EP1260249A1 - Übungsgerät mit Pneumatikzylinder - Google Patents

Übungsgerät mit Pneumatikzylinder Download PDF

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Publication number
EP1260249A1
EP1260249A1 EP02358010A EP02358010A EP1260249A1 EP 1260249 A1 EP1260249 A1 EP 1260249A1 EP 02358010 A EP02358010 A EP 02358010A EP 02358010 A EP02358010 A EP 02358010A EP 1260249 A1 EP1260249 A1 EP 1260249A1
Authority
EP
European Patent Office
Prior art keywords
chamber
pneumatic cylinder
gymnastic apparatus
cylinder
tube
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
EP02358010A
Other languages
English (en)
French (fr)
Other versions
EP1260249B1 (de
Inventor
Yves Minguet
Stéphane Mercier
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.)
Multi Form
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Multi Form
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Filing date
Publication date
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Publication of EP1260249A1 publication Critical patent/EP1260249A1/de
Application granted granted Critical
Publication of EP1260249B1 publication Critical patent/EP1260249B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/00181—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices comprising additional means assisting the user to overcome part of the resisting force, i.e. assisted-active exercising
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/00058—Mechanical means for varying the resistance
    • A63B21/00069—Setting or adjusting the resistance level; Compensating for a preload prior to use, e.g. changing length of resistance or adjusting a valve
    • A63B21/00072—Setting or adjusting the resistance level; Compensating for a preload prior to use, e.g. changing length of resistance or adjusting a valve by changing the length of a lever
    • 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
    • A63B21/0085—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 using pneumatic force-resisters
    • A63B21/0087—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 using pneumatic force-resisters of the piston-cylinder type

Definitions

  • the present invention relates to an apparatus for gymnastics or rehabilitation comprising a pneumatic cylinder, and in particular to an apparatus for mobile counterweights and pneumatic counterbalance cylinder.
  • the technical field of the invention is that of the manufacture of gymnastics with pneumatic cylinder and mobile counterweight.
  • the invention applies in particular - but not exclusively - to devices gymnastics comprising a resistant device with weights mounted mobile substantially vertically, and further comprising a pneumatic cylinder of compensation, partial or total, of the mass of the moving weights.
  • US Patent 5,147,263 describes such an apparatus in which the pneumatic cylinder comprises, arranged inside, of a double-walled cylindrical body, a piston suspended from an upward weight return cable, which is slidably mounted with play in a vertical cylindrical chamber, and a vacuum pump capable of in depression the lower part of the chamber located under the piston for, attracting the piston down, exert a force to compensate for part of the mass of the weights.
  • a disadvantage of this device is its large size which results from the need to use a large surface piston to compensate for the level generally weak from the depression caused by a rotor pump, weakness vacuum being accentuated by the leak resulting from the clearance provided around the piston; another drawback is that this jack can only be used in a vertical position.
  • An object of the invention is to provide an improved gymnastics apparatus and which remedies, at least in part, the drawbacks of known devices.
  • the invention consists in proposing an apparatus for gymnastics incorporating a pneumatic cylinder, the cylinder comprising a piston mounted sliding in a first cylindrical chamber which is in direct communication with a second chamber, called attenuation chamber, whose volume is greater to that of the cylindrical chamber.
  • the presence and large volume of the attenuation chamber combined with means of direct communication between the two rooms, allow strongly limit the pressure fluctuations of the air contained in these rooms, by particular pressure fluctuations resulting from acceleration or sudden deceleration of the piston, due in particular to a sudden variation in the force exercised by a user of the device; these means therefore make it possible to avoid the appearance of "hard spots" during a stroke of the piston in the chamber cylindrical, or at least to limit them strongly compared to gymnastics with a remote reserve of compressed air which is connected to the jack by a conduit preventing such direct communication.
