WO2003011400A1 - Training equipment, in particular an elliptical trainer - Google Patents

Training equipment, in particular an elliptical trainer Download PDF

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Publication number
WO2003011400A1
WO2003011400A1 PCT/EP2002/007606 EP0207606W WO03011400A1 WO 2003011400 A1 WO2003011400 A1 WO 2003011400A1 EP 0207606 W EP0207606 W EP 0207606W WO 03011400 A1 WO03011400 A1 WO 03011400A1
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WO
WIPO (PCT)
Prior art keywords
flywheel
training device
pivot bearing
drive shaft
foot
Prior art date
Application number
PCT/EP2002/007606
Other languages
German (de)
French (fr)
Inventor
Wilhelm Daum
Original Assignee
Daum Gmbh & Co. Kg
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 Daum Gmbh & Co. Kg filed Critical Daum Gmbh & Co. Kg
Priority to EP02764650A priority Critical patent/EP1409085B1/en
Priority to DE50212023T priority patent/DE50212023D1/en
Publication of WO2003011400A1 publication Critical patent/WO2003011400A1/en

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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
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
    • A63B22/0664—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing an elliptic movement
    • 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
    • A63B21/15—Arrangements for force transmissions
    • A63B21/157—Ratchet-wheel links; Overrunning clutches; One-way clutches
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/0002—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements involving an exercising of arms
    • A63B22/001—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements involving an exercising of arms by simultaneously exercising arms and legs, e.g. diagonally in anti-phase
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
    • A63B22/0664—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing an elliptic movement
    • A63B2022/067—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing an elliptic movement with crank and handles being on opposite sides of the exercising apparatus with respect to the frontal body-plane of the user, e.g. the crank is behind and handles are in front of the user
    • 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
    • A63B21/22—Resisting devices with rotary bodies
    • A63B21/225—Resisting devices with rotary bodies with flywheels

Definitions

  • Training device in particular elliptical trainer
  • the invention is directed to a training device, in particular in the form of a so-called elliptical trainer, each comprising a base plate for the left and right foot of the exercising person, which is arranged on a foot bar, the front end of the foot bar being pivotable with a bar via a pivot bearing is connected, which in turn is pivotally mounted above the pivot bearing on a support column via a further pivot bearing, handles being formed above this further pivot bearing, the rear end of the foot rod being pivotably connected to a lever arm via a third pivot bearing, and two of which are about Engage lever arms offset by 180 ° on an axis of rotation which is connected to a drive shaft of a flywheel that can be braked by an eddy current brake.
  • a training device in particular in the form of a so-called elliptical trainer, each comprising a base plate for the left and right foot of the exercising person, which is arranged on a foot bar, the front end of the foot bar being pivotable with a bar via a pivot bearing is connected
  • Traming devices of this type are particularly suitable for mimicking a running movement from the movement sequence and, like the ergometer stationary bike, to make the training performance adjustable by changing the pedal resistance.
  • the object is achieved in that a freewheel is arranged between the drive shaft and the flywheel.
  • the freewheel enables a torque to be transmitted from the drive shaft to the flywheel when the drive shaft rotates. If the training person interrupts the torque transmission to the drive shaft, the freewheel causes the flywheel to continue rotating but does not transmit any torque to the drive shaft. As a result, the base plates of the elliptical trainer are not driven by the flywheel and a risk of injury or uncomfortable external movement are avoided.
  • the freewheel advantageously comprises a braking mechanism. Due to the elliptical sequence of movements, the flywheel is driven to different degrees by the exercising person with a complete rotation of the axis of rotation, which leads to the flywheel “leading ahead”. The training is thereby impaired, since the feeling arises that the pedaling occurs temporarily without resistance.
  • the brake mechanism is designed as a slip clutch. In this way, an economical and particularly functionally reliable implementation of the braking mechanism is achieved.
  • a clutch disk is provided between the flywheel and a receiving disk arranged on the drive shaft, the clutch disk having a felt brake pad on the side facing the flywheel.
  • the receiving disc comprises recesses for receiving spring elements, which are preferably designed as compression springs. The spring elements press the clutch disc with the brake pad against the flywheel, whereby a braking force is applied to the flywheel.
  • the braking force or frictional force between the brake pad and the flywheel is set via the spring elements such that the
  • the flywheel does not lead the uneven drive resulting from the elliptical motion sequence. In addition, it is ensured that the friction between the brake lining and the flywheel does not lead to an abrupt stopping of the base plates driven by the drive shaft.
