WO2025099352A1

WO2025099352A1 - Edge structure for a mat of a trampoline, a trampoline and a mat for a trampoline

Info

Publication number: WO2025099352A1
Application number: PCT/FI2024/000021
Authority: WO
Inventors: Tapio MÄKELÄ; Markus LOHI
Original assignee: Acon Finland Oy Ltd
Current assignee: Acon Finland Oy Ltd
Priority date: 2023-11-10
Filing date: 2024-11-04
Publication date: 2025-05-15
Anticipated expiration: 2026-05-10
Also published as: FI20237190A1; FI131526B1

Abstract

The invention is an edge structure (110) for a mat of a trampoline. The mat comprises an edge of the mat (104) and a fabric of the mat (106). The fabric of the mat comprises an edge of the fabric of the mat (107) and two set of stripes. One set of stripes comprises stripes (108) parallel to the edge of the mat. The edge structure comprises a first support webbing (114) and a first stich (115). The first support webbing is fixed to the fabric of the mat by the first stich parallel to the edge of the mat. Distance to the edge of the fabric of the mat is more than the width of the first support webbing. The edge structure is formed by folding the fabric of the mat between the first stich and the edge of the fabric of the mat over the first support webbing.

Description

Edge structure for a mat of a trampoline, a trampoline and a mat for a trampoline

The invention relates to an edge structure for a mat of a trampoline, and the trampoline comprises a frame and a multitude of elastic members arranged between the frame and the mat, and the mat comprises an edge of the mat, a fabric of the mat and attaching arrangements for the elastic members, and the fabric of the mat comprises an edge of the fabric of the mat, two perpendicular set of stripes forming a mesh structure, and one set of stripes comprises stripes parallel to the edge of the mat and said parallel stripes comprise inner edges and outer edges, and outer edges are towards the edge of the fabric of the mat, and the edge structure comprises a webbing stripe stitched to the fabric of the mat, and at least one the attaching arrangement is attached to the webbing stripe.

BACKGROUND

Trampolines are commonly used in outdoor and indoor activities. Trampolines comprise a frame and a rebounding mat connected to the frame with stretching elements such as springs or similar elastic members.

There are different types of trampolines for different use. Outdoor trampolines have typically circular or rectangular shape, a diameter of 3 to 5 meters and the mat of said devices is located at least 60 to 100 centimeters above the ground and are generally used at home on backyards for jumping exercises and stunts on the said devices. Mini trampolines have a diameter of 100 to 150 centimeters and the mat of said devices is positioned 20 to 35 centimeters above the ground and are generally used at home or in gyms for 15 rocking, swinging and slight jumping exercises. Gymnastic trampolines are high performance rebounders used for gymnastic jumps and to perform acrobatics while bouncing on a trampoline. So called freestyle trampolines are high performance rebounders used by athletes for creative skills, jumps and stunts. There are also different types of trampoline mats. Mats for gymnastics trampolines and freestyle trampolines are optimized for high performance by increasing decreasing air resistance, while backyard trampoline mats are designed for safety and comfort.

Figure 1 shows an example of a trampoline 100. Figure shows a detail of the trampoline. The trampoline comprises a mat 101 , a frame 102, and elastic members 103. The mat comprises an edge of the mat 104 and attaching arrangements 105 for the elastic members. The elastic members are between the frame and the mat, i.e. one end of the elastic member is attached to the frame and another end to the attaching arrangement. The attaching arrangements are fixed to the edge of the mat. The attaching arrangements are, for example, loops of similar arrangements.

The trampoline mat is a flexible fabric or material stretched tightly across the frame of the trampoline to provide a safe and resilient surface. Trampoline mats are typically made from a durable, high-quality synthetic material like polypropylene or nylon. These materials are chosen for their strength, resistance to UV rays and weather, and ability to withstand constant bouncing. The mat fabric comprises a plurality of warp yarns and a plurality of weft yarns that are perpendicular to each other. Each yam comprises monofilaments and thus forms a strip like structure. The transverse strips, the warp yams and the weft yams, are interlaced to form a woven web or a mesh structure. Adjacent strips are separated to each other in such a way that there is spacing between strips. When the strips form the mat fabric, the spacings form holes in the fabric. One example of the trampoline mat is disclosed in patent publication US2652966. Trampoline mats and mat fabrics are also described in patent publications EP3992338 and US10500428. However, when the air permeability of a mat is increased, the surface is rougher, and the comfort and durability properties suffer. It is not easy to balance performance, durability and comfort of the trampoline mat.

