EP0565021A1 - Brake device for training apparatus - Google Patents

Brake device for training apparatus Download PDF

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Publication number
EP0565021A1
EP0565021A1 EP93105598A EP93105598A EP0565021A1 EP 0565021 A1 EP0565021 A1 EP 0565021A1 EP 93105598 A EP93105598 A EP 93105598A EP 93105598 A EP93105598 A EP 93105598A EP 0565021 A1 EP0565021 A1 EP 0565021A1
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EP
European Patent Office
Prior art keywords
braking device
rotors
brake disc
brake
spring
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Withdrawn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
EP93105598A
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German (de)
French (fr)
Inventor
Heinz Kettler
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.)
Heinz Kettler Metallwarenfabrik GmbH and Co
Original Assignee
Heinz Kettler Metallwarenfabrik GmbH and Co
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 Heinz Kettler Metallwarenfabrik GmbH and Co filed Critical Heinz Kettler Metallwarenfabrik GmbH and Co
Publication of EP0565021A1 publication Critical patent/EP0565021A1/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • A63B21/00058—Mechanical means for varying the resistance
    • A63B21/00069—Setting or adjusting the resistance level; Compensating for a preload prior to use, e.g. changing length of resistance or adjusting a valve
    • 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
    • A63B21/012—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using frictional force-resisters
    • A63B21/015—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using frictional force-resisters including rotating or oscillating elements rubbing against fixed elements

