EP1633446B1 - Trampoline - Google Patents

Trampoline Download PDF

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Publication number
EP1633446B1
EP1633446B1 EP04735534.2A EP04735534A EP1633446B1 EP 1633446 B1 EP1633446 B1 EP 1633446B1 EP 04735534 A EP04735534 A EP 04735534A EP 1633446 B1 EP1633446 B1 EP 1633446B1
Authority
EP
European Patent Office
Prior art keywords
rods
mat
trampoline
rod
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04735534.2A
Other languages
German (de)
English (en)
Other versions
EP1633446A4 (fr
EP1633446A2 (fr
Inventor
Keith Vivian Alexander
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Board and Batten International Inc
Original Assignee
Board and Batten International Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Board and Batten International Inc filed Critical Board and Batten International Inc
Publication of EP1633446A2 publication Critical patent/EP1633446A2/fr
Publication of EP1633446A4 publication Critical patent/EP1633446A4/fr
Application granted granted Critical
Publication of EP1633446B1 publication Critical patent/EP1633446B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B5/00—Apparatus for jumping
    • A63B5/11—Trampolines
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/0054—Features for injury prevention on an apparatus, e.g. shock absorbers
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/0054—Features for injury prevention on an apparatus, e.g. shock absorbers
    • A63B2071/0063—Shock absorbers
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/02—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using resilient force-resisters
    • A63B21/026—Bars; Tubes; Leaf springs
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres

Definitions

  • the invention relates to improvements to a trampoline for sporting and/or recreational use which is soft-edged relative to conventional trampolines which support the mat of the trampoline via a solid peripheral frame and exposed springs between the frame and the mat.
  • US patent 6,319, 174 discloses a form of soft-edged trampoline in which the mat of the trampoline is supported by a plurality of resiliently flexible rods received in a frame of the trampoline at the lower ends of the rods and coupled to the periphery of the bouncing mat of the trampoline at their upper ends, and which avoids the need for a solid frame about the exterior of the bouncing mat and exposed springs between the frame and periphery of the mat.
  • the invention provides an improved or at least alternative form of such a soft-edged trampoline.
  • the invention comprises a trampoline including a flexible mat, and a plurality of resiliently flexible rods the lower ends of which are retained in a frame of the trampoline and the upper ends of which are coupled to the mat about a periphery of the mat to support the mat, in which the rod stiffness against bending is within the range of about 400 to about 1200 N/m.
  • the rod stiffness against bending is in the range 600-900 N/m, and most preferably is about 700 N/m.
  • the rods are between about 0.3 and about 1.5 metres in length. More preferably, the rods are between about 0.4 and 1 metre in length.
  • the rods are pultruded fibreglass rods.
  • the rods are deflected at their upper ends, from a natural state of rest when the rods are in position in the frame at their lower ends but before connection with the mat edge at their upper ends, to connection with the mat, by between about 100 and about 300mm.
  • the rod deflection is in the range 150 to 250 mm and most preferably about 220mm
  • the rods which support the mat are deflected so as to apply an optimum load radially or laterally outwards to tension the mat appropriately for normal functioning of the trampoline, while at the same time the rods are of a length and diameter which gives the mat edge a vertical stiffness that is sufficiently resilient, impact-absorbing and safe for a jumper who might land on the edge out of control.
  • Trampolines of the invention may be circular, square, rectangular, or of other shapes such as octagonally shaped in plan view for example.
  • a preferred form trampoline comprises a flexible mat 1 on which users may bounce, a plurality of resiliently flexible rods 2, and a base frame 3.
  • the preferred form trampoline shown is circular in shape but the trampoline could be of any other desired shape such as oval, square, rectangular or similar.
  • the base frame of the preferred form trampoline comprises a circular beam 4 typically formed of steel or aluminium for example, which may be supported from the ground by legs 5.
  • the rods 2 are typically fibreglass rods and may be pultruded glass reinforced plastic rods, but may alternatively be formed of spring steel for example.
  • the lower ends of the rods are retained by the base frame 3 and the upper ends of the rods connect to fittings 6 as will be further described, which are coupled to the mat 1 about the periphery of the mat.
  • the lower ends of the rods 2 enter into tubular holders 7 fixed to the circular beam as shown, but the lower ends of the rods may be coupled to the circular beam, or a base frame of the trampoline of any other form, in any suitable way.
  • the mat which is typically heavy canvas or a woven synthetic material, is doubled back upon itself and fixed by stitching for example about the periphery of the mat to form a continuous pocket 8 extending about the periphery of the 170217-1 mat.
  • a number of the fittings 6 are positioned within this pocket in the peripheral edge of the mat as shown in Figures 3 and 3a in particular.
  • the fittings may be loosely captured within the pocket or alternatively may be stitched to the mat within the edge pocket, or mechanically fastened to the mat via rivets for example.
  • the rods in the preferred form each have a ball-shaped upper end 12 which connects to a socket cavity in the underside of one of the fittings 6.
  • the fittings 6 will be formed from a plastics material, by injection moulding for example.
  • the fittings may optionally include a slight dome on the body of the fitting over the socket cavity, on the underside of the fitting.
  • the fittings have an outer edge which in use is closest to the outer peripheral edge of the mat, which edge is wider in the planar than in the inner edge of fittings, so that the fittings have an approximate truncated triangular shape and plan view, with concave sides, but this is non-limiting and in other forms the fitting could be alternatively shaped.
  • the rod deflection x indicated as in Figure 4 .
  • this deflection is between about 100 and about 300 mm, preferably between about 150-250 mm, and optimally about 220 mm.
  • the rods are chosen so that they have a stiffness against cantilever bending in the range 170217-1 about 400 to about 1200 N/m, preferably in the range 600-900 N/m, and most preferably about 700 N/m.
  • the rods will be between about 0.5 and 1.5 metres in length, and more typically between about 0.45 and 1 metre in length.
  • pultruded glass reinforced plastic rods are about 620 mm in length.
  • the trampoline will then have an optimum balance of properties of, first, sufficient vertical stiffness at the mat edge so that that the edge will not "collapse" when a jumper lands on the edge, and second tension of the mat laterally to provide good jumping performance when a jumper is jumping centrally on the mat. That is, within these parameters, the rods are deflected so as to apply optimum load radially outwards to tension the mat for optimum jumping performance of the trampoline. At the same time, the rods are of a length and diameter which gives the mat edge a vertical stiffness that is sufficiently resilient, impact-absorbing and safe for a jumper who might land on the edge out of control.
  • Figure 5 plots these two measures, defining the ranges of the invention.
  • equation 5 is plotted in Figure 7 for the range of rod stiffnesses expected, being 400N/m to 1200N/m, but nominally 700N/m. This is for glass reinforced pultruded rods. Other materials need another plot to define the length to diameter.
  • Figure 7 shows the combinations of rod length and rod diameter that will give performance for a trampoline edge in accordance with the invention. With the specified initial deflection x (nominally 220mm) these combinations will at the same time also give optimum performance to the trampoline mat as well.
  • the figure shows the rod combinations required to achieve the two key functions of mat tension and edge stiffness. These two functions can be achieved with different materials in the same way as shown in the example, but using the appropriate Young's Modulous, E, and coefficient, C 1 .