There is a clear need for improving the durability of the mat and still maintain surface of the mat that is not overly rough.

BRIEF DESCRIPTION

The object of the invention is a solution that can significantly reduce the disadvantages and drawbacks of the prior art. In particular, the object of the invention is a solution where a durable trampoline mat is provided that is pleasant to use and provides good performance.

The objects of the invention are attained with a device that is characterized by what is stated in the independent patent claim. Some advantageous embodiments of the invention are disclosed in the dependent claims.

When reference is made in the text to the upper or the lower parts or respective directions such as down or up, above and below, or vertical or horizontal directions, a situation is described in which the trampoline comprising the mat according to the invention is in use. Also, when reference is made to the front, rear, top or side parts or directions, the trampoline is placed similarly and in such a way that the front side is generally used for jumping on the trampoline, and in case of a rectangular trampoline, the side is the longer side of the rectangular. When reference is made to the internal or external sides or direction inwards, the trampoline is placed similarly and the internal side is facing towards the centre of the mat and the external side is facing outwards the centre of the mat. When reference is made to the inwards or outwards directions, the trampoline is placed similarly and the inward direction is towards the centre of the mat and the outward direction is away the centre of the mat.

The invention is an edge structure for a mat of a trampoline. The mat comprises an edge of the mat and a fabric of the mat. The fabric of the mat comprises an edge of the fabric of the mat and two set of stripes. One set of stripes comprises stripes parallel to the edge of the mat. The edge structure comprises a first support webbing and a first stich. The first support webbing is fixed to the fabric of the mat by the first stich parallel to the edge of the mat. Distance to the edge of the fabric of the mat is more than the width of the first support webbing. The edge structure is formed by folding the fabric of the mat between the first stich and the edge of the fabric of the mat over the first support webbing.

In one embodiment of the invention is an edge structure for a mat of a trampoline. The trampoline comprises a frame and a multitude of elastic members arranged between the frame and the mat. The mat comprises an edge of the mat, a fabric of the mat and attaching arrangements for the elastic members. The fabric of the mat comprises an edge of the fabric of the mat, two perpendicular set of stripes forming a mesh structure. One set of stripes comprises stripes comprising inner edges and outer edges, and outer edges are at least partly towards the edge of the fabric of the mat. The edge structure comprises a webbing stripe stitched to the fabric of the mat, and at least one the attaching arrangement is attached to the webbing stripe. In one advantageous embodiment of the invention, the edge structure further comprises a first support webbing, a first stich, a second stich and auxiliary stiches. The first support webbing comprises a first edge and a second edge. The first edge is towards the edge of the mat, and width of the first support webbing is distance between the first edge and the second edge. The first support webbing is fixed to the fabric of the mat by the first stich in a position that is parallel to the edge of the mat and distance from the first edge to the edge of the fabric of the mat is more than the width of the first support webbing. The first stich is positioned in such a way that the first edge extends over the outer edge of one parallel stripe and the first stich is between said outer edge and the first edge, i.e. the first stich is close to the first edge. The edge structure is formed by folding the fabric of the mat between the first edge and the edge of the fabric of the mat over the first support webbing thus forming a folded part of the fabric of the mat. The folded part of fabric of the mat is stitched on the first support webbing by the second stich. The webbing stripe, the folded part of fabric of the mat and the first support webbing are stitched together by the auxiliary stiches.

In a second embodiment of the edge structure, the second stich is configured to stich the outermost parallel stripes, i.e. the parallel stripes that are closest to the edge of the mat. This feature improves stability of the first support webbing and thus durability of the mat.

In a third embodiment of the edge structure, the edge structure comprises a second support webbing, and the second support webbing is stitched over the folded part of the fabric of the mat. The second support webbing protects the rest of the edge structure.

