EP2732853A1 - Crankset for aquacycling bicycle - Google Patents

Crankset for aquacycling bicycle Download PDF

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Publication number
EP2732853A1
EP2732853A1 EP13192974.7A EP13192974A EP2732853A1 EP 2732853 A1 EP2732853 A1 EP 2732853A1 EP 13192974 A EP13192974 A EP 13192974A EP 2732853 A1 EP2732853 A1 EP 2732853A1
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EP
European Patent Office
Prior art keywords
friction member
housing
hydraulic
opening
valve
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.)
Granted
Application number
EP13192974.7A
Other languages
German (de)
French (fr)
Other versions
EP2732853B1 (en
Inventor
Hermann Burel
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.)
INDUSTRIELLE RADIO ELECTRIQUE ET MECANIQUE "SIREM" Ste
Original Assignee
INDUSTRIELLE RADIO ELECTRIQUE ET MECANIQUE "SIREM" Ste
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Publication of EP2732853A1 publication Critical patent/EP2732853A1/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
    • A63B22/0605—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
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H33/00—Bathing devices for special therapeutic or hygienic purposes
    • A61H33/0087—Therapeutic baths with agitated or circulated water
    • A61H33/0091—Water agitated by means moving in the bath, i.e. without water connections to an outside pump circuit
    • 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
    • A63B21/008—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using hydraulic or pneumatic force-resisters
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/12—Driving means
    • A61H2201/1253—Driving means driven by a human being, e.g. hand driven
    • A61H2201/1261—Driving means driven by a human being, e.g. hand driven combined with active exercising of the patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/16—Physical interface with patient
    • A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
    • A61H2201/1628—Pelvis
    • A61H2201/1633—Seat
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2205/00—Devices for specific parts of the body
    • A61H2205/10—Leg
    • 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
    • A63B2022/0635—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 specially adapted for a particular use
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2208/00—Characteristics or parameters related to the user or player
    • A63B2208/03—Characteristics or parameters related to the user or player the user being in water
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2213/00—Exercising combined with therapy
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
    • A63B2225/60—Apparatus used in water

