DE102022134550B3 - trampoline - Google Patents

Abstract

The invention relates to a trampoline with a surrounding frame (1) and with at least one leg (2) which has a tube section (22) and is pivotally connected to a base (8) of the surrounding frame (1) via a rod (31) accommodated in the leg (2). The leg (2) has an inner wall (26) and is movable relative to the rod (31) against a spring force. According to the invention, the rod (31) has a piston which rests against the inner wall (26) and can be designed as a membrane (38). The design according to the invention makes it possible to slow down the speed at which the leg (2) returns to the base (8) when the leg (2) is unfolded.

Description

The invention relates to a trampoline with a surrounding frame and with at least one leg which has a tube section and is pivotally connected to a base of the surrounding frame via a rod accommodated in the leg, wherein the leg has an inner wall and is axially movable relative to the rod against a spring force.

Such trampolines are known from the prior art. These are in particular so-called fitness trampolines, which have a jumping mat and rubber-elastic rope sections with which the jumping mat is suspended from a surrounding frame. The rope sections can be ring-shaped or open. It is also known to use steel springs instead of the rope sections, which connect the jumping mat to the surrounding frame.

The legs of the trampoline ensure that the frame - and therefore the jumping mat - is positioned at a certain distance from the ground on which the trampoline is placed. This distance allows the jumping mat to be moved when the trampoline is in use without it touching the ground during normal operation of the trampoline.

If a trampoline is not needed, it is often stored away and placed in a corner, for example. With rigid legs, i.e. legs that are rigidly connected to the surrounding frame, the trampoline takes up a certain amount of space. For this reason, trampolines with folding legs have been offered. These are legs that can be swiveled relative to the surrounding frame. When the trampoline is not needed, the legs can be folded down. This makes the trampoline narrow, so that it can be stored with advantages in terms of space. The invention is aimed at such trampolines with folding legs.

A trampoline with folding legs is, for example, from the WO 2011/083093 A1 known. The legs each have a tube section and a horizontal rod arranged in the tube section, which is pivotally connected to a base. In the known trampoline, the base is detachably connected to the surrounding frame. Trampolines are also known in practice in which the base is welded directly to the frame. When the legs are unfolded to use the trampoline, the respective leg overlaps the base and is held in an upright position by the base. The leg is held in this position by the spring force. To fold the leg down, the leg is pulled away from the base against the spring force in the axial direction of the leg. It can then be folded down, with the leg being pivoted around the base with the inner rod.

Other trampolines with folding legs are available from EP 3 662 977 A1 , the CN 2367337 Y , the CN109843392A and the EN 10 2015 115 040 A1 known.

Trampolines with folding legs have generally proven to be effective. However, it has been found that the handling of the folding leg can be improved. In particular, there is a certain risk of injury with the known designs due to the sometimes very strong spring pre-tension. This is also due to the fact that when the leg is unfolded, a gap is created between the base and the leg in which the user can get trapped.

Based on the known state of the art, the invention is based on the object of improving the handling of folding legs.

To achieve this object, the trampoline mentioned at the outset is characterized according to the invention in that the rod has a piston resting on the inner wall, which is movably arranged in the leg.

The piston on the rod reduces the return speed of the leg, which is particularly relevant when the leg is placed on the base. According to the invention, the piston is arranged so that it can move in the leg. During the relative movement between the piston and the leg surrounding the piston, air is displaced. This is because the piston rests against the inner wall. During the relative movement, the piston slides along the inner wall. The resulting air displacement on the one hand and the friction on the other ensure a reduction in the return speed of the leg, whereby the friction can be kept relatively low depending on the design of the piston. The speed reduction significantly improves handling and at the same time reduces the risk of injury. Unlike in the prior art, the leg can no longer snap back towards the base at high speed when released, but instead moves back to its starting position at a slower speed.

The piston can be designed in such a way that air flows past between the inner wall and the piston during movement relative to the pipe section. It can also be designed in such a way that it seals against the inner wall so that air is displaced during relative movement. The piston can also be designed in such a way that when the pipe section moves relative to the rod in one direction, air is displaced and air flows past between the piston and the inner wall in the other direction. It should be noted that the above variants are ideal solutions. In practice, mixed forms can also occur depending on the material and tolerances, for example in the form of predominantly displacement with a proportion of bypass flow or vice versa.