  • the clutch disc has a projection which engages in the receiving disc to prevent relative movement.
  • Fig. 1 is a perspective view of an elliptical from obliquely behind and
  • FIG. 2 shows a longitudinal section through the brake mechanism according to the invention.
  • a traming device shown in the drawing a so-called elliptical trainer, comprises a base body 1 which is essentially designed as a housing and which stands on two skids 2, 3 arranged transversely to the longitudinal direction.
  • a support column 4 extends from the base body 1 upwards or diagonally to the front, with a substantially horizontal bearing axis 5, which is arranged transversely to its longitudinal extension and on which lugs 6, 7 forming pivot bearings are pivotably mounted.
  • the lower end of the rods 8, 9 opens into pivot bearings 12, 13 which are pivotally connected to foot rods 14, 15, on which base plates 16 are arranged, which have a circumferential edge 17, around a foot standing on the base plate 16 towards a training person drive or to prevent unintentional sliding down.
  • the rear end of the foot rods 14 in turn opens into a pivot bearing 18 which is formed on a lever arm 19 which can be rotated about an axis of rotation 20, so that a flywheel 21 located in the interior of the base body 1 is driven, on which bicycles driven by stationary bicycles are driven.
  • a flywheel 21 located in the interior of the base body 1 is driven, on which bicycles driven by stationary bicycles are driven.
  • known acts a controllable or regulable eddy current brake in order to be able to specify a certain desired training performance.
  • the axis of rotation 20 runs horizontally and has a belt guide 22.
  • the flywheel 21 is arranged on a drive shaft 23, which likewise comprises a belt guide 24 at one shaft end.
  • the two belt guides 22, 24 are non-rotatably connected to the axis of rotation 20 and to the drive shaft 23.
  • a drive belt 25, which together form a belt transmission 26, is guided around the belt guides 22, 24.
  • a bearing section 27 is provided for mounting the drive shaft 23, which consists of two ball bearings 28.
  • the ball bearings 28 are fixed by a press fit, the flywheel-side ball bearing 28 abutting a shaft extension 30.
  • the flywheel 21 also bears on the side facing away from the bearing section 27 against the shaft extension 30 via a locking ring 31, thereby preventing an axial displacement of the flywheel 21.
  • a freewheel 32 is arranged between the drive shaft 23 and the flywheel 21.
  • the freewheel 32 is a commercially available freewheel which has roller-like clamping bodies 33 for torque transmission in a cage 34.
  • the outer surface of the cage 34 is rotatably connected to the flywheel 21.
  • the freewheel 32 is axially fixed in position on the drive shaft 23 by a press fit.
  • a clutch disc 35 bears against the flywheel 21 on the side facing away from the belt transmission 26, the clutch disc 35 on the side facing the flywheel 21 having a brake made of felt. covering 36.
  • the brake pad 36 is glued to the clutch disc 35.
  • a receiving disc 37 with four recesses 38 is screwed for receiving a helical spring 39 by means of a central fastening screw 40.
  • the recesses 38 are open on the side facing the clutch disc 35.
  • the clutch disc 35 comprises a projection 41 which engages in a corresponding recess 42 of the receiving disc 37.
  • the exercising person climbs with one foot onto each of the base plates 16 and grips the handles 10, 11 with their hands, the handles 10, 11 with the hands on the one hand in the direction of the double arrows 43 and back be moved, and on the other hand over the feet and the base plates 16 a running-like alternating pedaling movement or load is carried out left and right, so that the 180 ° staggered lever arms 19 rotate about the axis of rotation 20 and in this way via the drive belt 25 Drive the drive shaft 23.
  • the torque is transmitted from the drive shaft 23 to the flywheel 21 by the clamping bodies 33 of the freewheel 32, which are arranged between the driving drive shaft 23 and the driven flywheel 21. If the drive shaft 23 rotates faster than the flywheel 21, the clamping bodies 33 are clamped between the drive shaft 23 and the cage 34, which causes the flywheel 21 to be carried along. In contrast, if the flywheel 21 rotates faster than the drive shaft 23, the power transmission is interrupted. In order to prevent the flywheel 21 from advancing during training in the uneven drive due to the elliptical movement sequence, the helical springs 39 press the clutch disc 35 with the brake pad 36 against the flywheel 21, as a result of which the flywheel 21 is braked. The projection 41 of the clutch disk 35 prevents a relative movement to the receiving disk 37.
