EP0439557B1 - Sports and therapeutic device - Google Patents

Sports and therapeutic device Download PDF

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Publication number
EP0439557B1
EP0439557B1 EP90904763A EP90904763A EP0439557B1 EP 0439557 B1 EP0439557 B1 EP 0439557B1 EP 90904763 A EP90904763 A EP 90904763A EP 90904763 A EP90904763 A EP 90904763A EP 0439557 B1 EP0439557 B1 EP 0439557B1
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EP
European Patent Office
Prior art keywords
frame part
lower frame
shaft
bearing
drive wheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90904763A
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German (de)
French (fr)
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EP0439557A1 (en
Inventor
Hans Günter Dipl.-Ing. Bals
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BALS HANS G DIPL ING
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BALS HANS G DIPL ING
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Publication of EP0439557A1 publication Critical patent/EP0439557A1/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
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/02—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using resilient force-resisters
    • A63B21/026—Bars; Tubes; Leaf springs
    • A63B21/027—Apparatus forced to oscillate at its resonant frequency
    • 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
    • A63B22/0605—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 a circular movement, e.g. ergometers
    • 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
    • A63B21/005—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters
    • A63B21/0053—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters using alternators or dynamos
    • 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

  • the invention relates to a therapy and sports device with a frame consisting of four articulated parts, of which the lower frame part is movably mounted on a tripod via a joint arranged between its front and rear ends and the front frame part, the upper frame part a seat and the front frame part carries handles, footrests are attached to the lower frame part and the movement of a frame part relative to another frame part or the tripod can be transmitted via a connecting rod and a crank to a non-rotatably connected drive wheel which transmits a flywheel drives.
  • the known devices of this type have so far the disadvantage that the two phases of unfolding and folding the four-bar frame lead to different angles of rotation of the drive wheel and, as a result, also to different, physiologically unfavorable accelerations of the seat, handles and footrests.
  • the different angles of rotation of the drive wheel in the two movement phases result from the fact that the pivoting movement of the lower frame part results in a relative movement of the crankshaft bearing with respect to the fixed connecting rod bearing.
  • the lower frame part consists, for example, of two spaced-apart parallel support spars, between which a crankshaft connected to the drive wheel in a rotationally fixed manner is rotatably mounted, and in that a connecting rod on the one hand on an offset of the crankshaft, on the other hand on the tripod or is mounted near the point at which the angular sizes between the two extreme positions of the lower frame part and between the two dead center positions of the connecting rod are the same.
  • the phases of movement of the crankshaft with the drive wheel as well as the speeds and accelerations of the seat, the handles and the footrests, based on the movement of the individual element in both phases of movement - apart from the reversal of the direction of movement - are the same size or approximate to one another that a harmonious sequence of movements is guaranteed.
  • the lower frame part 14 carries the transmission, which from the crankshaft 46 with the rotationally fixed drive wheel 48 and the crankshaft bearing 44 and the connecting rod bearing 68 and from the transmission 52 as a transmission stage, the flywheel 60 and the generator 64, further from the connecting rod 70 with the stationary camp 72 exists.
  • the distance between the fixed connecting rod bearing 72 and the straight line between the pivot bearing 30 and the articulated axis 24 and between the pivot bearing 30 and the fixed connecting rod bearing 72 is approximately the same as the distance between the crankshaft bearing 44 and the straight line between the pivot bearing 30 and the articulated axis 24 and corresponds to the solution of the invention.
  • the distance X of the fixed connecting rod bearing 72 from the straight line which runs through the axes of the pivot bearing 30 and the joint 24 is approximately as large as the distance Y of the axis of the pivot bearing 30 from the axis of the connecting rod bearing 72 and approximately as large as the distance Z the axis of the crankshaft bearing 44 from the straight line that leads through the axes of the pivot bearing 30 and the joint 24.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Rehabilitation Tools (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

The present invention provides a therapeutic and sports device with a frame including four pivotably interconnected parts comprising: lower, upper, front and rear frame parts, the lower frame part being mounted between the front frame part and the rear frame part by first and second joint respectively; a stand to which supports the lower and front frame parts at a rotation bearing and third joint respectively; a saddle carried on the upper frame part; pedals attached to the lower frame part; a drive wheel for driving a flywheel, the drive wheel being pivotably mounted to the lower frame part; a crankshaft which is immovably connected to the drive wheel at a crankshaft bearing; and a connecting rod connected to the crankshaft at a crankshaft connecting rod bearing and connected to the stand at a stationary connecting rod bearing, the distance between the crankshaft bearing and a line connecting the rotation bearing and the third joint and the distance between the stationary bearing and the rotation bearing being substantially equal to the distance between the crankshaft bearing the line connecting the rotation bearing and the third joint.

