EP3233218B1 - Frame structures for a mini trampoline - Google Patents

Description

TECHNICAL AREA

The present invention relates to a frame construction for a mini trampoline and a mini trampoline comprising such a frame construction.

STATE OF THE ART

The general term trampoline offers two fundamentally different types of equipment, which differ greatly in terms of their requirements, application and construction. These are on the one hand leisure, garden and sports trampolines and on the other hand health, rehab or mini trampolines (also called rebounders).

Leisure, garden and sports trampolines have a diameter of over 2 meters, usually from 3 meters to 5 meters. The jumping mat of these devices is at least 60 centimeters to 100 centimeters above the solid floor. On such devices, people try to experience high and powerful jumps - jump heights between 1 meter and 3 meters are common; Athletes can create jump heights of over 5 meters on special equipment.

If a person takes off for a flight with the help of a trampoline, he returns to the earth or the jumping mat a fraction of a second later. When landing, the device (and the body) is loaded by forces that correspond to a multiple of the normal body weight. Leisure, garden and sports trampolines are subjected to four to eight times the acceleration due to gravity. A hopping frequency can be up to 40 to 60 times per minute. So that such forces can be permanently absorbed by the device, the jumping mats must be connected to the stable supporting structure with strong springs of various types or another type of elasticity system (e.g. rubber ropes, rubber bands, prestressed carbon or spring steel strips). In addition to the vertically acting forces, depending on the type of jump, considerable horizontal forces or transverse forces can also act on the construction of the jumping platform.

From the facts mentioned above it follows that leisure, garden and sports trampolines and their specific application require a solid construction. Linkage and connections must be of strong dimensions. As a result, such devices weigh at least 20 kilograms, but usually 60 to 200 kilograms. In addition, leisure, garden and sports trampolines are mostly used outdoors and must therefore be weatherproof. Due to their dimensions, these devices are assembled on site from prefabricated elements.

Mini trampolines in the sense of the present invention, however, are usually offered with a diameter of 100 centimeters to 150 centimeters. Your jumping mat is positioned 20 centimeters to 35 centimeters above the solid floor. Such devices are used to achieve positive impulses for personal health promotion, relaxation and for physiotherapeutic exercises. The type of use can be described as seesawing, swinging and light jumping. Usually the feet stay close to the mat level - i.e. Mini trampolines are designed for maximum jumping heights of 10 centimeters to 40 centimeters. During normal use, peak loads in the range of 2.5 to 3.5 times the gravitational acceleration result.

Mini trampolines are mostly used at home or in rooms. They are often set up or moved several times a day. This application requirement results in the need for lightweight, yet stable constructions. The weight of mini trampolines should not exceed 10-15 kg, otherwise the customer benefit is clearly limited. Mini trampolines are almost always delivered assembled. Optimal benefit would mean that the devices function practically noiselessly because noises distract from the focus on the posture and thus weaken the preventive-therapeutic benefit.

The chassis frames of mini trampolines with legs have been constructed in the same way for decades: a ring is bent from a steel tube, the end sections are cut to length and firmly connected with an orbital weld seam. To assemble the legs, elements of screw or plug connections or folding mechanisms are attached to the ring.

When bending the round tubular frame, considerable material losses of 15% to 25% of the frame circumference are incurred. This is particularly due to the necessary lead and lag during the bending process in a 3-roll press. In addition, time-consuming reworking of the welded connections is necessary - for example grinding, polishing and straightening - which has a negative impact on both the quality and the production costs of the mini trampoline.

Mini trampolines are known today in which the legs are attached by means of screw connections. For this purpose, threaded sockets are welded onto the frame and corresponding threads are cut into the leg tubes. In practice, however, constructions of this type are susceptible to damage (experience has shown that users often drop legs when screwing in and unscrewing, which leads to damage to the threads on the leg tube). Damaged threads lead to even faster wear of the connection and thus to wobbling and rattling of the legs. Design variants with screwed-on instead of welded-on connection elements for the legs tend to wear out more quickly in the connection zones when used as intended. The connection of the interlocked elements deteriorates with increasing use and the legs wiggle under load. Such devices lose their original vibration quality after a short time and thus a large part of their usefulness.

Another common construction form uses upside-down U-shaped elements, for example two legs connected with an integrated web, whereby two legs come to stand next to each other and are joined together to form a 4- to 8-sided structure. The webs then form the frame for the jumping mat.

Not all users have enough space in their home to keep their training trampoline permanently set up. Many owners want (or have to) to put away their training equipment between the individual practice rounds as space-saving as possible. The changeover from use to clearing away should be quick and easy.

In today's devices with folding legs, sockets are usually welded to the frame tube. These are slotted in the middle. A guide rod is mounted in the slot on an axis of rotation. The opposite end of the guide rods is anchored in the tube of the leg with the help of a snap ring. A spring is used to press or pull the leg against the frame or the connecting piece when folded or unfolded.

The slotted sockets usually have extremely sharp edges due to the manufacturing method. This product characteristic has already resulted in several serious cuts and property damage to floors and furniture.

When preparing to use the device (unfold), pull the pipe out a few centimeters against the spring pressure, swivel it through 90 ° and then slide it over the permanently attached socket. This creates a more or less rigid connection between the leg and the frame.

The US 2010/240496 A1 shows a frame construction for a trampoline of usual size with nodes, internodes and legs according to the preamble of claim 1.

The WO 2008/029170 A1 shows a further frame construction for a trampoline of usual size with a safety net.

The US 2012/289379 A1 shows a further frame construction for a trampoline of usual size with a safety net.

The WO 2009/098324 shows another frame construction for a trampoline of usual size with a comprehensive safety net. On the one hand, outward folding legs are proposed and, on the other hand, legs connected in one piece to the nodes, which are provided with cover plates on their outside and on their inside for stabilization.

PRESENTATION OF THE INVENTION

It is an object of the present invention to provide an improved frame construction for a mini trampoline. The frame construction should be stable, material-saving and cost-efficient. It should be quiet during use and reduce the risk of personal injury and property damage when operating / clearing away.

This object is achieved by a frame construction with the features of claim 1. Accordingly, a frame construction for a mini trampoline is proposed, which comprises at least three nodes, at least three elongated internodes and a multiplicity of legs, two of the internodes each being associated with end sections and firmly connected to one another via one of the nodes, so that one is preferably round at least in sections , closed and essentially in a main plane frame is formed. Each leg is attached directly to one of the nodes. All nodes are designed as wide-leg nodes. Breitbein nodes are deformed in such a way that they extend outwards from the internodes or from the frame construction parallel to the main plane and preferably towards the respective leg, so that the legs, which are attached to the nodes, are positioned outwards with respect to the frame , This results in a wider stand of the mini trampoline, which reduces the risk of tipping particularly advantageously for exercises with high transverse forces and also enables the mini trampoline to be stacked with the legs attached

The invention is based on the knowledge that a modular structure of nodes and internodes with legs, which are attached to the nodes, enables an optimal frame construction for a mini trampoline, which offers efficient assembly and a sustained high vibration quality. So that's the one here proposed construction superior to conventional frames due to greater user comfort and it also has a significantly higher stability.

The term "nodes" is to be understood to mean functional connecting elements or nodes on which frame segments, i.e. the internodes, and the legs are attachable. The nodes are part of the trampoline frame. The nodes can have different shapes, from spherical to ellipsoidal to deformed convex bodies. The node, in particular the simple ball knot, can be manufactured inexpensively as an injection molded, turned or forged part. This enables the production of a stable, low-cost device.

The term "internodes" are to be understood as elongated frame segments which can be straight, curved or angled. The frame elements can be solid or hollow profiles. Pipe sections are preferred. Cross-sections of the internodes can be round, preferably circular, or polygonal, preferably regularly polygonal. The internodes define the frame shape and span the main level. The shape of the frame can be circular, oblong-oval, polygonal or a mixture of these. It goes without saying that internodes of various shapes can be put together to form a frame according to customer requirements.

The length of the internodes can be kept relatively short. For example, the individual internodes can be 1/4 to 1/8, in particular 1/5 to 1/6, of the total circumference of the frame. As a result, pipe segments in particular can be produced with minimal loss of material.

A mini trampoline preferably has a maximum inner diameter of the frame structure in the main plane in the range from 80 centimeters to 200 centimeters, preferably in the range from 100 centimeters to 160 centimeters. This inner diameter allows a swing mat, which is optimal for intended swinging on the mini trampoline. (Oval devices: ideally 140 x 220 centimeters - they are preferably used to allow severely handicapped patients to experience relaxing, muscular stimulation during therapy, e.g. paraplegics, quadriplegics).