  • the pretensioning of the coil springs 39 is selected such that the flywheel 21 no longer tends to lead when the drive is uneven, and at the same time there is still no risk of injury from the stand plates 16 driven when the drive shaft 23 is stopped.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Rehabilitation Tools (AREA)
  • Lubricants (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention relates to training equipment, in particular an elliptical trainer, comprising a respective standing platform for the left and right foot of the user, each platform being located on a respective foot bar. The front end of the foot bar is connected by means of a pivot bearing to a bar in such a way that it can pivot, said bar being in turn pivotally mounted on a supporting column above the pivot bearing by means of an additional pivot bearing. Hand grips are configured above said additional pivot bearing. The rear end of the foot bar is connected in a pivoting manner to a lever arm by means of a third pivot bearing, two lever arms of this type, which are offset by 180°, engaging with a rotational shaft (20), which is connected to a drive shaft (23) of a flywheel (21) that can be braked by means of an eddy-current brake. The invention is characterised in that a free-wheel (32) is provided between the drive shaft (23) and the flywheel (21).

Description

Trainingsgerät, insbesondere EllipsentrainerTraining device, in particular elliptical trainer
Die Erfindung richtet sich auf ein Trainingsgerät, insbesondere in Form eines sogenannten Ellipsentrainers, umfassend je eine Standplatte für den linken und rechten Fuß der trainierenden Person, die an je einer Fußstange angeordnet ist, wobei das vordere Ende der Fußstange über ein Schwenklager schwenkbar mit einer Stange verbunden ist, die ihrerseits oberhalb des Schwenklagers an einer Tragsäule über ein weiteres Schwenklager schwenkbar gelagert ist, wobei oberhalb dieses weiteren Schwenklagers Handgriffe ausgebildet sind, wobei das rückseitige Ende der Fußstange über ein drittes Schwenklager schwenkbar mit einem Hebelarm verbunden ist, und wobei zwei derartige um 180° gegeneinander versetzte Hebelarme an einer Drehachse angreifen, die mit einer Antriebswelle eines über eine Wirbelstrombremse abbremsbaren Schwungrads verbunden ist.The invention is directed to a training device, in particular in the form of a so-called elliptical trainer, each comprising a base plate for the left and right foot of the exercising person, which is arranged on a foot bar, the front end of the foot bar being pivotable with a bar via a pivot bearing is connected, which in turn is pivotally mounted above the pivot bearing on a support column via a further pivot bearing, handles being formed above this further pivot bearing, the rear end of the foot rod being pivotably connected to a lever arm via a third pivot bearing, and two of which are about Engage lever arms offset by 180 ° on an axis of rotation which is connected to a drive shaft of a flywheel that can be braked by an eddy current brake.
Derartige Tramingsgeräte eignen sich insbesondere dazu, vom Bewegungsablauf eine Lauf bewegung nachzuahmen und dabei ähnlich wie beim Ergometerstandfahrrad die Trainingsleistung einstellbar zu machen, indem der Tretwiderstand verändert wird.Traming devices of this type are particularly suitable for mimicking a running movement from the movement sequence and, like the ergometer stationary bike, to make the training performance adjustable by changing the pedal resistance.
Diese herkömmlichen Trainingsgeräte weisen allerdings den Nachteil auf, daß bei einer Unterbrechung des Trainings die Standplatten des Ellipsentrainers weiterhin aufgrund der im Schwungrad gespeicherten Rotationsenergie angetrieben werden. Dieser ungewollte Antrieb stellt eine enorme Verletzungsgefahr für die trainierende Person dar. Unter hohem Kraftaufwand ist es zwar möglich, das rotierende Schwungrad abzustoppen. Dies bewirkt jedoch, daß ein zwischen der Antriebswelle und dem Schwungrad verlaufender Antriebsriemen auf der Antriebswelle durchrutscht und dadurch beschädigt wird. Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, ein Trainingsgerät der eingangs genannten Art so weiterzubilden, daß ein sicheres Training auf dem Trainingsgerät möglich ist. Des weiteren soll erreicht werden, daß das Trainingsgerät eine besonders hohe Lebensdauer aufweist.These conventional training devices have the disadvantage, however, that if the training is interrupted, the base plates of the elliptical trainer continue to be driven due to the rotational energy stored in the flywheel. This unwanted drive poses an enormous risk of injury to the exercising person. It is possible to stop the rotating flywheel with great effort. However, this causes a drive belt running between the drive shaft and the flywheel to slip on the drive shaft and be damaged thereby. Proceeding from this, the object of the invention is to develop a training device of the type mentioned at the outset so that safe training on the training device is possible. Furthermore, it should be achieved that the training device has a particularly long service life.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß zwischen der Antriebswelle und dem Schwungrad ein Freilauf angeordnet ist.The object is achieved in that a freewheel is arranged between the drive shaft and the flywheel.
