 50 cm.

Since the jumping mat is deflected in or against the vertical direction during jumping operation, it is advantageous to use the shortest distance a sufficient should be chosen large so that the greatest possible deflection in or against the vertical direction is possible without the jumping sheet touching the central joint or the bars.

The shortest distance a in the vertical direction is the smallest distance that exists in the vertical direction between the jumping sheet and the central joint. The shortest distance a is the smallest possible distance between the jumping sheet and the central joint in this direction.

The shortest distance a is determined when the jumping mat is stretched. It is thus determined when the trampoline is fully unfolded. Furthermore, it must be determined if the jumping mat is not deflected in or against the vertical direction by the user's jumping operation.

It can advantageously be provided that at least three securing rods are provided, each connecting a different pair of adjacent posts to each other and stabilizing the posts in a horizontal direction, each securing rod being hinged on the corresponding post and having at least one central joint that is in one middle area of the safety bar is provided and is used to fold the trampoline. A securing rod can be provided between each pair of posts that are adjacent in the circumferential direction. The securing rods can also be rounded so that they each form an arc of a circle when viewed from above against the vertical direction and together form a circle.

The safety bars additionally stiffen the trampoline and give it additional stability. The safety bars can be covered with a foam cover that protects the user from injury. A protective net can be stretched between the safety bars and the stiffening struts, which prevents the user from unintentionally jumping out of the jumping area above the jumping mat. The protective net is not essential for the trampoline to function.

It can also be advantageous if the at least three posts have an upper section and a lower section, the upper section in FIG the vertical direction V is arranged above the lower section, wherein a section joint is provided, via which the upper section can be pivoted with respect to the lower section. Each post can have a respective top section, bottom section, and section hinge.

When the trampoline is unfolded, the upper section and the lower section are coaxial. A smallest angle α between the upper and lower section is 180 °. The section joint is then unfolded. When the trampoline is folded in, the upper section and the lower section form a smallest angle α of less than 180 ° and are not coaxial. The system can be designed in such a way that a smallest angle α of less than 45 °, 20 °, 10 ° or 5 ° is possible. The smallest angle can particularly preferably be 0 °. The section hinge is then folded in. With the folded trampoline, the height is reduced compared to the unfolded trampoline and the trampoline requires less space for storage.

The safety bars can be supported on the upper section. The stiffening struts can be mounted on the middle section. The base can be provided counter to the vertical direction V below the lower section.

It can be of particular importance for the present invention if a jumping area is provided for the user in the vertical direction above the jumping sheet, the central joint being provided opposite the vertical direction below the jumping sheet and / or the safety bars being provided in the vertical direction above the jumping sheet .

The arrangement described under this aspect enables additional stability of the trampoline and the attachment of the protective net.

In connection with the design and arrangement according to the invention, it can be advantageous if a separate tensioning device is provided for tensioning the jumping mat, the tensioning device acting independently and / or depending on the unfolding of the trampoline.

The tensioning device makes it easier to unfold the trampoline and tension the jumping mat and enables particularly strong tensioning.

A tensioning device is dependent on unfolding if the tensioning device is mandatory when unfolding. In this sense, the tensioning device can interact with a first cable pull system which can also drive the trampoline to unfold.

A tensioning device is independent of the unfolding if it does not necessarily work when it is unfolded and can also be operated after it has been unfolded. The clamping device can be designed as a separate crank or the like. The crank can be operated while or after unfolding the trampoline.

A safety tensioning cable can be provided that is connected to the tensioning device and that is guided in particular through the stiffening struts and / or safety rods. The safety tension cable can be designed as a steel cable. By tensioning the safety tensioning cable by means of the tensioning device, the stiffening struts and / or safety rods are unfolded and thereby tension the jumping sheet. At the same time, the clamping device secures the joints.