The piston is preferably coupled to the rod. It therefore moves with the rod, or rather, it remains in position with the rod, while the leg is moved relative to the rod. The movement takes place in the axial direction of the leg. A slight tilting position of the leg is possible depending on tolerances.

The position of the piston is largely freely selectable. However, the prerequisite is that the leg has sufficient freedom of movement to be pulled off the base. The piston must be able to slide along the inner wall within this freedom of movement. It has proven to be particularly advantageous in terms of construction to arrange the piston at a free end of the rod. The free end is the opposite end of the rod to the end that is hinged to the base. The free end therefore protrudes into the leg. Mounting the rod in the leg is also particularly advantageous if the piston is arranged at the free end of the rod.

A preferred embodiment is characterized in that the piston is designed as a flexible membrane, which preferably widens in the direction away from the rod and/or can be designed to be flexible. Such pistons are known from bicycle pumps and have the particular advantage that they can be pulled very quickly in one direction. The air then passes from one side of the membrane between the membrane and the inner wall to the other side of the membrane. If the piston is moved in the other direction (or the leg is moved in the other direction), the membrane seals against the inner wall. This is made possible by the membrane expediently widening in the direction away from the rod.

Preferably, the base has a pivot axis to which the rod is hinged, as will be explained in more detail later. The membrane expediently opens and/or widens in the direction away from the pivot axis.

The air is guided out of the leg in one direction through the piston. For this purpose, the leg advantageously has at least one vent opening. The speed of movement can be adjusted depending on the size of the vent opening, whereby the speed of movement also depends on the spring force that preloads the leg into its starting position. In a preferred embodiment, the factors of spring force and size of the vent opening therefore determine the return speed of the leg. The flow cross-section of the at least one vent opening is expediently smaller, preferably significantly smaller, than the cross-section of the pipe section. The flow cross-section is therefore preferably selected so that the displaced air can only flow out slowly, so that the leg can only move to the base at a slower rate.

According to the invention, the leg (fixed to the base) is axially movable relative to the base against a spring force. The leg can therefore be pulled off the base against the spring force. Conversely, the leg (in its unfolded position) is advantageously held on the base by the spring force. Preferably, the rod is arranged within a spiral spring and has a first stop with which the rod is supported on the spiral spring. This creates a compact and easy-to-assemble construction. This is particularly true if the first stop is located directly under the piston, which is considered advantageous. The first stop can simultaneously support the membrane mentioned above.

The leg conveniently has a second stop for the spiral spring. So if the leg is pulled away from the base, the spring is compressed between the first and second stops. When the leg is released, the spring relaxes again.

According to the invention, the leg has a tube section. This can be designed, for example, as a metal tube, which preferably has a round cross-section. The tube section not only offers the option of accommodating the rod and optionally other components such as a spring, but also offers the option of inserting the components into the tube section through one end or both ends of the tube section. To close the leg, it is proposed that the leg expediently has a lid at its end opposite the base. The lid can have a larger diameter than the tube section, so that the leg rests on the ground with the lid when the trampoline is in use. The lid is preferably inserted into the leg or tube section. It is made, for example, of plastic or rubber to provide a non-slip base.

It has already been mentioned above that it is advantageous if air can escape from the leg. At least one vent opening is advantageously used here. It is considered particularly advantageous if the at least one vent opening is formed between the pipe section and the cover. For this purpose, the cover can, for example, form a recess which, together with the leg, forms the at least one vent opening.

In a further development of the invention, it is proposed that the inner wall is formed by a first insert which is inserted into the pipe section. Preferably, the piston is arranged movably in the first insert. Such a construction has considerable advantages. Firstly, the insert can be designed as an injection-molded part. This is simple to manufacture. It is also advantageous in terms of manufacturing that the insert can be inserted into the pipe section. The insert can have a shoulder which rests on a free end of the pipe section. An exact insertion depth is therefore defined. Furthermore, the inner wall of the insert can easily be manufactured with the desired tolerance. This is particularly true if the first insert is made of plastic, which is considered advantageous.