In a fourth embodiment of the edge structure, the second support webbing comprises a first edge of the second support webbing and a second edge of the second support webbing, and width of the of the second support webbing is distance between the first edge of the second support webbing and the second edge of the second support webbing, and the width of the second support webbing is bigger than the width of the first support webbing. The second support webbing provides more rigidity for the edge structure and thus improves durability of the mat.

In a fifth embodiment of the edge structure, the width of the second support webbing is bigger than the folded fabric of the mat, i.e. the distance between the edge of the fabric of the mat and the edge of the mat.

In a sixth embodiment of the edge structure, the second support webbing is configured in such a way that the first edge of the second support webbing extends over the edge of the mat and the second edge of the second support webbing extends over the edge of the fabric of the mat.

In a seventh embodiment of the edge structure, the second support webbing is configured in such a way that the first edge of the second support webbing is between the edge of the mat and the attaching arrangement. This feature enhances the protection of the edge of the mat but still allows easy use of the attaching arrangements.

In an eighth embodiment of the edge structure, the webbing stripe is attached to the edge structure in such a way that the attaching arrangements extend over the edge of the mat. This feature also enhances the protection of the edge of the mat but still allows easy use of the attaching arrangements.

In a nineth embodiment of the edge structure, the webbing stripe extends on both surfaces of the mat, i.e. the webbing stripe goes around the edge of the mat. This feature uses the webbing stripe for protecting the edge structure.

In a tenth embodiment of the edge structure, the mat comprises a middle part of the mat and an periphery part of the mat, and the mesh structure of the mat comprises holes, and the periphery part of the mat is woven tighter than the middle part of the mat, i.e. the holes in the periphery part of the mat are smaller than the holes in the middle part of the mat, and the edge structure is configured to use at least part of the periphery part of the mat. This feature improves the effectiveness of the edge structure.

In an eleventh embodiment of the edge structure, the holes are rectangular.

In a twelfth embodiment of the edge structure, at least in some parts of the periphery part of the mat the holes are elongated and have longitudinal axes, and the longitudinal axes are parallel to the edge of the mat. This feature improves the effectiveness of the edge structure.

In a thirteenth embodiment of the edge structure, the width of the first support webbing is 10 - 50 mm. The inventors have found out that this range provides both good performance and easy manufacturing.

In a fourteenth embodiment of the edge structure, length of the first support webbing is such that it supports at least three adjacent attaching arrangements.

In a fifthteenth embodiment of the edge structure, the edge structure comprises at least one additional support webbing, and the additional support webbing is parallel to the first support webbing, and the additional support webbing is covered by the folded part of the fabric of the mat. The additional support webbings are used for improving effects of the edge structure. In one embodiment of the invention is a trampoline comprising a previously described mat having an edge structure.

In one embodiment of the invention is a previously described mat for a trampoline. The mat comprises a previously described edge structure.

It is an advantage of the invention that it provides an edge structure for a mat of a trampoline that improves safety by increasing durability of the mat. Also, the invention improves the bouncing effect of the mat by allowing bigger holes in the mat than conventional technique. The invention is also applicable both rectangular and circular trampolines.

Also, an advantage of the invention is that the mat using the invention can be manufactured using conventional production devices. Furthermore, the production is fast and cheap compared to previous methods.

It is a further advantage of the invention that it improves the stability of the elastic members.

DESCRIPTIONS OF THE FIGURES

In the following, the invention is described in detail. The description refers to the accompanying drawings, in which

Figure 1 shows an example of a trampoline,

Figure 2 shows an example of a mat using an edge structure,

Figure 3a shows a cross section of an edge of a conventional mat,

Figure 3b shows a cross section of the edge of the mat of Figure 3a with fabric fraying,

Figure 4a shows an example of an edge structure of a mat according to an embodiment as a cross section,

Figure 4b shows the edge structure of the mat of Figure 4a as a cross section,

Figure 4c shows the edge structure of the mat of Figure 4a as a cross section, and Figure 5 shows a second example of an edge structure of a mat according to an embodiment as a cross section.