The legs are preferably essentially straight cylinder sections, preferably with a circular cross section. However, the cross section can also be round, oval, partially round or polygonal. The ends of the legs preferably each have a foot, for example made of rubber, in order to avoid slipping on the floor and noise during use. The length of the legs of a mini trampoline perpendicular to the main plane is preferably in the range from 15 centimeters to 40 centimeters, in particular from 20 Centimeters to 30 centimeters. This leg length allows sufficient swing cloth movement for the intended swinging on the mini trampoline and helps to keep the total weight of the mini trampoline low.

Dimensions and materials of the frame structure are preferably selected so that a weight of the frame structure is less than 18 kg, preferably less than 16 kg, in particular less than 15 kg (ideally 10-12 kg). Since a mini trampoline should be set up easily and stowed away again after use, such a limitation in dimensions and / or weight is advantageous.

It is also advantageous if the nodes are essentially solid bodies. Due to the size of the mini trampoline and the associated frame construction, the massive design offers optimal stability.

The internodes are preferably designed as tube sections. This allows simple and inexpensive production. A maximum node diameter perpendicular to the main surface is preferably larger than a maximum internode diameter perpendicular to the main surface. The nodes are therefore preferably nodes, which stand out slightly above the internodes when the frame is assembled. Here, the nodes are preferably designed as convex bodies, particularly preferably as rotational bodies, in particular essentially spherical.

The nodes are preferably provided with a first part of a fastening device and the legs with a second part of the fastening device for fastening one of the legs to one of the nodes. The fastening device can include an integrated screw, bayonet, plug-in and / or other coupling options. The fastening device is preferably designed in such a way that a connecting axis of the fastening device, along which said leg and sodium can be connected, runs essentially perpendicular to the main plane. As a result, transverse forces acting on the fastening device can be minimized, since a main force direction runs essentially parallel to the direction of gravity, which improves the longevity of the mini trampoline while optimally maintaining the vibration quality.

In one embodiment, the fastening device is an engagement connection and the one of the first or second parts of the fastening device comprises a distally tapered cone section with a free one End, the other of the first or second parts comprises a corresponding depression or depression widening conically outwards. An engagement recess, preferably a threaded hole, is let into the free end of the cone section. An engagement element, preferably a threaded bolt, corresponding to the engagement recess is arranged in the depression. The engaging element and the engaging recess are thus complementarily shaped and designed for mutual engagement. The engaging element, that is to say in particular the threaded bolt, is preferably completely sunk into the recess. In this case, the engagement element can extend as far as a mouth surface of the depression or can be completely sunk in the depression. Because of this arrangement in the recess, the engaging element is surrounded on all sides by a wall of the cone section and is optimally protected against damaging mechanical effects, for example against impact or falling damage.

The cone geometry also ensures optimal alignment of the legs and optimal pressure absorption during use, since an axis of the cone connection is parallel to the use-related force effect between the frame and legs.

The cone of the cone connection can be covered by means of an additional material layer, in particular by means of a cap. The material layer is an intermediate layer between the cone surface and the walls of the nodium forming the recess for the cone. The material layer prevents the cone from biting into the walls, making the cone connection optimally detachable. The material layer also secures the connection against unintentional loosening and minimizes noise during use.

The material layer can cover the entire outer surface of the cone. In a further development, a top surface of the cone is also covered by this material layer. It is also conceivable that the cap has an additional flange structure and is designed such that the entire contact area between the node and the leg is covered by the cap.

The material layer can in particular consist of plastic. The material layer is preferably a one-piece element.

To fasten the internodes, the nodes preferably each have two protrusions which protrude opposite one another and run in the main plane. These neck-shaped projections are cylindrical and can be straight or curved be trained.

The nozzles are preferably angled or curved in such a way that they are adapted to any curvature of the corresponding internode section into which the nozzles are respectively inserted. This is advantageous because with an adapted curvature, that is to say when the connecting piece and the associated internode section have the same curvature, a contact area between the two components is maximized and an optimal and, in particular, precisely fitting connection is possible. A precisely fitting connection optimizes, for example, a possible adhesive connection between the sodium and the internode, in particular this leads to a harmonization of the adhesive layer thickness over the adhesive surface.

In the case of folding legs, the contact area between the sodium and the folding leg can be improved by applying at least one layer of material. For example. a plastic coating can be applied to the protrusions or pressed into the recess in the leg for receiving the protrusions. The leg is thus guided on a sliding position, which optimizes the rotary movement, the bearing precision and the durability of the pivot bearing. In particular, an improved pivot bearing function and protection of the respective contact surfaces can be achieved. In addition, the material layer results in greater blocking precision when the folding leg is folded in and out, so the blocked folding leg does not rattle.

The material layer can consist of plastic or metal. The material layer is preferably provided as a molded part.

The internodes can each be provided with a recess on the associated end sections, which recesses are now designed such that one of the said projections can be inserted there with a precise fit. It is particularly advantageous if each projection engages with a precise fit in the corresponding internode over at least a maximum frame thickness, in particular over at least 2 centimeters, preferably over at least 3 centimeters or more, with preferably flat contact. Deep contact increases the contact area between the two elements, which further stabilizes the connection. In addition, the internode can then be pushed over the nozzle to the nodule body, which reduces the risk of injury and looks optically appealing.

A preferred embodiment variant provides for the lateral connecting pieces on the node to be designed in a geometric shape that is unambiguous Positioning is made easier and any material or processing-related irregularities on the internode end pieces are caught. For this purpose, preformed adapter pieces can be inserted into the internodes on both sides in the radius of the internodes and fixed in place by gluing, welding, deforming or combinations of these fastening techniques in the interior of the internode end sections assigned to the sodium. In order to compensate for any impairments of the contact surfaces inside the internode, the adapter pieces can be made longer than the lateral connecting pieces of the node. The interior of the adapter parts has cutouts that correspond to the selected geometric shape of the lateral connecting pieces. When defining the shape, attention is paid to the largest possible contact area and cost-effective processing options. Spigots and recesses can be designed, for example, as harmonic triangular, quadrangular or polygonal polygons, as multi-tooth profiles or spline profiles.

The nodes and internodes are preferably firmly, preferably areally connected to one another by means of gluing, welding, clamping, deforming or riveting or a combination of gluing, welding, clamping, deforming and riveting.

The internodes are therefore preferably placed on the projections. Alternatively, the projections can also have receptacles into which the end sections of the internodes can be inserted. This connector can also be formed by conical counterparts.

This node-internode structure results in a cost-effective frame construction with increased stability, which has an optimal effect on the vibration quality of the mini trampoline. In addition, the fast assembly process and the variability of the nodes (leg and operating forms) and the internodes (especially with regard to length and shape) facilitate just-in-time production according to the customer's configuration requirements. Compared to the current situation, substantial cost and storage space savings can be achieved.

In a further development, the trampoline legs are designed as folding legs. Such a construction offers the advantage that the folding legs can be pivoted from a folded-out position into a folded-in position, which advantageously reduces the storage space requirement. The folding legs can be set outwards in relation to the frame in the unfolded position, so have a wide-leg design. The folding leg can be bent in the area close to the frame, which enables a wider stand. Due to the pivotability of the folding leg, an expansion of the frame construction along the main plane can be reduced essentially to the frame diameter by folding the legs in spite of the wide leg geometry.

The folding option offers a quick alternative to removing the screwed-on trampoline legs by lifting the attachment between the sodium and the leg to stow the trampoline. In addition, the legs do not have to be stored separately and cannot be lost.

In one embodiment, therefore, all legs are pivotally mounted about a pivot axis along a pivoting movement between a fold-out and a fold-in position on the node. Here, the node has a first outer rotation stop and the leg has a corresponding second outer rotation stop. The first and second outer rotation stops define the fold-out position of the leg when they strike each other. Advantageously, each node additionally has a first inner rotation stop and the corresponding leg preferably has a corresponding second inner rotation stop, the first and second inner rotation stops defining the folding position of the leg when struck against one another.

The fold-out position is advantageously selected such that the trampoline leg at least in the region of the free end of the leg, i.e. of the bottom end, essentially perpendicular to the main plane of the trampoline frame. A retracted position is ideally chosen so that the free end of the leg is folded inwards and is close to the fly mat, which is essentially in the main plane.

