EP3653274B1 - Sports device - Google Patents
Sports device Download PDFInfo
- Publication number
- EP3653274B1 EP3653274B1 EP19208350.9A EP19208350A EP3653274B1 EP 3653274 B1 EP3653274 B1 EP 3653274B1 EP 19208350 A EP19208350 A EP 19208350A EP 3653274 B1 EP3653274 B1 EP 3653274B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- section
- sports device
- torsional
- cross
- 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.)
- Active
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 1
- 208000002740 Muscle Rigidity Diseases 0.000 description 16
- 238000005452 bending Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000009182 swimming Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/12—Arrangements in swimming pools for teaching swimming or for training
-
- 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
- A63B71/02—Games or sports accessories not covered in groups A63B1/00 - A63B69/00 for large-room or outdoor sporting games
- A63B71/023—Supports, e.g. poles
-
- 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
- A63B71/02—Games or sports accessories not covered in groups A63B1/00 - A63B69/00 for large-room or outdoor sporting games
- A63B71/023—Supports, e.g. poles
- A63B2071/024—Supports, e.g. poles with screws or pins in the earth
-
- 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
- A63B21/40—Interfaces with the user related to strength training; Details thereof
- A63B21/4041—Interfaces with the user related to strength training; Details thereof characterised by the movements of the interface
- A63B21/4043—Free movement, i.e. the only restriction coming from the resistance
Definitions
- This invention relates to sports equipment comprising an abutment designed as a rod with a rigid support at its first end and a second end, which second end is designed as a free end and at which second end a person executing a movement with a body part over a rope while exerting a force on the second end is connectable.
- a similar device is out DE202004010434 known.
- the rod disclosed does not have a continuously variable flexural rigidity in some areas.
- the lower part of the rod has a higher bending stiffness than the part near the free end.
- the stiffness changes with the in DE202004010434 disclosed device not continuously over the extension length of the rod.
- the document DE202004010434 does not provide any information about a special design of the rod with regard to the torsional stiffness of the rod.
- AT518505A1 also discloses an abutment in the form of a rod, in which document an increase in the flexural rigidity of the rod is mentioned in a portion of the latter from the abutment to the free end. There is no reference in this document to a special design of the rod with regard to torsional stiffness. The rod disclosed below represents a further development of that in AT518505A1 revealed rod.
- the sports equipment described in the documents cited above all have the disadvantage that when the bar is loaded, deformation can also occur in the form of torsion of the bar. This can happen in particular when a force with a force deviating from a desired direction acts on the rod via the cable.
- the rod of the sports equipment can act as a spring and exert a restoring force on the moving person. According to the current teaching, the spring action of the rod is changed in the event of torsional deformation, which is uncomfortable for the person.
- the invention disclosed below has the object of providing a rod as an abutment, which rod exerts a constant spring effect on the moving person via the rope even with a variable torsional load, and is characterized by a low torsional deformation.
- the invention solves this by designing the sports device according to the invention in accordance with the characterizing part of claim 1.
- a portion of the rod has a rod cross section, which rod cross section has an element with an element height increasing from the center point of the rod cross section to an edge zone.
- the torsional stiffness of a rod with a longitudinal axis is a stiffness of a rod against twisting about the longitudinal axis of the rod.
- torsional stiffness is only possible when an orientation of the element at a different angle to the longitudinal axis.
- the element and the longitudinal axis are at an angle to one another.
- the sports device according to the invention is particularly suitable for a person swimming in a pool to be fixed to the abutment by means of the rope.
- the person can thus go swimming in the pool at his pace without swimming against the edge of the pool.
- a person who swims can change his direction towards the sports device, so that the rod of the sports device is loaded by torsion.
- the rod of the sports device acts as a spring when it is subjected to bending stress. In the event of torsional deformation, however, the spring action is changed following the current teaching, which is uncomfortable for the swimmer.
- the invention attempts to solve this problem by increasing the torsional stiffness of the rod of the sports device with essentially no change in the flexural strength of the rod in such a way that essentially no torsional deformation occurs or this is prevented.
- the rod can comprise partial regions extending in the longitudinal extension of the rod and having increased torsional rigidity.
- the partial areas of increased torsional stiffness can be linearly variable in the longitudinal direction of the rod.