Definitions

  • the invention relates to an apparatus of the aquatic bike type, comprising a bathtub enclosing a seat and a pedal and water jets, and in which the user settles to pedal with his legs immersed and massaged by the jets d 'water.
  • Such an installation allows the user to practice physical effort without supporting the weight of his body while being massaged by the water jets.
  • It typically comprises a bathtub or tub equipped with nozzles on its inner face, surrounding a central structure carrying a pedal and a seat, these nozzles being directed towards the center of the tub to generate jets of water massaging the user's legs. .
  • the user first installs on the central structure by sitting on the seat while placing his feet on the pedals, before engaging the filling of the tub and the activation of the jets of water to start your exercise session.
  • the pedal is equipped with a braking system for the user to pedal against a resistant torque that is adjustable, in the same way as in the case of a exercise bike.
  • the components of the adjustable brake that equip the crankset deteriorate fairly quickly, because they bathe almost continuously in the water, as well as their control means.
  • FR-A-1,584,106 discloses an aquatic bike including a seat, handlebars and pedals immersed in a pool of water.
  • the pedal has a wheel that is rotated during pedaling and can be braked by a brake pad.
  • the pad is actuated by a jack to abut against the wheel of the pedal so as to cause, by friction, braking of the wheel.
  • the braking force applied by the pad on the wheel can be adjusted by the user by manipulating a lever. This mode of adjustment is not very ergonomic because the user must manipulate the lever by pedaling.
  • US-A-5,267,925 discloses a weight machine that drives pedaling. This machine is not adapted to be arranged in a basin of water since it has significant dimensions and includes an alternator.
  • the object of the invention is to provide a water bike whose braking is more easily adjusted and whose brake components wear out less quickly.
  • the subject of the invention is a braking system for aquatic cycling, comprising a fixed support intended to be secured to the frame of the water bike and a friction member carried by the fixed support being movable relative to this fixed support , this friction member being intended to bear on a rotary plate driven by the pedal to brake by exerting a pressing force on the plate, and actuating means for exerting on the friction member corresponding adjustable effort the pressure means, the actuating means comprising a hydraulic cylinder for being fed by a hydraulic circuit of the water bike, to exert the adjustable force corresponding to the pressure force.
  • the support has a box shape having an open face through which the friction member is slidably mounted, and wherein the support has an opening for connection to a hydraulic supply, for introducing water into a chamber defined by this housing and the friction member jointly forming the hydraulic cylinder.
  • the central aquatic bike structure that is represented in the figure 1 by being marked by 1 has a main foot 2 which is oriented vertically when the pedal is installed as in the figure 1 .
  • This foot 2 carries at its upper end a seat or saddle 3, and a set 4 pedaling at its lower front.
  • This assembly 4 comprises a frame made of sheet metal 6 rigidly secured to the lower portion of the foot 2, and which carries a pedal 7 on which is mounted a central plate shaped sheave 8, this pedal comprising two cranks 9 and 11 carried by an axis through and located on both sides of the sheave 8 which is mounted in a central position.
  • the frame 6 comprises two parallel sides 12 and 13 made of sheet metal, crossed by the axis of the pedal, and which are located in on either side of the sheave or plate 8.
  • the cranks are located on either side of these sheet metal flanks which carry the bearings, unmarked, supporting the axis of the crankset.
  • a braking system 14 of the pedal 7 is installed in the lower part of the frame 6, and this system comprises a housing 16 which is rigidly secured to the lower part of the frame 6, and a friction member 17 which is slidably mounted in this housing 16 Thus, the braking system 14 is disposed below the central plate 8.
  • the friction member is slidably mounted along a vertical axis coinciding with a radial axis of the pedal, so that the friction member 16 is adapted to come radially bearing on the sheave 8 to fit into the groove 18 of this sheave in order to exert a pressing force which brakes this sheave 8 by friction effect.
  • the central aquatic bicycle structure of the various figures is intended to be mounted in the center of a bath to be immersed in water, in a system equipped with a hydraulic pump to produce jets of water. water intended to massage the user of the system.
  • the hydraulic pump is connected to the braking system 14 via a pipe connected to a front opening 19 provided for this purpose on the front face of the fixed support housing 16 of the braking system 14.
  • the opening 19 for connection to the hydraulic system is located in the lower part of the housing 16, to introduce water into an internal cavity which is delimited by the bottom or bottom of the housing 16 and a lower face 21 of the friction member 17.
  • This cavity which communicates with the opening 19 is marked by 22 in the figure 2 .
  • the friction member 17 has, in its upper part, a generally wedge-shaped trapezoidal section to engage in the groove 18 of the sheave 8 which itself has a trapezoidal section. Under these conditions, when the friction member 17 is subjected to a force tending to bring it closer to the axis of rotation of the sheave 8, it generates on the flanks of the trapezoidal groove 18 relatively large pressing forces.
  • the assembly constituted by the housing 16 of the fixed support and the fictional member 17 which jointly delimit the cavity 22, constitutes a hydraulic cylinder capable of displacing and / or exerting forces on the friction member 17 to tend to bring it closer to the axis of the pedal to brake by applying a pressure force on the flanks of the peripheral groove 18 of réa 8.
  • the friction member 17 can be slidably mounted in the box 16 in a relatively loose sliding fit, which makes it possible to simply cause the evacuation of air trapped in the cavity 22 during the commissioning of the equipment.
  • the radial clearance between the friction member 17 and the housing 16 is between 0.5 mm and 1 mm on each side of the member 17.
  • the internal cavity 22 is supplied with water by a conduit hydraulic connected to a pump, so that the water can leak more or less of the cavity 16.
  • the adjustment of the braking intensity generated by the system according to the invention is obtained very simply by modulating the characteristics of the hydraulic supply of the opening 19, namely the pressure and the flow rate. water supply.
  • This modulation can simply be obtained by means of a valve or valve crossed by the pipe in question.
  • the valve, or the valve is arranged on the pipe in question, connecting the hydraulic pump to the opening 19 of the housing 16.
  • this valve or valve in a closing direction to reduce the flow rate and the water pressure introduced into the cavity 22.
  • the user wishing to increase the braking level must open this valve or valve to increase the water flow and thereby the pressure of the water that is present inside the cavity 22.
  • valve is disposed on a bypass line of the pipe connecting the pump to the opening 19 of the housing 16.
  • the valve when the valve is on, the pressure of the water flowing to the housing 16 drops and there is less leakage within the friction member 17.
  • the valve makes it possible to regulate the flow rate of leakage in the bypass line and, consequently, when the pump operates at constant speed, the flow rate and the pressure in the supply duct of the cavity 22.
  • the invention makes it possible to produce a braking system which is highly adapted to an aquatic bicycle context since it has a single moving part and is hydraulically controlled.
  • the single moving part namely the friction member 17 may be made of a plastic material or the like, and a hydraulic control (such as a valve or valve) which is necessarily simple to implement in the case of a water bike, presents a risk of malfunction almost zero.
  • a hydraulic control such as a valve or valve