Definitions

  • the invention relates to a braking device for training devices or physical exercise devices according to the preamble of claim 1.
  • Such a braking device is known from DE-U-9010480.
  • the braking device described in this document is a flywheel which is wrapped by an endless friction or braking band over the largest part of its radial circumference.
  • an exciting deflection roller is provided, by means of which variable tensions can be applied to the brake band and therefore to the flywheel acting as a brake disc.
  • the brake band of the generic brake device is mechanically connected to a slide rod which interacts with an electrical potentiometer, the electrical voltage change of which is visible on a display device.
  • the generic brake device is only suitable for the special purpose of interacting with a measuring device which serves as a power meter.
  • the braking device is provided with two rotors, which can each be set to rotate independently of one another.
  • the rotation of each rotor is transmitted to the brake disc, which, owing to the brake band interacting with it, exerts the respective braking resistor which is dependent on the tension of the brake band.
  • the arrangement of the braking device according to the invention is such that the rotation of one rotor is sufficient to set the brake disc in a movement braked by the brake band without the other rotor being rotated as a result.
  • the braking device according to the invention it is also possible with the braking device according to the invention to simultaneously turn both rotors, which then jointly transmit their rotary movement to the brake disc.
  • This embodiment of the braking device according to the invention has the advantage that a multitude of possible uses are conceivable.
  • it is possible to use the braking device in a physical exercise device which, for example, is provided with handles for strengthening the arm muscles, which, by means of suitable transmission devices, for example cable pulls, set the rotors in rotation when the exercising person actuates the handles.
  • suitable transmission devices for example cable pulls
  • the design of the braking device according to the invention also enables a large number of other possible applications in which it is necessary to overcome adjustable resistances by rotating the rotors, which differ from the respective one in different ways Device can be driven on which the braking device is arranged.
  • a common stationary or device-fixed axis in the form of a pin which is fixed in its end regions while, for example, the brake disc and, preferably to both, in its central region Sides bearing rotors.
  • the rotors are each fastened on a bearing bush assigned to the respective rotor.
  • the bearing bushes are rotatably arranged on the axis, for which there are a variety of storage options. Any type of plain or roller bearings are fundamentally possible in order to arrange the bearing bush for the rotors on the axis so that they can rotate. This type of arrangement ensures that the rotors can rotate relative to one another, in extreme cases only one of the rotors being rotated while the other is at least essentially stationary.
  • the brake disc is mounted on the axle by means of a freewheel device, preferably a sleeve freewheel.
  • the freewheel device is arranged such that it overlaps the two bearing bushes of the rotors. This ensures that even if only one of the rotors rotates, the brake disc is also rotated while the other rotor is stationary.
  • the spring force accumulators are designed as spiral springs. These can be arranged in the spring chambers of the rotors, which are each arranged on an externally accessible side of the braking device. In order to make it possible to replace possibly defective spring energy stores, the spring spaces are preferably closed by means of a removable cover.
  • the rotors are designed as rope pulleys.
  • the cable pulleys have circumferential cable guide grooves which are engaged by cables which can be operated, for example, by means of handles which are provided on the device on which the braking device according to the invention is used.
  • the only figure in the drawing shows a sectional view of a braking device 1 according to the invention.
  • the braking device 1 is particularly suitable for training or physical exercise devices, but can also be used with a large number of other devices.
  • the figure shows that the braking device 1 is symmetrical in the example and has a central fixed axis 2.
  • the axis 2 has bearing sections 3 and 4 at its ends, by means of which it can be fixed in place on a device. Between the bearing sections 3 and 4, a middle section 5 is provided which is larger in diameter than the bearing sections 3 and 4.
  • a brake disk 6 is arranged around the central section 5 of the axis 2.
  • the brake disc 6 consists in the example of two half-shells 7 and 8, which are firmly connected to form a uniform brake disc 6.
  • the brake disc 6 has a trough-shaped peripheral surface 9, in which a brake band 10 lies.
  • the brake band 10 wraps around the brake disc 6 at least partially and its tension can be adjusted by means of an adjusting device, not shown in the figure.
  • a variable braking resistor on the brake disk 6 can be set by the variable tension of the brake band 10.
  • the brake disc 6 is fixed in the particularly preferred embodiment shown in the figure on a bearing tube 11.
  • the bearing tube 11 is arranged on two bearing bushes 13 and 14 by means of a freewheel device 12.
  • the freewheel device 12 is preferably designed as a sleeve freewheel according to the type HFL 2530.
  • the figure shows that the freewheel device 12 and the bearing tube 11, which is cylindrical, bridge the bushings 13 and 14, which are separate parts.
  • the bearing bushes 13 and 14 in turn each have a bearing area 15 and 16 with a reduced diameter.
  • the two bearing areas 15 and 16 accommodate the freewheel device 12, which is surrounded by the bearing tube 11 within the bearing areas 15 and 16, as can be seen in detail from the illustration of the figure.
  • the braking device 1 also has two rotors 17 and 18 in the example.
  • the rotors 17 and 18 are mounted on both sides of the brake disc 6 on the axis 2.
  • the rotors 17 and 18 are each on the Bearing bushes 13 and 14 fixed.
  • the illustration of the figure shows that each bearing bushing 13 or 14 is exclusively assigned to the respective rotor 17 or 18.
  • the bearing bushes 13 and 14 are rotatably supported at the end by means of bushings 19 and 20 on the central region 5 of the axis 2.
  • a collar bushing 21 is arranged on the central region 5 of the axis 2, which forms a further bearing for the bearing bushes 13 and 14, so that the bearing bushes 13 and 14 on the central region 5 of the axis 2 relative to each other are rotatably arranged.
  • the rotors 17 and 18 are designed as rope pulleys. For this purpose, they have circumferential, circumferential cable guide grooves 22 and 23. In these grooves 22 and 23, cables, not shown in the drawing, of an actuating device for rotating the rotors 17 and 18 can engage.
  • the arrangement described above makes it possible to rotate each of the rotors 17, 18 independently of the other rotor on the axis 2, each rotary movement of the rotors 17 and 18 being transferable to the brake disc 6.
  • the freewheel device 12 here allows blocking either in any of the possible directions of rotation.
  • the rotors 17 and 18 each have an associated spring chamber 24 or 25.
  • the spring spaces 24 and 25 are each designed to be open to the outside of the brake device 1, that is to say to the side pointing away from the brake disc 6, and are closed in the illustrated embodiment by means of a releasable cover 26 and 27, respectively.
  • the lids 26 and 27 have central recesses 28 and 29 through which the bearing areas 3 and 4 of the axis 5 can pass.
  • L-shaped spring retainer plates 30 and 30 'and a spring receptacle 31 and 32, respectively, are provided in the spring areas 24 and 25 in the central area in the example.
  • This arrangement makes it possible to provide spring force stores, preferably in the form of spiral springs, in the spring chambers 24 and 25, which can preload the rotors 17 and 18 into an initial position.
  • the covers 26 and 27 can be fastened to the rotors 17, 18 by suitable fastening devices, such as screw connections, for which purpose corresponding thread recesses can be provided, which are indicated in the drawing.
  • suitable fastening devices such as screw connections, for which purpose corresponding thread recesses can be provided, which are indicated in the drawing.
  • the bearing bushes 13, 14 are preferably designed as hexagon bushings.
  • the sockets 19, 20 and 21 are preferably designed as DU sockets.
  • the braking device 1 according to the invention is arranged, for example, on a fitness device which is provided with handles which are connected to the rotors 17 and 18 by means of cables, the rotors 17 and 18 can be rotated by pulling the cables. As a result, the rotary movement is transmitted to the brake disc 6, which in turn generates a braking resistor by means of the tensioned brake band 10.
  • This braking resistance represents the exercise resistance that must be overcome by the exercising person in order to achieve the respective training effect.
  • the braking device according to the invention has the advantage that the movement of a single rotor 17 or 18 sets the brake disc 6 in rotation independently of the other, without the other rotatable parts of the arrangement must be rotated. This enables a very sensitive adjustment of the braking or training resistance to be overcome.
  • the braking device 1 is characterized by a simple and inexpensive construction. It is versatile and can therefore be used with a variety of different devices.
  • the spring force accumulator (not shown in the figure) can be designed in different ways, but the design as a spiral spring represents a particularly inexpensive and simple design.
  • the provision of such spring force accumulators makes it possible to preload the rotors into an initial position in which, when the fitness device is used, the handles are returned, for example, to their initial position by the preloaded rotors 17 and 18, from which the person practicing can perform their exercises.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention relates to a brake device (1) for training apparatus, having a rotatably mounted brake disc (6) and a brake belt (10) which passes around the brake disc (6) and which, by means of its tension, generates a braking resistance at the brake disc (6). In order to simplify the structure of such a brake device and to permit versatility in use, at least two rotors (17, 18) are provided which are mounted to be rotatable independently of one another and whose rotary movement can be transmitted to the brake disc (6). <IMAGE>