DETAILED DESCRIPTIONS OF THE FIGURES

The embodiments in the following description are given as examples only and someone skilled in the art can carry out the basic idea of the invention also in some other way than what is described in the description. Though the description may refer to a certain embodiment or embodiments in several places, this does not mean that the reference would be directed towards only one described embodiment or that the described characteristic would be usable only in one described embodiment. The individual characteristics of two or more embodiments may be combined and new embodiments of the invention may thus be provided.

Figure 2 shows a mat 201 for a trampoline. The mat comprises an edge of the mat 104, fabric of the mat 106 and an edge structure 110. The edge structure circumvents the mat and comprises the edge of the mat. In this example, the mat is rectangular and having four sides of the mat: two long sides and two short sides. The mat fabric comprises a plurality of warp yams and a plurality of weft yarns Between adjacent warp yarns is warp spacing, and between adjacent weft yarns is weft spacing. Each warp yam comprises at least three monofilament yams and each warp yam comprises at least three monofilament yams, and the warp yams are interwoven with the weft yams. The warp yams and the weft yams are perpendicular to each other, and they form a mesh structure comprising holes 125. The warp yams and the weft yams are strip like structures. For explaining the invention near the edge of the mat the stripe like structures are divided as parallel stripes 108 and transverse stripes 109. The parallel stripes are parallel to the edge of the mat and the transverse stripes are transverse to the edge of the mat. It must be noted that on opposite sides (for example the long sides) the parallel stripes are warp yams and on adjacent opposite sides (for example the short sides) the parallel stripes are weft yams. The terms the parallel stripes and the transverse stripes are used for describing positions of the stripes near the edge of the mat and explaining formation of the edge structure.

In this embodiment, the mat 201 comprises a middle part of the mat 123 and a periphery part of the mat 124. The periphery part of the mat is woven tighter than the middle part of the mat, i.e. the holes 125 in the periphery part of the mat are smaller than the holes in the middle part of the mat. The edge structure 110 is configured to use at least part of the periphery part of the mat. It must be noted that the edge structure 110 is also applicable to mats that have uniform fabric of the mat, for example, the mat of figure 1. The mesh structure is constructed in such a way that the holes are rectangular. In this embodiment, the periphery part of the mat comprises holes that are elongated and have longitudinal axes, and the longitudinal axes are parallel to the edge of the mat 104. Using the periphery part of the mat comprising smaller holes than the holes in the middle part of the mat improves the durability of the mat and still allows larger holes in the middle part of the mat.

It is well known that holes in trampoline mat fabric give many advantages. Because trampolines are often used outdoors, rainwater can accumulate on the surface of the mat, making it slippery and potentially dangerous. The holes in the fabric of the mat allow rainwater to drain through, preventing puddles from forming and improving traction for the jumper. This helps maintain a safer bouncing surface in wet conditions. The holes also allow for airflow through the mat and reduce air resistance when a user is bouncing on the trampoline and thus improves the performance of the trampoline. This is especially important for inground or sunken trampolines where free airflow is not possible around the perimeter. Usually, the edges of a trampoline mat are formed by folding a small strip of mat fabric at the edge of the mat and stitching the folded part over the mat fabric, i.e. the fabric is doubled at the edge. A webbing stripe is stitched at the edge of the mat to allow attaching elastic elements between the mat and frame of the trampoline. That kind of situation is shown in Figure 3a. The mat 301 comprises and edge of the mat 304, a fabric of the mat 307 and a webbing strip 313. The fabric of the mat comprises two perpendicular set of stripes of fabric forming a mesh structure, and one set of stripes comprises stripes parallel to the edge of the mat, parallel stripes 308 and another set of stripes comprises stripes perpendicular to the edge of the mat, transverse stripes 309. The stripes form a mesh structure comprising rectangular holes 325. The webbing stripe is fixed to border area of the mat extending from the edge of the mat with stitches 328. The webbing stripe may form a loop, or it may comprise additional attachment arrangements for attaching elastic members between the mat and frame of the trampoline.