Abstract

The system (14) has a fixed holder in form of a housing (16) secured to a main foot (2) and a seat or saddle (6) of aqua bike and a friction element (17) moving with respect to the holder. The element bears against a rotary plate i.e. sheave (8) driven by a crankset (7) in order to brake the crankset by exerting pressing force on the plate. An actuating unit exerts an adjustable force corresponding to the pressing force on the element. The unit includes a hydraulic cylinder to be supplied by a hydraulic circuit of the bike in order to adjust the braking force by acting on the circuit.

Description

L'invention concerne un appareillage du type vélo aquatique, comportant une baignoire renfermant une assise et un pédalier ainsi que des jets d'eau, et dans lequel l'utilisateur s'installe pour pédaler en ayant ses jambes immergées et massée par les jets d'eau.The invention relates to an apparatus of the aquatic bike type, comprising a bathtub enclosing a seat and a pedal and water jets, and in which the user settles to pedal with his legs immersed and massaged by the jets d 'water.

ARRIERE PLAN DE L'INVENTIONBACKGROUND OF THE INVENTION

Une telle installation permet à l'utilisateur de pratiquer des efforts physiques sans supporter le poids de son corps tout en étant massé par les jets d'eau. Elle comporte typiquement une baignoire ou cuve équipée de buses à sa face interne, entourant une structure centrale portant un pédalier et une assise, ces buses étant orientées vers le centre de la baignoire pour générer de jets d'eau massant les jambes de l'utilisateur.Such an installation allows the user to practice physical effort without supporting the weight of his body while being massaged by the water jets. It typically comprises a bathtub or tub equipped with nozzles on its inner face, surrounding a central structure carrying a pedal and a seat, these nozzles being directed towards the center of the tub to generate jets of water massaging the user's legs. .

En pratique, l'utilisateur s'installe d'abord sur la structure centrale en s'asseyant sur l'assise tout en plaçant ses pieds sur les pédales, avant d'enclencher le remplissage de la baignoire et l'activation des jets d'eau pour commencer sa séance d'exercice physique.In practice, the user first installs on the central structure by sitting on the seat while placing his feet on the pedals, before engaging the filling of the tub and the activation of the jets of water to start your exercise session.

A cet effet, le pédalier est équipé d'un système de freinage pour que l'utilisateur pédale à l'encontre d'un couple résistant qui est réglable, de la même manière que dans le cas d'un vélo d'appartement.For this purpose, the pedal is equipped with a braking system for the user to pedal against a resistant torque that is adjustable, in the same way as in the case of a exercise bike.

A l'usage, les composants du frein réglable qui équipent le pédalier se détériorent assez rapidement, du fait qu'ils baignent à peu près continuellement dans l'eau, de même que leurs moyens de commande.In use, the components of the adjustable brake that equip the crankset deteriorate fairly quickly, because they bathe almost continuously in the water, as well as their control means.

Par ailleurs, FR-A-1 584 106 divulgue un vélo aquatique comprenant un siège, un guidon et un pédalier immergés dans un bassin d'eau. Le pédalier comporte une roue qui est entraînée en rotation lors du pédalage et qui peut être freinée par un patin de freinage. Le patin est actionné par un vérin pour venir en appui contre la roue du pédalier de manière à entraîner, par frottements, le freinage de la roue. L'effort de freinage appliqué par le patin sur la roue peut être réglé par l'utilisateur en manipulant un levier. Ce mode de réglage est peu ergonomique car l'usager doit manipuler le levier en pédalant.Otherwise, FR-A-1,584,106 discloses an aquatic bike including a seat, handlebars and pedals immersed in a pool of water. The pedal has a wheel that is rotated during pedaling and can be braked by a brake pad. The pad is actuated by a jack to abut against the wheel of the pedal so as to cause, by friction, braking of the wheel. The braking force applied by the pad on the wheel can be adjusted by the user by manipulating a lever. This mode of adjustment is not very ergonomic because the user must manipulate the lever by pedaling.

Par ailleurs, US-A-5 267 925 divulgue une machine de musculation qui entraîne au pédalage. Cette machine n'est pas adaptée pour être disposée dans un bassin d'eau puisqu'elle présente des dimensions importantes et inclut un alternateur.Otherwise, US-A-5,267,925 discloses a weight machine that drives pedaling. This machine is not adapted to be arranged in a basin of water since it has significant dimensions and includes an alternator.