Preferably, the first insert has a first end through which the piston is preferably inserted. Alternatively or additionally, the first insert has an opposite second end through which the rod passes. Preferably, the rod is mounted so that it can be moved longitudinally at the second end. In this way, the insert can be assigned several functions, namely a guide function for the piston and, advantageously, a centering function for the rod. The mounting of the rod stabilizes the rod when handling the leg, which means that the leg is stabilized when pivoting.

Advantageously, the second end forms a second stop on which the spiral spring is supported. The second stop forms a compact construction unit together with the spiral spring. Together with the piston, the rod and the spiral spring, a functional unit can be provided which is pre-assembled and inserted into the pipe section.

In an advantageous embodiment, a second insert is inserted into the tube section, with which the leg can be attached to the base. The second insert strengthens the leg considerably and ensures that it does not expand.

It is understood that the second insert is independent of the first insert, so the first and/or the second insert can be inserted into the pipe section.

Preferably, the second insert is made of plastic. The second insert can provide an excellent fit so that the leg sits firmly on the base. The second insert conveniently forms a shoulder that rests on one end of the tube section. If the first insert is used in addition to the second insert, the first insert is inserted into a first end of the tube section and the second insert is inserted into a second end of the tube section.

Preferably, the rod is mounted in the second insert so that it can be moved lengthwise. This creates additional stability when the leg is pivoted.

In addition, the rod can be mounted in the second insert in a rotationally fixed manner. This means that the leg cannot be rotated when it is removed from the base, for example to be folded down. This has the advantage, among other things, that the leg always remains correctly aligned, which can be important, for example, for the engagement of the base in the leg.

A preferred embodiment is characterized in that the leg can be pivoted in a pivot plane and has two lateral guide lugs which, when the leg is unfolded, engage in lateral recesses in the base. This preferably positive engagement gives the assembly additional stability. The guide lugs and/or the recesses can be created particularly advantageously if they are made of plastic. This means, for example, that the second insert described above forms the guide lugs, while the base forms the recesses.

Additionally or alternatively, it can be provided that the leg can be pivoted in a pivot plane and has a projection arranged in the pivot plane, which engages in a recess when the leg is in the unfolded state. This central projection also provides additional stability. In particular, however, it is also able to stabilize the folding up and down process of the leg, namely by the base having a free end with a front and preferably slot-like opening, and by the projection engaging in the opening when the leg is in the unfolded state. Preferably, the projection also engages in the slot-like opening during the folding movement. This allows the leg to be guided additionally during movement, which provides particular movement stability.

The invention provides a trampoline that has a high degree of flexibility due to the foldability of the legs. Stability is particularly important when unfolded. But even when folded down, i.e. when the legs are folded up, it is advantageous if the legs remain in the folded down position, even when the trampoline is moved for storage, for example. For this purpose, the base is advantageously formed by a lower part with two centering lugs that grip the leg on both sides when it is folded down. The leg is therefore received between the centering lugs when folded down and is expediently clipped between the two centering lugs. The centering lugs are arranged at a distance from the base, which stabilizes the storage of the leg when it is folded down.

• 1 in einer schematischen Darstellung eine perspektivische Ansicht eines erfindungsgemäßen Trampolins, wobei die Beine des Trampolins aufgeklappt sind;
• 2 in einer schematischen Darstellung eine perspektivische Ansicht des Trampolins nach 1 ohne Sprungmatte, wobei die Beine des Trampolins abgeklappt sind;
• 3 in einer schematischen Darstellung eine auseinandergezogene Ansicht eines Details des Trampolins (ohne Bein);
• 4 in einer schematischen Darstellung eine auseinandergezogene Ansicht eines Beins mit darin befindlichen Komponenten sowie einer Basis;
• 5 in einer schematischen Darstellung eine perspektivische Ansicht der in einem Bein angeordneten Komponenten im zusammengesetzten Zustand, wobei das Bein lediglich strichliniert angedeutet und von einer Basis abgehoben ist;
• 6 in einer schematischen Darstellung eine Schnittansicht des Beins im aufgeklappten Zustand des Beins;
• 7 in einer schematischen Darstellung eine Schnittansicht analog 6 im abgeklappten Zustand des Beins;
• 8 in einer schematischen Darstellung eine perspektivische Ansicht eines Beins im aufgeklappten Zustand;
• 9 in einer schematischen Darstellung eine perspektivische Ansicht des Beins nach 8 in einem abgehobenen Zustand;
• 10 in einer schematischen Darstellung eine perspektivische Ansicht des Beins nach 8 in einem teilweise abgeklappten Zustand; und
• 11 in einer schematischen Darstellung das Bein analog 10 in einem vollständig abgeklappten Zustand.