Description

Die Erfindung betrifft eine Bremsvorrichtung für Trainingsgeräte bzw. Körperübungsgeräte nach dem Oberbegriff des Anspruches 1.The invention relates to a braking device for training devices or physical exercise devices according to the preamble of claim 1.

Eine derartige Bremsvorrichtung ist aus dem DE-U-9010480 bekannt. Bei der in dieser Druckschrift beschriebenen Bremsvorrichtung handelt es sich um eine Schwungscheibe, die auf dem größten Teil ihres radialen Umfanges von einem endlosen Reib- bzw. Bremsband umschlungen ist. Ferner ist eine spannende Umlenkrolle vorgesehen, über die variable Spannungen auf das Bremsband und mithin auf die als Bremsscheibe wirkende Schwungscheibe aufgebracht werden können.Such a braking device is known from DE-U-9010480. The braking device described in this document is a flywheel which is wrapped by an endless friction or braking band over the largest part of its radial circumference. Furthermore, an exciting deflection roller is provided, by means of which variable tensions can be applied to the brake band and therefore to the flywheel acting as a brake disc.

Das Bremsband der gattungsgemäßen Bremsvorrichtung ist mit einer Verschiebestange mechanisch verbunden, die mit einem elektrischen Potentiometer zusammenwirkt, dessen elektrische Spannungsänderung auf einer Anzeigeeinrichtung sichtbar ist.The brake band of the generic brake device is mechanically connected to a slide rod which interacts with an electrical potentiometer, the electrical voltage change of which is visible on a display device.

Aufgrund dieser Konstruktion ist die gattungsgemäße Bremsvorrichtung nur für den speziellen Zweck geeignet, mit einer Meßeinrichtung zusammenzuwirken, die als Leistungsmeßgerät dient.Because of this construction, the generic brake device is only suitable for the special purpose of interacting with a measuring device which serves as a power meter.

Es ist demgegenüber Aufgabe der vorliegenden Erfindung, eine Bremsvorrichtung der im Oberbegriff des Anspruches 1 angegebenen Art zu schaffen, die einfach aufgebaut und vielseitig anwendbar ist.In contrast, it is an object of the present invention to provide a braking device of the type specified in the preamble of claim 1, which is simple in construction and can be used in many ways.

Die Lösung dieser Aufgabe erfolgt durch die Merkmale des Anspruches 1.This object is achieved by the features of claim 1.

In der einfachsten Ausgestaltung der Erfindung ist die Bremsvorrichtung mit zwei Rotoren versehen, die jeweils unabhängig voneinander in Drehung versetzt werden können. Hierbei wird die Drehung eines jeden Rotors auf die Bremsscheibe übertragen, die aufgrund des mit ihr zusammenwirkenden Bremsbandes den jeweiligen von der Spannung des Bremsbandes abhängenden Bremswiderstand ausübt. Die Anordnung der erfindungsgemäßen Bremsvorrichtung ist so getroffen, daß somit die Drehung eines Rotors ausreicht, die Bremsscheibe in eine durch das Bremsband gebremste Bewegung zu versetzen, ohne daß dadurch der andere Rotor mitgedreht wird. Andererseits ist es bei der erfindungsgemäßen Bremsvorrichtung auch möglich, gleichzeitig beide Rotoren zu drehen, die dann gemeinsam ihre Drehbewegung auf die Bremsscheibe übertragen.In the simplest embodiment of the invention, the braking device is provided with two rotors, which can each be set to rotate independently of one another. In this case, the rotation of each rotor is transmitted to the brake disc, which, owing to the brake band interacting with it, exerts the respective braking resistor which is dependent on the tension of the brake band. The arrangement of the braking device according to the invention is such that the rotation of one rotor is sufficient to set the brake disc in a movement braked by the brake band without the other rotor being rotated as a result. On the other hand, it is also possible with the braking device according to the invention to simultaneously turn both rotors, which then jointly transmit their rotary movement to the brake disc.