A folding mechanism in which the pivot axis runs through a frame cross-sectional center of the pivotable leg is particularly preferred. The pivot point of the folding leg can thus be integrated into the frame to save space, preferably placed in the center of the node and internode cross-section. In this way, a leg element that is continuous in the longitudinal direction can be used, which has an advantageous effect on stability, vibration quality and operational safety, in particular also with regard to the risk of crushing. For this purpose, the nodes can be designed as swivel joints. This also avoids annoying rattling noises that occur during the use of conventional devices and with the Total wobbling movements due to a multi-part leg. Disturbing noises and instability particularly impair the focus on the user's posture and thus reduce the therapeutic benefits. The rotating nodine proposed here thus enables a particularly low-noise folding solution with a stable stand and space-saving clearing properties. In addition, the ease of use of the folding mechanism is optimized for one-handed use, at the same time the frame construction is quiet during use and the risk of personal injury and property damage when operating / clearing away is minimized.

In order to avoid undesired pivoting of the trampoline legs, a locking device in the folding process can be provided in a further development. The frame construction can therefore comprise a locking element which is mounted displaceably on the leg or on the nod along a locking movement running essentially perpendicular to the pivot axis between a release position and a locking position. This locking element is designed to securely lock the trampoline leg at least in the unfolded position. Here, the locking element blocks the pivoting movement in the locking position and releases it again in the release position. The locking element thus acts on the relative mobility between the leg and the sodium and is arranged such that the leg remains stable in the locking position even when used as intended.

The locking element is preferably held in the locking position under pretension and can be pressed out of the locking position against the pretension using force. A mechanical compression spring or another pressure medium can be used to generate the preload. Depending on the design, tension springs or traction means are also conceivable.

A first locking stop is preferably arranged on the node, the first locking stop preferably being the first outer rotational stop of the node. Furthermore, a second locking stop is arranged on the locking element, a contact or pressure surface between the first and the second locking stop being essentially parallel to the locking movement. For example, it can be inclined from 0 ° to 10 ° to the radial direction with respect to the pivot axis. As a result of this orientation, the two stops collide essentially head-on without any transverse forces triggering the movement occurring.

Preferably, an actuating element that can be actuated manually from the outside is provided, which, when actuated, acts on the locking element in such a way that the locking element can be transferred from the locking position into the release position. The actuating element can, in particular, provide a control cam which bears against a pin on the locking element. The arrangement is then preferably designed such that by moving the actuating element, which is preferably designed as a push button, alternatively as a lever or similar, the control cam is pressed along the pin, whereupon the pin makes a movement between the locking and in the direction of the Release position, i.e. away from the swivel axis. The actuating element can itself be preloaded, so that it automatically returns to the starting position after the actuating action and the curve releases the pin.

Alternatively, the first locking stop can be arranged on the node and the second locking stop on the locking element in such a way that a mutual contact or pressure surface between the first and the second locking stop is arranged at an angle to the locking movement in such a way that the locking element is pivoted by hand from the locking position can be pushed into the release position. The angular position of the contact surface can be 8 ° to 20 °, in particular 10 ° to the direction of travel of the locking element, that is to say it can be made just below the self-locking slope. These angular pressure surfaces have the effect that part of the torque exerted on the leg is transformed into a force component on the locking element, so that the locking element can be pressed from the locking position into the release position. The leg acts as a lever.

A securing element can now be provided in order to secure the locking. Here, a first securing stop on the securing element and a second securing stop on the locking element can be provided. The securing element is then designed and arranged in such a way that it can be moved along a securing movement between a securing position and a release position, the first securing stop being present in the locking movement on the second securing stop when the securing element is in the securing position such that the locking element blocks in the locking position is. Here, the securing element can be moved manually from the outside into the release position, so that Locking element can be released.

The securing element can also be pre-tensioned, preferably by a compression spring, so that the securing element automatically moves into the securing position and is held there until the next actuation.

In one development, the locking element is tapered toward the front, that is to say against the pivot axis, and in the locking position is surrounded by a free space at the end, that is to say against the axis. As a result of this configuration and the advantageous pretensioning of the locking element in the locking position, the locking element is always readjusted automatically in the event of use-related structural damage by the action of pressure to the optimal locking position, so that locking without play is ensured even after prolonged use. In addition, the cone or wedge shape has a centering effect on the locking element. In a particularly preferred further development, the locking mechanism therefore further comprises self-adjusting components which guarantee a largely play-free fixation over a long period of use, when they are folded out, and function silently.

The locking mechanisms proposed here thus provide a locking mechanism and offer a high level of operating and user convenience. In particular, they also allow one-handed operation.

The present invention further relates to a mini trampoline according to claim 12 with a frame construction as described above, wherein the mini trampoline further comprises essentially in the main plane jumping mat, which is stretched on the frame.

The mini trampoline according to the invention is characterized by a persistently high vibration quality due to the long-term freedom from play of the connection points of the stable frame construction.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig.1a

eine perspektivische Ansicht einer runden Rahmenkonstruktion umfassend Nodien, Internodien und Beine;

Fig. lb

eine perspektivische Ansicht einer ovalen Rahmenkonstruktion umfassend Nodien, Internodien und Beine;

Fig. 2

eine perspektivische Ansicht eines Beispiels eines Nodiums, nicht gemäss der Erfindung gefertigt;

Fig. 3

eine perspektivische Ansicht des Nodiums nach Fig. 2 mit einem korrespondierenden Bein;

Fig. 4

eine Frontalansicht des Nodiums und des Beins nach Fig. 3;

Fig. 5

eine perspektivische Ansicht einer ersten Ausführungsform eines Nodiums, nämlich eines Breitbein-Nodiums, gemäss der Erfindung;

Fig. 6

eine perspektivische Ansicht des Nodiums nach Fig. 5 mit einem korrespondierenden Bein;

Fig. 7

eine perspektivische Ansicht eines Beispiels eines Kugel-Nodiums, nicht gemäss der Erfindung gefertigt;

Fig. 8

eine perspektivische Ansicht des Nodiums nach Fig. 7 mit einem korrespondierenden Bein;

Fig. 9

eine Seitenansicht einer zweiten Ausführungsform eines Nodiums gemäss der Erfindung mit verschwenkbarem Bein, wobei das Bein in einer Ausklappposition und durch ein Verriegelungselement nach einer ersten Ausführungsform in einer Verriegelungsposition blockiert ist;

Fig. 10

eine perspektivische Ansicht auf das Nodium mit Bein in der Situation nach Fig. 9;

Fig. 11

eine Seitenansicht des Nodiums mit Bein nach Fig. 9, wobei das Verriegelungselement aus der Verriegelungsposition nach unten in eine Freigabeposition gebracht ist;

Fig. 12

eine perspektivische Ansicht auf das Nodium mit Bein in der Situation nach Fig. 11;

Fig. 13

eine Seitenansicht des Nodiums mit Bein nach Fig. 9, wobei das Bein aus der Ausklappposition nach links gegen eine Einklappposition verschwenkt ist;

Fig. 14

eine Seitenansicht des Nodiums mit Bein nach Fig. 9, wobei das Bein aus der Ausklappposition nach links in die Einklappposition gebracht ist;

Fig. 15

eine Seitenansicht auf eine dritte Ausführungsform eines Nodiums gemäss der Erfindung mit verschwenkbarem Bein, wobei das Bein in einer Ausklappposition und durch ein Verriegelungselement nach einer zweiten Ausführungsform in einer Verriegelungsposition blockiert ist; das Verriegelungselement ist durch ein Sicherungselement in der Verriegelungsposition gesichert;

Fig. 16

eine perspektivische Ansicht des Nodiums mit Bein in der Situation nach Fig. 15;

Fig. 17

eine Seitenansicht des Nodiums mit Bein nach Fig. 14, wobei das Bein aus der Ausklappposition nach links gegen eine Einklappposition verschwenkt ist; das Sicherungselement ist aus einer Sicherungsposition in eine Freigabeposition gedrückt und das Verriegelungselement durch Anschlag an einem erstem Verriegelungsanschlag am Nodium aus der Verriegelungsposition gegen die Freigabeposition gedrückt;

Fig. 18

eine perspektivische Ansicht des Nodiums mit Bein in der Situation nach Fig. 17;

Fig. 19

eine Seitenansicht des Nodiums mit Bein nach Fig. 17, wobei das Verriegelungselement vollends in die Freigabeposition gedrückt und das Bein weiter aus der Ausklappposition nach links gegen eine Einklappposition verschwenkt ist;

Fig. 20

eine perspektivische Ansicht des Nodiums mit Bein in der Situation nach Fig. 19;