The invention is explained in more detail below using a preferred embodiment in conjunction with the attached drawing. The drawing shows:

• 1 in a schematic representation a perspective view of a trampoline according to the invention, wherein the legs of the trampoline are unfolded;
• 2 in a schematic representation a perspective view of the trampoline according to 1 without jumping mat, with the legs of the trampoline folded down;
• 3 in a schematic representation an exploded view of a detail of the trampoline (without leg);
• 4 in a schematic representation an exploded view of a leg with components therein and a base;
• 5 in a schematic representation, a perspective view of the components arranged in a leg in the assembled state, wherein the leg is only indicated by dashed lines and is raised from a base;
• 6 in a schematic representation a sectional view of the leg in the unfolded state of the leg;
• 7 in a schematic representation a sectional view analogous 6 when the leg is folded down;
• 8th in a schematic representation a perspective view of a leg in the unfolded state;
• 9 in a schematic representation a perspective view of the leg after 8th in an aloof state;
• 10 in a schematic representation a perspective view of the leg after 8th in a partially folded state; and
• 11 in a schematic representation the leg analogous 10 in a fully folded state.

1 shows a trampoline according to the invention, which has a surrounding frame 1, a plurality of legs 2 and a flexible jumping mat 3. The jumping mat 3 is connected to the frame 1 via elastic rope sections 4 in such a way that it is held elastically within the frame 1. When jumping (or swinging) on the jumping mat 3, the rope sections 4 give way. Such a construction is basically known.

The legs 2 are foldable legs that can be folded 1 are unfolded. In this position of the legs 2, the trampoline is in use condition and can therefore be used for exercises.

2 shows the trampoline with the legs 2 folded down, whereby the jumping mat is not shown for reasons of clarity. The trampoline can be stowed away in this position. Because the legs 2 are folded down, it is very narrow, which is advantageous in terms of space. The folded down legs 2 point radially inwards from the frame 1.

3 shows a detail of the surrounding frame 1 with a support device 5. The support device 5 extends laterally from the frame 1 in the position of use and has a first leg 6 extending downwards (in the position of use).

The support device 5 preferably has a second leg 7 from which the first leg 6 extends. The first leg 6 advantageously extends downwards from the second leg 7. The second leg 7 is expediently connected to the frame 1 and extends laterally from the frame 1 when the trampoline is in use.

The trampoline has a base 8 onto which a leg is detachably attached or can be attached, as will be explained in more detail below. The base 8 is made of plastic, for example.

At this point, it should be noted that it is not important for the invention where exactly the base 8 is arranged in relation to the frame 1. It can therefore also be arranged directly underneath the frame 1 in the position of use, i.e. not to the side of the frame 1. It is important that the leg 2 can be plugged onto the base 8, whereby in the position of use of the trampoline the respective leg 2 is plugged onto the base 8 and to store the trampoline the leg 2 can be pulled off the base 8 and folded down.

The support device 5 is connected to the base 8 in the assembled state. The leg 6 preferably engages in the base 8. This advantageously creates a form-fitting, stable connection.

So that the leg 6 can engage in the base 8, the base preferably has a receptacle 9. The receptacle 9 is advantageously designed such that the leg 6 is received in the receptacle 9 in a form-fitting manner.

The base 8 is advantageously formed by a lower part 10. The lower part 10 has a recess 11 in which the surrounding frame 1 is accommodated. Together with an upper part 12, the lower part 10 forms a housing in which the support device 5 (in the assembled state) is accommodated.