  • Optimal results have been observed by implementing the means of implementation direct communication of the two chambers in the form of at least one opening provided in the wall delimiting the cylindrical chamber, the section of which has a surface at least of the same order of magnitude as that of the cross section of this cylindrical chamber, in particular substantially at least equal to the latter; such a opening allows the free circulation of air between the two chambers, and allows by therefore to maintain the two chambers at the same pressure, even during a acceleration or deceleration of the piston. So all of the air in one and the other of the two chambers participates, by its compressibility, in the attenuation of pressure fluctuations when the piston speed changes.
  • the volume of the attenuation chamber is at least five times greater than that of the chamber receiving the piston; preferably the value of the volume ratio of the second bedroom to that of the first bedroom is located in a range from 5 to 30, especially in a range from 8 to 20.
  • each of the two chambers is cylindrical (of circular section (3), or, for reasons of space, any shape such as square or rectangular section), the first chamber being delimited by a first section of tube disposed inside a second tube section delimiting the second chamber, said tube sections being coaxial; preferably, in this case, the ratio of the radius of the second tube to the radius of the first tube is situated in a range going from 3 to 6, for example close to 4; this limits the size of the cylinder.
  • the invention can be used with a vacuum pump arranged to being able to vacuum said chambers, it is generally more advantageous use an air compressor fitted with a compressed air buffer tank which is connected to said chambers by a conduit.
  • the gymnastic apparatus includes a dividing device stroke, such as a hoist, which is disposed between the member actuated by the user and the cylinder-resistant device and, where applicable, by weight.
  • a dividing device stroke such as a hoist
  • this allows the use of a jack whose stroke and size are reduced; furthermore the displacement of air in the cylinder (in mass and in flow) is also reduced, which contributes to reducing the risk of sudden onset of pressure or depression.
  • the race divider can include a link, which can be a flexible link such as a cable or a strap, which connects the organ to the resistant device.
  • the cylinder of the device according to the invention can be of the double-acting type, in order to constitute a jack resistant to the effort of the user or reducing the effort assistance; for this purpose, compressed air can be selectively admitted into a chamber of the jack which is situated on the side opposite to that of said first chamber, relative to the cylinder piston; however, according to a preferred embodiment, the gymnastics apparatus has a single-acting cylinder, at least two parts heavy sliding mounted substantially vertically along two guides, the cylinder rod extending parallel to the guides, equidistant from them, and the heavy moving parts extending at least in part around the rod and the body cylinder; this provides a compact and simple design device.
  • An advantage of the invention is to facilitate the installation of the compressor in distance from cylinder and device, thanks to the accumulation effect played by the chamber mitigation; this has the advantage of keeping the noise source away from the user what is the compressor.
  • Figure 1 illustrates in schematic perspective view an apparatus for gymnastics according to the invention which comprises two mobile heavy parts vertically and a single-acting cylinder adapted to compensate for the mass of these parts heavy.
  • Figure 2 illustrates in schematic sectional view a single acting cylinder the device of Figure 1 and its compressed air supply circuit.
  • FIG. 3 schematically illustrates another embodiment of an apparatus according to the invention.
  • the apparatus 100 comprises an element 32 on which the user applies his effort; this bar-shaped element is movably mounted in rotation along axis 99, by means of a bearing provided at its first end 98; the second end 97 of the bar 32 is integral with a first end a flexible element 12 for transmitting force, by a mechanical fixing 24.
  • Element 12 consisting of a cable or a strap, is secured to the structure fixed the device 100 at its second end by a fixing 22; element 12 rolls and / or slides on two bearings or pulleys 96 secured to the fixed structure of the device, as well as on a bearing or pulley 21 secured to the mobile structure of the device.
  • the fixed structure of the device comprises a base 95 able to rest on the ground, two vertical uprights 94 as well as an upper horizontal beam 93 receiving the attachment 22, these four parts forming a kind of rectangular frame; two trees 92 are fixed to this frame and serve to guide the mobile structure of the device which is slidably mounted vertically with respect to the fixed structure.
  • the mobile structure comprises two heavy parts 1a and 1b suspended by their respective upper end to a horizontal beam 28; beam 28 is secured in its middle to the pulley 21 mounted to rotate freely along the horizontal axis 91 thanks to a yoke (not shown); the connection between the fixed structure and the structure mobile is ensured by two sliding sleeves or pads 90 respectively on the trees 92.