Diese Ausgestaltung der erfindungsgemäßen Bremsvorrichtung ergibt den Vorteil, daß eine Vielzahl von Anwendungsmöglichkeiten denkbar sind. So ist es beispielsweise möglich, die Bremsvorrichtung bei einem Körperübungsgerät zu verwenden, das zum Beispiel zur Stärkung der Armmuskulatur mit Handhaben versehen ist, die über geeignete Übertragungsvorrichtungen, beispielsweise Seilzüge, die Rotoren in Drehung versetzen, wenn die übende Person die Handhaben betätigt. Das Vorsehen des in seiner Spannung veränderbaren Bremsbandes ergibt hierbei die Möglichkeit, einen Übungswiderstand einzustellen, der je nach Trainingszustand größer oder kleiner sein kann.This embodiment of the braking device according to the invention has the advantage that a multitude of possible uses are conceivable. For example, it is possible to use the braking device in a physical exercise device which, for example, is provided with handles for strengthening the arm muscles, which, by means of suitable transmission devices, for example cable pulls, set the rotors in rotation when the exercising person actuates the handles. The provision of the brake band, which can be changed in its tension, results in the possibility of setting an exercise resistance, which can be larger or smaller depending on the training state.

Die Ausbildung der erfindungsgemäßen Bremsvorrichtung ermöglicht jedoch auch eine Vielzahl anderer Anwendungsmöglichkeiten, bei denen es erforderlich ist, einstellbare Widerstände durch die Drehung der Rotoren zu überwinden, die auf unterschiedliche Art und Weise hierzu von dem jeweiligen Gerät angetrieben werden können, an dem die Bremsvorrichtung angeordnet ist.However, the design of the braking device according to the invention also enables a large number of other possible applications in which it is necessary to overcome adjustable resistances by rotating the rotors, which differ from the respective one in different ways Device can be driven on which the braking device is arranged.

Die Unteransprüche haben vorteilhafte Weiterbildungen der Erfindung zum Inhalt.The dependent claims contain advantageous developments of the invention.

Zur Lagerung der Bremsscheibe und der Rotoren ist es gemäß einer besonders bevorzugten Ausführungsform möglich, eine gemeinsame ortsfeste bzw. gerätefeste Achse in Form eines Zapfens vorzusehen, der in seinen Endbereichen fixiert wird, während er beispielsweise in seinem Mittelbereich die Bremsscheibe und, vorzugsweise zu deren beiden Seiten, die Rotoren lagert.In order to mount the brake disc and the rotors, it is possible, according to a particularly preferred embodiment, to provide a common stationary or device-fixed axis in the form of a pin which is fixed in its end regions while, for example, the brake disc and, preferably to both, in its central region Sides bearing rotors.

Um eine unabhängige Drehung der Rotoren möglich zu machen, sind diese bei einer weiteren bevorzugten Ausführungsform jeweils auf einer dem jeweiligen Rotor zugeordneten Lagerbuchse befestigt. Die Lagerbuchsen wiederum sind auf der Achse drehbeweglich angeordnet, wozu es eine Vielzahl von Lagerungsmöglichkeiten gibt. Jegliche Art von Gleit- oder Wälzlagern sind grundsätzlich möglich, um die Lagerbuchse für die Rotoren auf der Achse drehbeweglich anzuordnen. Durch diese Art der Anordnung wird sichergestellt, daß sich die Rotoren relativ zueinander drehen können, wobei im Extremfalle nur einer der Rotoren gedreht wird, während der andere zumindest im wesentlichen stillsteht.In order to make an independent rotation of the rotors possible, in a further preferred embodiment they are each fastened on a bearing bush assigned to the respective rotor. The bearing bushes are rotatably arranged on the axis, for which there are a variety of storage options. Any type of plain or roller bearings are fundamentally possible in order to arrange the bearing bush for the rotors on the axis so that they can rotate. This type of arrangement ensures that the rotors can rotate relative to one another, in extreme cases only one of the rotors being rotated while the other is at least essentially stationary.

Die Bremsscheibe wird bei einer besonders bevorzugten Ausführungsform mittels einer Freilaufeinrichtung, vorzugsweise eines Hülsenfreilaufs, auf der Achse gelagert. Hierbei ist die Freilaufeinrichtung derart angeordnet, daß sie die beiden Lagerbuchsen der Rotoren übergreift. Somit wird sichergestellt, daß auch bei Drehung nur eines der Rotoren die Bremsscheibe mitgedreht wird, während der andere Rotor stillsteht.In a particularly preferred embodiment, the brake disc is mounted on the axle by means of a freewheel device, preferably a sleeve freewheel. Here, the freewheel device is arranged such that it overlaps the two bearing bushes of the rotors. This ensures that even if only one of the rotors rotates, the brake disc is also rotated while the other rotor is stationary.

Bei einer weiteren bevorzugten Ausführungsform ist es möglich, die Rotoren in eine Ausgangsstellung vorzubelasten, wozu vorzugsweise Federkraftspeicher vorgesehen sein können. Die Federkraftspeicher sind bei einer besonders vorteilhaften Ausführungsform als Spiralfedern ausgebildet. Diese können in Federräumen der Rotoren angeordnet sein, die jeweils auf einer von außen zugänglichen Seite der Bremsvorrichtung angeordnet sind. Um ein Auswechseln eventuell defekter Federkraftspeicher möglich zu machen, sind die Federräume vorzugsweise mittels lösbarer Deckel verschlossen.In a further preferred embodiment, it is possible to preload the rotors into an initial position, for which purpose spring energy stores can preferably be provided. In a particularly advantageous embodiment, the spring force accumulators are designed as spiral springs. These can be arranged in the spring chambers of the rotors, which are each arranged on an externally accessible side of the braking device. In order to make it possible to replace possibly defective spring energy stores, the spring spaces are preferably closed by means of a removable cover.