In the present embodiment, the lower part 10 and the upper part 12 are screwed together. For this purpose, the lower part 10 has a threaded projection 13 that extends through an opening 14 of the support device 5. The lower part 10 and the upper part 12 are screwed together by means of a screw 15 that extends through the threaded projection 13. The engagement of the threaded projection 13 through the opening 14 of the support device 5 gives the connection between the housing and the support device 5 particularly good stability.

The reference number 16 designates a cap which, in the assembled state, is arranged on the upper part 12, in particular is clipped onto the upper part 12. The cap 16 overlaps the surrounding frame 1 and for this purpose has a recess 17 in which the frame 1 is received.

As already described, the base 8 is used to hold one leg 2 ( 2 ). The leg 2 is connected to the base so that it can pivot about a pivot axis 18. In the embodiment shown, the pivot axis 18 is supported on the base 8 and is, for example, glued or pressed into an opening 19. It passes through an axis opening 20 of the first leg 6.

In the embodiment according to the invention, the legs 2 are designed to be pivotable about the pivot axis 18, as is the case, for example, in 2 As can also be seen from 2 As can be seen, the leg 2 is held in the folded state between two centering lugs 21. 4 It becomes clear that the centering lugs 21 are attached to the housing, in particular to the lower part 10. This makes it possible for the centering lugs 21 to be made of a different material than the housing or the lower part 10. A different material can, for example, be more grippy than the material of the housing, so that the legs 2 are held particularly well in the folded-down state.

4 shows the components of a leg 2 in an exploded view, from which the individual components of the leg 2 can be seen. The leg 2 has an elongated tube section 22, which is preferably designed as a hollow cylinder. The reference number 23 designates a first insert, which is inserted into a first end 24 of the tube section 22. The first insert 23 has a shoulder 25, with which the first insert 23 is supported on the tube section 22. The shoulder 25 acts as a stop and limits the insertion depth of the first insert 23 in the tube section 22. The first insert 23 has an inner wall 26, which is preferably cylindrical.

The pipe section 22 has a second end 27 into which a second insert 28 is inserted. The second insert 28 has a shoulder 29 which limits the insertion depth of the second insert 28. The second insert 28 preferably also has a guide 30 for a rod 31 which is guided in the guide 30 so as to be longitudinally displaceable and preferably also rotationally fixed.

With the second insert 28, the leg 2 can be attached to the base 8. The second insert 28 advantageously overlaps the base 8, as is the case in connection with 6 will be described in more detail.

The second insert 28 has two lateral guide lugs 32 which, when the leg is in the unfolded state, engage in lateral recesses 33 of the base 8. The second insert 28 also has a projection 34 which interacts with a recess 35 formed in the base 8. The projection 35 engages in an opening 36 of the base 8 when the leg 2 is in the unfolded state.

The rod 31 is the connecting link between the leg 2 and the base 8 and thus the surrounding frame 1. For this purpose, the rod 31 has a pivot opening 37, with which the leg 2 is pivotally connected to the base 8. The pivot axis 18 advantageously extends through the opening 19 and the pivot opening 37. The rod 31 is preferably pivotable in the opening 36. The opening 36 allows the rod 31 to be pivoted relative to the base 8. For this purpose, it is preferably designed in the form of a slot, preferably opening radially inwards.

At the end of the rod 31 opposite the pivot opening 37, a piston is arranged, which in the present case is designed as a membrane 38, which is suitably concave and preferably widens outwards from the rod 31. The rod 31 is arranged within a spiral spring 39, which is supported on a first stop 40 of the rod. The first insert 23 forms a second stop 41 (see also 6 ), whereby the spiral spring in the assembled state is also supported on the second stop 41. The leg 2 can thus be pulled off the base 8 against a spring force of the spiral spring 39 and is held on the base 8 by the spring force.

The membrane 38 is supported on the inner wall 26. In one direction of movement, the membrane 38 seals against the inner wall 26. This is expediently the direction of movement of the leg 2 in the direction of the base 8. In the other direction of movement, the membrane 38 allows air to pass between itself and the inner wall 26. In the direction in which the leg 2 is pulled out, the air resistance is therefore advantageously lower.