The inventors have discovered that when increasing size of the holes 325 of the mat 301 improve many advantages described earlier. This is done by thinning the weave, i.e. increasing spacing between adjacent stripes. However, the inventors have also discovered that beside the webbing stripe 313 some fraying of the fabric of the mat 307 can happen. This is described in Figure 3b. When a user bounces on the mat, the stripes may start to move in relation to each other. This is most prominent in vicinity of the webbing stripe. In Figure 3b two parallel stripes are moved towards each other under the webbing stripe between two stiches thus forming an enlarged hole 329 between the stripe and the stich on the edge of the mat side. Same phenomena have occurred also near inner edge of the webbing stripe where distance between the stich and the parallel stripe has increased forming another enlarged hole. The enlarged holes form rows generating fraying lines in the fabric of the mat. These fraying lines are essentially parallel to the edge of the mat and the webbing stripe and are most common in border areas of the mat. The continuing fraying damage the mat irrevocably and may generate serious safety hazards.

Figures 4a, 4b and 4c show two embodiments of an edge structure 110. Figures 4a and 4b show an example of forming one embodiment of the edge structure (4b), and Figure 4c shows another embodiment where a second support webbing 119 is added to the embodiment of Figure 4b. This example is applicable to example of a mat described in Figure 2. The mat comprises an edge of the mat 104, a fabric of the mat 106 and a webbing stripe 113 (shown only Figure 4c) comprising an attaching arrangement 105 for an elastic member.

Figure 4a and 4b show the fabric of the mat 106 comprising an edge of the fabric of the mat 107, parallel stripes 108 and transverse stripes 109. The parallel stripes comprise inner edges 111 and outer edges 112. The inner edges are towards center of the mat and the outer edges are towards the edge of the mat 104. The edge structure 110 comprises a first support webbing 114 and a first stich 115. The first support webbing comprises a first edge 117 and a second edge 118, and the first edge is towards the edge of the mat 104 and the second edge is towards the center of the mat. The first support webbing is a strip like piece of fabric or corresponding material. Width of the first support webbing is distance between the first edge and the second edge. In some embodiments, the width of the first support webbing is in range of 10 - 50 mm. The inventors have found that using wider first support webbings do not improve functioning of the edge structure.

The first support webbing 114 is stitched to the fabric of the mat 106 by the first stich 115. The first stich is essentially parallel to the outer edge 112 of the parallel stripe. The first stich in a position that is parallel to the edge of the mat and distance to the edge of the fabric of the mat 107 is more than the width of the first support webbing. The first stich is positioned in such a way that the first edge 117 of the first support webbing extends over the outer edge 112 of one parallel stripe 108 and the first stich is between said outer edge and the first edge. The first stich is positioned near the first edge 117 (Figure 4a). In some embodiments, the distance between the first stich and the first edge is less than 2 mm.

The edge structure 110 is formed by folding the fabric of the mat 106 between the first edge 117 of the first support webbing 114 and the edge of the fabric of the mat 107 over the first support webbing thus forming a folded part 122 of the fabric of the mat (Figure 4b). The edge structure further comprises a second stich 126. The folded part of fabric of the mat and the first support webbing are stitched together by the second stich (Figure 4b). The folded part of fabric of the mat is stitched tightly on the first support webbing by the second stich in such a way that at the edge of the mat 104 the fabric of the mat is tightened against the first edge of the first support webbing, i.e. the folded part of fabric of the mat is being tightened against the first edge and the first support webbing when the folded part of fabric of the mat is stitched on the first support webbing. The edge structure further comprises auxiliary stiches 116 that are used to stitch the webbing stripe 113, the first support webbing and the folded part fabric of the mat together (Figure 4 c). In some embodiments, when the edge structure is formed by folding the fabric of the mat, the first stich 115 is closer to the edge of the mat 104 than the second stich or auxiliary stiches, i.e. the first stich it the closest stich to the edge of the mat.

It must be noted that when the edge structure 110 is formed by folding the edge of the fabric of the mat 107 and the edge of the mat are in different places. The first stich, the second stich and the auxiliary stiches are essentially parallel to the edge of the mat. The edge structure prevents or at least significantly diminish the fraying of the fabric of the mat near the edge of the mat. Also, it spreads shear forces from the elastic member larger areas. The webbing stripes can be fixed to the mat below the edge structure 110 (Figure 4c) or above.