Fig. 21

eine Seitenansicht des Nodiums mit Bein nach Fig. 17, wobei das Bein in die Einklappposition verschwenkt ist; das Verriegelungselement ist aufgrund seiner vorgespannten Lagerung in die Verriegelungsposition und das Sicherungselement in die Sicherungsposition zurückgekehrt;

Fig. 22

eine perspektivische Ansicht eines Adapterstücks zur Verbindung von Nodium und Internodium;

Fig. 23

eine Weiterbildung, bei welcher der Konus des Beines nach Fig. 3 oder Fig. 4 mit einer Kappe mit Flansch abgedeckt ist und eine solche Kappe;

Fig. 24

eine Weiterbildung, bei welcher der Konus des Beines nach Fig. 3 oder Fig. 4 mit einer Kappe ohne Flansch abgedeckt ist und eine solche Kappe;

Fig. 25

in perspektivischer Ansicht das Nodium mit dem Nocken, wobei der Nocken gemäss einer Weiterbildung eingefasst ist;

Fig. 26

den Gegenstand von Fig. 25 in einer Seitenansicht;

Fig. 27

einen Beinabschnitt einer Weiterbildung des Klappbeines, wobei eine erste Ausführungsform einer Einlage in den Beinabschnitt zur optimalen Führung des Verriegelungselements eingelegt ist;

Fig. 28

den Beinabschnitt des Klappbeines nach Fig. 27, wobei eine zweite Ausführungsform der Einlage in den Beinabschnitt eingelegt ist;

Fig. 29

in perspektivischer Ansicht eine weitere Ausführungsform des Verriegelungselements mit Druckknopf;

Fig. 30

den Gegenstand nach Fig. 29, wobei einige verdeckte Kanten (gestrichelt) sichtbar gemacht wurden;

Fig. 31

in perspektivischer Ansicht eine weitere Ausführungsform des Verriegelungselements mit Druckknopf; und

Fig. 32

den Gegenstand nach Fig. 31, wobei einige verdeckte Kanten (gestrichelt) sichtbar gemacht wurden.

Preferred embodiments of the invention are described below with reference to the drawings, which are used only for explanation and are not to be interpreted restrictively. The drawings show:

1a

a perspective view of a round frame structure comprising Nodes, internodes and legs;

Fig. Lb

a perspective view of an oval frame structure comprising nodes, internodes and legs;

Fig. 2

a perspective view of an example of a nodium, not made according to the invention;

Fig. 3

a perspective view of the node after Fig. 2 with a corresponding leg;

Fig. 4

a frontal view of the nodium and the leg after Fig. 3 ;

Fig. 5

a perspective view of a first embodiment of a nodium, namely a Breitbein nodium, according to the invention;

Fig. 6

a perspective view of the node after Fig. 5 with a corresponding leg;

Fig. 7

a perspective view of an example of a spherical nodium, not made according to the invention;

Fig. 8

a perspective view of the node after Fig. 7 with a corresponding leg;

Fig. 9

a side view of a second embodiment of a nodium according to the invention with a pivotable leg, wherein the leg is blocked in a fold-out position and by a locking element according to a first embodiment in a locking position;

Fig. 10

a perspective view of the node with leg in the situation after Fig. 9 ;

Fig. 11

a side view of the node with leg after Fig. 9 , wherein the locking element is brought down from the locking position into a release position;

Fig. 12

a perspective view of the node with leg in the situation after Fig. 11 ;

Fig. 13

a side view of the node with leg after Fig. 9 , wherein the leg is pivoted from the fold-out position to the left against a fold-in position;

Fig. 14

a side view of the node with leg after Fig. 9 , the leg being brought from the fold-out position to the left into the fold-in position;

Fig. 15

a side view of a third embodiment of a nodium according to the invention with a pivotable leg, the leg in a fold-out position and by a locking element after a second Embodiment is blocked in a locking position; the locking element is secured in the locking position by a securing element;

Fig. 16

a perspective view of the node with leg in the situation after Fig. 15 ;

Fig. 17

a side view of the node with leg after Fig. 14 , wherein the leg is pivoted from the fold-out position to the left against a fold-in position; the securing element is pressed out of a securing position into a release position and the locking element is pressed out of the locking position against the release position by a stop at a first locking stop on the node;

Fig. 18

a perspective view of the node with leg in the situation after Fig. 17 ;

Fig. 19

a side view of the node with leg after Fig. 17 , wherein the locking element is fully pressed into the release position and the leg is pivoted further from the fold-out position to the left against a fold-in position;

Fig. 20

a perspective view of the node with leg in the situation after Fig. 19 ;

Fig. 21

a side view of the node with leg after Fig. 17 , with the leg pivoted into the retracted position; the locking element has returned to the locking position due to its prestressed mounting and the securing element has returned to the securing position;

Fig. 22

a perspective view of an adapter piece for connecting sodium and internode;

Fig. 23

a training in which the cone of the leg after 3 or 4 is covered with a flange cap and such a cap;

Fig. 24

a training in which the cone of the leg after 3 or 4 is covered with a cap without a flange and such a cap;

Fig. 25

a perspective view of the node with the cam, the cam being framed according to a further development;

Fig. 26

the subject of Fig. 25 in a side view;

Fig. 27

a leg section of a development of the folding leg, wherein a first embodiment of an insert in the leg section for optimal guidance the locking element is inserted;

Fig. 28

the leg section of the folding leg Fig. 27 , wherein a second embodiment of the insert is inserted into the leg section;

Fig. 29

a perspective view of another embodiment of the locking element with push button;

Fig. 30

the subject Fig. 29 , with some hidden edges (dashed) made visible;

Fig. 31

a perspective view of another embodiment of the locking element with push button; and

Fig. 32

the subject Fig. 31 , with some hidden edges (dashed) made visible.

DESCRIPTION OF PREFERRED EMBODIMENTS

Based on Figures 1a to 21 Various examples, not according to the invention, and preferred embodiments according to the invention will now be described.

Figure 1a schematically shows an example of a frame construction 1. The frame construction 1 comprises nodes 2, internodes 4 and legs 5. In the embodiment shown, the internodes 4 are bent tube segments, wherein a node 2 is arranged between two end sections 41, 42 of two internodes 4 assigned to each other is. The nodes 2 are inserted and fastened in an exact fit into the internodes 4, so that an essentially circular frame 10 with legs 5 projecting downwards is formed. The frame 10 defines a main plane H.

A frame diameter D _R is between 100 centimeters and 200 centimeters. A tube diameter D _{I of} the internodes 4 is 2.5 centimeters to 4 centimeters, preferably about 3 centimeters.

One leg 5 is attached to each of the nodes 2.

In a particularly preferred embodiment, as shown in FIG. 1 a, the frame structure 1 has five nodes 2, five internodes 4 and five legs 5. It is understood that 3, 4, 6, 7, 8 or more nodes 2 and internodes 4 can be combined to form a frame 10. Internodes 4 differently curved or shaped can also be used.

Figure lb shows an oval embodiment with four quarter-circle internodes 4, two straight internodes 4 and six nodes 2, each with one leg 5. This embodiment is particularly suitable for lying use (ie the person lying down is passively swung by a second person).

Figure 2 shows in perspective an example of a node 2, not according to the invention, in detail. A nodule body 20 of the nodium 2 wraps around a solid cylinder, so that two connecting pieces 21, 22 protrude laterally of the nodium body 20. The nozzles protrude over 2 centimeters to 6 centimeters from the node body 20 and have a diameter of about 2 centimeters to 3.5 centimeters. The connecting pieces 21, 22 are shaped in such a way that they can be inserted into corresponding recesses 43 at free ends of the internodes 4 with a precise fit and completely. The recesses 43 on the internodes 4 are therefore preferably so deep that the respective connector 21, 22 can be completely accommodated. Thus, a maximum contact area between connecting piece 21, 22 and internode 4 is possible, which allows a secure connection of the two elements 2, 4.

In a particularly preferred embodiment according to Figure 22 adapter pieces 44 are inserted into the recesses 43 at the free end sections 41, 42 of the internodes 4. An outer surface 440 of the adapter pieces 44 contacts a contact surface 430 delimiting the recess 43. The outer surface 440 and the contact surface 430 are preferably firmly glued. These adapter pieces 44 have at least outwardly open recesses 45 which are shaped corresponding to the sockets 21, 22 to be received. Thus, the connecting pieces 21, 22 can be inserted into the cutouts 45 with a precise fit. These cutouts 45 or connecting pieces 21, 22 are preferably shaped in such a way that a non-rotatable and well-defined connection between internode 4 and sodium 2 is made possible. In Fig. 22 an essentially triangular cross-sectional shape is shown with rounded corners. The cutouts 43 or connecting pieces 21, 22 can furthermore have a harmonic triangular, quadrangular or polygonal polygonal shape, a multi-tooth profile or a spline profile as a cross-sectional shape.