Description

Die Erfindung bezieht sich auf ein Therapie- und Sportgerät mit einem aus vier gelenkig miteinander verbundenen Teilen bestehenden Rahmen, von denen der untere Rahmenteil über ein zwischen seinem vorderen und hinteren Ende angeordnetes Gelenk und der vordere Rahmenteil beweglich an einem Stativ gelagert sind, der obere Rahmenteil einen Sitz und der vordere Rahmenteil Handgriffe trägt, am unteren Rahmenteil Fußstützen angebracht sind und die Bewegung eines Rahmenteils relativ zu einem anderen Rahmenteil oder dem Stativ über ein Pleuel und eine Kurbel auf ein drehfest mit dieser verbundenes Antriebsrad übertragbar ist, welches über eine Transmission eine Schwungscheibe treibt.The invention relates to a therapy and sports device with a frame consisting of four articulated parts, of which the lower frame part is movably mounted on a tripod via a joint arranged between its front and rear ends and the front frame part, the upper frame part a seat and the front frame part carries handles, footrests are attached to the lower frame part and the movement of a frame part relative to another frame part or the tripod can be transmitted via a connecting rod and a crank to a non-rotatably connected drive wheel which transmits a flywheel drives.

Ein derartiges Gerät ist im europäischen Patent Nr. 0 000 553 und in den deutschen Patentanmeldungen P 29 32 041 und P 31 13 242 beschrieben.Such a device is described in European Patent No. 0 000 553 and in German patent applications P 29 32 041 and P 31 13 242.

Die bekannten derartigen Geräte haben bisher den Nachteil, daß die beiden Phasen des Auffaltens und Einfaltens des Viergelenkrahmens zu unterschiedlichen Drehwinkeln des Antriebsrades führen und infolge davon auch zu unterschiedlichen, physiologisch ungünstigen Beschleunigungen von Sitz, Handgriffen und Fußstützen.
Die unterschiedlichen Drehwinkel des Antriebsrades in den beiden Bewegungsphasen ergeben sich dadurch, daß aus der Schwenkbewegung des unteren Rahmenteils sich eine Relativbewegung des Kurbelwellenlagers gegenüber dem ortsfesten Pleuellager ergibt.The known devices of this type have so far the disadvantage that the two phases of unfolding and folding the four-bar frame lead to different angles of rotation of the drive wheel and, as a result, also to different, physiologically unfavorable accelerations of the seat, handles and footrests.
The different angles of rotation of the drive wheel in the two movement phases result from the fact that the pivoting movement of the lower frame part results in a relative movement of the crankshaft bearing with respect to the fixed connecting rod bearing.

Ein weiterer Nachteil der bekannten derartigen Geräte ist, daß keine konstruktive Möglichkeit gegeben ist, alle drehenden und schwenkenden zum Getriebe gehörigen Teile, namentlich Pleuel und Kurbeln, zum Schutze gegen Verletzungen der Benutzer des Gerätes in die Verkleidung des Getriebes aufzunehmen.Another disadvantage of the known devices of this type is that there is no constructive possibility to accommodate all rotating and pivoting parts belonging to the transmission, namely connecting rods and cranks, for protection against injuries to the users of the device in the casing of the transmission.

Der Erfindung liegt die Aufgabe zugrunde, ein Therapie- und Sportgerät der beschriebenen Art zu schaffen, bei dem

  • 1. eine bessere Harmonie der beiden Bewegungsphasen gegeben ist,
  • 2. ein besserer Schutz des Benutzers gegen Verletzungen möglich ist.
The invention has for its object to provide a therapy and sports device of the type described, in which
  • 1. there is better harmony between the two movement phases,
  • 2. Better protection of the user against injuries is possible.