The reference number 42 designates a cover which is inserted into the front of the leg 2, more precisely into the first insert 23. It can be made of rubber or plastic. In the direction in which the leg 2 is inserted, the air must escape from the leg 2, in this case from the first insert 23. For this purpose, at least one ventilation opening 43 is formed in the cover 42.

To protect the internal components of the leg 2, a third insert 44 is provided, which is arranged in the first insert 23 between the membrane 38 and the cover 42.

5 shows the leg construction according to the invention in an assembled state, with the tube section 22 shown in dashed lines so that the internal components are visible. The leg 2 is in a state removed from the base 8. In this state, the rod 31 is visible between the second insert 28 and the base 8. The spiral spring 39 is advantageously accommodated in the first insert 23 (see 6 ), so that the leg 2 is pulled off the base 8 against the spring force, which is considered to be advantageous. Furthermore, 5 It can be seen that the leg 2 is hinged to the base via the rod 31. The opening 36 is designed so that the rod 31 can be pivoted about the pivot axis 18 (see 4 ) can be swivelled, whereby 5 the opening 19 can be seen, into which the pivot axis 18 is inserted. Finally, 5 clearly that the first insert 23 is inserted into the first end 24 and the second insert 28 into the second end 27 of the pipe section 22. The first end 24 is the free end of the leg 2, with which the trampoline is supported on a surface. In 5 The leg construction is shown the other way around, i.e. so that the frame 1 lies on a surface and the legs 2 are pointing upwards. In this position, the legs 2 can be easily folded up and down.

6 shows the leg construction according to the invention in an unfolded state. In this state, the trampoline can be used for exercises. As a rule, the frame 1 is then aligned horizontally, although it should be noted that in some designs there are also positions in which the frame 1 can be slightly inclined.

The second insert 28 is placed on the base 8. The rod 31 is hinged to the base 8. The first insert 23 is inserted into the pipe section 22 and rests on the pipe section 22 with the shoulder 25. The spiral spring 39 is arranged between the first stop 40 and the second stop 41 (which is the bottom of the first insert 23). This pulls the leg 2 in the direction of the base 8.

The membrane 38 rests against the inner wall 26 of the first insert 23. In principle, the invention provides for the piston (which is designed here as a membrane 38) to rest against the inner wall 26. If no first insert 23 is provided, the piston can be supported on the inner wall 26 of the pipe section 22.

The leg 2 can be moved against the force of the spiral spring 39 in the direction of an arrow 45. This causes the leg 2 to be pulled off the base 8. In the present embodiment, the second insert 28 is disengaged from the base 8. During this movement, air flows between the inner wall 26 and the membrane 38. In the other direction, i.e. in the direction opposite to the arrow 45, the leg 2 reaches the base 8. In this case, air is displaced by the membrane 38 and flows through the at least one vent opening 43 (see 4 ) from leg 2. This slows down the return movement of leg 2.

7 shows the leg 2 in a folded state. In this state, the trampoline can be stowed away to save space. The leg 2 is pivoted around the pivot axis 18 and is positioned between the two centering lugs 21 (see 6 ) held.

As can be seen particularly well in this view, the spiral spring 39 is compressed between the first stop 40 and the second stop 41.

The 8th , 9 , 10 and 11 show a sequence of movements in which leg 2 moves from an unfolded position ( 8th ) into a folded position ( 11 ). For reasons of clarity, the trampoline is only shown in section and turned over, i.e. with legs 2 pointing upwards.

In 8th Leg 2 is in an unfolded position. In this leg position, the trampoline can be used for exercises on the trampoline.

In 9 the leg 2 is removed from the base 8. In this leg position, the rod 31 is visible, by means of which the leg 2 is pivotally connected to the base 8.

In 10 the leg 2 is partially folded down, whereby the leg 2 is pivoted in a pivot plane as indicated by the arrow 46. From this illustration it can be seen that the leg 2 has a projection 34 arranged in the pivot plane, which in the unfolded state engages in a recess 35 of the base 8. The leg 2 also has two lateral guide lugs 32, which in the unfolded state engage in a form-fitting manner in lateral recesses 33 of the base 8.