It can furthermore be advantageous if joint securing devices are provided on the central joints of the stiffening struts and / or the securing rods in order to fix the central joints. Joint securing devices can also be provided on the post joints, the section joints and / or the edge joints.

The joints can be locked when the trampoline is unfolded. The locking then gives the trampoline additional stability. In particular, during jumping operation, this prevents the joints from inadvertently collapsing due to the forces that also act on the jumping mat and a relative movement between the posts. The joints can be locked when the trampoline is folded in, so that the trampoline is prevented from unfolding unintentionally It can be advantageous if a tensioner, in particular designed for a motor or a crank, is provided for operating at least part of the folding-in movement and / or the unfolding movement.

The corresponding movement can be facilitated by using a tensioner. By using a motor, the execution of the folding and / or unfolding movement can be automated. The motor can be provided on the central joint. In order to bring about the corresponding movement, the motor can be connected to a first cable pull system and / or a second cable pull system that can drive the folding in of the trampoline.

In addition, it can be advantageous if a first cable system is provided, via which the trampoline can be unfolded, and / or a second cable system is provided, via which the trampoline can be folded in.

This means that folding in or unfolding is as simple as possible. The corresponding cable pull system can be operated centrally by the user. The corresponding cable system can be designed as a steel cable. A tensioner can be provided for the corresponding cable pull system, which operates the folding in and / or unfolding and is connected to the corresponding cable pull system. The tensioner can be designed as a motor.

Furthermore, it can be advantageous if the first cable system and / or the second cable system are at least partially guided within a post and / or a rod and / or a safety bar.

In this way, a large part of the first and / or second cable system can be hidden within the post and / or the rod and / or the safety bar and shielded from the user. This is advantageous for the safety of the user, since the possibility of threading oneself into the cable pull system and thus injuring oneself is reduced.

It can be advantageous if at least one guide element is movably mounted in a bearing device within a post and / or a rod and / or a safety bar, the first cable system and / or the second cable system being guided over the guide element or on the guide element are fixed.

Due to the deflection of the guide element, when the trampoline is unfolded, a larger section of the second cable can be stored within the post and / or the rod and / or the safety bar, which additionally increases the safety of the user. When the trampoline is unfolded, the second cable system is under tension. Thus, it deflects the guide system in the bearing device, insofar as the guide system moves out of the rest position against the force of the restoring element. The same applies to the second cable pull system when the cable pull system is folded in.

Since radial forces that act on the guide element can occur when the guide element is deflected, the width of the post can be reinforced at least in the area of the bearing device. The post can have an oval cross-section.

In addition, a restoring element can be provided which pulls the guide element into a rest position and the application of a force to the cable pull system deflects the guide element out of the rest position.

It can also be advantageous if the second cable system is operated and at least indirectly causes the upper section and the lower section of the posts of the unfolded trampoline to be pivoted from a coaxial position into a position in which they have a smallest angle α less than 180 ° , 90 °, 45 °, 20 °, 10 ° or 5 °. The smallest angle α can particularly preferably be 0 °.

Folding in the sections makes the trampoline smaller.

Figur 1

eine Perspektive eines klappbaren Trampolins;

Figur 2

eine Frontansicht zweier benachbarter Pfosten mit Schutznetz;

Figur 3

eine Frontansicht einer Versteifungsstrebe mit einem Gelenk;

Figur 4

eine Frontansicht einer Versteifungsstrebe mit zwei Gelenken;

Figur 5a

eine Draufsicht auf das Trampolin im ausgeklappten Zustand;

Figur 5b

eine Draufsicht auf das Trampolin im eingeklappten Zustand;

Figur 6a

eine Frontansicht auf zwei Pfosten eines ausgeklappten Trampolins;

Figur 6b

eine Frontansicht auf zwei Pfosten eines eingeklappten Trampolins;

Figur 7

eine Ausführungsform eines Pfostens mit zwei Rädern;

Figur 8

eine Ausführungsform einer Stange mit V-förmigem Fuß;