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

Le but de l'invention est de proposer un vélo aquatique dont le freinage se règle plus facilement et dont les composants du frein s'usent moins rapidement.The object of the invention is to provide a water bike whose braking is more easily adjusted and whose brake components wear out less quickly.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

A cet effet, l'invention a pour objet un système de freinage pour vélo aquatique, comportant un support fixe destiné à être solidarisé au bâti du vélo aquatique et un organe de friction porté par le support fixe en étant mobile par rapport à ce support fixe, cet organe de friction étant destiné à venir en appui sur un plateau rotatif entraîné par le pédalier pour le freiner en exerçant un effort presseur sur cet plateau, ainsi que des moyens d'actionnement pour exercer sur l'organe de friction un effort ajustable correspondant à l'effort presseur, les moyens d'actionnement comportant un vérin hydraulique destiné à être alimenté par un circuit hydraulique du vélo aquatique, pour exercer l'effort ajustable correspondant à l'effort presseur. Conformément à l'invention le support a une forme de boîtier ayant une face ouverte à travers laquelle l'organe de friction est monté coulissant, et dans lequel ce support comporte une ouverture de connexion à une alimentation hydraulique, pour introduire de l'eau dans une chambre délimitée par ce boîtier et l'organe de friction formant conjointement le vérin hydraulique.To this end, the subject of the invention is a braking system for aquatic cycling, comprising a fixed support intended to be secured to the frame of the water bike and a friction member carried by the fixed support being movable relative to this fixed support , this friction member being intended to bear on a rotary plate driven by the pedal to brake by exerting a pressing force on the plate, and actuating means for exerting on the friction member corresponding adjustable effort the pressure means, the actuating means comprising a hydraulic cylinder for being fed by a hydraulic circuit of the water bike, to exert the adjustable force corresponding to the pressure force. According to the invention the support has a box shape having an open face through which the friction member is slidably mounted, and wherein the support has an opening for connection to a hydraulic supply, for introducing water into a chamber defined by this housing and the friction member jointly forming the hydraulic cylinder.

Selon des aspects avantageux mais non obligatoires de l'invention, un système de freinage peut incorporer une ou plusieurs des caractéristiques suivantes, prises dans toute combinaison techniquement admissible :

  • Le plateau a une forme de réa, et dans lequel l'organe de friction a une forme de coin s'engageant dans la gorge du réa pour exercer un effort presseur orienté radialement par rapport à ce réa.
  • Le système est destiné à être installé en dessous du plateau rotatif.
  • L'ouverture de connexion à l'alimentation hydraulique est disposée en partie basse du boîtier.
  • L'effort presseur de l'organe de friction sur le plateau rotatif est ajustable en modulant les caractéristiques de l'alimentation hydraulique de l'ouverture du boîtier, notamment le débit et la pression.
  • La modulation des caractéristiques de l'alimentation hydraulique est obtenue en agissant sur une vanne ou un robinet.
  • L'organe de friction est monté coulissant de manière lâche par rapport au boîtier.
  • Des moyens d'alimentation hydraulique de la chambre du boîtier comprennent une pompe.
According to advantageous but not compulsory aspects of the invention, a braking system may incorporate one or more of the following features, taken in any technically permissible combination:
  • The plate has a shape réa, and wherein the friction member has a wedge shape engaging in the groove of réa to exert a pressure force oriented radially relative to this réa.
  • The system is intended to be installed below the turntable.
  • The connection opening to the hydraulic supply is arranged at the bottom of the housing.
  • The pressing force of the friction member on the turntable is adjustable by modulating the characteristics of the hydraulic supply of the opening of the housing, including flow and pressure.
  • The modulation of the characteristics of the hydraulic supply is obtained by acting on a valve or a tap.
  • The friction member is slidably mounted loosely with respect to the housing.
  • Hydraulic supply means of the chamber of the housing comprise a pump.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

  • La figure 1 est une vue d'ensemble montrant en perspective d'une structure centrale pour vélo aquatique équipée d'un système de freinage selon l'invention ;The figure 1 is an overview showing in perspective of a central structure for aquatic bicycle equipped with a braking system according to the invention;
  • La figure 2 est une vue latérale en coupe de la structure centrale pour vélo aquatique équipée d'un système de freinage selon l'invention ;The figure 2 is a sectional side view of the central structure for aquatic bicycle equipped with a braking system according to the invention;
  • La figure 3 est une vue de face de la structure centrale pour vélo aquatique équipée d'un système de freinage selon l'invention.The figure 3 is a front view of the central structure for aquatic bicycle equipped with a braking system according to the invention.
DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

La structure centrale de vélo aquatique qui est représentée dans la figure 1 en y étant repérée par 1 comporte un pied principal 2 qui est orienté verticalement lorsque le pédalier est installé comme dans la figure 1.The central aquatic bike structure that is represented in the figure 1 by being marked by 1 has a main foot 2 which is oriented vertically when the pedal is installed as in the figure 1 .