Der Freilauf ermöglicht eine Übertragung eines Drehmoments von der Antriebswelle auf das Schwungrad bei einer Drehrichtung der Antriebswelle. Bei Unterbrechung der Drehmomentübertragung auf die Antriebswelle durch die trainierende Person bewirkt der Freilauf, daß das Schwungrad weiter rotiert, aber auf die Antriebswelle kein Drehmoment überträgt. Folg- lieh werden die Standplatten des Ellipsentrainers nicht durch das Schwungrad angetrieben und eine Verletzungsgefahr bzw. eine als unangenehm empfundene Fremdbeweguiig werden vermieden.The freewheel enables a torque to be transmitted from the drive shaft to the flywheel when the drive shaft rotates. If the training person interrupts the torque transmission to the drive shaft, the freewheel causes the flywheel to continue rotating but does not transmit any torque to the drive shaft. As a result, the base plates of the elliptical trainer are not driven by the flywheel and a risk of injury or uncomfortable external movement are avoided.
Vorteilhafterweise umfaßt der Freilauf einen Bremsmechanismus. Auf- grund des elliptischen Bewegungsablaufs wird das Schwungrad bei einer vollständigen Umdrehung der Drehachse unterschiedlich stark von der trainierenden Person angetrieben, was zu einem „Vorauseilen" des Schwungrads führt. Hierdurch wird das Training beeinträchtigt, da das Gefühl auftritt, zeitweise widerstandslos zu treten.The freewheel advantageously comprises a braking mechanism. Due to the elliptical sequence of movements, the flywheel is driven to different degrees by the exercising person with a complete rotation of the axis of rotation, which leads to the flywheel “leading ahead”. The training is thereby impaired, since the feeling arises that the pedaling occurs temporarily without resistance.
Es ist zweckmäßig, daß der Bremsmechanismus als Rutschkupplung ausgebildet ist. Hierdurch wird eine kostengünstige und besonders funktionssichere Realisierung des Bremsmechanismus erreicht.It is expedient that the brake mechanism is designed as a slip clutch. In this way, an economical and particularly functionally reliable implementation of the braking mechanism is achieved.
Gemäß einer vorteilhaften Ausgestaltung ist zwischen dem Schwungrad und einer auf der Antriebswelle angeordneten Aufhahmescheibe eine Kupplungsscheibe vorgesehen, wobei die Kupplungsscheibe an der dem Schwungrad zugewandten Seite einen Bremsbelag aus Filz aufweist. Die Aufhahmescheibe umfaßt Ausnehmungen zur Aufnahme von Federelementen, die vorzugsweise als Druckfedern ausgebildet sind. Die Federele- mente drücken die Kupplungsscheibe mit dem Bremsbelag gegen das Schwungrad, wodurch eine Bremskraft auf das Schwungrad aufgebracht wird.According to an advantageous embodiment, a clutch disk is provided between the flywheel and a receiving disk arranged on the drive shaft, the clutch disk having a felt brake pad on the side facing the flywheel. The receiving disc comprises recesses for receiving spring elements, which are preferably designed as compression springs. The spring elements press the clutch disc with the brake pad against the flywheel, whereby a braking force is applied to the flywheel.
Die Bremskraft bzw. Reibungskraft zwischen dem Bremsbelag und dem Schwungrad ist über die Federelemente derart eingestellt, daß dasThe braking force or frictional force between the brake pad and the flywheel is set via the spring elements such that the
Schwungrad bei dem aus dem elliptischen Bewegungsablauf resultierenden, ungleichmäßigen Antrieb nicht vorauseilt. Außerdem wird dafür gesorgt, daß die Reibung zwischen dem Bremsbelag und der Schwungscheibe nicht zu einem abrupten Abstoppen der durch die Antriebswelle angetrie- benen Standplatten fuhrt.The flywheel does not lead the uneven drive resulting from the elliptical motion sequence. In addition, it is ensured that the friction between the brake lining and the flywheel does not lead to an abrupt stopping of the base plates driven by the drive shaft.
