EP0951418A2 - Manivelle de pedalier a roue libre et cyclettes ou appareils d'exercices medicaux equipes d'une telle manivelle - Google Patents

Manivelle de pedalier a roue libre et cyclettes ou appareils d'exercices medicaux equipes d'une telle manivelle

Info

Publication number
EP0951418A2
EP0951418A2 EP98904014A EP98904014A EP0951418A2 EP 0951418 A2 EP0951418 A2 EP 0951418A2 EP 98904014 A EP98904014 A EP 98904014A EP 98904014 A EP98904014 A EP 98904014A EP 0951418 A2 EP0951418 A2 EP 0951418A2
Authority
EP
European Patent Office
Prior art keywords
crank
crank arm
bottom bracket
freewheel
pedal
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.)
Ceased
Application number
EP98904014A
Other languages
German (de)
English (en)
Inventor
Steffen Heintz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0951418A2 publication Critical patent/EP0951418A2/fr
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M3/00—Construction of cranks operated by hand or foot
    • B62M3/02—Construction of cranks operated by hand or foot of adjustable length
    • 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
    • A63B21/06—User-manipulated weights
    • A63B21/0615—User-manipulated weights pivoting about a fixed horizontal fulcrum
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/40—Interfaces with the user related to strength training; Details thereof
    • A63B21/4027—Specific exercise interfaces
    • A63B21/4033—Handles, pedals, bars or platforms
    • A63B21/4034—Handles, pedals, bars or platforms for operation by feet
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/40—Interfaces with the user related to strength training; Details thereof
    • A63B21/4041—Interfaces with the user related to strength training; Details thereof characterised by the movements of the interface
    • A63B21/4049—Rotational movement
    • 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
    • A63B22/0046—Details of the support elements or their connection to the exercising apparatus, e.g. adjustment of size or orientation
    • 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