Ce pied 2 porte à son extrémité supérieure une assise ou selle 3, et un ensemble 4 de pédalage à sa partie inférieure avant. Cet ensemble 4 comporte un bâti en tôle 6 rigidement solidaire de la portion inférieure du pied 2, et qui porte un pédalier 7 sur lequel est monté un plateau central en forme de réa 8, ce pédalier comprenant deux manivelles 9 et 11 portées par un axe traversant et situées de part et d'autre du réa 8 qui est monté en position centrale.This foot 2 carries at its upper end a seat or saddle 3, and a set 4 pedaling at its lower front. This assembly 4 comprises a frame made of sheet metal 6 rigidly secured to the lower portion of the foot 2, and which carries a pedal 7 on which is mounted a central plate shaped sheave 8, this pedal comprising two cranks 9 and 11 carried by an axis through and located on both sides of the sheave 8 which is mounted in a central position.

Comme le montre clairement la figure 1, le bâti 6 comporte deux flancs parallèles 12 et 13 en tôle, traversés par l'axe du pédalier, et qui sont situés de part et d'autre du réa ou plateau 8. Les manivelles sont situées de part et d'autre de ces flancs de tôle qui portent les paliers, non repérés, supportant l'axe du pédalier.As clearly shown in figure 1 , the frame 6 comprises two parallel sides 12 and 13 made of sheet metal, crossed by the axis of the pedal, and which are located in on either side of the sheave or plate 8. The cranks are located on either side of these sheet metal flanks which carry the bearings, unmarked, supporting the axis of the crankset.

Un système de freinage 14 du pédalier 7 est installé en partie inférieure du bâti 6, et ce système comporte un boîtier 16 qui est rigidement solidarisé à la partie basse du bâti 6, et un organe de friction 17 qui est monté coulissant dans ce boîtier 16. Ainsi, le système de freinage 14 est disposé en dessous du plateau central 8.A braking system 14 of the pedal 7 is installed in the lower part of the frame 6, and this system comprises a housing 16 which is rigidly secured to the lower part of the frame 6, and a friction member 17 which is slidably mounted in this housing 16 Thus, the braking system 14 is disposed below the central plate 8.

L'organe de friction est monté coulissant selon un axe vertical coïncidant avec un axe radial du pédalier, de sorte que l'organe de friction 16 est apte à venir radialement en appui sur le réa 8 pour s'insérer dans la gorge 18 de ce réa afin d'exercer un effort presseur qui freine ce réa 8 par effet de friction.The friction member is slidably mounted along a vertical axis coinciding with a radial axis of the pedal, so that the friction member 16 is adapted to come radially bearing on the sheave 8 to fit into the groove 18 of this sheave in order to exert a pressing force which brakes this sheave 8 by friction effect.

Comme indiqué plus haut, la structure centrale de vélo aquatique des différentes figures est destinée à être montée au centre d'une baignoire pour être immergée dans l'eau, au sein d'un système équipé d'une pompe hydraulique pour produire des jets d'eau destinés à masser l'utilisateur du système.As indicated above, the central aquatic bicycle structure of the various figures is intended to be mounted in the center of a bath to be immersed in water, in a system equipped with a hydraulic pump to produce jets of water. water intended to massage the user of the system.

La pompe hydraulique est connectée au système de freinage 14 par l'intermédiaire d'une conduite connectée à une ouverture frontale 19 prévue à cet effet en face avant du boîtier de support fixe 16 du système de freinage 14.The hydraulic pump is connected to the braking system 14 via a pipe connected to a front opening 19 provided for this purpose on the front face of the fixed support housing 16 of the braking system 14.