- a rod according to the invention can be characterized in that sub-areas with increased rigidity are arranged in the area of the abutment. This is also the area in which the greatest amount of torsional stresses occur.
- a portion of the rod has a rod cross-section, which rod cross-section has a torsional stiffness that increases from the center point of the rod cross-section to an edge zone.
- Increased torsional rigidity can be achieved in particular by arranging workpiece elements in an outer region of the cross section of the rod.
- the element height is preferably oriented parallel to a component of the force.
- the torsional stiffness preferably increases gradually or continuously. A sudden increase in the torsional stiffness of the rod would lead to stress peaks in the rod, especially in the cross section of the rod.
- the invention can be characterized in that the rod comprises an I-shaped, U-shaped cross section comprising a web and flanges, the web as the element having an element height increasing from the center point to a flange.
- the desired direction of pull of the rope is at right angles to the longitudinal extension of the web and / or parallel to the longitudinal extension of a flange.
- a box-shaped cross section of the rod can be viewed in the context of the invention as an equivalent cross section to an I-shaped cross section.
- a reinforcing rib can be connected to the web and to a flange, which reinforcing rib as an element has a rib height that increases from the center point to the flange.
- the sports device according to the invention is also based on Figures 1 to 5 discussed, the
- FIGS 1 to 6 show a sports device comprising a rod-shaped abutment with a fixed support 1 at its first end 2 and a second free end 3, which second end 3 is spaced from the first end 2 and at which second end 3 a person performing a movement (in Figure 1 to 5 not shown) can be articulated with a body part via a rope 4.
- a tensile force F is transmitted to the rod via the cable 4, whereby the rod is subjected to bending loads.
- the rod acts as a spring due to its flexural strength.
- the abutment comprises an arch 8 extending upwards essentially in the vertical direction from the first end 2.
- An essentially straight end piece 11 adjoins the arch 8, which end piece 11 comprises the second free end 3.
- the arch 8 comprises two flanges and a web reinforced by a framework.
- the arch 8 has a flexural rigidity that is essentially constant over its extension length.
- the arch 8 is shaped in such a way that the second arch end 10 closer to the second end 3 has a horizontal distance a1 from the first arch end 9 and from the first end 2. Furthermore, the second free end 3 is spaced from the second curved end 10 by a further second horizontal distance a2, the distance a2 in the case of the Figures 1 to 5 embodiment shown is smaller than the distance a1.
- This specification is made with reference to the current teaching, in particular the statics theory of the second order.
- the abutment in the transition between arch 8 and end piece 11 comprises sub-area 5, which sub-area 5 has increased flexural rigidity.
- the sub-area 5 also ensures that the abutment undergoes its main deformation when loaded via the cable 4 in the area of the arch 8.
- the arch 8, the flexural rigidity of which is defined by the material used and by its structural design such as flanges, webs, framework, thus acts as a spring in the abutment according to the invention, while the end piece 11 does not experience any significant deformation.
- the end piece 11 thus acts as a rigid lever.
- a further sub-area 19 is arranged on sub-area 5, which has a bending stiffness that decreases from the first end 2 to the second end 3.
- the further sub-region 19 extends over the entire length of the end piece 11.
- the end piece 11 is thereby more rigid or less easily deformable than the arch 9.
- the sports device according to the invention in the Figures 1 to 6 The embodiment shown is characterized in that the torsional rigidity of the rod is increased in such a way that that no torsional deformations that change the spring action of the rod to an extent that can be felt by the person occur.
- Figure 6 shows a cross section of the rod in the area of the first end 2.
- the torsional moment increases with the distance from the force introduction point at the height point.
- the torsional moment has its maximum at the first end 2.
- the cross-sections of the sub-areas with the elements defining the secondary rigidity and sufficient torsional rigidity do not include any additional measures that increase the torsional rigidity. It was found that, in the area of the first support 2, sufficient torsional rigidity cannot be guaranteed by elements which define the additional rigidity.
- Figure 6 shows the cross section of the first rod element 16.
- the cross section comprises a web 19 and two flanges 20, 21.
- the flanges 20, 21 are connected to the ends of the web 19 so that the web 19 and the flanges 20, 21 have a U-shaped cross section form.
- the flanges 20, 21 and the web 19 are connected by diagonal struts 22.
