EP0790067A1 - Appareil de gymnastique ainsi qu'une barre horizontale appropriée à un tel appareil de gymnastique - Google Patents

Appareil de gymnastique ainsi qu'une barre horizontale appropriée à un tel appareil de gymnastique Download PDF

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Publication number
EP0790067A1
EP0790067A1 EP97200416A EP97200416A EP0790067A1 EP 0790067 A1 EP0790067 A1 EP 0790067A1 EP 97200416 A EP97200416 A EP 97200416A EP 97200416 A EP97200416 A EP 97200416A EP 0790067 A1 EP0790067 A1 EP 0790067A1
Authority
EP
European Patent Office
Prior art keywords
bar
gymnastic apparatus
supports
gymnastic
deflection
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.)
Withdrawn
Application number
EP97200416A
Other languages
German (de)
English (en)
Inventor
Jacobus Marinus Hendricus Maria Janssen
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.)
Janssen and Fritsen BV
Original Assignee
Janssen and Fritsen BV
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 Janssen and Fritsen BV filed Critical Janssen and Fritsen BV
Publication of EP0790067A1 publication Critical patent/EP0790067A1/fr
Withdrawn legal-status Critical Current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
    • A63B1/00—Horizontal bars

Definitions

  • the invention relates to a gymnastic apparatus comprising an elongated horizontal bar supported by posts, whereby said bar is supported near each end by at least two spaced-apart supports.
  • the invention furthermore relates to a horizontal bar suitable for such a gymnastic apparatus.
  • a horizontal bar is supported near each end by two bearing bushings butting against each other, in which the bar is journalled to be rotatable about its central axis.
  • the bar is not capable of movement in axial direction.
  • the two bearing bushes positioned adjacently to each other jointly form a rigid fixation of the bar, as it were, which only allows the bar to rotate about its central axis.
  • Round said bar exercises will be performed by a gymnast, which exercises inter alia include rotation of the body about the bar. The bar is thereby subjected to relatively great mechanical loads.
  • the international gymnastics federation FIG has enforced requirements, inter alia with regard to the degree of deflection in the centre of the bar with a predetermined static test load and a predetermined prescribed diameter of the bar of 28 mm and a length of 2.4 m.
  • the deflection that occurs in the centre of the bar may amount to 200 mm.
  • the tensile stresses that occur thereby are substantially equal to the breaking stress of the bar material.
  • No materials for bars are known which permit a higher maximum allowable tensile stress whilst retaining the prescribed degree of deflection with a given static test load and which also keep the cost price of the gymnastic apparatus within bounds.
  • the object of the invention is to provide a gymnastic apparatus which enables a greater freedom in selecting the properties of the material of the bar whilst retaining the prescribed degree of deflection with a predetermined static test load.
  • the inner supports positioned closer to the centre of the bar are provided with bearings, in which the bar is movable in longitudinal direction and capable of deflection in a direction transversely to the longitudinal direction of the bar, whilst the outer supports are spaced apart from said inner supports.
  • German utility model DE-U-88.15.268 discloses a gymnastic apparatus wherein the horizontal bar is supported near each end by two spaced-apart supports.
  • the inner supports of said apparatus are not provided with bearings in which the bar is capable of deflection in a direction extending transversely to said bar.
  • One embodiment of the gymnastic apparatus according to the invention is characterized in that the spacing between supports positioned adjacently to each other is determined in dependence on the E-modulus and the predetermined maximum allowable deflection with a predetermined force.
  • the spacing between the supports can be determined experimentally or physically, depending inter alia on the E-modulus of the material of the bar, whereby the amount of deflection in the centre of the bar equals the prescribed amount of deflection with the given static test load.
  • Another embodiment of the gymnastic apparatus according to the invention is characterized in that said supports fix the bar against translation in directions transversely to the bar.
  • Figure 1 shows a gymnastic apparatus 1 which is known per se and which comprises a horizontal bar 3 supported by two posts 2.
  • Bar 3 has a length of 2.4 metres.
  • Bar 3 is connected to one end 5 of pole 2 at each end 4.
  • gymnastic apparatus 1 is stayed by means of guy ropes 6 attached to posts 2.
  • the ends 4 of bar 3 are pivotable about the x-axis with respect to the ends 5 of post 2.
  • Posts 2 are provided with a support 7 on a side remote from the ends 2, with respect to which post 2 is pivotable in three directions.
  • Figure 3A shows a situation wherein a static load F is exerted on the centre of bar 3.
  • As a result of said static load F bar 3 will deflect over a distance ⁇ 1 in its centre.
  • the ends 4 will thereby pivot with respect to the diagrammatically illustrated ends 5 of posts 2.
  • the deflected bar is indicated at 3'.
  • FIG 2 shows a gymnastic apparatus 10 according to the invention.
  • the gymnastic apparatus comprises two posts 2, between which a bar 11 is provided in a manner shown in Figure 1.
  • Gymnastic apparatus 10 furthermore comprises two posts 12, which are disposed between poles 2 and which are connected to horizontal bar 11 with one end 13.
  • the distance between ends 13 corresponds with the length of 2.4 metres prescribed by the FIG.
  • Each end 13 is provided with a ball bearing, in which bar 3 is movable in Y-direction and also pivotable in X-, Y- and Z-direction.
  • Posts 2, 12 are disposed at an angle ⁇ with respect to each other, but they may also extend vertically.
  • the desired spacing between posts 2, 12 is maintained by a distance piece 14.
  • the gymnastic apparatus may also be constructed in such a manner that angle ⁇ is adjustable.
  • the distance D can be determined experimentally or be calculated physically.
  • Bar 11 may for example be made of a composite material comprising a fibre-reinforced plastic.
  • the bar may comprise carbon or aramid.
  • Such materials generally have a lower specific weight than the steel of which the known bar 3 is made. The lower specific weight has a positive effect on the dynamic mechanical behaviour of the bar.
  • the supports may also be mounted on an enlarged end of a post, so that only two posts will be required.
  • the gymnastic apparatus according to the invention may also be used with so-called parallel bars or asymmetric bars, whereby each bar is supported in a similar manner as the above-described horizontal bar near each end.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
EP97200416A 1996-02-15 1997-02-14 Appareil de gymnastique ainsi qu'une barre horizontale appropriée à un tel appareil de gymnastique Withdrawn EP0790067A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1002356 1996-02-15
NL1002356A NL1002356C2 (nl) 1996-02-15 1996-02-15 Turntoestel alsmede rekstok geschikt voor een dergelijk turntoestel.