Figure 4c shows an embodiment of the edge structure 110 where a second support webbing 119 is stitched over the folded part 122 of the fabric of the mat by the auxiliary stiches 116. The second support webbing protects the folded part 122 and further spreads the forces from the elastic member during use of the trampoline. The second support webbing comprises a first edge of the second support webbing 120 and a second edge of the second support webbing 121. Width of the of the second support webbing is distance between the first edge of the second support webbing and the second edge of the second support webbing, and the width of the second support webbing is bigger than the width of the first support webbing. The width of the second support webbing is bigger than the folded part 122 fabric of the mat 106, i.e. the distance between the edge of the fabric of the mat 107 and the edge of the mat 104. The second support webbing is configured in such a way that the first edge of the second support webbing 120 extends over the edge of the mat

104 and the second edge of the second support webbing 121 extends over the edge of the fabric of the mat 107.

In some embodiments, the second support webbing is configured in such a way that the first edge of the second support webbing is between the attaching arrangement

105 and the edge of the mat.

In some embodiments, the second stich 126 is configured to stich the outermost parallel stripes 108, i.e. the parallel stripes that are closest to the edge of the mat 104 and closest to the first stich 115. The inventors have found that minimizing distance from the second stich to the edge of the mat minimize the fraying.

In some embodiments, the webbing stripe 113 is attached to the edge structure 110 in such a way that the attaching arrangements 105 extend over the edge of the mat 104. In some embodiments, the webbing stripes are fixed between the second support webbing and the folded part of the fabric of the mat. In some embodiments, the webbing stripe extends on both surfaces of the mat, i.e. the webbing stripe goes around the edge of the mat. In that case, the attaching arrangement is between edges of the webbing stripe. In some embodiments, the folded part 122 extends over inner edge of the webbing stripe.

The inventors have discovered that length of the first support webbing 114 should be such that the first support webbing supports at least three attachment arrangements 105. The supporting effects diminish if the first support webbing is shorter. In some embodiments, the first support webbing extends over all webbing stripes and attachment arrangements.

Figure 5 shows an example of an embodiment of an edge structure 510 for a mat of a trampoline. The mat comprises an edge of the mat 504, a fabric of the mat 506 and a webbing stripe 513 comprising an attaching arrangement 505 for an elastic member. The edge structure comprises a first support webbing 514, a first stich 515, a second stich 526, auxiliary stiches 516, a second support webbing 519 and a folded part 522. The edge structure further comprises additional support webbing 527. In this embodiment there are two additional support webbings. The additional support webbings are for distributing and spreading shear forces caused by elastic members when the mat is stretching. The additional support webbings are practically similar as the first support webbing. The additional support webbings are parallel to the first support webbing, and they have spacings between them. In some embodiments, widths of these spacings are shorter than the width of the first support webbing. The additional support webbings are between the folded part 522 and the fabric of the mat. The additional support webbings are fixed to the edge structure by the auxiliary stiches. The additional support webbings also provide additional rigidity for the edge structure and thus for border area of the mat.

Some advantageous embodiments of the method and apparatus according to the invention have been described above. The invention is however not limited to the embodiments described above, but the inventive idea can be applied in numerous ways within the scope of the claims.

Reference Signs: trampoline 100 mat 101 ; 201 ; 301 frame 102 elastic member 103 edge of the mat 104; 204; 304; 504 attaching arrangement 105; 505 fabric of the mat 106; 306; 506 edge of the fabric of the mat 107; 307 parallel stripes 108; 308 transverse stripes 109; 309 edge structure 110; 510 inner edges 111 outer edges 112 webbing stripe 113, 313, 513 first support webbing 114 first stich 115; 515 auxiliary stiches 116; 516 first edge 117 second edge 118 second support webbing 119; 519 first edge of the second support webbing 120 second edge of the second support webbing 121 folded part of the fabric of the mat 122; 522 middle part of the mat 123 periphery part of the mat 124 hole 125; 325 second stich 126; 526 additional support webbing 527 stich of the webbing stripe 328 enlarged hole 329