Comme visible dans la figure, l'ouverture 19 de connexion au système hydraulique est située en partie basse du boîtier 16, pour introduire de l'eau dans une cavité interne qui est délimitée par le bas ou fond du boîtier 16 et une face inférieure 21 de l'organe de friction 17. Cette cavité qui communique avec l'ouverture 19 est repérée par 22 dans la figure 2.As shown in the figure, the opening 19 for connection to the hydraulic system is located in the lower part of the housing 16, to introduce water into an internal cavity which is delimited by the bottom or bottom of the housing 16 and a lower face 21 of the friction member 17. This cavity which communicates with the opening 19 is marked by 22 in the figure 2 .

Comme visible dans les figures, l'organe de friction 17 a, dans sa partie supérieure, une forme générale de coin à section trapézoïdale pour s'engager dans la gorge 18 du réa 8 qui présente elle-même une section trapézoïdale. Dans ces conditions, lorsque l'organe de friction 17 est soumis à un effort tendant à le rapprocher de l'axe de rotation du réa 8, il génère sur les flancs de la gorge trapézoïdale 18 des efforts presseurs relativement importants.As shown in the figures, the friction member 17 has, in its upper part, a generally wedge-shaped trapezoidal section to engage in the groove 18 of the sheave 8 which itself has a trapezoidal section. Under these conditions, when the friction member 17 is subjected to a force tending to bring it closer to the axis of rotation of the sheave 8, it generates on the flanks of the trapezoidal groove 18 relatively large pressing forces.

Comme on l'a compris, l'ensemble constitué par le boîtier 16 du support fixe et l'organe de fiction 17 qui délimitent conjointement la cavité 22, constitue un vérin hydraulique capable de déplacer et/ou exercer des efforts sur l'organe de friction 17 afin de tendre à le rapprocher de l'axe du pédalier pour le freiner en appliquant un effort presseur sur les flancs de la gorge périphérique 18 du réa 8.As understood, the assembly constituted by the housing 16 of the fixed support and the fictional member 17 which jointly delimit the cavity 22, constitutes a hydraulic cylinder capable of displacing and / or exerting forces on the friction member 17 to tend to bring it closer to the axis of the pedal to brake by applying a pressure force on the flanks of the peripheral groove 18 of réa 8.

D'une manière générale, l'organe de friction 17 peut être monté à coulissement dans le boiter 16 selon un ajustement glissant relativement lâche, ce qui permet de provoquer de manière simple l'évacuation d'air emprisonné dans la cavité 22 lors de la mise en service de l'appareillage. En pratique, le jeu radial entre l'organe de friction 17 et le boîtier 16 est compris entre 0,5 mm et 1 mm de chaque côté de l'organe 17. Par ailleurs, la cavité interne 22 est alimentée en eau par un conduit hydraulique relié à une pompe, de sorte que l'eau peu fuir de manière plus ou moins importante de la cavité 16.In general, the friction member 17 can be slidably mounted in the box 16 in a relatively loose sliding fit, which makes it possible to simply cause the evacuation of air trapped in the cavity 22 during the commissioning of the equipment. In practice, the radial clearance between the friction member 17 and the housing 16 is between 0.5 mm and 1 mm on each side of the member 17. In addition, the internal cavity 22 is supplied with water by a conduit hydraulic connected to a pump, so that the water can leak more or less of the cavity 16.

Comme on le comprend, l'ajustement de l'intensité du freinage que génère le système selon l'invention est obtenu très simplement en modulant les caractéristiques du l'alimentation hydraulique de l'ouverture 19, à savoir la pression et le débit d'alimentation en eau.As can be understood, the adjustment of the braking intensity generated by the system according to the invention is obtained very simply by modulating the characteristics of the hydraulic supply of the opening 19, namely the pressure and the flow rate. water supply.

Cette modulation peut tout simplement être obtenue au moyen d'un robinet ou vanne traversé par la conduite en question. Le robinet, ou la vanne, est disposé sur la conduite en question, reliant la pompe hydraulique à l'ouverture 19 du boîtier 16. Dans le cas où l'utilisateur souhaite réduire le niveau de freinage, il lui faut alors actionner ce robinet ou vanne dans un sens de fermeture afin de réduire le débit et la pression d'eau introduite dans la cavité 22. L'utilisateur souhaitant augmenter le niveau de freinage doit ouvrir ce robinet ou vanne pour accroître le débit d'eau et par là même la pression de l'eau qui est présente à l'intérieur de la cavité 22.This modulation can simply be obtained by means of a valve or valve crossed by the pipe in question. The valve, or the valve, is arranged on the pipe in question, connecting the hydraulic pump to the opening 19 of the housing 16. In the case where the user wishes to reduce the braking level, he must then actuate this valve or valve in a closing direction to reduce the flow rate and the water pressure introduced into the cavity 22. The user wishing to increase the braking level must open this valve or valve to increase the water flow and thereby the pressure of the water that is present inside the cavity 22.