Bei einer besonders vorteilhaften Ausführungsform sind die Rotoren als Seilscheiben ausgebildet. Die Seilscheiben weisen umfangsseitige Seilführungsnuten auf, in die Seilzüge eingreifen, die beispielsweise mittels Handhaben betätigt werden können, die an dem Gerät vorgesehen sind, an dem die erfindungsgemäße Bremsvorrichtung zum Einsatz kommt.In a particularly advantageous embodiment, the rotors are designed as rope pulleys. The cable pulleys have circumferential cable guide grooves which are engaged by cables which can be operated, for example, by means of handles which are provided on the device on which the braking device according to the invention is used.

Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus nachfolgender Beschreibung eines Ausführungsbeispieles an Hand der Zeichnung.Further details, features and advantages of the invention result from the following description of an embodiment with reference to the drawing.

Die einzige Figur der Zeichnung zeigt eine Schnittdarstellung einer erfindungsgemäßen Bremsvorrichtung 1. Die Bremsvorrichtung 1 ist insbesondere für Trainings- bzw. Körperübungsgeräte geeignet, kann jedoch auch bei einer Vielzahl anderer Geräte verwendet werden.The only figure in the drawing shows a sectional view of a braking device 1 according to the invention. The braking device 1 is particularly suitable for training or physical exercise devices, but can also be used with a large number of other devices.

Die Figur verdeutlicht, daß die Bremsvorrichtung 1 im Beispielsfalle symmetrisch ausgebildet ist und eine zentrale fest stehende Achse 2 aufweist. Die Achse 2 weist an ihren Enden Lagerabschnitte 3 und 4 auf, mittels der sie an einem Gerät ortsfest fixiert werden kann. Zwischen den Lagerabschnitten 3 und 4 ist ein Mittelabschnitt 5 vorgesehen, der in seinem Durchmesser größer ist als die Lagerabschnitte 3 und 4.The figure shows that the braking device 1 is symmetrical in the example and has a central fixed axis 2. The axis 2 has bearing sections 3 and 4 at its ends, by means of which it can be fixed in place on a device. Between the bearing sections 3 and 4, a middle section 5 is provided which is larger in diameter than the bearing sections 3 and 4.

Wie die Figur verdeutlicht, ist um den Mittelabschnitt 5 der Achse 2 eine Bremsscheibe 6 angeordnet. Die Bremsscheibe 6 besteht im Beispielsfalle aus zwei Halbschalen 7 und 8, die zur Bildung einer einheitlichen Bremsscheibe 6 fest miteinander verbunden sind.As the figure shows, a brake disk 6 is arranged around the central section 5 of the axis 2. The brake disc 6 consists in the example of two half-shells 7 and 8, which are firmly connected to form a uniform brake disc 6.

Die Bremsscheibe 6 weist eine muldenförmige Umfangsfläche 9 auf, in der ein Bremsband 10 liegt. Das Bremsband 10 umschlingt die Bremsscheibe 6 zumindestens teilweise und ist in seiner Spannung mittels einer in der Figur nicht näher dargestellten Einstelleinrichtung einstellbar. Durch die variable Spannung des Bremsbandes 10 kann ein variabler Bremswiderstand an der Bremsscheibe 6 eingestellt werden.The brake disc 6 has a trough-shaped peripheral surface 9, in which a brake band 10 lies. The brake band 10 wraps around the brake disc 6 at least partially and its tension can be adjusted by means of an adjusting device, not shown in the figure. A variable braking resistor on the brake disk 6 can be set by the variable tension of the brake band 10.

Die Bremsscheibe 6 ist bei der in der Figur dargestellten besonders bevorzugten Ausführungsform auf einem Lagerrohr 11 fixiert. Das Lagerrohr 11 ist mittels einer Freilaufeinrichtung 12 auf zwei Lagerbuchsen 13 und 14 angeordnet. Die Freilaufeinrichtung 12 ist vorzugsweise als Hülsenfreilauf entsprechend dem Typ HFL 2530 ausgebildet.The brake disc 6 is fixed in the particularly preferred embodiment shown in the figure on a bearing tube 11. The bearing tube 11 is arranged on two bearing bushes 13 and 14 by means of a freewheel device 12. The freewheel device 12 is preferably designed as a sleeve freewheel according to the type HFL 2530.