Publications (1)

Publication Number Publication Date
EP0790067A1 true EP0790067A1 (fr) 1997-08-20

Family

ID=19762321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97200416A Withdrawn EP0790067A1 (fr) 1996-02-15 1997-02-14 Appareil de gymnastique ainsi qu'une barre horizontale appropriée à un tel appareil de gymnastique

Country Status (2)

Country Link
EP (1) EP0790067A1 (fr)
NL (1) NL1002356C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018183398A (ja) * 2017-04-26 2018-11-22 セノー株式会社 体操装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384368A (en) * 1966-05-13 1968-05-21 Robert M. Fenner Gymnastic horizontal bars
US4227688A (en) * 1978-10-06 1980-10-14 Hisao Senoh Exercise assembly with flexible bar mounting
CH621260A5 (en) * 1977-09-26 1981-01-30 Paul Haener Gymnastic device and a high bar carried by supports
FR2611507A1 (fr) * 1987-02-26 1988-09-09 Miceli Henri Systeme de coulisseaux destine au reglage en hauteur des barres fixes a usage sportif
JPS6429276A (en) * 1987-07-24 1989-01-31 Senoh Kk Production of frp bar used in ueven bars or parallel bars and said bar
DE8815268U1 (fr) * 1988-12-08 1989-03-16 Riechers, Siegfried, 7102 Weinsberg, De

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384368A (en) * 1966-05-13 1968-05-21 Robert M. Fenner Gymnastic horizontal bars
CH621260A5 (en) * 1977-09-26 1981-01-30 Paul Haener Gymnastic device and a high bar carried by supports
US4227688A (en) * 1978-10-06 1980-10-14 Hisao Senoh Exercise assembly with flexible bar mounting
FR2611507A1 (fr) * 1987-02-26 1988-09-09 Miceli Henri Systeme de coulisseaux destine au reglage en hauteur des barres fixes a usage sportif
JPS6429276A (en) * 1987-07-24 1989-01-31 Senoh Kk Production of frp bar used in ueven bars or parallel bars and said bar
DE8815268U1 (fr) * 1988-12-08 1989-03-16 Riechers, Siegfried, 7102 Weinsberg, De

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8910, Derwent World Patents Index; Class A32, AN 89-074652, XP002030759 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018183398A (ja) * 2017-04-26 2018-11-22 セノー株式会社 体操装置

Also Published As

Publication number Publication date
NL1002356C2 (nl) 1997-08-18

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