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Laminated Bodies (AREA)
  • Woven Fabrics (AREA)

Claims (9)

  1. Trampoline comprenant une toile souple (1) et une pluralité de tiges élastiquement souples (2) dont les extrémités inférieures sont retenues dans un châssis (3) du trampoline et dont les extrémités supérieures sont couplées à la toile (1) autour d'une périphérie de la toile pour supporter la toile, caractérisé en ce que la rigidité de tige contre la flexion est dans la plage d'environ 400 à environ 1200 N/m.
  2. Trampoline selon la revendication 1, dans lequel la rigidité de tige contre la flexion est dans la plage d'environ 600 à environ 900 N/m.
  3. Trampoline selon la revendication 1, dans lequel la rigidité de tige contre la flexion est d'environ 700 N/m.
  4. Trampoline selon l'une quelconque des revendications précédentes, dans lequel les tiges (2) sont comprises entre environ 0,3 et environ 1,5 mètre de long.
  5. Trampoline selon l'une quelconque des revendications 1 à 3, dans lequel les tiges (2) sont comprises entre environ 0,45 et environ 1 mètre de long.
  6. Trampoline selon l'une quelconque des revendications précédentes, dans lequel les tiges (2) sont des tiges en fibres de verre pultrudées.
  7. Trampoline selon l'une quelconque des revendications précédentes, dans lequel les tiges (2) sont déviées au niveau des extrémités supérieures des tiges, à partir d'un état naturel de repos lorsque les tiges sont dans la position dans le châssis (3) au niveau de leurs extrémités inférieures mais avant le raccordement avec le bord de la toile au niveau de leurs extrémités supérieures pour le raccordement avec la toile (1), selon une valeur comprise entre environ 100 et environ 300 mm.
  8. Trampoline selon la revendication 7, dans lequel la déviation de tige est dans la plage d'environ 150 à environ 250 mm.
  9. Trampoline selon la revendication 7 ou 8, dans lequel la déviation de tige est d'environ 220 mm.
EP04735534.2A 2003-05-30 2004-05-31 Trampoline Expired - Lifetime EP1633446B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ52621103 2003-05-30
PCT/NZ2004/000111 WO2004105885A2 (fr) 2003-05-30 2004-05-31 Trampoline

Publications (3)

Publication Number Publication Date
EP1633446A2 EP1633446A2 (fr) 2006-03-15
EP1633446A4 EP1633446A4 (fr) 2008-04-16
EP1633446B1 true EP1633446B1 (fr) 2014-03-12

Family

ID=33488017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04735534.2A Expired - Lifetime EP1633446B1 (fr) 2003-05-30 2004-05-31 Trampoline

Country Status (4)

Country Link
EP (1) EP1633446B1 (fr)
AU (1) AU2004243127A1 (fr)
CA (1) CA2527745C (fr)
WO (1) WO2004105885A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005115557A1 (fr) * 2004-05-31 2005-12-08 Board & Batten International Inc Trampoline
CA2591090C (fr) * 2004-12-09 2012-07-31 Board & Batten International Inc. Trampoline
TWI464244B (zh) 2011-11-15 2014-12-11 Ticona Llc 用於高壓電子組件之液晶聚合物組合物
CN103930464B (zh) 2011-11-15 2016-02-10 提克纳有限责任公司 紧凑型相机模块
TWI577092B (zh) 2011-11-15 2017-04-01 堤康那責任有限公司 微間距電連接器及用於其中之熱塑性組合物
US11027164B2 (en) * 2018-12-29 2021-06-08 Yongqi Wang Easy-to-assemble trampoline

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6319174B1 (en) * 1999-11-02 2001-11-20 Keith Vivian Alexander Soft-edged recreational trampoline
NZ513331A (en) * 2001-11-20 2005-01-28 Board & Batten Int Inc Edge fittings for soft-edged trampolines

Also Published As

Publication number Publication date
WO2004105885A3 (fr) 2005-01-06
EP1633446A4 (fr) 2008-04-16
CA2527745C (fr) 2012-03-13
WO2004105885A2 (fr) 2004-12-09
AU2004243127A1 (en) 2004-12-09
CA2527745A1 (fr) 2004-12-09
EP1633446A2 (fr) 2006-03-15

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