Die Erfindungsaufgabe wird dadurch gelöst, daß der untere Rahmenteil beispielsweise aus zwei im Abstand voneinander befindlichen parallelen Tragholmen besteht, zwischen denen eine mit dem Antriebsrad drehfest verbundene Kurbelwelle drehbar gelagert ist und, daß ein Pleuel einerseits an einer Auskröpfung der Kurbelwelle, andererseits am Stativ an oder in der Nähe der Stelle gelagert ist, an der die Winkelgrößen zwischen beiden Extremstellungen des unteren Rahmenteils und zwischen den beiden Totpunktstellungen des Pleuels gleich sind.
Das ist dann gegeben, wenn der Abstand des Kurbelwellenlagers von der Verbindungsgeraden der Schwenkachse des unteren Rahmenteils und der Gelenkachse zwischen unterem und vorderem Rahmenteil annähernd gleich oder gleich groß ist wie der Abstand der am Stativ befindlichen ortsfesten Pleuellagerachse von der Schwenkachse und gleich groß ist wie der Abstand der am Stativ befindlichen Pleuellagerachse von der Verbindungsgeraden zwischen Schwenkachse und Gelenkachse zwischen unterem und vorderem Rahmenteil.The object of the invention is achieved in that the lower frame part consists, for example, of two spaced-apart parallel support spars, between which a crankshaft connected to the drive wheel in a rotationally fixed manner is rotatably mounted, and in that a connecting rod on the one hand on an offset of the crankshaft, on the other hand on the tripod or is mounted near the point at which the angular sizes between the two extreme positions of the lower frame part and between the two dead center positions of the connecting rod are the same.
This is the case if the distance between the crankshaft bearing and the straight line connecting the swivel axis of the lower frame part and the hinge axis between the lower and front frame part is approximately the same as or the same as the distance between the fixed connecting rod bearing axis on the tripod and the swivel axis and the same size as that Distance of the connecting rod bearing axis on the tripod from the straight line between the swivel axis and the joint axis between the lower and front frame part.

Dadurch werden die Bewegungsphasen der Kurbelwelle mit dem Antriebsrad sowie die Geschwindigkeiten und Beschleunigungen des Sitzes, der Handgriffe und der Fußstützen, bezogen jeweils auf die Bewegung des einzelnen Elementes in beiden Bewegungsphasen - abgesehen von der Umkehrung der Bewegungsrichtung - gleich groß oder einander so angenähert, daß ein harmonischer Bewegungsablauf gewährleistet ist.As a result, the phases of movement of the crankshaft with the drive wheel as well as the speeds and accelerations of the seat, the handles and the footrests, based on the movement of the individual element in both phases of movement - apart from the reversal of the direction of movement - are the same size or approximate to one another that a harmonious sequence of movements is guaranteed.

Diese Lösung gestattet außerdem, alle drehenden Teile und das Pleuel unter einer gemeinsamen Verkleidung gegen Berührung zu schützen.This solution also allows all rotating parts and the connecting rod to be protected against contact under a common cover.

Diese Lösung gestattet weiterhin, daß der untere Rahmenteil, der durch das Schwenkgelenk zu einem Zweiarmigen Hebel wird, je nach konstruktivem Ermessen die Kurbelwelle vor und hinter dem Schwenkgelenk tragen kann. Entsprechend hat sich lediglich die Anordnung der übrigen Getriebeelemente zu ändern.This solution also allows the lower frame part, which becomes a two-armed lever by the swivel joint, to be able to support the crankshaft in front of and behind the swivel joint, depending on the design discretion. Accordingly, only the arrangement of the other gear elements has to change.

Die Erfindung wird nachstehend anhand zweier in Zeichnungen dargestellter Ausführungsbeispiele erläutert.

Figur 1 :
Seiten ansicht eines Therapie- und Sportgeräts gemäß der Erfindung
Figur 2 :
Ein Ausführungsbeispiel

Es zeigt die Figur 1
ein Therapie- und Sport gerät gemäß der Erfindung in einer vereinfachten Seitenansicht, wobei Kurbelwelle mit Antriebsrad, Transmission, Schwungscheibe und ein Element zur Aufnahme bzw. zur Vernichtung mechanischer Arbeit, beispielsweise ein Elektrogenerator, am Unteren Rahmenteil gelagert sind.
Der Rahmen besteht aus dem oberen Rahmenteil 12, dem unteren Rahmenteil 14, dem vorderen Rahmenteil 16 und dem hinteren Rahmenteil 18. Der obere Rahmenteil 12 ist durch ein Gelenk 20 mit dem vorderen Rahmenteil 16 und durch ein Gelenk 22 mit dem hinteren Rahmenteil 18 verbunden. Der untere Rahmenteil 14 ist durch ein Gelenk 24 mit dem vorderen Rahmenteil 16 und durch ein Gelenk 26 mit dem hinteren Rahmenteil 18 verbunden.
Der gesamte Rahmen 10 wird vom Stativ 28 getragen, wobei der untere Rahmenteil 14 mittels eines Schwenklagers 30 am Stativ 28 abgestützt ist,während der vordere Rahmenteil 16 über ein Gelenk 32, das ihn mit der Stange 34 verbindet, und ein unten an der Stange 34 befindliches weiteres Gelenk 36 am Stativ abgestützt ist.
Der obere Rahmenteil trägt einen Sitz 38. Am unteren Rahmenteil 14 sind Fußstützen 40 angebracht, und der vordere Rahmenteil 16 trägt Handgriffe 42.The invention is explained below with reference to two exemplary embodiments shown in the drawings.
Figure 1:
Side view of a therapy and sports device according to the invention
Figure 2:
An embodiment