The cutouts 43 are preferably deeper in the longitudinal direction of the internode 4 than the connecting pieces 21, 22 are long, so that the connecting pieces 21, 22 are completely accommodated in the cutouts.

The provision of these adapter pieces 44 enables an optimal and secure reception of the connecting pieces 21, 22 in the internode end sections 41, 42.

The body 20 after Fig. 2 is elongated downwards and there has a first part 61 of a fastening 6 for fastening the leg 5. The first part 61 has the same cross section as the leg 5 at the free end facing the leg 5. This cross section is preferably circular. Alternatively, it can also be partially round, round or polygonal.

A conical depression 66 is provided in the free, lower end of the node body 20. The recess 66 has a circular cross section and tapers towards its depth in such a way that a counter cone 64 of the leg 5 can be inserted with a precise fit. An angle of inclination of the cone 64 can be 5 ° to 10 ° to the longitudinal axis of the cone. An engagement element 67, here a threaded bolt, is countersunk centrally in a center of the recess 66 and is surrounded by the protective body 20 on all sides. The nodal body 20 projects beyond the threaded bolt 67 by 1 millimeter to 5 millimeters, so that the bolt 67 is optimally protected from falling and impact damage from all sides. The threaded bolt 67 with a diameter of 5 millimeters to 12 millimeters runs perpendicular to the longitudinal extension of the connecting pieces 21, 22 and through a central axis A of the connecting pieces 21, 22. The free end of the stud 67 is preferably chamfered.

Figures 3 and 4 show a perspective view and a frontal view of the node Fig. 2 with the corresponding leg 5. The leg 5 is a straight piece of pipe and preferably has a stand for ground contact at one end and a second part 62 of the attachment 6 at the other end. The second part 62 of the attachment 6 is provided by the free cone section 64, which is shaped with a precise fit in relation to the recess 66 and thus tapers in the distal direction towards the node 2. At the proximal, wide end of the cone section 64, an offset 642 is also provided, which is designed such that an edge or an end face 670 of the nodal body 20 can be flush with the outside. The offset 642 and the end face 670 thus have essentially the same outside and the same inside diameter and lie essentially transversely to the longitudinal axis of the leg 5. This ensures an outward transition from the node 2 to the leg 5 to the outside and an optimal lateral movement on the inside Support is needed for good stability.

An engagement recess 641 protruding in the longitudinal direction of the leg 5 is recessed at a free end 640 of the cone section 64. The engagement recess 641 runs from the outside in the proximal direction, essentially parallel to the longitudinal direction of the leg 5 in its depth. A wall of the engagement recess 641 or of the cone section 64 preferably has a thickness of at least 2 millimeters to 5 millimeters near its free end 640, increases in the proximal direction and is provided with a thread which corresponds to the thread of the threaded bolt 67.

In practice, the leg 5 can now be screwed onto the node 2 by a rotary movement, the threaded bolt 67 being screwed into the engagement recess 641 and at the same time pushing the cone section 64 into the recess 66 until Butt the outer surfaces of the sodium body 20 and the leg 5 together.

The connection axis of the fastening 6 runs parallel to the longitudinal extension of the leg 5, which enables an optimal force transmission and centering between the node 2 and the leg 5 with minimal transverse loading of the threaded connection 67, 641.

Since both the thread of the bolt 67 and the thread of the engaging recess 641 are countersunk, the threaded connection is optimally protected against falling or impact damage.

Moreover shows Fig. 3 that an encircling groove can be provided on an outer surface of the cone section 64, into which an O-ring 59 is inserted, which protrudes laterally beyond the groove. When the leg 5 is connected to the node 2, the elastic O-ring is then compressed and thus ensures a clamping force between the node 2 and the leg 5, which prevents the connection 6 from loosening or even loosening during use.

In a further development, the outer surface of the cone 64 is covered with an additional material layer. This is in the Figures 23 and 24 shown.

Figure 23 shows leg 5 with the cone section 64, the O-ring 59 being inserted into a groove in the upper end region of the cone 64 and the lateral cone surface of the cone 64 being covered with a cap 644. Cap 644 (right in Fig. 23 shown in isolation) has a circumferential flange 645 at the lower end and is designed in such a way that it can be simply plugged or pushed onto the cone 64. The flange 645 facing outward in the manner of a brim is designed in such a way that it comes to rest on the shoulder 643 of the leg 5 and covers it. If the conical connection is now established, the material layer of the cap 644 lies between the leg 5 and the first part 61 of the fastening device 61 (see, for example, Figs. 3, 4 ).

Figure 24 shows a cap 644 in a further embodiment without the flange 645.

The cap 644 can be used as an alternative or in addition to the O-ring 59 in all embodiments.

In a further development, not shown, further surfaces, such as the distal end surface at the free end 640, can be covered with a material layer of the cap 644. Such a cover can be realized, for example, by means of a further flange which is directed inwards like a brim.

The material layer of the cap 644 locally prevents direct contact between sodium 2 and leg 5. Due to micro-vibrations during use, sodium 2 can and leg 5, especially if the two elements are of identical material, bite onto one another when no cap 644 is inserted. This could result in high static friction, which is disadvantageous for the dismantling of the legs 5. Material layer 644 can avoid such locally increased static friction between node 2 and leg 5. Such micro-vibrations occur, for example, if the leg 5 is only insufficiently tightened during use of the trampoline. In addition, the material layer 644 can counteract an unwanted loosening of the screw connection, with which the screw connection is secured. Rattling noises can also be reduced by means of the cap 644.

The material layer 644 can be molded from plastic, for example. The cap 644 is preferably a one-piece molded part.

Figures 5 and 6 show a perspective view and a frontal view of a first embodiment of a node 2, namely a wide-leg node 2, according to the invention. Figure 6 also shows leg 5, as shown in Fig. 4 is shown. The Breitbein-Nodium 2 after Figures 5 and 6 has the same function and structure as the Nodium 2 according to the Figures 3 and 4 with the exception that the free end of the node body 20 is now offset laterally. The lower, free end of the sodium body 20 is thus laterally displaced. The threaded bolt 67 thus no longer runs through the longitudinal axis of the connecting piece 21, 22, but offset by 1 to 8 centimeters, but still essentially perpendicular to the main plane H. The legs 5 are placed outwards with respect to the frame 10 due to the wide-leg design. The status of the frame structure 1 is thus increased, thereby reducing the tendency of the frame structure 1 to tilt. In addition, the frame construction 1 can be stacked by raising the legs 5 with the legs 5 mounted, since the legs 5 run offset to the frame 10.

Figures 7 and 8 show a perspective view and a frontal view of an example of a spherical sodium 2, not according to the invention. Figure 8 also shows leg 5, as shown in Fig. 4 is shown. The ball-Nodium 2 after Figures 7 and 8 has the same function and structure as the Nodium 2 according to the Figures 3 and 4 with the exception that the nodule body 20 is now essentially spherical. In the region of the recess 66, the ball 20 is of course flattened by the material that is removed. A mouth surface of the recess 66 forms the flat side of the ball 20. A diameter D _{N of} the ball 20 is approximately one and a half to twice as large as a diameter of the connecting pieces 21, 22.

Figures 9 to 14 show a second embodiment of a node 2 with a pivotable leg 5, according to the invention. Figure 9 shows the leg 5 in a folded-out position and blocked by a locking element 7 according to a first embodiment in a locking position. Figure 10 shows a perspective view of the node 2 with the leg 5 in the situation after Fig. 9 , The swivel leg 5 after Figures 9 to 14 has two parallel leg legs 50. For the sake of clarity, only one of the legs 50 is shown in FIGS Figures 9 to 14 shown. The leg legs 50 are bent in the upper region, so that the leg 5 in the extended position Fig. 9 is placed outwards, which increases the standing width of the frame structure 1 and results in a significantly enlarged total standing area.