Figur 9a

einen Schnitt durch einen Pfosten mit beweglich gelagertem Führungselement eines ausgeklappten Trampolins;

Figur 9b

einen Schnitt durch einen Pfosten mit beweglich gelagertem Führungselement eines eingeklappten Trampolins;

Figur 10a

einen Schnitt durch einen Pfosten mit alternativer Ausführungsform eines Führungselements eines ausgeklappten Trampolins;

Figur 10b

einen Schnitt durch einen Pfosten mit alternativer Ausführungsform eines eingeklappten Trampolins;

Figur 10c

einen Querschnitt eines verstärkten Pfostens im Bereichs eines Schlitzes;

Figur 11a

eine Frontansicht eines Pfosten mit alternativer Ausführungsform eines ausgeklappten Trampolins

Figur 11b

eine Frontansicht eines Pfosten mit alternativer Ausführungsform eines eingeklappten Trampolins;

Figur 12

eine Draufsicht auf eine Schutzabdeckung;

Figur 13

eine Frontansicht eines Schutznetzes mit einer Schutzabdeckung und

Figur 14

eine Draufsicht auf ein Ausführungsbeispiel eines rechteeckigen Trampolins mit zwei Zentralgelenken.

Further advantages and details of the invention are explained in the patent claims and in the description and shown in the figures. It shows:

Figure 1

a perspective of a foldable trampoline;

Figure 2

a front view of two adjacent posts with protective net;

Figure 3

a front view of a stiffening strut with a hinge;

Figure 4

a front view of a stiffening strut with two joints;

Figure 5a

a plan view of the trampoline in the unfolded state;

Figure 5b

a top view of the trampoline in the folded state;

Figure 6a

a front view of two posts of an unfolded trampoline;

Figure 6b

a front view of two posts of a folded trampoline;

Figure 7

an embodiment of a post with two wheels;

Figure 8

an embodiment of a rod with a V-shaped foot;

Figure 9a

a section through a post with a movably mounted guide element of an unfolded trampoline;

Figure 9b

a section through a post with a movably mounted guide element of a folded trampoline;

Figure 10a

a section through a post with an alternative embodiment of a guide element of an unfolded trampoline;

Figure 10b

a section through a post with an alternative embodiment of a folded trampoline;

Figure 10c

a cross-section of a reinforced post in the area of a slot;

Figure 11a

a front view of a post with an alternative embodiment of an unfolded trampoline

Figure 11b

a front view of a post with an alternative embodiment of a folded trampoline;

Figure 12

a plan view of a protective cover;

Figure 13

a front view of a protective net with a protective cover and

Figure 14

a plan view of an embodiment of a rectangular trampoline with two central joints.

A foldable trampoline 1 has according to Fig. 1 three posts 2 on. The posts 2 are parallel to one another and to a vertical direction V. Each post 2 has an upper section 2.3 and a lower section 2.4, which are each hingedly connected to one another via section joints 2.5. The posts 2 each have a wheel 19 which enables the posts to be moved in a horizontal direction H. The wheels 19 have a parking brake 21.

Furthermore, three rods 7 are provided which each connect one of the posts 2 to a central joint 6. The rods 7 are each hingedly attached to the post 2 and the central joint 6. In this sense, edge joints 7.1 are provided that enable folding. The edge joints 7.1 can be designed as hinges. Each of the rods has two of the edge joints 7.1 at their ends.

In the vertical direction V above the rods 7, three stiffening struts 5 are provided. The stiffening struts 5 extend in a horizontal direction H. Each of the stiffening struts 5 has a central joint 5.1 in its central area B1. At both edges of a stiffening strut 5, a post joint 5.3 is provided in the form of a hinge, with which the stiffening strut 5 is mounted on the post 2 in a foldable manner. The post joints 5.3 are not in the central area B1.