Es ist von großem Vorteil, daß die Kupplungsscheibe einen in die Aufnahmescheibe greifenden Vorsprung zur Verhinderung einer Relativbewegung aufweist.It is of great advantage that the clutch disc has a projection which engages in the receiving disc to prevent relative movement.
Nachfolgend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels in Verbindung mit der Zeichnung näher beschrieben. Dabei zeigen: Fig. 1 eine perspektivische Ansicht eines Ellipsentrainers von schräg hinten undThe invention is described in more detail below on the basis of a preferred exemplary embodiment in conjunction with the drawing. Show: Fig. 1 is a perspective view of an elliptical from obliquely behind and
Fig. 2 einen Längsschnitt durch den erfindungsgemäßen Bremsmechanis- mus.2 shows a longitudinal section through the brake mechanism according to the invention.
Ein in der Zeichnung dargestelltes Tramingsgerät, ein sogenannter Ellipsentrainer, umfaßt einen Grundkörper 1, der im wesentlichen als Gehäuse ausgebildet ist, und der auf zwei quer zur Längsrichtung angeordneten Ku- fen 2, 3 steht.A traming device shown in the drawing, a so-called elliptical trainer, comprises a base body 1 which is essentially designed as a housing and which stands on two skids 2, 3 arranged transversely to the longitudinal direction.
Von dem Grundkörper 1 erstreckt sich nach oben bzw. schräg nach vorne eine Tragsäule 4 mit einer quer zu deren Längserstreckung angeordneten, im wesentlichen horizontal verlaufenden Lagerachse 5, an welcher Schwenklager bildende Ansätze 6, 7 schwenkbar gelagert sind.A support column 4 extends from the base body 1 upwards or diagonally to the front, with a substantially horizontal bearing axis 5, which is arranged transversely to its longitudinal extension and on which lugs 6, 7 forming pivot bearings are pivotably mounted.
Die Ansätze 6, 7 werden von Stangen 8, 9 durchsetzt, an deren Oberseite Handgriffe 10, 11 ausgebildet sind.The approaches 6, 7 are penetrated by rods 8, 9, on the top of which handles 10, 11 are formed.
Das untere Ende der Stangen 8, 9 mündet in Schwenklager 12, 13, die mit Fußstangen 14, 15 schwenkbar verbunden sind, aufweichen Standplatten 16 angeordnet sind, die einen umlaufenden Rand 17 aufweisen, um einen auf der Standplatte 16 stehenden Fuß einer trainierenden Person zu fuhren bzw. ein unbeabsichtigtes seitliches Herabrutschen zu verhindern.The lower end of the rods 8, 9 opens into pivot bearings 12, 13 which are pivotally connected to foot rods 14, 15, on which base plates 16 are arranged, which have a circumferential edge 17, around a foot standing on the base plate 16 towards a training person drive or to prevent unintentional sliding down.
Das hintere Ende der Fußstangen 14 mündet wiederum in ein Schwenklager 18, welches an einem Hebelarm 19 ausgebildet ist, der um eine Drehachse 20 drehbar ist, so daß ein im Inneren des Grundkörpers 1 befindliches Schwungrad 21 angetrieben wird, auf das in von Standfahrrädem be- kannter Weise eine steuerbare bzw. regelbare Wirbelstrombremse einwirkt, um eine bestimmte gewünschte Trainingsleistung vorgeben zu können.The rear end of the foot rods 14 in turn opens into a pivot bearing 18 which is formed on a lever arm 19 which can be rotated about an axis of rotation 20, so that a flywheel 21 located in the interior of the base body 1 is driven, on which bicycles driven by stationary bicycles are driven. known acts a controllable or regulable eddy current brake in order to be able to specify a certain desired training performance.
Die Drehachse 20 verläuft horizontal und weist eine Riemenführung 22 auf. Das Schwungrad 21 ist auf einer Antriebswelle 23 angeordnet, die an einem Wellenende ebenfalls eine Riemenfuhrung 24 umfaßt. Die beiden Riemenführungen 22, 24 sind drehfest mit der Drehachse 20 bzw. mit der Antriebswelle 23 verbunden. Um die Riemenführungen 22, 24 ist ein Antriebsriemen 25 geführt, die zusammen ein Riemengetriebe 26 bilden.The axis of rotation 20 runs horizontally and has a belt guide 22. The flywheel 21 is arranged on a drive shaft 23, which likewise comprises a belt guide 24 at one shaft end. The two belt guides 22, 24 are non-rotatably connected to the axis of rotation 20 and to the drive shaft 23. A drive belt 25, which together form a belt transmission 26, is guided around the belt guides 22, 24.