The legs 50 are mounted rotatably about the connecting pieces 21, 22 on the Node 2 and between an unfolded position Fig. 9 and a collapse position Fig. 14 pivotable inwards against the main plane H. The sockets 21, 22 meanwhile remain rotationally fixed in the respective internodes 4. Between the legs 50, the locking element 7 is slidably held in a bearing 70 fixedly attached to the legs 50. The locking element 7 is designed as a bolt which is displaceably mounted perpendicular to the pivot axis A of the connecting pieces 21, 22. For this purpose, the locking element 7 is guided in a locking recess 780 which is mounted in the bearing 70 and feeds directly onto the central axis A of the connecting pieces 21, 22. At the end of the connection piece, the bolt recess 780 opens into an almost semicircular rotation recess 54 which extends around the connection piece 21, 22 and which is approximately 1 centimeter deep in the radial direction with respect to the central axis A of the connection piece 21, 22 and is also located in the bearing 70. The locking element 7 now lies in the locking recess 780, which is locked away from the sodium, so that a compression spring 78 can be inserted between the locking element 7 and the bottom of the locking recess 780, which partially moves the locking element 7 out of the locking recess 780 into the rotating recess 54 into the locking position to Fig. 9 suppressed. The locking element 7 is thus biased by spring 78.

The locking element 7 has an end section 71 which tapers distally towards the free end on the connecting piece side. Links in Fig. 9 this end section 71 has a first locking stop 79, which in Fig. 9 stands to the left in the rotation recess 54.

Node 2 also has a cam 23 protruding into partial annular space 54, which approximately fills space 54 in the radial direction. When the leg 5 rotates, the stop cam 23, which is non-rotatably connected to the connecting pieces 21, 22, moves in the rotation space 54. The cam 23 has a radially in the space 54, to the left in FIG. 9 aligned first inner rotation stop 28. At an end of the cam 23 opposite the first inner rotation stop 28, a first outer rotation stop 25 directed to the right is arranged. At an inner circumferential end, the partial annular space 54 introduced in the bearing 70 has a second inner rotation stop 58 and the outside has a second outer rotation stop 55. Here, the inner rotational stops 28, 58 define the unfolded position by abutment against one another Fig. 9 and the outer rotation stops 25, 55 by abutting one another after the folding position Fig. 14 , The folding positions are thus defined by the stop of the cam 23 on the bearing 70, which is part of the leg 5.

A circumferential length of the cams 23 and the inner half of the partial annular space 54 are now dimensioned such that the cam 23 present at the first inner stop 58 is also present on the first locking stop 79 of the locking element 7 which is in the locking position. The contact surface between 25 and 79 runs essentially radially, so that the cam 23, even when force is exerted on the leg 5, cannot press the locking element 7 against the force of the compression spring 78 into the locking recess 780. Thus, the folding leg 5 is behind Fig. 9 locked securely in the unfolded position.

In one development, the cam 23 is enclosed, preferably in a cap 230. Figure 25 shows the enclosed cam 23 in a perspective view of the nodule 2, Figure 26 shows the Node 2 with the cap 230 in a side view. This cap 230 can be used to optimize the sliding and / or wear properties of the cam 23 moved in the partial annular space 54.

The cap 230 can cover a side flank of the cam 23 directed in the running direction of the cam 23. In particular, the side flank, which is in contact with the locking element 7 when the folding leg 5 is open, can be covered. However, the cap 230 preferably covers both side flanks in the running direction of the cam 23. It is particularly preferred if the upper side of the cam 23, which is perpendicular to the running direction of the cam 23, is also covered by the cap, as in FIGS Figures 25, 26 shown.

In a further development, the cap 230 can cover the entire cam 23.

The cap 230 is preferably shaped in such a way that it can be clamped onto the cam 23 and is stuck there for the intended use. In the particularly preferred embodiment, the clamp cap 230 can be pushed onto the cam 23 and is designed such that it clamps on the cam 23 in the end position via a clamping force. For this purpose, the cap 230 can be made of a resilient material, for example.

The cap 230 can be made from metal, in particular from steel, preferably from spring steel or spring bronze.

Such a cap 230 prevents the cam 23 and its counterpart from jamming on the sodium 2, which is preferably made of aluminum. In the embodiments according to the Figures 9 to 21 this counterpart is given by the wall sections of the leg 5 delimiting the partial annular space 54, along which the cam 23 runs. Such jamming can be caused, for example, by the micro-vibrations that occur during use of the trampoline. In extreme cases, such a jamming can block the mechanics in such a way that normal finger pressure is no longer sufficient to pull the locking cam 23 back at the push of a button in order to enable the folding leg 5 to be folded in or out. The cap 230 helps prevent such jamming. Moreover, the premature wear of the cam 23 can be avoided by the edging and the sliding properties can be optimized.

In a further development, a material layer 211 (see FIG. Fig. 25 ) be provided. The leg sections 50 (see e.g. Fig. 27, 28 ) can then be pushed onto this material layer 211 and move during the folding processes on the material layer 211. This material layer 211 preferably serves simultaneously as an axial and radial bearing and improves the pivot bearing of the folding leg 5 in several ways. Optimization of the rotary movement, the bearing precision and / or durability of the bearing can be achieved.

In one embodiment, the material layer 211 can be pressed into both half-shells of the leg 5 or, in another embodiment, can be applied to the connecting pieces 21, 22.

The material layer 211 can consist of plastic or metal. It is preferably provided as a one-piece molded part.

The material layer 211 has a protective function for the contact surfaces. For example. a leg section 50, which is made of metal, in particular aluminum, can be protected from compression deformation. The material layer 211 also brings about greater blocking precision in the folded-in as well as in the unfolded state of the leg 5, thus reducing the play when the leg 5 is folded in or out.

Based on Fig. 10 it will now be explained how the folding leg 5 can be unlocked. For this purpose, an actuating element 8 with a push button 80 is provided. The push button 80 projects through an upper region of the leg 50 (not shown) and can thus be pressed from the outside in the direction of the central axis A of the connecting pieces 21, 22 into a recess 72 of the locking element 7 against the middle of the leg. This is the folding mechanism easy to use with one hand. As in Fig. 10 can be seen, the actuating element 8 is configured as a beveled cylinder remote from the pushbutton, with a tip of the cylinder lying on the side of the central axis A, so that the inclined surface provides a control curve 81 which engages on a laterally projecting pin 74 of the locking element 7. If the push button 80 is now pressed in the A direction, the curve 81 runs onto the pin 74 and presses it against the force of the spring 78 into the depth of the locking recess 780. As a result, the locking element 7 is pulled out of the rotation space 54, the rotation space 54 is released as in Figures 11 and 12 shown, and the leg 5 can be pivoted.

The actuating element 8 can provide two curves 81, which grip two pins 74 arranged opposite one another, so that an inclination of the locking element 7 for jamming when moving is minimized.

If you now release the push button 80, the locking element 7 springs again against the rotation space 54 and abuts with a distal end 76 (see FIG. Fig. 11 ) on the cam 23, as in Fig. 13 shown. As soon as the cam 23 has released the mouth area of the locking recess 780 on its way to the second outer rotational stop 55 and contacts the second outer rotational stop 55 with its first outer rotational stop 25, the locking element 7 can again engage in the partial annular space 54. At the same time, the push button 80 moves outward along the pin 74 and is ready for a new actuation.

That after Fig. 14 Locking element 7 engaging in the rotation space 54 then sets its second locking stop 75 transversely into the partial annular space 54, so that the cam 23 adjusts in the folding position with its first inner stop 28 on the locking element 7 Fig. 14 is blocked.

Between the end face 76 of the locking element 7 (see FIG. Fig. 11 ) and the nozzle 21, 22 is left a distance, so that a free space 77 is created. The free space 77 allows the locking element 7 to be readjusted automatically by the spring 78 when the elements are deformed in use, so that the cam 23 moves into position Figures 9 and 14 is each held free of play between the stops 58, 79 and 55, 75. For this reason, the contact surfaces 25, 79 and 28, 75 are not exactly radial to the central axis A, but are inclined so slightly that such self-adjustment is possible, but the locking element 7 is not released by the cam 23 when the leg 5 is subjected to torque from the locking position the bolt recess 780 is pushable.

Like from the Figures 9 to 14 can be seen, the folding leg 5 is rotatable about a center M of the connecting piece 21, 22 or the frame cross section through which the pivot axis A runs.

Also in the third embodiment of a node 2 with the pivotable leg 5, according to the invention, according to the Figures 15 to 21 the leg 5 is pivoted about the longitudinal axis of the connecting pieces 21, 22.

In this embodiment, a locking element 7 is presented according to a further type, wherein a securing element 9 is further provided for securing the locking position. Reference will now be made in each case to the embodiment according to the description Figures 9 to 14 taken. Unless otherwise stated, the functioning of the elements with the same designation is the same.