- the strut 22 has a component height h which rises from the center point 23 outwards and thus in the direction of the flange 21 (h1 is smaller than h2). This results in a torsional rigidity that increases outward from the center point 23.
- the axis 24 of the strut 22, along which the axis 24 the strut 22 has a variable component height h, is oriented at a right angle to the target direction of pull 12 of the rope.
- the axis of the strut is arranged at an angle different from zero degrees to the longitudinal axis of the rod element 16.
- the in Figure 6 The embodiment shown, the struts 22 are designed as diagonals, which diagonals extend between the flanges. The diagonals are arranged at an angle of 30-60 ° to the longitudinal axis of the rod element. Other angles are also conceivable.
- the struts 22 can also be oriented at a right angle to the longitudinal axis. In the case of a substantially perpendicularly oriented rod element, the element extends horizontally or at an angle to the vertical.
- the free end 3 comprises a vertically displaceable bearing 14, via which bearing 14 the cable 4 is articulated on the abutment.
- the end piece 11 comprises an elongated hole through which a bolt is slidably guided.
- the bolt is connected to the rope 4 via an eye.
- the bolt can slide vertically in the elongated hole, the displaceability of the bolt in the elongated hole being lockable. Due to the vertically displaceable bearing 14, the height point 15 of the bearing 14 can be adjusted to the movement of the person.
- the climax 15 and also the length of the rope 4 are preferably selected such that the component of a force F normal to the axis 13 is greater than the component of the force F parallel to the axis 13.
- the abutment comprises a first rod element 16 and a second rod element 17, which rod elements 16, 17 can be coupled to one another by a rigid connection 18.
- the ones in the Figures 1 to 5 The device shown is characterized in that it is transportable. For this reason, the first rod element 16 and the second rod element 17 can be coupled to one another by a rigid connection.
- the two rod elements 16, 17 have a length of approximately one meter, so that they have a handy format.
- the sports device according to the invention comprises a releasable anchorage described below.
- the transportable property of the sports device according to the invention is also achieved in that the sports device has a low weight. This is achieved in particular by the design of the cross section described above, which is characterized by arranging as little material as possible in order to achieve maximum torsional rigidity.
- the abutment can be anchored in a substrate via a mandrel 18.
- the subsurface can be earth, gravel or snow, for example.
- the person skilled in the art is able to select a suitable subsurface into which subsurface the mandrel 18 can be driven with its thread.
- Figure 3 shows that the first rod element 16 and the second rod element 17 can be connected to one another.
- the Figure 7 shows the connector in detail. For the sake of clarity, in Figure 7 some elements have been given reference numbers which are not given reference numbers in the other figures.
- the sports device comprises a plug connection at the transition between the first rod element 16 and the second rod element 17, the second rod element 17 being pushed into the first rod element 16 in a direction parallel to the direction of the rope.
- the rod elements 16, 17 for this purpose comprise elongated projections and matching, likewise elongated recesses 19. The bending moment between the first rod element 16 and the second rod element 17 is transmitted through the projections and recesses 19.
- the plug connection also includes a latching connection.
- a locking element 20 arranged on the second rod element 17 is introduced into a recess arranged in the first rod element 16. This locking connection prevents the first rod element 16 and the second rod element 17 from being separated from one another, in particular as a result of a snapback movement.
- the projections and the recesses 19 are designed to fit into one another. By choosing the material of the recesses and the projections 19, the spring action of the plug connection can be determined.
- the one in the Figures 1 to 7 The sports device shown is the plug connection, in particular the area around the depressions and the projections made of the same material as the other parts of the sports device. For this reason, the plug connection has no other flexural strength than the other parts.
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Tools (AREA)
- Bridges Or Land Bridges (AREA)
Description
Diese Erfindung betrifft ein Sportgerät umfassend
ein als ein Stab ausgebildetes Widerlager mit einem starren Auflager an ihrem ersten Ende und ein zweites Ende, welches zweites Ende als ein freies Ende ausgebildet ist und an welchem zweiten Ende eine eine Bewegung ausführende Person mit einem Körperteil über ein Seil unter Ausübung einer Kraft auf das zweite Ende verbindbar ist.This invention relates to sports equipment comprising
an abutment designed as a rod with a rigid support at its first end and a second end, which second end is designed as a free end and at which second end a person executing a movement with a body part over a rope while exerting a force on the second end is connectable.