Zwischen dem Schwungrad 21 und der Riemenfuhrung 24 ist ein Lagerabschnitt 27 zur Lagerung der Antriebswelle 23 vorgesehen, der aus zwei Kugellagern 28 besteht. Die Kugellager 28 sind durch Preßsitz fixiert, wobei das schwungradseitige Kugellager 28 an einem Wellenansatz 30 an- liegt. Das Schwungrad 21 liegt ebenfalls an der dem Lagerabschnitt 27 abgewandten Seite an dem Wellenansatz 30 über einen Sicherungsring 31 an, wodurch eine axiale Verschiebung des Schwungrads 21 verhindert wird.Between the flywheel 21 and the belt guide 24, a bearing section 27 is provided for mounting the drive shaft 23, which consists of two ball bearings 28. The ball bearings 28 are fixed by a press fit, the flywheel-side ball bearing 28 abutting a shaft extension 30. The flywheel 21 also bears on the side facing away from the bearing section 27 against the shaft extension 30 via a locking ring 31, thereby preventing an axial displacement of the flywheel 21.
Zwischen der Antriebswelle 23 und dem Schwungrad 21 ist ein Freilauf 32 angeordnet. Bei dem Freilauf 32 handelt es sich um einen handelsüblichen Freilauf, der walzenartige Klemmkörper 33 zur Drehmomentübertragung in einem Käfig 34 aufweist. Die Außenfläche des Käfigs 34 ist drehfest mit dem Schwungrad 21 verbunden. Der Freilauf 32 ist axial in seiner Lage auf der Antriebswelle 23 durch Preßsitz festgelegt.A freewheel 32 is arranged between the drive shaft 23 and the flywheel 21. The freewheel 32 is a commercially available freewheel which has roller-like clamping bodies 33 for torque transmission in a cage 34. The outer surface of the cage 34 is rotatably connected to the flywheel 21. The freewheel 32 is axially fixed in position on the drive shaft 23 by a press fit.
An dem Schwungrad 21 liegt an der dem Riemengetriebe 26 abgewandten Seite eine Kupplungsscheibe 35 an, wobei die Kupplungsscheibe 35 an der dem Schwungrad 21 zugewandten Seite einen aus Filz gebildeten Brems- belag 36 aufweist. Der Bremsbelag 36 ist auf die Kupplungsscheibe 35 aufgeklebt.A clutch disc 35 bears against the flywheel 21 on the side facing away from the belt transmission 26, the clutch disc 35 on the side facing the flywheel 21 having a brake made of felt. covering 36. The brake pad 36 is glued to the clutch disc 35.
An der schwungradseitigen Stirnseite der Antriebswelle 23 ist eine Auf- nahmescheibe 37 mit vier Ausnehmungen 38 zur Aufnahme von jeweils einer Schraubenfeder 39 mittels einer zentralen Befestigungsschraube 40 angeschraubt. Die Ausnehmungen 38 sind auf der der Kupplungsscheibe 35 zugewandten Seite offen. Die Kupplungsscheibe 35 umfaßt einen Vorsprung 41, der in eine korrespondierende Ausnehmung 42 der Aufnahme- Scheibe 37 greift.On the flywheel-side end of the drive shaft 23, a receiving disc 37 with four recesses 38 is screwed for receiving a helical spring 39 by means of a central fastening screw 40. The recesses 38 are open on the side facing the clutch disc 35. The clutch disc 35 comprises a projection 41 which engages in a corresponding recess 42 of the receiving disc 37.
Zum Trainieren mit einem vorstehend beschriebenen Trainingsgerät steigt die trainierende Person mit je einem Fuß auf je eine der Standplatten 16 und erfaßt mit ihren Händen die Handgriffe 10, 11, wobei mit den Händen die Handgriffe 10, 11 einerseits in Richtung der Doppelpfeile 43 hin- und herbewegt werden, und anderseits über die Füße und die Standplatten 16 eine laufähnliche abwechselnde Tretbewegung bzw. Belastung links und rechts ausgeführt wird, so daß sich die um 180° gegeneinander versetzten Hebelarme 19 um die Drehachse 20 drehen und auf diese Weise über den Antriebsriemen 25 die Antriebswelle 23 antreiben.For training with a training device described above, the exercising person climbs with one foot onto each of the base plates 16 and grips the handles 10, 11 with their hands, the handles 10, 11 with the hands on the one hand in the direction of the double arrows 43 and back be moved, and on the other hand over the feet and the base plates 16 a running-like alternating pedaling movement or load is carried out left and right, so that the 180 ° staggered lever arms 19 rotate about the axis of rotation 20 and in this way via the drive belt 25 Drive the drive shaft 23.