A jumping sheet 8 is stretched in a horizontal plane between the stiffening struts 5. An elastic element 11, which is formed into a cable, is attached to the jumping sheet 8 and the stiffening struts 5 and tensions the jumping sheet 8. In addition, a tensioning device 9 is provided, which is designed here as a crank and via which the elastic element 11 is additionally provided can be streamlined. In the vertical direction above the jumping mat 8 and between the posts 2 there is a jumping area 12 for the user.

Above the stiffening struts 5 in the vertical direction V there are securing rods 10 which each have a joint 10.1 in a central area B2. The securing bars 10 are fastened to the post 2 in a foldable manner, with post joints 10.2 being provided on both edges of a securing bar 10. The post joints 10.2 are not in the central area B2.

A tensioner 17 designed to form a motor is provided on the central joint 6. The tensioner 17 operates a first cable system 3 and a second cable system 4. With the aid of the first cable system 3, the trampoline 1 is unfolded. The second cable pull system 4 causes the trampoline 1 to be folded in. Part of the first cable pull system 3 and the second cable pull system 4 run outside of the posts 2 and the rods 7, visible in the area. Slots 20 in the post 2 enable part of the first cable system 3 and the second cable system 4 to run within the post 2, the rods 7 and the safety rods 10. The course of one part of the first cable system 3 and of the second cable system 4 within the posts 2 is shown by way of example with the aid of the dashed line. The first cable system 3 and the second cable system 4 run per se next to one another and independently of one another through the posts 2 and the rods 7.

The neighboring post 2 after Fig. 2 have a foam cover 2.1. The securing rod 10 also has a foam cover 10.3 and the stiffening strut 5 has a foam cover 5.2. A protective net 10.4 is stretched between the stiffening strut 5 and the securing rod 10. The foam covers 5.2, 10.3 and the protective net 10.4 are used for the safety of the user.

According to Fig. 3 the post joints 5.3 of a stiffening strut 5 are attached directly to the adjacent post 2 and a central joint 5.1 is provided. On the central joint 5.1 there is a joint lock 13, via which the angle of the central joint 5.1 can be fixed.

According to Fig. 4 the post joints 5.3 are not provided directly on the adjacent post 2, but offset in or against a horizontal direction H. In addition, two central joints 5.1 are provided. A securing tension cable 9.1 is passed through the stiffening struts 5. The securing tension rope 9.1 can be tensioned by means of the tensioning device 9, with which the jumping sheet 8 can be tensioned. In addition, the securing rope 9.1 can determine the joints.

The stiffening strut after FIGS. 3 and 4 is not unfolded in each case, because it is angled downwards against the vertical direction V.

Figures 5a and 5b show a trampoline 1 with eight posts 2, of which only the lower section 2.4 is shown, in a top view, in particular the post joints 5.3, 10.2 not being shown due to a clearer representation. In the representations, the central joints 5.1 of the stiffening struts 5 and the securing rods 10 are visible. The central joint 6 is hidden beneath a cladding 18 against the vertical direction V and is accordingly not visible. In Figure 5b the central axis M of the trampoline 1 is also shown. The central axis M is parallel to the vertical direction V. A circumferential direction U runs around this central axis M in a horizontal plane.

Figure 5a shows the trampoline 1 unfolded. Figure 5b shows the trampoline 1 folded. The distance in the circumferential direction U between adjacent posts of a folded trampoline is significantly smaller than the distance in the circumferential direction U between adjacent posts of an unfolded trampoline. When it is folded in, the posts move towards each other and each move horizontally Direction H radially towards the central axis M. During unfolding, the movement is correspondingly reversed.

Figures 6a and 6b show a section of the trampoline 1 with two posts 2 in a front view. In Figure 6a the smallest distance a in the vertical direction V between the central joint 5.1 and the central joint 6 is also shown.