It shows FIG. 1
a therapy and sports device according to the invention in a simplified side view, crankshaft with drive wheel, transmission, flywheel and an element for receiving or for the destruction of mechanical work, for example an electric generator, are mounted on the lower frame part.
The frame consists of the upper frame part 12, the lower frame part 14, the front frame part 16 and the rear frame part 18. The upper frame part 12 is connected to the front frame part 16 by a joint 20 and to the rear frame part 18 by a joint 22. The lower frame part 14 is connected by a joint 24 to the front frame part 16 and by a joint 26 to the rear frame part 18.
The entire frame 10 is supported by the stand 28, the lower frame part 14 being supported on the stand 28 by means of a pivot bearing 30, while the front frame part 16 is supported by a joint 32 which connects it to the rod 34 and at the bottom of the rod 34 located further joint 36 is supported on the tripod.
The upper frame part carries a seat 38. Footrests 40 are attached to the lower frame part 14, and the front frame part 16 carries handles 42.

Der untere Rahmenteil 14 trägt das Getriebe, das aus der Kurbelwelle 46 mit dem drehfest verbundenen Antriebsrad 48 und dem Kurbelwellenlager 44 und dem Pleuellager 68 sowie aus der Transmission 52 als Übersetzungsstufe, dem Schwungrad 60 und dem Generator 64, weiterhin aus dem Pleuel 70 mit dem ortsfesten Lager 72 besteht.
Der Abstand des ortsfesten Pleuellagers 72 von der Verbindungsgeraden zwischen Schwenklager 30 und Gelenkachse 24 sowie zwischen Schwenklager 30 und dem ortsfesten Pleuellager 72 ist etwa gleich groß wie der Abstand des Kurbelwellenlagers 44 von der Verbindungsgeraden zwischen Schwenklager 30 und Gelenkachse 24 und entspricht der Lösung der Erfindungsaufgabe.The lower frame part 14 carries the transmission, which from the crankshaft 46 with the rotationally fixed drive wheel 48 and the crankshaft bearing 44 and the connecting rod bearing 68 and from the transmission 52 as a transmission stage, the flywheel 60 and the generator 64, further from the connecting rod 70 with the stationary camp 72 exists.
The distance between the fixed connecting rod bearing 72 and the straight line between the pivot bearing 30 and the articulated axis 24 and between the pivot bearing 30 and the fixed connecting rod bearing 72 is approximately the same as the distance between the crankshaft bearing 44 and the straight line between the pivot bearing 30 and the articulated axis 24 and corresponds to the solution of the invention.

Figur 2Figure 2

zeigt ein Ausführungsbeispiel, bei dem die beiden Extremstellungen des unteren Rahmenteils 14 zwischen sich einen Winkel α einschließen, der mit 35° gewählt wurde.
Der Abstand X des ortsfesten Pleuellagers 72 von der Geraden, die durch die Achsen des Schwenklagers 30 und des Gelenkes 24 führt, ist ungefähr so groß wie der Abstand Y der Achse des Schwenklagers 30 von der Achse des Pleuellagers 72 und ungefähr so groß wie der Abstand Z der Achse des Kurbelwellenlagers 44 von der Geraden, die durch die Achsen des Schwenklagers 30 und und des Gelenkes 24 führt.
Die beiden Totpunktstellungen des Pleuels 70 schließen nun einen Winkel β ein der entsprechend der Erfindungsaufgabe mit β = 35,8° fast gleich ist der Größe des Winkels α.shows an embodiment in which the two extreme positions of the lower frame part 14 enclose an angle α between them, which was chosen to be 35 °.
The distance X of the fixed connecting rod bearing 72 from the straight line which runs through the axes of the pivot bearing 30 and the joint 24 is approximately as large as the distance Y of the axis of the pivot bearing 30 from the axis of the connecting rod bearing 72 and approximately as large as the distance Z the axis of the crankshaft bearing 44 from the straight line that leads through the axes of the pivot bearing 30 and the joint 24.
The two dead center positions of the connecting rod 70 now enclose an angle β which, according to the invention task with β = 35.8 °, is almost the same as the size of the angle α.