Die Figur verdeutlicht, daß die Freilaufeinrichtung 12 sowie das Lagerrohr 11, das zylindrisch ausgebildet ist, die Lagerbuchsen 13 und 14, die separate Teile darstellen, überbrücken. Die Lagerbuchsen 13 und 14 wiederum weisen jeweils einen in seinem Durchmesser verminderten Lagerbereich 15 und 16 auf. Die beiden Lagerbereiche 15 und 16 nehmen die Freilaufeinrichtung 12 auf, die durch das Lagerrohr 11 innerhalb der Lagerbereiche 15 und 16 umgeben wird, wie sich dies im einzelnen aus der Darstellung der Figur erschließt.The figure shows that the freewheel device 12 and the bearing tube 11, which is cylindrical, bridge the bushings 13 and 14, which are separate parts. The bearing bushes 13 and 14 in turn each have a bearing area 15 and 16 with a reduced diameter. The two bearing areas 15 and 16 accommodate the freewheel device 12, which is surrounded by the bearing tube 11 within the bearing areas 15 and 16, as can be seen in detail from the illustration of the figure.

Die erfindungsgemäße Bremsvorrichtung 1 weist im Beispielsfalle ferner zwei Rotoren 17 und 18 auf. Die Rotoren 17 und 18 sind zu beiden Seiten der Bremsscheibe 6 auf der Achse 2 gelagert. Hierzu sind die Rotoren 17 und 18 jeweils auf den Lagerbuchsen 13 und 14 fixiert. Die Darstellung der Figur verdeutlicht, daß jede Lagerbuchse 13 bzw. 14 ausschließlich dem jeweiligen Rotor 17 bzw. 18 zugeordnet ist. Die Lagerbuchsen 13 und 14 sind endseitig mittels Buchsen 19 und 20 auf dem Mittelbereich 5 der Achse 2 drehbar gelagert. Im mittleren stirnseitigen Bereich der Lagerbuchsen 13 und 14 ist eine Bundbuchse 21 auf dem Mittelbereich 5 der Achse 2 angeordnet, die eine weitere Lagerung für die Lagerbuchsen 13 und 14 bildet, so daß die Lagerbuchsen 13 und 14 auf dem Mittelbereich 5 der Achse 2 relativ zueinander drehbeweglich angeordnet sind.The braking device 1 according to the invention also has two rotors 17 and 18 in the example. The rotors 17 and 18 are mounted on both sides of the brake disc 6 on the axis 2. For this purpose, the rotors 17 and 18 are each on the Bearing bushes 13 and 14 fixed. The illustration of the figure shows that each bearing bushing 13 or 14 is exclusively assigned to the respective rotor 17 or 18. The bearing bushes 13 and 14 are rotatably supported at the end by means of bushings 19 and 20 on the central region 5 of the axis 2. In the central end region of the bearing bushes 13 and 14, a collar bushing 21 is arranged on the central region 5 of the axis 2, which forms a further bearing for the bearing bushes 13 and 14, so that the bearing bushes 13 and 14 on the central region 5 of the axis 2 relative to each other are rotatably arranged.

Im Beispielsfalle sind die Rotoren 17 und 18 als Seilscheiben ausgebildet. Sie weisen hierzu umlaufende umfangsseitige Seilführungsnuten 22 bzw. 23 auf. In diesen Nuten 22 und 23 können in der Zeichnung nicht näher dargestellte Seilzüge einer Betätigungseinrichtung zur Drehung der Rotoren 17 und 18 eingreifen.In the example, the rotors 17 and 18 are designed as rope pulleys. For this purpose, they have circumferential, circumferential cable guide grooves 22 and 23. In these grooves 22 and 23, cables, not shown in the drawing, of an actuating device for rotating the rotors 17 and 18 can engage.

Durch die zuvor beschriebene Anordnung wird es möglich gemacht, jeden der Rotoren 17, 18 unabhängig vom jeweils anderen Rotor auf der Achse 2 zu drehen, wobei jeweils jede Drehbewegung der Rotoren 17 und 18 auf die Bremsscheibe 6 übertragbar ist. Die Freilaufeinrichtung 12 erlaubt hierbei eine Sperrung wahlweise in jede der möglichen Drehrichtungen.The arrangement described above makes it possible to rotate each of the rotors 17, 18 independently of the other rotor on the axis 2, each rotary movement of the rotors 17 and 18 being transferable to the brake disc 6. The freewheel device 12 here allows blocking either in any of the possible directions of rotation.

Um die Rotoren 17 und 18 in eine Ausgangsstellung vorbelasten zu können, weisen die Rotoren 17 und 18 jeweils einen zugeordneten Federraum 24 bzw. 25 auf. Die Federräume 24 und 25 sind jeweils zur Außenseite der Bremsvorrichtung 1, also zu der von der Bremsscheibe 6 wegweisenden Seite offen ausgebildet und bei der dargestellten Ausführungsform mittels eines lösbaren Deckels 26 bzw. 27 verschlossen. Die Deckel 26 und 27 weisen mittige Ausnehmungen 28 bzw. 29 auf, durch die die Lagerbereiche 3 bzw. 4 der Achse 5 hindurch verlaufen können.In order to be able to preload the rotors 17 and 18 into a starting position, the rotors 17 and 18 each have an associated spring chamber 24 or 25. The spring spaces 24 and 25 are each designed to be open to the outside of the brake device 1, that is to say to the side pointing away from the brake disc 6, and are closed in the illustrated embodiment by means of a releasable cover 26 and 27, respectively. The lids 26 and 27 have central recesses 28 and 29 through which the bearing areas 3 and 4 of the axis 5 can pass.