Definitions

  • the invention relates to a freewheel pedal crank according to the preamble of patent claim 1.
  • the invention further relates to a bicycle or a medical exercise device according to the preamble of patent claim 12.
  • Bicycles usually have a free wheel in the rear axle hub. This makes it possible to decouple the pedal cranks or the pedals from the rotating hub in one direction of rotation.
  • a so-called multifunctional bicycle is known from the magazine Rad mod No. 1 1/1992, p. 69, in which both pedal cranks are also freewheeled from the rear axle hub and from each other Can be decoupled, so that the pedals can be rotated completely independently of one another or can be held in the rest position.
  • the freewheel pedal crank according to the invention in particular for bicycles and medical exercise equipment, has a crank arm which is provided in the region of its first end with an actuating element in the form of a pedal or the like.
  • the term “pedal” is not restricted to an element that is actuated with the feet; rather, actuation elements that are actuated with other parts of the body, in particular with the hands, are also to be included Equipment or fitness equipment that works with any Body part are operated as long as there is a rotary or crank movement.
  • crank arm In the area of its second end, the crank arm can be fastened in a manner known per se via a freewheel to a bottom bracket shaft in such a way that when the crank is turned in a first direction, torque can be transmitted to the bottom bracket shaft and torque decoupling takes place in the opposite direction.
  • the freewheel crank has at least one weight body arranged at the second end of the crank arm, which is shaped, dimensioned and positioned in such a way that, when the actuating element is relieved, the crank arm is automatically pivoted into a rest position, in which the crank arm essentially moves upward from the bottom bracket, related to the direction of the weight.
  • the weight body is arranged substantially diametrically opposite the actuating element with respect to the bottom bracket axis.
  • a simple design of a freewheeling pedal curve according to the invention can be achieved in that the moment from the mass of the weight body x the distance of the center of mass of the weight body from the bottom bracket axis is selected at least slightly larger than the moment from the mass of the section of the Crank arm that carries the actuator, x the distance of this center of mass from the bottom bracket axis. This is due to the mass of the weight and the distance of its center of mass from the bottom bracket axis determines the restoring torque.
  • the center of mass of the weight body and the center of mass of the crank arm section with the actuating element lie diametrically opposite one another with respect to the bottom bracket axis. This results in a swivel or return angle of exactly 180 °. However, this results in an unstable dead center at the lowest pedal position, at which there is theoretically no automatic pivoting back.
  • the center of gravity of the weight body in the position of the crank arm in which the actuating element reaches its lowest position, the center of gravity of the weight body is laterally offset relative to the bottom bracket axis in such a way that the crank arm is reset due to the moment thereby acting. At the same time, this configuration results in an upper rest position of the actuating element, which is offset to the front in the direction of pedaling, as a result of which movement is initiated favorably.
  • the weight body can be changed in its position, in particular in its lateral offset.
  • the pivoting back angle of the crank arm and thus the stroke of the actuating element can be adjusted in a simple manner according to the respective requirements.
  • a disadvantage of a fixed weight body is that due to the leverage ratio it must have a relatively large mass. This can be in the range between one and two kilograms.
  • the weight body on the crank arm is arranged at least slightly movable in a radial plane of the bottom bracket axis.
  • the lateral offset can be dynamically, i.e. during the crank movement, so that there is a high restoring moment at the beginning of the swinging back movement of the crank arm, which in the
  • the freewheeling crank of the invention has an essentially closed housing-like box arranged in the region of the second end of the crank arm. in which at least one weight body is movably arranged at least in a radial plane of the bottom bracket axis. The weight body is guided essentially through the inner walls of the box
  • the weight bodies can consist, for example, of sand-like spatial elements. However, in order to achieve a sufficient restoring moment in the smallest design, the weight bodies consist of lead balls according to a further exemplary embodiment
  • the housing-like box can be at least partially filled with a liquid.
  • This liquid can itself represent the weight body or a part thereof.
  • This liquid is preferably a vaporization liquid, in particular an oil-like vaporization liquid to avoid operating noise and discontinuous restoring torque changes
  • the position of the actuating elements with respect to the longitudinal axis of the crank arm can be changed.
  • the necessary restoring torque can be influenced and, on the other hand, there is a possibility of adapting to the most varied of user requirements
  • the invention further relates to a bicycle or medical exercise device with two pedal cranks which are opposite one another on both sides of the bicycle or exercise device and connected via a bottom bracket shaft, at least one of the pedal cranks being designed as a freewheeling crank according to one of the preceding claims.
  • both pedal cranks are preferably designed as freewheeling cranks according to one of the preceding claims.
  • both conventional actuation in the manner of a circular bicycle drive and a pendulum stroke drive are possible in a simple manner.
  • both cranks can be operated completely independently of one another.
  • FIG. 1 shows a schematic illustration in a side view of a first exemplary embodiment of a freewheeling crank according to the invention
  • FIG. 2 shows the freewheeling crank according to FIG. 1 in a partially broken view from above;
  • FIG. 3 in a view corresponding to FIG. 2
  • FIG. 4 shows a second embodiment of a freewheeling crank according to the invention with a movable weight body in a perspective view
  • FIG. 5 shows the weight body of the exemplary embodiment according to FIG. 4 likewise in a perspective view
  • FIG. 6 in a schematic partially broken lateral
  • FIG. 7 shows the embodiment of FIG. 6 in a partially broken view from above.
  • the freewheeling crank 1 shown in FIGS. 1 and 2 has a crank arm 2, at the first end 3 of which an actuating element 4 in the form of a rotatably fastened pedal is arranged.
  • the crank arm 2 is attached to the bottom bracket 6 of a bicycle, not shown, via a freewheel 7 such that when the crank is turned in the direction of arrow F, torque is transmitted to the bottom bracket 6, while in the opposite direction, torque is decoupled and so that there is a freewheel.
  • the freewheel 7 is arranged in a corresponding recess 8 of the crank arm 2 and is connected with its inner ring 9 in a rotationally fixed manner to the bottom bracket shaft 6.
  • a weight body 10 is arranged on the crank arm 2 and fastened there by means of two Allen screws 11 and 12. The weight body 10 together with the areas of the
  • Crank arm 2 which are to the right of the vertical line 13 in the illustration according to FIG. 1, has a center of gravity 14 which is offset laterally by the distance S in relation to the vertical axis 15 in the central position shown in FIG. 1.
  • This creates a restoring moment around the bottom bracket axis in the direction of arrow G.
  • a weight moment acts around the bottom bracket axis in the direction of arrow F due to the weight of the crank arm 2 and the actuating element 4.
  • the filing crank is automatically returned to the upper rest position the weight of the weight body must be selected and positioned in such a way that the restoring torque is at least slightly greater than the weight torque.
  • the actuating element is in the stable upper rest position in a position which is offset in the direction of arrow F in relation to the vertical.
  • the position of the weight body 10 and thus the offset S or T can be set by means of the Allen screws 11 and 12. This is a simple Before setting possible both for the amount of the restoring torque and for the upper rest position of the actuating element 4.
  • Fig. 3 the bottom bracket area 16 of a bicycle with two freewheel cranks 1 is shown schematically in the pendulum stroke position. Two substantially identical freewheel cranks 1 are arranged opposite one another on both sides of the bicycle.
  • FIG. 4 shows a schematic perspective illustration of a freewheel pedal crank 101 with a crank arm 102, on the first end 103 of which an actuating element (not shown) is arranged.
  • a recess 108 which serves to receive a freewheel (not shown) and to fasten it to a bottom bracket shaft (also not shown).
  • a weight body 110 is movably fastened to the crank arm 102.
  • the weight body 110 has a guide pin 117, which is on the concave inner surface 118 of the weight body 1 10 is arranged and engages in a corresponding guide groove 1 19 in the crank arm 102 like a handle.
  • the inner surface 118 is complementary to the outer surface 120 of the second end 105 of the crank arm 102.
  • the two surfaces 118 and 120 are designed as sliding surfaces.
  • the weight body 110 causes the stops 121 to stop Initiation of a relatively large initial restoring torque, which leads to a rapid dynamic return of the crank to the upper rest position.
  • elastomer elements can be used for damping in the area of the stops.
  • a housing-like box 222 is fastened in the region of the second end 205 of the crank arm 202, in which a plurality of weight bodies 210 in the form of lead balls are arranged in the manner of a bed. Otherwise, the interior of the box 222 is filled with an oil-like damping fluid.
  • the crank arm is pivoted into the lowest position in the direction of arrow F
  • the weight bodies 210 are displaced into the position shown in FIG. 6 due to the inertia of the weight bodies 210 , whereby the center of gravity, based on the bottom bracket axis, moves outwards and a maximum restoring torque is generated.
  • the weight bodies 210 With increasing return to the upper rest position, the weight bodies 210 are shifted in the opposite direction of the arrow X and thus the restoring torque is dynamically reduced to the point of compensation with the weight moment acting through the crank arm and pedal.
  • crank arm 202 has an engagement groove-like fastening groove 223 in which the actuating element 204 can be displaced in the direction of the longitudinal axis of the crank arm.
  • the weight moment can be varied by changing the center of mass and the entire device can be adapted to the most varied of user requirements.