In 11 the leg 2 is completely folded down and received between the two centering lugs 21. In this position, the projection 34 advantageously engages in the opening 36.

List of reference symbols

1

Frame

2

leg

3

Jumping mat

4

Rope sections

5

Support device

6

first leg

7

second leg

8th

Base

9

Recording

10

Bottom part

11

Recess (lower part)

12

Top

13

Threaded attachment

14

Opening (support device)

15

screw

16

cap

17

Recess (cap)

18

Swivel axis

19

Opening (base)

20

Axle opening

21

Centering nose

22

Pipe section

23

first use

24

first end

25

shoulder

26

Inner wall

27

second end

28

second use

29

shoulder

30

guide

31

pole

32

lateral guide nose

33

deepening

34

head Start

35

Recess

36

opening

37

Swivel opening

38

membrane

39

Spiral spring

40

first attack

41

second attack

42

Lid

43

Vent opening

44

third mission

45

Arrow

46

Arrow

Claims (16)

Trampoline, comprising: - a surrounding frame (1), - at least one leg (2) which has a tubular section (22) and is pivotally connected to a base (8) of the surrounding frame (1) via a rod (31) received in the leg (2), - wherein the leg (2) has an inner wall (26) and is movable relative to the rod (31) against a spring force, characterized in that - the rod (31) has a piston which rests against the inner wall (26) and is movably arranged in the leg (2). Trampoline after Claim 1 , characterized in that the rod (31) has a free end at which the piston is arranged. Trampoline after Claim 1 or 2 , characterized in that the piston is designed as a membrane (38) which preferably widens in the direction away from the base (8). Trampoline after one of the Claims 1 until 3 , characterized in that the rod (31) is arranged within a spiral spring (39) and has a first stop (40) with which the rod (31) is supported on the spiral spring (39). Trampoline after one of the Claims 1 until 4 , characterized in that the pipe section (22) has a cover (42) at its end (24) opposite the base (8), wherein at least one vent opening (43) is preferably formed between the pipe section (22) and the cover (42). Trampoline after one of the Claims 1 until 5 , characterized in that the inner wall (26) is formed by a first insert (23) which is inserted into the pipe section (22). Trampoline after Claim 6 , characterized in that the first insert (23) has a first end through which the piston is inserted and/or an opposite second end through which the rod (31) passes, wherein the rod (31) is preferably mounted so as to be longitudinally displaceable at the second end. Trampoline after Claim 4 and 7 , characterized in that the second end forms a second stop (41) on which the spiral spring (39) is supported. Trampoline after one of the Claims 1 until 8th , characterized in that a second insert (28) is inserted into the tube section (22), with which the leg (2) can be plugged onto the base (8). Trampoline after Claim 6 and 9 , characterized in that the first insert (23) is inserted into a first end (24) of the pipe section (22) and the second insert (28) is inserted into a second end (27) of the pipe section (22). Trampoline after Claim 9 or 10 , characterized in that the rod (31) is mounted in the second insert (28) so as to be longitudinally displaceable. Trampoline after one of the Claims 9 until 11 , characterized in that the rod (31) is mounted in the second insert (28) in a rotationally fixed manner. Trampoline after one of the Claims 1 until 12 , characterized in that the leg (2) is pivotable in a pivot plane and has two lateral guide lugs (32) which engage in lateral recesses (33) of the base when the leg (2) is in an unfolded state. Trampoline after one of the Claims 1 until 13 , characterized in that the leg (2) is pivotable in a pivot plane and has a projection (34) arranged in the pivot plane which, in an unfolded state of the leg (2), engages in a recess formed in the base (8). Trampoline after one of the Claims 1 until 14 , characterized in that the base (8) has a preferably slot-like opening (36) in which the rod (31) can pivot. Trampoline after one of the Claims 1 until 15 , characterized in that the base (8) is formed by a lower part (10) with two centering lugs (21) which surround the leg (2) on both sides in a folded-down position.

Images