Eine ähnliche Vorrichtung ist aus
Die in den oben angeführten Dokumenten beschriebenen Sportgeräten weisen allesamt den Nachteil auf, dass bei Belastung der Stange eine Deformation auch in Form einer Torsion der Stange auftreten kann. Dies kann insbesondere dann geschehen, wenn über das Seil eine Kraft mit einer von einer Sollrichtung abweichenden Kraft auf die Stange wirkt. Die Stange des Sportgeräts kann als eine Feder wirken und auf die sich bewegende Person eine Rückstellkraft ausüben. Der gängigen Lehre folgende wird bei einer Torsionsdeformation die Federwirkung der Stange verändert, was für die Person unangenehm ist.The sports equipment described in the documents cited above all have the disadvantage that when the bar is loaded, deformation can also occur in the form of torsion of the bar. This can happen in particular when a force with a force deviating from a desired direction acts on the rod via the cable. The rod of the sports equipment can act as a spring and exert a restoring force on the moving person. According to the current teaching, the spring action of the rod is changed in the event of torsional deformation, which is uncomfortable for the person.
Die im Folgenden offenbarte Erfindung stellt sich die Aufgabe, eine Stange als Widerlager bereitzustellen, welche Stange auch bei einer veränderlichen Torsionsbelastung ein konstante Federwirkdung über das Seil auf die sich bewegende Person ausübt, sich durch eine geringe Torsionsdeformation auszeichnet.The invention disclosed below has the object of providing a rod as an abutment, which rod exerts a constant spring effect on the moving person via the rope even with a variable torsional load, and is characterized by a low torsional deformation.
Die Erfindung löst dies durch die Ausbildung des erfindungsgemäßen Sportgerätes gemäß dem kennzeichnenden Teil des Anspruches 1.The invention solves this by designing the sports device according to the invention in accordance with the characterizing part of
Erfindungsgemäß wird die technische Aufgabe dadurch gelöst, dass
ein Teilbereich des Stabes einen Stabquerschnitt aufweist, welcher Stabquerschnitt ein Element mit einer vom Zentrumspunkt des Stabquerschnittes zu einer Randzone ansteigenden Elementhöhe aufweist.According to the invention, the technical problem is achieved in that
a portion of the rod has a rod cross section, which rod cross section has an element with an element height increasing from the center point of the rod cross section to an edge zone.
Die Torsionssteifigkeit eines Stabes mit einer Längsachse ist eine Steifigkeit eines Stabes gegen ein Verdrehen um die Längsachse des Stabes. Der Fachmann erkennt, dass eine Torsionssteifigkeit nur bei einer Orientierung des Elementes in einem zu der Längsachse unterschiedlichen Winkel. Das Element und die Längsachse weisen zu einander einen Winkel auf.The torsional stiffness of a rod with a longitudinal axis is a stiffness of a rod against twisting about the longitudinal axis of the rod. Those skilled in the art will recognize that torsional stiffness is only possible when an orientation of the element at a different angle to the longitudinal axis. The element and the longitudinal axis are at an angle to one another.
Das erfindungsgemäße Sportgerät eignet sich insbesondere dazu, dass eine in einem Pool schwimmende Person mittels des Seiles am Widerlager fixiert wird. Die Person kann sohin im Pool schwimmend seine Tempi machen, ohne gegen den Rand des Pools zu schwimmen. Insbesondere eine schwimmende Person kann seine Richtung zu dem Sportgerät ändern, sodass das die Stange des Sportgerätes durch eine Torsion belastet wird.The sports device according to the invention is particularly suitable for a person swimming in a pool to be fixed to the abutment by means of the rope. The person can thus go swimming in the pool at his pace without swimming against the edge of the pool. In particular, a person who swims can change his direction towards the sports device, so that the rod of the sports device is loaded by torsion.
Der Fachmann erkennt, dass die Stange des Sportgerätes bei Beanspruchung auf Biegung als eine Feder wirkt. Bei einer Torsionsdeformation wird jedoch der gängigen Lehre folgend die Federwirkung geändert, was für den Schwimmer unangenehm ist.The person skilled in the art recognizes that the rod of the sports device acts as a spring when it is subjected to bending stress. In the event of torsional deformation, however, the spring action is changed following the current teaching, which is uncomfortable for the swimmer.