To Figure 6a the trampoline 1 is unfolded, the trampoline 1 after Figure 6b is folded. The edge joints 7.1, with which the rods 7 are hingedly mounted on the adjacent post 2 and the central joint 6, allow the rods 7 to fold upwards in the vertical direction V during folding, with the adjacent posts 2 moving towards each other. Correspondingly, the post joints 10.2 of the securing rod 10 and the post joints 5.3 of the stiffening strut 5 make it possible for them to fold away downward in each case against the vertical direction V. During unfolding, the movement is correspondingly reversed.

When the trampoline 1 is unfolded, the section joint 2.5 is unfolded and the upper section 2.3 and the lower section 2.4 of the post 2 are coaxial. If the trampoline 1 is folded in, the upper section 2.3 and the lower section 2.4 are angled against each other and enclose a smallest angle α of 45 °. However, it is also possible that the angle α is smaller in order to fold the trampoline as compactly as possible. The trampoline is reduced in height. As indicated by the arrow, the unfolding movement runs in a horizontal direction H radially away from the central axis, which is shown in FIG Figure 6b lies behind the post 2 in the plane of the drawing, so that the securing bars 10 are guided in front of the post 2 in the plane of the drawing.

A smallest angle β between a stiffening strut and the post is about 30 °. However, it can also be smaller, the smaller the angle, the more compact the trampoline. A smallest angle γ between a rod and the post is also about 30 °. This angle can also be smaller.

To Fig. 7 the post has a base 2.2. The base 2.2 is axially wider than the upper section 2.3 and the lower section 2.4 of the post 2, so that there is space for two wheels 19. The base 2.2 has two contact areas 2.6 for edge joints 7.1. According to Fig. 8 the rod 7 can have a V-shaped foot 7.2. Two edge joints 7.1 are provided at the two ends of the V-shaped foot 7.2. Between the legs of the V-shaped foot 7.2, the second cable system 4 is exposed over a length L until it is back in the post 2 via the in Fig. 7 shown slot 20 is received, which also has the length L in the axial direction. Both measures each lead to additional stability of the trampoline 1, in particular if all posts 2 of a trampoline 1 have the base 2.2 and each rod 7 has a V-shaped foot 7.2.

Figures 9a and 9b show a section through a post 2 which has a slot 20. The post 2 is partially hollow. A guide element 14, designed as a roller, is provided within the post 2, over which a part of the second cable pull system 4 is guided. The guide element 14 is mounted in a bearing device 16. In addition, a restoring element 15, designed as a spring, is provided, which pulls the guide element 15 into a rest position. An edge joint 7.1, designed as a hinge, of the rod 7 is attached to the post 2. Part of the first cable pull system 3 is also shown.

Figure 9a shows the unfolded trampoline 1 and Figure 9b the folded trampoline 1. When the trampoline 1 is unfolded, the guide element 14 is in the rest position, into which it is driven by the restoring element 15. There is no tension on the second cable system 4. When folding in, tension is applied to the second cable pull system 4, while the guide element 14 is moved along the bearing device 16 from the rest position and the restoring element 15 is tensioned. Due to the movement of the guide element 14 along the bearing device 16, the second cable pull system 4 is deflected further up in the vertical direction V and the exposed part of the second cable pull system 4 is reduced. When tension is removed from the second cable system for unfolding, the restoring element 15 causes itself the guide element 14 is moved back into the rest position. This also minimizes the exposed part of the cable system for the unfolded trampoline 1.

Another embodiment is shown in FIG Figure 10a shown. The post 2 is connected to a rod 7 via an edge joint 7.1. The edge joint 7.1, therefore the trampoline 1, is unfolded. The second cable 4 has a first cable section 4.1 and a second cable section 4.2. The first cable section 4.1 and the second cable section 4.2 are each firmly connected to the guide element 14 to form a piston and are each tensioned. As a result of the tension of the first cable section 4.1, the guide element 14 is pulled downward within the bearing device 16 counter to the vertical direction V and is in the lowest position within the bearing device 16.