Bei kleinen Unterschieden der Winkelgrößen der Winkel α und β bis zu etwa einem Unterschied von 10° bleiben die Nachteile hinsichtlich der Harmonie der Bewegungsabläufe von Sitz, Handgriffen und Fußstützen noch so gering, daß sie in Kauf genommen werden können, wenn dadurch erhebliche konstruktive oder andere Vorteile gegeben sind.With small differences in the angle sizes of the angles α and β up to approximately a difference of 10 °, the disadvantages with regard to the harmony of the movement sequences of the seat, handles and footrests remain so small that they can be accepted if this leads to significant constructive or other effects Advantages are given.

Claims (4)

  1. Therapeutic and sports device having a frame consisting of four parts connected to one another in an articulated manner, of which the lower frame part (14) is mounted on a joint disposed between its front and rear ends, and the front frame part (16) is mounted in a movable manner on a stand (28), the upper frame part (12) supports a seat (38) and the front frame part (16) supports handles (42), footrests (40) are mounted on the lower frame part (14); and the movement of one frame part relative to another frame part or to the stand can be transmitted via a piston rod (70) and a crank (46) onto a drive wheel (48) connected thereto in a manner secure against rotation, which drive wheel activates a driven plate (60), characterised in that, on the lower frame part (14), there is rotatably mounted a crank shaft (46) which is connected to the drive wheel (48) in a manner secure against rotation, and in that a piston rod (70) is mounted on the one hand on a projection of the crank shaft (46) and on the other hand on the stand (28), on or in the vicinity of the point at which the magnitude of the angles between the two end positions of the lower frame part (14) and between the two dead points of the piston rod (70) are the same, which occurs when the distance of the crank shaft mounting (44) from the straight lines connecting the pivot shaft (30) of the lower frame part (14) and the articulation shaft (24) between the upper and the lower frame part is nearly the same or is the same magnitude as the distance of the piston rod mounting shaft (72) which is located on the stand (28) in a manner secure as regards location from the pivot shaft (30), and is the same magnitude as the distance of the piston rod mounting shaft (72) located on the frame (28) from the straight line between the pivot shaft (30) and the articulated shaft (24) between the lower frame part and the front frame part.
  2. Therapeutic and sports device according to Claim 1, characterised in that the lower frame part consists of two wing spars located at a distance from one another and parallel to one another, between which the cam shaft (46), which is connected in a manner secure against rotation to the drive wheel (48), is rotatably mounted.
  3. Therapeutic and sports device according to Claim 1, characterised in that all rotating parts and the piston rods (70) are protected against touch under a common cladding.
  4. Therapeutic and sports device according to Claims 1 and 2, characterised in that the lower frame part (14) can support the cam shaft in front of or behind the pivot joint.
EP90904763A 1989-04-03 1990-03-27 Sports and therapeutic device Expired - Lifetime EP0439557B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3910704 1989-04-03
DE3910704A DE3910704C2 (en) 1989-04-03 1989-04-03 Sports and therapy device
PCT/DE1990/000246 WO1990011803A1 (en) 1989-04-03 1990-03-27 Sports and therapeutic device

Publications (2)

Publication Number Publication Date
EP0439557A1 EP0439557A1 (en) 1991-08-07
EP0439557B1 true EP0439557B1 (en) 1994-07-20

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ID=6377713

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90904763A Expired - Lifetime EP0439557B1 (en) 1989-04-03 1990-03-27 Sports and therapeutic device

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Country Link
US (1) US5156650A (en)
EP (1) EP0439557B1 (en)
AT (1) ATE108681T1 (en)
DE (1) DE3910704C2 (en)
ES (1) ES2062516T3 (en)
WO (1) WO1990011803A1 (en)

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Also Published As

Publication number Publication date
DE3910704C2 (en) 1998-04-09
WO1990011803A1 (en) 1990-10-18
ES2062516T3 (en) 1994-12-16
US5156650A (en) 1992-10-20
DE3910704A1 (en) 1990-10-04
EP0439557A1 (en) 1991-08-07
ATE108681T1 (en) 1994-08-15

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