Claims

Patent claims

1. An edge structure (110; 510) for a mat (101 ; 201 ; 301 ) of a trampoline (100), and the trampoline comprises a frame (102) and a multitude of elastic members (103) arranged between the frame and the mat, and the mat comprises an edge of the mat (104; 204; 304; 504), a fabric of the mat (106; 306; 506) and attaching arrangements (105) for the elastic members, and the fabric of the mat comprises an edge of the fabric of the mat (107), two perpendicular set of stripes forming a mesh structure, and one set of stripes comprises stripes (108) comprising inner edges (111 ) and outer edges (112), and outer edges are at least partly towards the edge of the fabric of the mat, and the edge structure comprises a webbing stripe (113; 313, 513) stitched to the fabric of the mat, and at least one the attaching arrangement is attached to the webbing stripe, characterized in that the edge structure further comprises a first support webbing (114; 514), a first stich (115; 515), a second stich (126; 526) and auxiliary stiches (116; 516), and the first support webbing comprises a first edge (117) and a second edge (118), and the first edge is towards the edge of the mat, and width of the first support webbing is distance between the first edge and the second edge, and the first support webbing is fixed to the fabric of the mat by the first stich in a position that is parallel to the edge of the mat and distance from the first edge to the edge of the fabric of the mat is more than the width of the first support webbing, and the first stich is positioned in such a way that the first edge extends over the outer edge of one parallel stripe and the first stich is between said outer edge and the first edge, and the edge structure is formed by folding the fabric of the mat between the first edge and the edge of the fabric of the mat over the first support webbing thus forming a folded part of the fabric of the mat (122; 522), and the folded part of fabric of the mat is stitched on the first support webbing by the second stich, and the webbing stripe, the folded part of fabric of the mat and the first support webbing are stitched together by the auxiliary stiches.

2. The edge structure (110; 510) according to the claim 1 , characterized in that second stich (126; 526) is configured to stich the outermost parallel stripes (108), i.e. the parallel stripes that are closest to the edge of the mat (104; 204; 304; 504).

3. The edge structure (110; 510) according to the claim 1 or 2, characterized in that the edge structure comprises a second support webbing (119; 519), and the second support webbing is stitched over the folded part of the fabric of the mat (122; 522).

4. The edge structure (110; 510) according to the claim 3, characterized in that the second support webbing (119; 519) comprises a first edge of the second support webbing (120) and a second edge of the second support webbing (121 ), and width of the of the second support webbing is distance between the first edge of the second support webbing and the second edge of the second support webbing, and the width of the second support webbing is bigger than the width of the first support webbing (114; 514).

5. The edge structure (110; 510) according to the claim 4, characterized in that the width of the second support webbing (119; 519) is bigger than the folded part (122; 522) fabric of the mat (106; 306; 506), i.e. the distance between the edge of the fabric of the mat (107) and the edge of the mat (104; 204; 304; 504).

6. The edge structure (110; 510) according to the claim 5, characterized in that the second support webbing (119; 519) is configured in such a way that the first edge of the second support webbing (120) extends over the edge of the mat (104; 204; 304; 504) and the second edge of the second support webbing (121 ) extends over the edge of the fabric of the mat (107).

7. The edge structure (110; 510) according to the claim 6, characterized in that the second support webbing (119; 519) is configured in such a way that the first edge of the second support webbing (120) is between the edge of the mat (104; 204; 304; 504) and the attaching arrangement (105).

8. The edge structure (110; 510) according to any one of the preceding claims, characterized in that the webbing stripe (113; 513) is attached to the edge structure in such a way that the attaching arrangements (105) extend over the edge of the mat (104; 204; 304; 504).

9. The edge structure (110; 510) according to the claim 8, characterized in that the webbing stripe (113; 513) extends on both surfaces of the mat (101 ; 201 ; 301 ), i.e. the webbing stripe goes around the edge of the mat (104; 204; 304; 504).

10. The edge structure (110; 510) according to any one of the preceding claims, characterized in that the mat (101 ; 201 ; 301 ) comprises a middle part of the mat (123) and a periphery part of the mat (124), and the mesh structure of the mat comprises holes (125; 325), and the periphery part of the mat is woven tighter than the middle part of the mat, i.e. the holes in the periphery part of the mat are smaller than the holes in the middle part of the mat, and the edge structure is configured to use at least part of the periphery part of the mat.

11 . The edge structure (110; 510) according to the claim 10, characterized in that the holes (125; 325) are rectangular.