Again, an outward pivot leg 5 with legs 50 is proposed. Again, only one leg 50 is shown and the bearing 70 is arranged between the legs 50. In the bearing 70, the bolt recess 780 is provided, which must be correspondingly wider due to the stronger bolt 7. The connecting pieces 21, 22 are again connected in a rotationally fixed manner to the cam 23 engaging in the rotation space 54 of the bearing 70. Here, the inner rotation stops 28, 58 define the fold-out position in an analogous manner by abutment against one another Fig. 15 and the outer rotation stops 25, 55 by abutting one another after the folding position Fig. 21 , Again, the locking element 7 is in the locking position Fig. 15 biased by a compression spring (not shown). The compression spring is now not under the locking element 7 as in Figures 9 to 14 , but in a spring recess 781 in the locking element 7 Figures 15 to 21 accommodated. The compression spring presses again with one end on the bearing 70 and with the other end from the inside against the locking element 7, so that the latter is held in the locking position.

Because of the thicker bolt 7, the cam 23 is behind Fig. 15 narrower than that after Fig. 9 ,

Again, the locking element 7 can be brought into the locking recess 780 against the spring force of the compression spring, so that the cam 23 or the leg 5 moves between the positions Figures 15 and 21 is movable. In this embodiment, however, the contact surfaces 25, 79 and 28, 75 are inclined so strongly to the radial direction that the intended, manual pivoting of the leg 5 of the cams 23 is able to build up a transverse force against the pressure direction of the compression spring, so that the leg 5 does not Push button 80 in the sense of Figures 9 to 14 is pivotable as a lever.

In order to prevent unwanted incorrect manipulation of the folding mechanism, a securing element 9 is provided. This securing element 9 again comprises a push button (here 90) which projects through the leg 50 (not shown) on one side and can thus be actuated from the outside and engages on a securing plate 91 on the other side. The push button 90 is still in position Fig. 15 biased by a further compression spring and pushable in the A direction to the other leg 50, whereby the plate 91 is displaceable against the middle of the leg.

A recess 782 is provided at the end of the locking element 7 remote from the connecting piece, where the opening into the compression spring opening 781 lies. How from Figures 16 and 18 is recognizable, two further locking legs 783, 784 protrude near the leg to the side of the mouth of the compression spring recess 781 and delimit the recess 782 on the leg side. With its free end face, the bolt leg 783 near the push button now acts as a second securing stop 785 with a first securing stop 93 directed against the locking element 7 on the securing plate 91. The locking plate 91 is in the locking position after Fig. 15 , the locking element 7 is in the locking position on the locking plate 91. So that the locking element 7 can not be moved and the fold-out position after Fig. 15 is save.

If, however, the push button 90 is pressed in from the outside, the securing plate 91 is pressed against the middle of the leg as in FIG Fig. 18 shown displaced, the mutual stop of the first and second securing stops 93, 785 is released and the locking element 7 can be moved by pivoting the leg 5 against the position Fig. 21 about the intermediate position Figure 19 to the retracted position Fig. 21 to be brought. The locking plate 91 then engages in the recess 782, which gives the locking element 7 the necessary travel space.

The embodiment according to Figures 9 to 14 can also with another fuse in the sense of the embodiment Figures 15 to 21 be equipped.

To ensure that the safety and operating function can also be carried out with one hand in this embodiment, the leg 5 then has two push buttons 80, 90 (one each in the upper region of the two legs 50). The push button 80 on one side actuates the retraction of the locking element 7, the button 90 on the other side releases the safety mechanism with the first safety stop 93 and thus releases the retraction option.

So that the linking of the functions works smoothly and the user can operate them intuitively, it is advantageous if the following framework conditions be respected:
When both buttons are pressed in with thumb and forefinger at the same time, one button 90 (securing component) immediately presses the locking bar 91 with the first securing stop 93 out of the sliding area of the locking element 7. About 2 millimeters to 3 millimeters of press travel should be sufficient here. In the case of the movement button 80 (movement component) on the other side of the leg 5, the first 2 millimeters to 3 millimeters of press travel are preferably "freewheeling" - that is to say the control cam 81 is designed such that the locking element 7 does not yet move on the freewheeling distance. In reflex, the user will press both buttons simultaneously with the same force. The fuse 9 is pushed out of the blocking position by pressing the safety button 90. When the two buttons 80, 90 are pressed in deeper, the locking element 7 becomes so far with the aid of the control curve 81 on the movement button 80 pushed out of the two possible locking positions that the leg 5 can be moved into the desired new position (unfolded for use or folded in for clearing away).

As soon as the two buttons 80, 90 are no longer pressed in, the buttons 80, 90 and the elements of the control and securing mechanism connected to them move back automatically into their starting position due to the action of suitably placed compression springs. To provide the necessary restoring force, both buttons / systems are equipped with smooth-running compression springs.

In a further development, an insert 500 can be inserted into the locking recess 780 in which the locking element 7 runs, which optimizes the movement of the locking element 7 in the locking recess 780. The sliding resistance and the abrasion of the locking element 7 can be reduced, for example, by an insert sheet or a sliding band, the insert at least partially lining the locking recess 780. The insert 500 preferably covers the bottom of the bolt recess 780. However, it is also conceivable that the insert 500 lines the entire transom recess 780 or only its walls without a floor.

In Figures 27 and 28 Preferred embodiments of the insert 500 are shown. For the sake of clarity, the leg leg 50 has been shown with broken lines and the Figures 27, 28 show the insert 500 in the installed position in this leg leg 50.

The insert 500 after Fig. 27 is inserted into the locking recess 780, in which recess the locking element 7 is moved. This insert 500 can be made from metal, in particular hardened metal, for example from a sliding band made from hardened metal, or from plastic and, as in FIG Figures 27 and 28 shown, contacting the narrow side of the locking element 7, that is to say lying on the bottom side in the channel 780, can be inserted into the channel 780.

In a further development, an extension 786 can be provided in the lower region of the channel 780, which is also provided in the insert 500 as a thickening 501, so that a positive fit is achieved between the thickening 501 of the insert 500 and the leg leg 50, which prevents that the insert 500 moves when the locking element 7 is moved. This is exemplified in Fig. 27 shown.

The insert 500 according to the embodiment according to Fig. 27 only extends in channel 780. In a further training after Fig. 28 This insert 500 can extend with first sections 502 into the partial annular space 54 and can be provided there for contacting the axial surfaces of the cam 23.

In a further development, the insert 500 can have second sections 503 adjoining the first sections 502, which limit the partial annular space 54 in the circumferential direction and thus form the rotation stops 55, 58 for the cam 23, as in FIG Fig. 28 shown. As a result, particularly robust rotational stops 55, 58 are provided, which prevents premature wear.

In a further development, the insert 500 can have a further third section 504, as in FIG Fig. 28 shown, extend into the recess in the leg leg 50 for receiving the node 2. The third section 504 preferably connects the first sections 502. It is particularly preferred if the insert 500 completely lines the recess in the leg leg 5 with the first and third sections 502, 504, so that the node 2 is completely surrounded by the insert 500. Depending on the embodiment, the insert 500 can then rest on the material layer 211.

Preferably, therefore, the locking element 7, particularly preferably also the cam 23 and advantageously also the node 2 (or the connecting pieces 21, 22) are guided in each case on the insert 500 when the folding leg 5 is opened or folded.

The insert 500 optimizes both sliding and wear properties of the folding leg 5.

The Figures 29 and 30 show a further embodiment of the locking element 7 and the push button 80. The locking element 7 again has a tapered end section 71 with the oblique stop surfaces 75, 79. The recess 72, into which the push button 80 can be pressed against spring force, is present centrally in the longitudinal direction in the locking element 7.

The body of the locking element 7 is made thinner in the region of the recess 72. This thin region 720 is designed in such a way that an inclined support surface 740 is provided on both sides of the locking element 7, which cooperates with an inclined counter surface 81 of the push button 80 (see FIG. Figures 29, 30 ) that the movement of the push button 80 running transversely to the longitudinal direction of the leg 5 is deflected into a movement of the locking element 7 running along the leg 5. The inclined support surface 740, as in FIG Fig. 29 shown, i.e. represents a ramp or inclined sliding surface on which the linear in and out of the recess 72 runs push button 80 along and so moves the locking element 7 over the inclined surface 740 in the longitudinal direction of the leg 5, as in connection with the Figures 10 and 12 has been described.

For this purpose, the push button 80 has a slot-shaped recess 82 into which the counter surfaces 81 are incorporated. In this context, the Fig. 30 directed. The in Fig. 30 the section of the slot 82 located at the top is so wide that the push button 80 clings to the thin region 720 on both sides, the in FIG Fig. 30 the section of the slot 82 located at the bottom is widened via a step 81 such that this lower part of the slot 82 can be pushed over the lower thick area 721 of the locking element 7. As in Fig. 30 It can be seen that the flat inclined surface 81 comes to lie on the oppositely shaped ramp-like support surface 740 when the pushbutton 80 is linearly displaced via the locking element 7, which causes said movement deflection.