Landscapes

  • 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)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Vascular Medicine (AREA)
  • Cardiology (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Rehabilitation Tools (AREA)
  • Transmission Devices (AREA)
  • Mechanical Control Devices (AREA)

Abstract

L'invention concerne une manivelle de pédalier à roue libre, en particulier pour cyclettes et appareils d'exercices médicaux, comprenant un bras de manivelle présentant un élément d'actionnement, sous forme d'une pédale ou analogue, dans la zone de sa première extrémité et qui, dans la zone de sa deuxième extrémité, peut être fixé, par l'intermédiaire d'une roue libre, à un arbre du palier de pédalier, de telle façon que par rotation de la manivelle dans une premier sens de rotation, un couple de rotation puisse être transmis à l'arbre du palier de pédalier et qu'un accouplement à couple de rotation se forme lors de la rotation en sens contraire. L'invention est caractérisée en ce qu'il est prévu au moins un poids, monté à la deuxième extrémité du bras de manivelle et qui est formé, dimensionné et positionné de telle façon que, par dégagement de l'élément d'actionnement, il se produise un pivotement automatique du bras de manivelle vers une position de repos, dans laquelle le bras de manivelle se déplace sensiblement vers le haut, à partir du palier du pédalier, par rapport à la direction de la force due au poids. L'invention concerne en outre une cyclette ou un appareil d'exercice médical ainsi équipé.
EP98904014A 1997-01-08 1998-01-08 Manivelle de pedalier a roue libre et cyclettes ou appareils d'exercices medicaux equipes d'une telle manivelle Ceased EP0951418A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19700298 1997-01-08
DE19700298 1997-01-08
PCT/DE1998/000045 WO1998030434A2 (fr) 1997-01-08 1998-01-08 Manivelle de pedalier a roue libre et cyclettes ou appareils d'exercices medicaux equipes d'une telle manivelle

Publications (1)

Publication Number Publication Date
EP0951418A2 true EP0951418A2 (fr) 1999-10-27

Family

ID=7816914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98904014A Ceased EP0951418A2 (fr) 1997-01-08 1998-01-08 Manivelle de pedalier a roue libre et cyclettes ou appareils d'exercices medicaux equipes d'une telle manivelle

Country Status (4)

Country Link
EP (1) EP0951418A2 (fr)
AU (1) AU6204898A (fr)
DE (2) DE19800360A1 (fr)
WO (1) WO1998030434A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SI9800092A (sl) * 1998-03-26 1999-12-31 Peter Zupan Gonilni mehanizem za poganjanje dvokolesa z eno nogo
DE102008050463B3 (de) * 2008-10-08 2010-01-21 Icg-Indoorcycling Group Gmbh Übungsgerät zur körperlichen Ertüchtigung
DE102022001105A1 (de) 2022-03-31 2023-10-05 Siegfried Hinzmann Anordnung und Verfahren zur Fahrradbeschleunigung mit Innovativen Pedalen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT76338B (de) * 1915-05-19 1919-05-10 Josef Weisz Fahrradtretkurbelantrieb zur Ermöglichung des Fahrens von Einbeinigen und anderen, im Gebrauch ihres zweiten Beines behinderten Personen auf Normalzweirädern.
AT178803B (de) * 1954-01-29 1954-06-25 Georg Hobel Tretantrieb für Fahrräder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9830434A3 *

Also Published As

Publication number Publication date
DE19800360A1 (de) 1998-09-03
WO1998030434A2 (fr) 1998-07-16
DE19880014D2 (de) 2000-01-27
WO1998030434A3 (fr) 1998-11-05
AU6204898A (en) 1998-08-03

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