According to Figure 10b is the edge joint 7.1, thus the trampoline 1 folded. To operate the folding, the first cable section 4.1 was shortened. Due to this shortening, the guide element 14 has been pulled up in the vertical direction V and is in the uppermost position in the guide element 16.

According to Figure 10c the post 2 has an oval cross-section Q, thus an axial reinforcement of the post width in the region of the slot 20. The bearing device 16 is formed by the post itself, so that the guide element 14 is guided inside the post 2 by the post walls.

Another aspect of this design is in the Figures 11a and 11b shown. As before, the respective post 2 has the upper section 2.3 and the lower section 2.4. Both sections 2.3, 2.4 are connected pivotably with respect to one another via the section joint 2.5. Located, as in Figure 11a shown, the guide element 14 in the lowest position, the second cable section 4.2 is tensioned and the upper section 2.3 and the lower section 2.4 are coaxial. Is the guide element 14 after Figure 11b in the uppermost position in the bearing device 14, the second cable section 4.2 is relaxed and the upper section 2.3 and the lower section 2.4 collapse against each other. By tensioning the second cable section 4.2, on the other hand, the upper section 2.3 is unfolded relative to the lower section 2.4 Fig. 12 a protective cover 22 is provided which covers the elastic element 11. In addition, holding elements 22.2, which are designed as buttons, are attached to the protective cover 22. Holding means 22.1 are provided on the stiffening strut 5, which is rounded here and represents an arc of a circle. The holding means 22.1 are designed as buttonholes. Retaining means 22.1 are also provided on the jumping bed, which are hidden below the protective cover 22 here.

The protective cover 22 is according to Fig. 13 attached to the protective net 10.4.

According to Fig. 14 Another embodiment of the foldable trampoline 1 with two central joints 6 is shown.

List of reference symbols

1

Foldable trampoline

2

post

2.1

Foam cover

2.2

base

2.3

upper section

2.4

lower section

2.5

Section joint

3

first cable system

4th

second cable system

5

Stiffening strut

5.1

Central joint

5.2

Foam cover

5.3

Post joint, hinge

6th

Central joint

7th

pole

7.1

Marginal joint

7.2

V-shaped foot

8th

Jumping mat

9

Jig

9.1

Safety rope

10

Safety bar

10.1

Central joint

10.2

Post hinge

10.3

Foam cover

10.4

Protective net

11

elastic element, cable

12th

Jump area

13th

Joint lock

14th

Guiding element, role

15th

Return element, spring

16

Storage facility

17th

Tensioner, engine

18th

Disguise

19th

wheel

20th

slot

21

Parking brake

22nd

Protective cover

22.1

Holding means

22.2

Retaining element

a

smallest distance

B1

middle area

B2

middle area H horizontal direction

L.

length

M.

Central axis

U

Circumferential direction

V

vertical direction

α

angle

β

angle

γ

angle

Claims (16)