The Figures 31 and 32 show a further embodiment of the locking element 7 and the push button 80. The locking element 7 is again provided with a recess 72, with the central area no longer being a thin area 720 as in FIG Figures 29 and 30 is provided, but the ramp 740 is formed laterally and on both sides on the locking element 7 or placed. Correspondingly, the part of the slot 82 of the push button 80 lying at the top in the figures is so wide that this slot section can be pushed over the locking element 72 in the depth of the recess 72. The slot 82 in the push button 80 according to the embodiment of the Figures 31 and 32 is therefore wider at least in the upper area than that in the Figures 29 and 30 is shown. The lower part of the slot 82 of the push button 80 according to the Figures 31 and 32 is again wider than the upper part, so that a step 81 is formed, which is opposite to the ramp 740, so that the push button 80 runs onto the ramp 740 during linear displacement.

In both embodiments Figures 29-32 the push button 80 and the locking element 7 are designed such that when the push button 80 is linearly displaced against the locking element 7, the latter is pressed downward. Again springs 78, as in Figures 9-14 shown, are used to reset the locking element 7 after releasing the push button 80 by pushing back the push button 80 against the cam 23.

Advantageously based on the embodiments Figures 29-32 is that a flat Contact is formed between the push button 80 and the counter surface 740 of the locking element 7 and the movement conversion from a horizontal movement of the push button 80 into a vertical movement of the locking element 7 is thus converted via an inclined sliding track. The compared to the embodiment Figures 10 and 12 Increased area contact leads to less stress on the contact surfaces. In addition, the contact between the push button 80 and the locking element 7 is better defined. LIST OF REFERENCE NUMBERS 1 frame construction 54 Rotationsausnehmung 10 frame 55 second outer rotation stop 2 wound dry 58 second inner rotation stop 20 Nodiumkörper 21, 22 Head start, neck 59 O-ring 211 cap 6 fastening device 23 cam 61 first part of 6 230 cap 62 second part of 6 25 first outer rotation stop or first locking stop on 2 64 cone section 640 free end of 64 641 Intervention recess in 640 28 first inner rotation stop on 2 642 offset 66 Deepening for 64 67 engaging member 4 internode 670 face 41, 42 End section of 4 43 Recess in 41 7 locking element 430 Contact area of 41 70 storage 44 adapter piece 71 tapered end section 45 Recess in 44 72 Recess in 7 720 central thin area721 proximal thick area 5 leg 50 leg thigh 73 second security stop at 71 500 insert part 74 pen 501 thickening 740 flat sloping surface, ramp 502 first section of 500 503 second section of 500 75 first locking stop 504 third section of 500 76 distal face of 7 77 free space 80 push-button 78 Compression spring for 7 81 cam 780 Bolt recess for 7 82 slot 781 spring recess 782 Recess for 91 9 fuse element 783 Bolt leg from 7 93 first security stop on 9 784 Bolt leg from 7 785 second security stop A swivel axis 786 enlarged recess, enlargement D _I Max. Diameter of 4 D _N Max. Diameter of 2 79 second locking stop on 7 D _R Max. Diameter of 10 H Main level of 10 M Cross-sectional center of 10 8th actuator

Claims (12)

1. A frame structure (1) for a mini trampoline, wherein the frame structure (1) comprises at least three nodes (2), at least three elongate internodes (4) and a plurality of legs (5), wherein in each case two of the internodes (4) are assigned to each other with end portions (40) and are rigidly connected to each other via one of the nodes (2) such that a closed frame (10) lying substantially in a main plane (H) is formed, and wherein each leg (5) is in each case fastened directly to one of the nodes (2), characterized in that all nodes (2) are designed as broad leg nodes and extend from the frame structure (1) parallel to the main plane (H) deformed outwards and towards the respective associated leg (5), so that all the legs (5) are in each case positioned outwards with respect to the frame (10).
2. The frame structure (1) according to claim 1, wherein the nodes (2) are provided with a first part (61) of a fixing device (6) and the legs (5) are provided with a second part (62) of the fixing device (6) for fixing each of the legs (5) to a respective one of the nodes (2), wherein the fixing device (6) is formed such that a connecting axis (V) of the fixing device (6), along which said leg (5) and node (2) are connectable, is substantially perpendicular to the main plane (H).
3. The frame structure (1) as claimed in claim 2, wherein the fastening device (6) is an engagement connection and one of the first or second parts (61, 62) of the fastening device (6) comprises a distally tapering cone portion (64) having a free end (640) and the other of the first or second parts (61, 62) comprises a corresponding conically outwardly widening recess (66), wherein an engagement recess (641), preferably a threaded hole, is recessed in the free end (640) of the cone section (64) and an engagement element (67), preferably a threaded bolt, corresponding to the engagement recess, is arranged in the recess (66), wherein the engagement element (67) is preferably completely countersunk in the recess (66).
4. The frame structure (1) according to one of the preceding claims, wherein the nodes (2) each have two oppositely projecting projections (21, 22) which extend in the main plane (H) and are preferably cylindrical and straight or curved, wherein the internodes (4) are each provided at the associated end sections (41, 42) with a recess (43), which recesses (43) are formed in such a way that in each case one of the said projections (21, 42) is inserted into one of the recesses (43) in a precisely fitting manner, wherein each projection (21, 22) preferably engages in the corresponding internode (4) via at least one maximum frame thickness, in particular via at least 2 centimetres, preferably at least 3 centimetres, preferably with planar contact, wherein preferably in the recesses (43) in the said end sections (41, 42) adapter pieces (44) are introduced which have recesses (45) for receiving the projections (21, 22) with a precise fit.
5. The frame structure (1) according to one of the preceding claims, wherein all legs (5) are mounted on the node (2) so as to be pivotable about a pivot axis (A) along a pivot movement between a fold-out and a fold-in position,
   the node (2) having a first outer rotational stop (25) and the leg (5) having a corresponding second outer rotational stop (55), the first and second outer rotational stops (25, 55) defining the unfolding position of the leg (5),
   and wherein the node (2) preferably has a first inner rotational stop (28) and the leg (5) preferably has a corresponding second inner rotational stop (58), wherein the first and second inner rotational stops (28,58) define the fold-in position of the leg (5).
6. The frame structure (1) according to the preceding claim, wherein the pivot axis (A) of the pivotable leg (5) extends through a frame cross-section centre (M).
7. The frame structure (1) according to one of the two preceding claims, comprising a locking element (7), which locking element (7) is mounted displaceably on the leg (5) or on the node (2) along a locking movement between a release position and a locking position extending substantially perpendicularly to the pivot axis (A), the locking element (7) blocking the pivoting movement in the locking position and releasing the pivoting movement in the release position.
8. The frame structure (1) according to the preceding claim, wherein the locking element (7) is held under prestress in the locking position, wherein a first locking stop is arranged on the noeud (2), wherein the first locking stop is preferably the first outer rotational stop (25), wherein a second locking stop (79) is arranged on the locking element (7), wherein a contact surface between the first and the second locking stop (25, 79) is substantially parallel to the locking movement, and wherein an actuating element (8) is provided which can be manually actuated from the outside and which, when actuated, transfers the locking element (7) from the locking position into the release position.
9. The frame structure (1) according to claim 8, wherein a first locking stop is arranged on the node (2), wherein the first locking stop is preferably the first outer rotational stop (25), wherein a second locking stop (79) is arranged on the locking element (7), a contact surface between the first and the second locking stop (25, 79) being arranged at an angle to the locking movement in such a way that the locking element (7) can be pressed from the locking position into the release position by manual pivoting of the leg (5).
10. The frame structure (1) according to one of claims 8 or 9, further comprising a securing element (9), wherein a first securing stop (93) is provided on the locking element (7) and a second securing stop (73) is provided on the securing element (9), wherein the securing element (9) is movable along a securing movement between a securing position and a release position, the first securing stop (93) being in the locking movement on the second securing stop (73) in such a way that the locking element (7) is blocked in the locking position, and the securing element (9) being movable manually from the outside into the release position so that the locking element (7) is released.
11. The frame structure (1) according to one of the claims 7 to 10, wherein the locking element (7) is designed to taper towards the front and in the locking position is surrounded on the end face by a free space (77).
12. A mini trampoline with a frame structure (1) according to one of the preceding claims, further comprising a jump mat which is stretched on the frame (10).

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