Die Übertragung des Drehmoments von der Antriebswelle 23 auf das Schwungrad 21 erfolgt durch die Klemmkörper 33 des Freilaufs 32, die zwischen der treibenden Antriebswelle 23 und dem angetriebenen Schwungrad 21 angeordnet sind. Dreht sich die Antriebswelle 23 schneller als das Schwungrad 21, so werden die Klemmkörper 33 zwischen der Antriebswelle 23 und dem Käfig 34 festgeklemmt, was eine Mitnahme des Schwungrads 21 bewirkt. Dreht sich dagegen das Schwungrad 21 schneller als die Antriebswelle 23, so wird die Kraftübertragung unterbrochen. Um ein das Training beeinträchtigendes Vorauseilen des Schwungrades 21 bei dem ungleichmäßigem Antrieb aufgrund des elliptischen Bewegungsablaufs zu unterbinden, drücken die Schraubenfedern 39 die Kupplungs- scheibe 35 mit dem Bremsbelag 36 gegen das Schwungrad 21, wodurch das Schwungrad 21 abgebremst wird. Der Vorsprung 41 der Kupplungsscheibe 35 verhindert eine Relativbewegung zu der Aufhahmescheibe 37.The torque is transmitted from the drive shaft 23 to the flywheel 21 by the clamping bodies 33 of the freewheel 32, which are arranged between the driving drive shaft 23 and the driven flywheel 21. If the drive shaft 23 rotates faster than the flywheel 21, the clamping bodies 33 are clamped between the drive shaft 23 and the cage 34, which causes the flywheel 21 to be carried along. In contrast, if the flywheel 21 rotates faster than the drive shaft 23, the power transmission is interrupted. In order to prevent the flywheel 21 from advancing during training in the uneven drive due to the elliptical movement sequence, the helical springs 39 press the clutch disc 35 with the brake pad 36 against the flywheel 21, as a result of which the flywheel 21 is braked. The projection 41 of the clutch disk 35 prevents a relative movement to the receiving disk 37.
Wie bereits erwähnt, ist die Vorspannung der Schraubenfedern 39 so ge- wählt, daß das Schwungrad 21 bei ungleichmäßigem Antrieb nicht mehr zum Vorauseilen neigt, und gleichzeitig eine Verletzungsgefahr durch die beim Abstoppen der Antriebswelle 23 angetriebenen Standplatten 16 noch nicht gegeben ist. As already mentioned, the pretensioning of the coil springs 39 is selected such that the flywheel 21 no longer tends to lead when the drive is uneven, and at the same time there is still no risk of injury from the stand plates 16 driven when the drive shaft 23 is stopped.

Claims

Patentansprüche claims
1. Trainingsgerät, insbesondere Ellipsentrainer, umfassend je eine Standplatte (16) für den linken und rechten Fuß der trainierenden Person, die an je einer Fußstange (14, 15) angeordnet ist, wobei das vordere Ende der Fußstange (14, 15) über ein Schwenklager (12, 13) schwenkbar mit einer Stange (8, 9) verbunden ist, die ihrerseits oberhalb des Schwenklagers (12, 13) an einer Tragsäule (4) über ein weiteres Schwenklager (6, 7) schwenkbar gelagert ist, wobei oberhalb dieses weiteren Schwenklagers (6, 7) Handgriffe (10, 11) ausgebildet sind, wobei das rückseitige Ende der Fußstangen (14, 15) über ein drittes Schwenklager (18) schwenkbar mit einem Hebelarm (19) verbunden ist, und wobei zwei derartige um 180° gegeneinander versetzte Hebelarme (19) an einer Drehachse (20) angreifen, die mit einer Antriebswelle (23) eines über eine Wirbelstrombremse abbremsbaren Schwungrads (21) verbunden ist, dadurch gekennzeichnet, daß zwischen der Antriebswelle (23) und dem Schwungrad (21) ein Freilauf (32) angeordnet ist.1. Training device, in particular elliptical trainer, each comprising a base plate (16) for the left and right foot of the exercising person, which is arranged on a respective foot bar (14, 15), the front end of the foot bar (14, 15) over a Pivot bearing (12, 13) is pivotally connected to a rod (8, 9), which in turn is pivotably mounted above the pivot bearing (12, 13) on a support column (4) via a further pivot bearing (6, 7), above this further pivot bearing (6, 7) handles (10, 11) are formed, the rear end of the foot poles (14, 15) being pivotally connected to a lever arm (19) via a third pivot bearing (18), and two of which are 180 ° mutually offset lever arms (19) engage on an axis of rotation (20) which is connected to a drive shaft (23) of a flywheel (21) which can be braked by an eddy current brake, characterized in that between the drive shaft (23) and the flywheel (21) e is arranged in freewheel (32).