En variante, le robinet est disposé sur une ligne de dérivation de la conduite reliant la pompe à l'ouverture 19 du boîtier 16. Dans ce cas, lorsque le robinet est passant, la pression de l'eau circulant vers le boîtier 16 chute et il y a moins de fuites au sein de l'organe de friction 17. Le robinet permet de régler le débit de fuite dans la ligne de dérivation et, par voie de conséquence, lorsque la pompe fonctionne à régime constant, le débit et la pression dans le conduit d'alimentation de la cavité 22.Alternatively, the valve is disposed on a bypass line of the pipe connecting the pump to the opening 19 of the housing 16. In this case, when the valve is on, the pressure of the water flowing to the housing 16 drops and there is less leakage within the friction member 17. The valve makes it possible to regulate the flow rate of leakage in the bypass line and, consequently, when the pump operates at constant speed, the flow rate and the pressure in the supply duct of the cavity 22.

D'une manière générale, l'invention permet de réaliser un système de freinage qui est hautement adapté à un contexte de vélo aquatique du fait qu'il présente une seule pièce mobile, et qu'il est commandé de manière hydraulique.In general, the invention makes it possible to produce a braking system which is highly adapted to an aquatic bicycle context since it has a single moving part and is hydraulically controlled.

L'unique pièce mobile, à savoir l'organe de friction 17, peut être fabriquée dans une matière plastique ou analogue, et une commande hydraulique (comme une vanne ou robinet) qui est nécessairement simple à mettre en oeuvre dans le cas d'un vélo aquatique, présente un risque de dysfonctionnement quasiment nul.The single moving part, namely the friction member 17 may be made of a plastic material or the like, and a hydraulic control (such as a valve or valve) which is necessarily simple to implement in the case of a water bike, presents a risk of malfunction almost zero.

Claims (9)