Having a folding trampoline (1) - at least three posts (2) which are arranged parallel to one another and to a vertical direction (V), a jumping sheet (8) being stretched between the at least three posts (2), - At least three stiffening struts (5) which each connect a different pair of posts (2) adjacent to one another in a circumferential direction (U) of the trampoline (1) and which stabilize these posts (2) in a horizontal direction (H), characterized,
that each stiffening strut (5) is hinged on both posts (2) adjacent in the circumferential direction (U) and has at least one central joint (5.1) which is provided in a central area (B1) of the stiffening strut (5), all in the circumferential direction (U) adjacent posts (2) for folding the trampoline (1) can be moved towards one another. Foldable trampoline (1) according to claim 1,
characterized,
that at least one central joint (6) and at least two rods (7) are provided, each rod (7) connecting a different post (2) to the central joint (6) and both on the corresponding post (2) and on the central joint ( 6) is hinged. Foldable trampoline (1) according to claim 1 or 2,
characterized,
that the jumping bed (8) is stretched by means of at least one elastic element (11), the elastic element (11) being attached to at least one post (2) and / or to at least one stiffening strut (5). Foldable trampoline (1) according to claim 2 or 3,
characterized,
that the central joint (6) and the tensioned jumping sheet (8) have a shortest distance (a) in the vertical direction (V), where a> = 20, 30, 40 or 50 cm. Foldable trampoline (1) according to one of the preceding claims,
characterized,
that at least three securing rods (10) are provided, which each connect a different pair of adjacent posts (2) and stabilize the posts (2) in a horizontal direction (H), with each securing rod (10) being foldable on the corresponding post (2) is mounted and has at least one central joint (10.1) which is provided in a central area (B2) of the safety rod (10) and which is used to fold in the trampoline (1). Foldable trampoline (1) according to one of the preceding claims,
characterized,
that the post (2) has an upper section (2.3) and a lower section (2.4), the upper section (2.3) being arranged in the vertical direction V above the lower section (2.4), a section hinge (2.5) being provided is, over which the upper section (2.3) can be pivoted relative to the lower section (2.4). Foldable trampoline (1) according to one of the preceding claims,
characterized,
that a jump area (12) is provided for the user in the vertical direction (V) above the jumping sheet (8), the central joint (6) being provided opposite the vertical direction (V) below the jumping sheet (8) and / or in a vertical direction Direction (V) above the jumping mat (8) the safety bars (10) are provided. Foldable trampoline (1) according to one of the preceding claims,
characterized,
that a separate tensioning device (9) is provided for tensioning the jumping mat (8), the tensioning device (9) acting independently and / or depending on the unfolding of the trampoline (1). Foldable trampoline (1) according to one of the preceding claims,
characterized,
that on the central joints (5.1, 10.1) of the stiffening struts (5) and / or the securing rods (10), joint securing devices (13) are provided for fixing the central joints (5.1, 10.1). Foldable trampoline (1) according to one of the preceding claims,
characterized,
that a tensioner (17), in particular designed as a motor or a crank, is provided for operating at least part of the folding movement and / or the unfolding movement. Foldable trampoline (1) according to one of the preceding claims,
characterized,
that a first cable system (3) is provided, via which the folding out of the trampoline (1) can be operated, and / or a second cable system (4) is provided, via which the folding of the trampoline (1) can be operated. Foldable trampoline (1) according to claim 11,
characterized,
that the first cable system (3) and / or the second cable system (4) are at least partially guided within a post (2) and / or a rod (7) and / or a safety rod (10). Foldable trampoline (1) according to claim 11 or 12,
characterized,
that at least one guide element (14) is movably mounted in a bearing device (16) within a post (2) and / or a rod (7) and / or a safety bar (10), the first cable pull system (3) and / or the second cable system (4) are guided over the guide element (14) or are fixed to the guide element (14). Method for folding in a foldable trampoline (1) according to one of the preceding claims 11 to 13,
characterized,
that the second cable system (4) is operated and at least indirectly causes the central joints (5.1) of the stiffening struts (5) and / or the central joints (10.1) of the securing rods (10) and / or the rods (7) to fold in, whereby all in the circumferential direction (U) to move adjacent posts (2) towards one another. Method for folding in a foldable trampoline (1) according to claim 14,
characterized,
that the second cable system (4) is operated and at least indirectly causes the upper section (2.3) and the lower section (2.4) of the post (2) of the unfolded trampoline to be pivoted from a coaxial position into a position in which they one Include the smallest angle (α) less than 180 °, 90 °, 45 °, 20 °, 10 ° or 5 °. Method for tensioning a jumping mat (8) of a foldable trampoline (1) according to one of the preceding claims 8 to 13 or according to the method for folding in a foldable trampoline (1) according to claim 14 or 15,
characterized,
that the jumping mat (8) is stretched over the separate tensioning device (9) during or after the folding apart of the foldable trampoline (1).

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