12. The edge structure (110; 510) according to the claim 11 , characterized in that at least in some parts of the periphery part of the mat (124) the holes (125; 325) are elongated and have longitudinal axes, and the longitudinal axes are parallel to the edge of the mat (104; 204; 304; 504).

13. The edge structure (110; 510) according to any one of the preceding claims, characterized in that the width of the first support webbing (114; 514) is 10 - 50 mm.

14. The edge structure (110; 510) according to any one of the preceding claims, characterized in that length of the first support webbing (114; 514) is such that it supports at least three adjacent attaching arrangements (105).

15. The edge structure (110; 510) according to any one of the preceding claims, characterized in that the edge structure comprises at least one additional support webbing (527), and the additional support webbing is parallel to the first support webbing (144), and the additional support webbing is covered by the folded part of the fabric of the mat (122; 522).

16. A trampoline (100) comprising a mat (101 ; 201 ; 301 ), a frame (102) and a multitude of elastic members (103) arranged between the frame and the mat, and the mat comprises an edge of the mat (104; 204; 304; 504), a fabric of the mat (106; 306; 506) and attaching arrangements (105) for the elastic members, and the fabric of the mat comprises an edge of the fabric of the mat (107), two perpendicular set of stripes forming a mesh structure, and one set of stripes comprises stripes (108) comprising inner edges (111 ) and outer edges (112), and outer edges are at least partly towards the edge of the fabric of the mat, and the mat comprises a webbing stripe (113; 313, 513) stitched to the fabric of the mat, and at least one the attaching arrangement is attached to the webbing stripe, characterized in that the mat further comprises a first support webbing (114; 514), a first stich (115; 515), a second stich (126; 526) and auxiliary stiches (116; 516), and the first support webbing comprises a first edge (117) and a second edge (118), and the first edge is towards the edge of the mat, and width of the first support webbing is distance between the first edge and the second edge, and the first support webbing is fixed to the fabric of the mat by the first stich in a position that is parallel to the edge of the mat and distance from the first edge to the edge of the fabric of the mat is more than the width of the first support webbing, and the first stich is positioned in such a way that the first edge extends over the outer edge of one parallel stripe and the first stich is between said outer edge and the first edge, and an edge structure (110; 510) is formed by folding the fabric of the mat between the first edge and the edge of the fabric of the mat over the first support webbing thus forming a folded part of the fabric of the mat (122; 522), and the folded part of fabric of the mat is stitched on the first support webbing by the second stich, and the webbing stripe, the folded part of fabric of the mat and the first support webbing are stitched together by the auxiliary stiches.

17. A mat (101 ; 201 ; 301 ) for a trampoline (100), and the mat comprises an edge of the mat (104; 204; 304; 504), a fabric of the mat (106; 306; 506), and an edge structure (110; 510), and the fabric of the mat comprises an edge of the fabric of the mat (107), two perpendicular set of stripes forming a mesh structure, and one set of stripes comprises stripes (108) comprising inner edges (111 ) and outer edges (112), and outer edges are at least partly towards the edge of the fabric of the mat, and the edge structure comprises a webbing stripe (113; 313, 513) stitched to the fabric of the mat, and at least one the attaching arrangement is attached to the webbing stripe, characterized in that the edge structure further comprises a first support webbing (114; 514), a first stich (115; 515), a second stich (126; 526) and auxiliary stiches (116; 516), and the first support webbing comprises a first edge (117) and a second edge (118), and the first edge is towards the edge of the mat, and width of the first support webbing is distance between the first edge and the second edge, and the first support webbing is fixed to the fabric of the mat by the first stich in a position that is parallel to the edge of the mat and distance from the first edge to the edge of the fabric of the mat is more than the width of the first support webbing, and the first stich is positioned in such a way that the first edge extends over the outer edge of one parallel stripe and the first stich is between said outer edge and the first edge, and the edge structure is formed by folding the fabric of the mat between the first edge and the edge of the fabric of the mat over the first support webbing thus forming a folded part of the fabric of the mat (122; 522), and the folded part of fabric of the mat is stitched on the first support webbing by the second stich, and the webbing stripe, the folded part of fabric of the mat and the first support webbing are stitched together by the auxiliary stiches.