Ferner sind in den Federräumen 24 und 25 im mittleren Bereich im Beispielsfalle L-förmige Federhalterbleche 30 bzw. 30' sowie eine im mittleren Bereich liegende Federaufnahme 31 bzw. 32 vorgesehen. Durch diese Anordnung ist es möglich, in den Federräumen 24 und 25 Federkraftspeicher, vorzugsweise in Form von Spiralfedern vorzusehen, die die Rotoren 17 und 18 in eine Ausgangsstellung vorbelasten können.Furthermore, L-shaped spring retainer plates 30 and 30 'and a spring receptacle 31 and 32, respectively, are provided in the spring areas 24 and 25 in the central area in the example. This arrangement makes it possible to provide spring force stores, preferably in the form of spiral springs, in the spring chambers 24 and 25, which can preload the rotors 17 and 18 into an initial position.

Die Deckel 26 und 27 können durch geeignete Befestigungseinrichtungen, wie beispielsweise Verschraubungen an den Rotoren 17, 18 befestigt werden, wozu entsprechende Gewindeausnehmungen vorgesehen sein können, die in der Zeichnung angedeutet sind. Die Lagerbuchsen 13, 14 sind bei der dargestellten Ausführungsform vorzugsweise als Sechskantbuchsen ausgebildet. Die Buchsen 19, 20 und 21 sind vorzugsweise als DU-Buchsen ausgebildet.The covers 26 and 27 can be fastened to the rotors 17, 18 by suitable fastening devices, such as screw connections, for which purpose corresponding thread recesses can be provided, which are indicated in the drawing. In the embodiment shown, the bearing bushes 13, 14 are preferably designed as hexagon bushings. The sockets 19, 20 and 21 are preferably designed as DU sockets.

Ist die erfindungsgemäße Bremsvorrichtung 1 beispielsweise an einem Fitnessgerät angeordnet, das mit Handhaben versehen ist, die über Seilzüge mit den Rotoren 17 und 18 verbunden sind, können die Rotoren 17 und 18 durch Ziehen an den Seilzügen gedreht werden. Hierdurch wird die Drehbewegung auf die Bremsscheibe 6 übertragen, die wiederum einen Bremswiderstand mittels des gespannten Bremsbandes 10 erzeugt. Dieser Bremswiderstand stellt den Übungswiderstand dar, der von der übenden Person zur Erreichung des jeweiligen Trainingseffektes überwunden werden muß. Die erfindungsgemäße Bremsvorrichtung weist den Vorteil auf, daß auch das Bewegen eines einzelnen Rotors 17 bzw. 18 unabhängig vom jeweils anderen die Bremsscheibe 6 in Drehung versetzt, ohne daß die übrigen drehbaren Teile der Anordnung mitgedreht werden müssen. Dies ermöglicht eine sehr feinfühlige Einstellung des jeweiligen zu überwindenden Brems- bzw. Trainingswiderstandes.If the braking device 1 according to the invention is arranged, for example, on a fitness device which is provided with handles which are connected to the rotors 17 and 18 by means of cables, the rotors 17 and 18 can be rotated by pulling the cables. As a result, the rotary movement is transmitted to the brake disc 6, which in turn generates a braking resistor by means of the tensioned brake band 10. This braking resistance represents the exercise resistance that must be overcome by the exercising person in order to achieve the respective training effect. The braking device according to the invention has the advantage that the movement of a single rotor 17 or 18 sets the brake disc 6 in rotation independently of the other, without the other rotatable parts of the arrangement must be rotated. This enables a very sensitive adjustment of the braking or training resistance to be overcome.

Darüberhinaus zeichnet sich die erfindungsgemäße Bremsvorrichtung 1 durch einen einfachen und kostengünstigen Aufbau aus. Sie ist vielseitig anwendbar und demgemäß bei einer Vielzahl unterschiedlicher Geräte zu verwenden.In addition, the braking device 1 according to the invention is characterized by a simple and inexpensive construction. It is versatile and can therefore be used with a variety of different devices.

Die in der Figur nicht dargestellten Federkraftspeicher können auf unterschiedliche Art und Weise ausgebildet sein, wobei jedoch die Ausbildung als Spiralfeder eine besonders kostengünstige und einfache Ausbildung darstellt. Durch das Vorsehen derartiger Federkraftspeicher ist es möglich, die Rotoren in eine Ausgangsstellung vorzubelasten, in der beim Anwendungsfall des Fitnessgerätes die Handhaben beispielsweise in ihre Ausgangslage durch die vorgespannten Rotoren 17 und 18 zurückgestellt werden, von der aus die übende Person ihre Übungen durchführen kann.The spring force accumulator (not shown in the figure) can be designed in different ways, but the design as a spiral spring represents a particularly inexpensive and simple design. The provision of such spring force accumulators makes it possible to preload the rotors into an initial position in which, when the fitness device is used, the handles are returned, for example, to their initial position by the preloaded rotors 17 and 18, from which the person practicing can perform their exercises.