Die Erfindung versucht dieses Problem zu lösen, indem die Torsionssteifigkeit der Stange des Sportgerätes bei im Wesentlichen keiner Veränderung der Biegesteifigkeit der Stange derart erhöht wird, dass im Wesentlichen keine Torsionsdeformation auftreten oder diese unterbunden werden. Die Stange kann sich in Längserstreckung der Stange erstreckende Teilbereiche mit einer erhöhten Torsionssteifigkeit umfassen. Die Teilbereiche der erhöhten Torsionssteifigkeit können in Längsrichtung der Stange linear veränderlich sein.The invention attempts to solve this problem by increasing the torsional stiffness of the rod of the sports device with essentially no change in the flexural strength of the rod in such a way that essentially no torsional deformation occurs or this is prevented. The rod can comprise partial regions extending in the longitudinal extension of the rod and having increased torsional rigidity. The partial areas of increased torsional stiffness can be linearly variable in the longitudinal direction of the rod.
Eine erfindungsgemäße Stange kann sich dadurch auszeichnen, dass Teilbereiche mit einer erhöhten Steifigkeit im Bereich des Widerlagers angeordnet sind. Dies ist auch jener Bereich, in welchem die betragsmäßig größten Torsionsspannungen auftreten.A rod according to the invention can be characterized in that sub-areas with increased rigidity are arranged in the area of the abutment. This is also the area in which the greatest amount of torsional stresses occur.
Ein Teilbereich des Stabes weist einen Stabquerschnitt auf, welcher Stabquerschnitte eine vom Zentrumspunkt des Stabquerschnittes zu einer Randzone ansteigende Torsionssteifigkeit aufweist.A portion of the rod has a rod cross-section, which rod cross-section has a torsional stiffness that increases from the center point of the rod cross-section to an edge zone.
Eine erhöhte Torsionssteifigkeit kann insbesondere durch die Anordnung von Werkstückelementen in einem Außenbereich des Querschnittes des Stabes erreicht werden.Increased torsional rigidity can be achieved in particular by arranging workpiece elements in an outer region of the cross section of the rod.
Vorzugsweise ist die Elementhöhe parallel zu einer Komponente der Kraft orientiert.The element height is preferably oriented parallel to a component of the force.
Vorzugsweise nimmt die Torsionssteifigkeit verlaufend oder kontinuierlich zu. Ein sprunghafter Anstieg der Torsionssteifigkeit der Stange würde zu Spannungsspitzen in der Stange, insbesondere im Querschnitt der Stange führen.The torsional stiffness preferably increases gradually or continuously. A sudden increase in the torsional stiffness of the rod would lead to stress peaks in the rod, especially in the cross section of the rod.
Die Erfindung kann sich dadurch auszeichnen, dass der Stab einen I-förmigen, U-förmigen Querschnitt umfassend einen Steg und Flansche umfasst, wobei der Steg als das Element eine vom Zentrumspunkt zu einem Flansch ansteigende Elementhöhe aufweist.The invention can be characterized in that the rod comprises an I-shaped, U-shaped cross section comprising a web and flanges, the web as the element having an element height increasing from the center point to a flange.
Die Sollzugrichtung des Seiles ist im rechten Winkel zu der Längserstreckung des Steges und/oder parallel zu der Längserstreckung eines Flansches sein.The desired direction of pull of the rope is at right angles to the longitudinal extension of the web and / or parallel to the longitudinal extension of a flange.
Ein kastenförmiger Querschnitt der Stange kann im Rahmen der Erfindung als ein äquivalenter Querschnitt zu einem I-förmigen Querschnitt angesehen werden.A box-shaped cross section of the rod can be viewed in the context of the invention as an equivalent cross section to an I-shaped cross section.
Es kann am Steg und an einem Flansch eine Verstärkungsrippe angeschlossen sein, welche Verstärkungsrippe als Element eine vom Zentrumspunkt zum Flansch ansteigende Rippenhöhe aufweist.A reinforcing rib can be connected to the web and to a flange, which reinforcing rib as an element has a rib height that increases from the center point to the flange.
Das erfindungsgemäße Sportgerät wird auch anhand der
Figurenbeschreibung und die Figuren keinesfalls einschränkend auf den Gegenstand der Erfindung zu interpretieren sind. Der Gegenstand der Erfindung wird durch die Ansprüche definiert.Description of the figures and the figures are in no way to be interpreted as limiting the subject matter of the invention. The subject matter of the invention is defined by the claims.