2. Trainingsgerät nach Anspruch 1, dadurch gekennzeichnet, daß der Freilauf (32) einen Bremsmechanismus (35, 36) umfasst.2. Training device according to claim 1, characterized in that the freewheel (32) comprises a braking mechanism (35, 36).
3. Trainingsgerät nach Anspruch 2, dadurch gekennzeichnet, daß der Bremsmechanismus (35, 36) als Rutschkupplung ausgebildet ist.3. Training device according to claim 2, characterized in that the braking mechanism (35, 36) is designed as a slip clutch.
4. Trainingsgerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zwischen dem Schwungrad (21) und einer auf der An- πϊebswelle (23) angeordneten Aufnahmescheibe (37) eine Kupplungsscheibe (35) vorgesehen ist. 4. Training device according to one of claims 1 to 3, characterized in that a clutch disc (35) is provided between the flywheel (21) and a on the πϊebswelle (23) arranged receiving disc (37).
5. Trainingsgerät nach Anspruch 4, dadurch gekennzeichnet, daß die Kupplungsscheibe (35) an der dem Schwungrad (21) zugewandten Seite einen Bremsbelag (36) aufweist.5. Training device according to claim 4, characterized in that the clutch disc (35) on the flywheel (21) side facing a brake pad (36).
6. Trainingsgerät nach Anspruch 5, dadurch gekennzeichnet, daß der Bremsbelag (36) aus Filz gebildet ist.6. Training device according to claim 5, characterized in that the brake pad (36) is formed from felt.
7. Trainingsgerät nach Anspruch 4, dadurch gekennzeichnet, daß die Aufhahmescheibe (37) Ausnehmungen (38) zur Aufnahme von Federelementen (39) aufweist.7. Training device according to claim 4, characterized in that the receiving disc (37) has recesses (38) for receiving spring elements (39).
8. Trainingsgerät nach Anspruch 7, dadurch gekennzeichnet, daß die Federelemente (39) als Druckfedern ausgebildet sind.8. Training device according to claim 7, characterized in that the spring elements (39) are designed as compression springs.
9. Trainingsgerät nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Federelemente (39) die Kupplungsscheibe (35) mit dem Bremsbelag (36) gegen das Schwungrad (21) drücken.9. Training device according to one of claims 1 to 8, characterized in that the spring elements (39) press the clutch disc (35) with the brake pad (36) against the flywheel (21).
10. Trainingsgerät nach einem der Ansprüche 1 bis 9, dadurch gekenn- zeichnet, daß die Kupplungsscheibe (35) einen in die Aufhahmescheibe (37) greifenden Vorsprung (41) zur Verhinderung einer Relativbewegung aufweist. 10. Training device according to one of claims 1 to 9, characterized in that the clutch disc (35) has a projection (41) engaging in the receiving disc (37) to prevent relative movement.
PCT/EP2002/007606 2001-07-20 2002-07-09 Training equipment, in particular an elliptical trainer WO2003011400A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP02764650A EP1409085B1 (en) 2001-07-20 2002-07-09 Training equipment, in particular an elliptical trainer
DE50212023T DE50212023D1 (en) 2001-07-20 2002-07-09 TRAINING DEVICE, ESPECIALLY ELLIPSENTRAINER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10135442.8 2001-07-20
DE10135442A DE10135442B4 (en) 2001-07-20 2001-07-20 Training device, in particular elliptical trainer

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WO2003011400A1 true WO2003011400A1 (en) 2003-02-13

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EP (1) EP1409085B1 (en)
AT (1) ATE390951T1 (en)
DE (2) DE10135442B4 (en)
WO (1) WO2003011400A1 (en)

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Also Published As

Publication number Publication date
DE10135442A1 (en) 2003-02-13
EP1409085B1 (en) 2008-04-02
ATE390951T1 (en) 2008-04-15
EP1409085A1 (en) 2004-04-21
DE10135442B4 (en) 2005-06-23
DE50212023D1 (en) 2008-05-15

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