Système de freinage (14) pour vélo aquatique, comportant un support fixe (16) destiné à être solidarisé au bâti (2, 6) du vélo aquatique et un organe de friction (17) porté par le support fixe (16) en étant mobile par rapport à ce support fixe (16), cet organe de friction (17) étant destiné à venir en appui sur un plateau rotatif (8) entraîné par un pédalier (7) du vélo aquatique pour le freiner en exerçant un effort presseur sur ce plateau (8), ainsi que des moyens d'actionnement pour exercer sur l'organe de friction (17) un effort ajustable correspondant à l'effort presseur, les moyens d'actionnement comportant un vérin hydraulique destiné à être alimenté par un circuit hydraulique du vélo aquatique, pour exercer l'effort ajustable correspondant à l'effort presseur, ce système de freinage étant caractérisé en ce que le support (16) a une forme de boîtier ayant une face ouverte à travers laquelle l'organe de friction (17) est monté coulissant, et dans lequel ce support (16) comporte une ouverture (19) de connexion à une alimentation hydraulique, pour introduire de l'eau dans une chambre (22) délimitée par ce boîtier (16) et l'organe de friction (17) formant conjointement le vérin hydraulique.Braking system (14) for aquatic cycling, comprising a fixed support (16) intended to be secured to the frame (2, 6) of the aquatic bicycle and a friction member (17) carried by the fixed support (16) while being mobile relative to this fixed support (16), this friction member (17) being intended to bear on a turntable (8) driven by a pedal (7) of the water bike to brake it by exerting a pressing force on this plate (8), as well as actuating means for exerting on the friction member (17) an adjustable force corresponding to the pressing force, the actuating means comprising a hydraulic jack intended to be fed by a hydraulic circuit of the aquatic bicycle, to exert the adjustable force corresponding to the pressure force, this braking system being characterized in that the support (16) has a box shape having an open face through which the friction member (17 ) is slidably mounted, and in which support (16) has an opening (19) for connection to a hydraulic supply, for introducing water into a chamber (22) delimited by this housing (16) and the friction member (17) jointly forming the hydraulic cylinder. Système selon la revendication 1, dans lequel le plateau (8) a une forme de réa, et dans lequel l'organe de friction (17) a une forme de coin s'engageant dans la gorge (18) du réa (8) pour exercer un effort presseur orienté radialement par rapport à ce réa (8).A system according to claim 1, wherein the plate (8) has a sheave shape, and wherein the friction member (17) is wedge-shaped engaging the groove (18) of the sheave (8) for to exert a pressure force oriented radially with respect to this sheave (8). Système selon l'une des revendications 1 et 2, caractérisé en ce qu'il est destiné à être installé en dessous du plateau rotatif (8).System according to one of claims 1 and 2, characterized in that it is intended to be installed below the turntable (8). Système selon l'une des revendications précédentes, caractérisé en ce que l'ouverture (19) de connexion à l'alimentation hydraulique est disposée en partie basse du boîtier (16).System according to one of the preceding claims, characterized in that the opening (19) of the hydraulic supply connection is arranged in the lower part of the housing (16). Système selon l'une des revendications précédentes, caractérisé en ce que l'effort presseur de l'organe de friction (17) sur le plateau rotatif (8) est ajustable en modulant les caractéristiques de l'alimentation hydraulique de l'ouverture (19) du boîtier (16), notamment le débit et la pression.System according to one of the preceding claims, characterized in that the pressing force of the friction member (17) on the turntable (8) is adjustable by modulating the characteristics of the hydraulic supply of the opening (19). ) of the housing (16), including flow and pressure. Système selon la revendication 5, caractérisé en ce que la modulation des caractéristiques de l'alimentation hydraulique est obtenue en agissant sur une vanne ou un robinet.System according to claim 5, characterized in that the modulation of the characteristics of the hydraulic supply is obtained by acting on a valve or a tap. Système selon l'une des revendications précédentes, caractérisé en ce que l'organe de friction (17) est monté coulissant de manière lâche par rapport au boîtier (16).System according to one of the preceding claims, characterized in that the friction member (17) is slidably mounted loosely with respect to the housing (16). Système selon l'une des revendications précédentes, caractérisé en ce que des moyens d'alimentation hydraulique de la chambre (22) du boîtier (16) comprennent une pompe.System according to one of the preceding claims, characterized in that hydraulic supply means of the chamber (22) of the housing (16) comprise a pump. Système selon les revendications 6 et 8, caractérisé en ce que le robinet, ou la vanne, est disposée sur une conduite reliant la pompe à l'ouverture (19) du boîtier (16).System according to claims 6 and 8, characterized in that the valve, or the valve, is disposed on a pipe connecting the pump to the opening (19) of the housing (16).
EP13192974.7A 2012-11-15 2013-11-14 Crankset for aquacycling bicycle Active EP2732853B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1260863A FR2998021A1 (en) 2012-11-15 2012-11-15 AQUATIC BIKE PEDAL

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EP2732853A1 true EP2732853A1 (en) 2014-05-21
EP2732853B1 EP2732853B1 (en) 2015-10-14

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EP13192974.7A Active EP2732853B1 (en) 2012-11-15 2013-11-14 Crankset for aquacycling bicycle

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EP (1) EP2732853B1 (en)
FR (1) FR2998021A1 (en)
HK (1) HK1197658A1 (en)
WO (1) WO2014076212A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110812787A (en) * 2019-11-13 2020-02-21 段艳文 Aerobic exercise physical therapy device for treating cognitive disorder of neurology

Citations (4)

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Publication number Priority date Publication date Assignee Title
FR1584106A (en) 1968-04-06 1969-12-12
EP0058052A2 (en) * 1981-02-06 1982-08-18 HERBERT TERRY & SONS LIMITED Exerciser device
US5267925A (en) 1991-12-03 1993-12-07 Boyd Control Systems, Inc. Exercise dynamometer
US5951447A (en) * 1997-07-07 1999-09-14 Butler; Brian R. Aquatic exercise and rehabilitation device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1584106A (en) 1968-04-06 1969-12-12
EP0058052A2 (en) * 1981-02-06 1982-08-18 HERBERT TERRY & SONS LIMITED Exerciser device
US5267925A (en) 1991-12-03 1993-12-07 Boyd Control Systems, Inc. Exercise dynamometer
US5951447A (en) * 1997-07-07 1999-09-14 Butler; Brian R. Aquatic exercise and rehabilitation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110812787A (en) * 2019-11-13 2020-02-21 段艳文 Aerobic exercise physical therapy device for treating cognitive disorder of neurology

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WO2014076212A3 (en) 2014-07-10
WO2014076212A2 (en) 2014-05-22
EP2732853B1 (en) 2015-10-14
FR2998021A1 (en) 2014-05-16
HK1197658A1 (en) 2015-02-06

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