Der Fachmann ist jedoch in der Lage die in den Figuren beschriebenen Ausführungsformen des erfindungsgemäßen Sportgerätes miteinander oder mit dem obenstehenden allgemeinen Teil der Beschreibung zu kombinieren.However, the person skilled in the art is able to combine the embodiments of the sports device according to the invention described in the figures with one another or with the above general part of the description.
In den Figuren sind die nachstehenden Elemente durch die vorangestellten Bezugszeichen gekennzeichnet.
- 1
- festes Auflager
- 2
- erstes Ende
- 3
- zweites freies Ende
- 4
- Seil
- 5
- Teilbereich
- 6
- Solldeformationsrichtung
- 7
- Deformationsrichtung
- 8
- Bogen
- 9
- erstes Bogenende
- 10
- zweites Bogenende
- 11
- Endstück
- 12
- Seilzugrichtung
- 13
- Achse des Widerlagers
- 14
- vertikal verschiebliches Lager
- 15
- Höhenpunkt
- 16
- erstes Stangenelement
- 17
- zweites Stangenelement
- 18
- Dorn
- 19
- Vorsprünge, Ausnehmungen
- 20
- Rastelement
- 1
- fixed support
- 2
- first end
- 3
- second free end
- 4th
- rope
- 5
- Section
- 6th
- Target deformation direction
- 7th
- Deformation direction
- 8th
- bow
- 9
- first arch end
- 10
- second arch end
- 11
- End piece
- 12
- Cable pull direction
- 13
- Axis of the abutment
- 14th
- vertically movable bearing
- 15th
- High point
- 16
- first rod element
- 17th
- second rod element
- 18th
- mandrel
- 19th
- Projections, recesses
- 20th
- Locking element
Die
Das Widerlager umfasst einen sich vom ersten Ende 2 sich im Wesentlichen in vertikaler Richtung nach oben erstreckenden Bogen 8. An den Bogen 8 schließt ein sich im Wesentlichen gerade erstreckendes Endstück 11 an, welches Endstück 11 das zweite freie Ende 3 umfasst. Der Bogen 8 umfasst zwei Flansche und einen durch ein Fachwerk verstärkten Steg. Der Bogen 8 weist eine im Wesentlichen über seine Erstreckungslänge konstante Biegesteifigkeit auf.The abutment comprises an arch 8 extending upwards essentially in the vertical direction from the
Der Bogen 8 ist so ausgeformt, dass das dem zweiten Ende 3 nähere zweite Bogenende 10, einen horizontalen Abstand a1 zum ersten Bogenende 9 und zum ersten Ende 2 aufweist. Es ist weiters das zweite freie Ende 3 vom zweiten Bogenende 10 um einen weiteren zweiten horizontalen Abstand a2 beabstandet, wobei der Abstand a2 bei dem in den
Das zweite freie Ende 3 ist somit um einen Abstand a=a1+a2 vom ersten Ende horizontal beabstandet. Durch den Abstand a beziehungsweise der daraus resultierenden Neigung der Achse des Widerlagers 13, welche Achse das erste Ende 2 und das zweite Ende 3 durchläuft, in Richtung der Seilzugrichtung 12 wird die Solldeformationsrichtung 6 des Widerlagers durch eine über das Seil 4 aufgebrachte Kraft vorgegeben. Diese Vorgabe erfolgt unter Verweis auf die gängige Lehre, insbesondere der Statik Theorie II. Ordnung.The second
Um ein Auskicken des Widerlagers in eine Deformationsrichtung 7 zu verhindern, welche Deformationsrichtung 7 von der Solldeformationsrichtung 6 unterschiedlich ist, umfasst das Widerlager im Übergang zwischen Bogen 8 und Endstück 11 den Teilbereich 5, welcher Teilbereich 5 eine erhöhte Biegesteifigkeit aufweist. Durch den Teilbereich 5 wird auch erreicht, dass das Widerlager bei Belastung über das Seil 4 im Bereich des Bogens 8 seine hauptsächliche Deformation erfährt. Der Bogen 8, dessen Biegesteifigkeit durch das verwendete Material und durch seine strukturelle Ausbildung wie Flansche, Stege, Fachwerk definiert wird, wirkt somit als Feder im erfindungsgemäßen Widerlager, während das Endstück 11 keine wesentliche Deformation erfährt. Das Endstück 11 wirkt somit als steifer Hebel.In order to prevent the abutment from kicking out in a