Claims (10)

Bremsvorrichtung (1) für Trainingsgeräte, - mit einer drehbar gelagerten Bremsscheibe (6); und - mit einem Bremsband (10), das die Bremsscheibe (6) umschlingt und das durch seine Spannung einen Bremswiderstand an der Bremsscheibe (6) erzeugt; dadurch gekennzeichnet - daß zumindest zwei Rotoren (17, 18) vorgesehen sind, die unabhängig voneinander drehbar gelagert sind und deren Drehbewegung auf die Bremsscheibe (6) übertragbar ist. Braking device (1) for training devices, - With a rotatably mounted brake disc (6); and - With a brake band (10) which wraps around the brake disc (6) and which generates a braking resistor on the brake disc (6) by its tension; characterized - That at least two rotors (17, 18) are provided, which are rotatably mounted independently of one another and whose rotational movement can be transmitted to the brake disc (6). Bremsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Bremsscheibe (6) und die Rotoren (17, 18) auf einer gemeinsamen ortsfesten Achse (2) gelagert sind.Braking device according to claim 1, characterized in that the brake disc (6) and the rotors (17, 18) are mounted on a common stationary axis (2). Bremsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß jeder Rotor (17, 18) auf einer separaten zugeordneten Lagerbuchse (13, 14) befestigt ist, die relativ zueinander drehbar auf der gemeinsamen Achse (2) angeordnet sind.Braking device according to claim 1 or 2, characterized in that each rotor (17, 18) is fastened on a separate associated bearing bush (13, 14) which are arranged rotatably relative to one another on the common axis (2). Bremsvorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Bremsscheibe (6) mittels einer die Lagerbuchsen (13, 14) übergreifenden Freilaufeinrichtung (12) auf der Achse (2) gelagert ist.Braking device according to claim 3, characterized in that the brake disc (6) is mounted on the axle (2) by means of a freewheel device (12) which overlaps the bearing bushes (13, 14). Bremsvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Rotoren (17, 18) mittels Federkraftspeichern in eine Ausgangsstellung vorbelastet sind.Braking device according to one of claims 1 to 4, characterized in that the rotors (17, 18) are preloaded into an initial position by means of spring energy stores. Bremsvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Federkraftspeicher als Spiralfedern ausgebildet sind.Braking device according to claim 5, characterized in that the spring force accumulators are designed as spiral springs. Bremsvorrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Federkraftspeicher in Federräumen (24 bzw. 25) der Rotoren (17 bzw. 18) angeordnet sind.Braking device according to claim 5 or 6, characterized in that the spring force accumulators are arranged in spring spaces (24 or 25) of the rotors (17 or 18). Bremsvorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Federräume (24, 25) mittels zugeordneter lösbarer Deckel (26 bzw. 27) verschließbar sind.Braking device according to claim 7, characterized in that the spring spaces (24, 25) can be closed by means of assigned detachable covers (26 or 27). Bremsvorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Rotoren (17, 18) als Seilscheiben ausgebildet sind.Braking device according to one of claims 1 to 8, characterized in that the rotors (17, 18) are designed as rope pulleys. Bremsvorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Seilscheiben jeweils eine umfangsseitig angeordnete Seilführungsnut (22, 23) aufweisen.Braking device according to claim 9, characterized in that the cable pulleys each have a cable guide groove (22, 23) arranged on the circumference.
EP93105598A 1992-04-09 1993-04-05 Brake device for training apparatus Withdrawn EP0565021A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9204967U 1992-04-09
DE9204967U DE9204967U1 (en) 1992-04-09 1992-04-09 Braking device, especially for training equipment

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EP0565021A1 true EP0565021A1 (en) 1993-10-13

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1962658A1 (en) * 1969-12-13 1971-06-24 Gerhard Hetz Sporty training device
US3764132A (en) * 1972-05-18 1973-10-09 Adrian Poppel M Friction type exercising apparatus
US4625962A (en) * 1984-10-22 1986-12-02 The Cleveland Clinic Foundation Upper body exercise apparatus
WO1991019547A1 (en) * 1990-06-13 1991-12-26 Nordictrack, Inc. Dual resistance exercise rowing machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1962658A1 (en) * 1969-12-13 1971-06-24 Gerhard Hetz Sporty training device
US3764132A (en) * 1972-05-18 1973-10-09 Adrian Poppel M Friction type exercising apparatus
US4625962A (en) * 1984-10-22 1986-12-02 The Cleveland Clinic Foundation Upper body exercise apparatus
WO1991019547A1 (en) * 1990-06-13 1991-12-26 Nordictrack, Inc. Dual resistance exercise rowing machine

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