Es ist an den Teilbereich 5 ein weiterer Teilbereich 19 angeordnet, welcher eine vom ersten Ende 2 zum zweiten Ende 3 abnehmende Biegesteifigkeit aufweist. Der weitere Teilbereich 19 erstreckt sich über die gesamte Länge des Endstückes 11. Das Endstück 11 ist hierdurch steifer oder weniger leicht deformierbar als der Bogen 9. Die Ausbildung des Endstückes 11 als im Vergleich zu dem Bogen 8 als das steifere Element und der damit verbundenen Definition der hauptsächlichen Deformation im Bogen 8 wird erreicht, dass die Rückstellkraft für eine von der Solldeformationsrichtung 6 unterschiedliche Deformationsrichtung 7 einer Deformation aufgrund des wirksamen Hebels maximal ist.A
Neben dem Problem des Ausknickens besteht auch das Problem der Torsionsbelastung, welche Torsionsbelastung eine Torsionsdeformation der Stange hervorrufen kann. Durch eine Torsionsdeformation wird der gängigen Lehre folgend die Federwirkung der Stange geändert, was für die Person unangenehm ist. Das erfindungsgemäße Sportgerät in der in den
Nachdem die Konzeption des Sportgerätes zur Wahrung der Transportfähigkeit der Gewichtsminimierung unterliegt, umfassen die Querschnitte der Teilbereiche mit den die Beigesteifigkeit und eine ausrechende Torsionssteifigkeit definierenden Elemente keine zusätzlichen, die Torsionssteifigkeit erhöhende Maßnahmen. Es zeigte sich, dass im Bereich des ersten Auflagers 2 die ausreichende Torsionssteifigkeit nicht durch Elemente gewährleistet werden kann, welche Elemente die Beigesteifigkeit definieren.Since the conception of the sports equipment is subject to weight minimization in order to maintain its transportability, the cross-sections of the sub-areas with the elements defining the secondary rigidity and sufficient torsional rigidity do not include any additional measures that increase the torsional rigidity. It was found that, in the area of the
Die Achse der Strebe ist in einem von Null Grad unterschiedlichen Winkel zu der Längsachse des Stangenelementes 16 angeordnet. Bei dem in
Die Streben 22 können auch in einem rechten Winkel zu der Längsachse orientiert sein. Bei einem in Wesentlichen senkrecht orientierte Stangenelement erstreckt sich das Element horizontal oder in einem Winkel zu der Vertikalen.The
Das freie Ende 3 umfasst ein vertikal verschiebliches Lager 14, über welches Lager 14 das Seil 4 am Widerlager angelenkt ist. Das Endstück 11 umfasst hierzu ein Langloch, durch welches verschiebbar ein Bolzen geführt ist. Der Bolzen ist über ein Auge mit dem Seil 4 verbunden. Der Bolzen kann im Langloch vertikal gleiten, wobei die Verschiebbarkeit des Bolzens im Langloch sperrbar ist. Durch das vertikal verschiebbare Lager 14 ist der Höhenpunkt 15 des Lagers 14 an die Bewegung der Person einstellbar.The
Vorzugsweise wird der Höhepunkt 15 und auch die Länge des Seiles 4 so gewählt, dass die normal auf die Achse 13 stehende Komponente einer Kraft F größer ist als die zu der Achse 13 parallele Komponente der Kraft F.The
Das Widerlager umfasst ein erstes Stangenelement 16 und ein zweites Stangenelement 17, welche Stangenelemente 16, 17 durch eine biegesteife Verbindung 18 miteinander koppelbar sind. Die in den
Weiters umfasst das erfindungsgemäße Sportgerät eine unten beschriebene lösbare Verankerung.Furthermore, the sports device according to the invention comprises a releasable anchorage described below.
Die transportable Eigenschaft des erfindungsgemäßen Sportgerätes wird auch dadurch erreicht, dass das Sportgerät ein geringes Gewicht aufweist. Dies wird insbesondere durch die oben beschriebene Ausbildung des Querschnittes erreicht, welche dadurch geprägt ist, möglichst wenig Material anzuordnen, um eine maximale Torsionssteifigkeit zu erreichen.The transportable property of the sports device according to the invention is also achieved in that the sports device has a low weight. This is achieved in particular by the design of the cross section described above, which is characterized by arranging as little material as possible in order to achieve maximum torsional rigidity.
Das Widerlager ist über einen Dorn 18 in einem Untergrund verankerbar. Der Untergrund kann beispielsweise Erde, Schotter oder Schnee sein. Der Fachmann ist in der Lage, einen geeigneten Untergrund auswählen, in welchen Untergrund der Dorn 18 mit seinem Gewinde eintreibbar ist.The abutment can be anchored in a substrate via a
Das Sportgerät umfasst am Übergang zwischen dem ersten Stangenelement 16 und dem zweiten Stangenelement 17 eine Steckverbindung, wobei das zweite Stangenelement 17 in einer Richtung parallel zu der Richtung des Seiles in das erste Stangenelement 16 geschoben wird. Die Stabelemente 16, 17 umfassen hierzu längliche Vorsprünge und hierzu passende, ebenso längliche Ausnehmungen 19. Durch die Vorsprünge und Ausnehmungen 19 wird das Biegemoment zwischen dem ersten Stangenelement 16 und dem zweiten Stangenelement 17 übertragen.The sports device comprises a plug connection at the transition between the
Die Steckverbindung umfasst auch eine Rastverbindung. Wie in
Die Vorsprünge und die Vertiefungen 19 sind ineinanderpassend ausgeführt. Durch die Wahl des Werkstoffes der Vertiefungen und der Vorsprünge 19 kann die Federwirkung der Steckverbindung bestimmt werden. Bei dem in den
Claims (4)
- A sports device comprising
an abutment formed as a rod having a rigid support (1) at its first end (2) and a second end (3), which second end (3) is formed as a free end and to which second end (3) a person performing a movement can be connected at a body part via a rope (4) by exerting a force on the second end (3),
characterised in that
a subregion of the rod has a rod cross-section, which rod cross-section has an element having an element height increasing from the central point of the rod cross-section towards a peripheral zone. - The sports device of claim 1, characterised in that
the element height is oriented in parallel with a component of the force. - The sports device of any one of claims 1 and 2, characterised in that
the rod comprises an I-shaped, U-shaped cross-section comprising a web and flanges, wherein the web as the element has an element height increasing from the central point towards one flange. - The sports device of claim 3, characterised in that
a reinforcing rib is linked to the web and one flange, which reinforcing rib as the element has a rib height increasing from the central point towards the flange.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018128437.3A DE102018128437A1 (en) | 2018-11-13 | 2018-11-13 | Sports equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3653274A1 EP3653274A1 (en) | 2020-05-20 |
EP3653274B1 true EP3653274B1 (en) | 2021-02-10 |
Family
ID=68531467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19208350.9A Active EP3653274B1 (en) | 2018-11-13 | 2019-11-11 | Sports device |
Country Status (3)
Country | Link |
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EP (1) | EP3653274B1 (en) |
DE (1) | DE102018128437A1 (en) |
ES (1) | ES2864413T3 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202004000811U1 (en) | 2004-01-20 | 2004-04-01 | Kubitschek, Markus Albert | Restraint device to prevent a swimmer from drifting away |
TWI564055B (en) * | 2014-10-29 | 2017-01-01 | 宜強科技股份有限公司 | Swim trainning device |
WO2016155691A2 (en) * | 2015-04-01 | 2016-10-06 | Markus Rensburg | Mounting kit for terrace construction |
AT518505A1 (en) | 2016-04-06 | 2017-10-15 | Markus Kubitschek | Rod-shaped abutment for a moving person |
-
2018
- 2018-11-13 DE DE102018128437.3A patent/DE102018128437A1/en not_active Withdrawn
-
2019
- 2019-11-11 EP EP19208350.9A patent/EP3653274B1/en active Active
- 2019-11-11 ES ES19208350T patent/ES2864413T3/en active Active
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Also Published As
Publication number | Publication date |
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ES2864413T3 (en) | 2021-10-13 |
DE102018128437A1 (en) | 2020-05-14 |
EP3653274A1 (en) | 2020-05-20 |
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