  • the jack 2 comprises a body 2a resting by its base on the base 95, and a rod 2b whose upper end is secured to the beam 28 or else bears against the underside thereof; when the cylinder is supplied with compressed air, the rod 2b exerts a vertical upward force along the vertical axis 89 of symmetry of the part mobile of the device, so that the mass of parts 1a and 1b is at least partly compensated, which requires less effort from the user to lift the parts heavy 1a, 1b; moreover, the system constituted by the element 12, the pulleys 21, 96 and the fasteners 22, 24, form a kind of hoist which halves the effort of the user by comparison with the mass of the weights 1a, 1b (minus cylinder assistance).
  • This force dividing device also divides the travel of the mobile structure compared to the stroke of the end 24 linked to the bar 32, which causes also a speed doubled of the mobile structure - and consequently of the rod of the cylinder - by comparison with the speed of said end 24 of element 12.
  • the mass, dimensions and spacing on either side of the axis 89 (along which the jack exerts its force) of the parts 1a and 1b are substantially identical, so that the mobile structure is substantially symmetrical and balanced with respect to this axis.
  • the body 2a of the actuator 2 comprises a section 40 of metal tube of axis 89, which is sealed at each end by two bottoms 41 and 42 dishes.
  • the lower bottom 41 is pierced with an orifice equipped with a device purge, while the upper bottom 42 is pierced with a central orifice 49 and two peripheral orifices: an orifice 43 for connecting a conduit 44 for connection to a device 45 for displaying the pressure prevailing in the chambers of the jack, and a orifice 46 allowing the entry into the chambers of the jack of air compressed by a compressor 48 and transported by a conduit 47.
  • the rod 2b has at its upper end a means 55 for connecting or bearing on the beam (28 Figure 1), and is integral at its lower end with a piston 57 sliding in the tube 50 along the axis 89.
  • the part 58 of the chamber delimited by the tube 50 which is located below piston 57 is in free communication, through opening 51, with the chamber attenuation 59 delimited by the tube 40 and the bottoms 41, 42; this volume is full of compressed air delivered at 46 when the controls 61 or 65 are actuated.
  • the part 54 of the chamber delimited by the tube 50 is located above the piston 57 is in free communication with the atmosphere thanks to the vents 56 whose cumulative surface is preferably of the same order of magnitude as that of the section transverse of the chamber 54.
  • a solenoid valve 60 allows, by action of the user on a control 61, to supply the chambers 58, 59 with compressed air delivered by the compressor 48, by through conduits 62, 63 and 47; conversely, user action on a command 65 allows the compressed air to be removed from these chambers by the conduits 47, 66 and a solenoid valve 64.
  • the height of the jack is chosen at a value close to that 18 of the heavy parts 1a, 1b (FIG. 1), and the end bottom of the tube 50 is positioned a short distance (along the axis 89) from the bottom 41; however, this distance is chosen to be sufficient not to disturb free movement between chambers 58 and 59.
  • the tube 50 has an internal diameter of 45 mm and the tube 40 has an internal diameter of 180 mm; the cylinder has a height of 550 mm (including the rod in the retracted position) and a stroke of 400 mm, and the ratio of the volume of the chamber 59 to the volume of the cylindrical chamber 54, 58 in which the piston 57 slides, is about 15.
  • a jack 2a, 2b similar to that of FIG. 2 can be used without moving weight to form a pneumatic resistant device for the device, which opposes a vertical downward movement of the movable pulley 21 attached to the end of the rod 2b, when the user moves the operating member 32 according to arrow 101.
  • the flexible link 12 and its fixed 22 and mobile 24 attachments form, with the fixed pulleys 96 and mobile 21, a device for dividing by two of the effort: the resistive effort of the jack is twice that exerted by the user.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Actuator (AREA)
  • Manipulator (AREA)
  • Rehabilitation Tools (AREA)
EP20020358010 2001-05-21 2002-05-15 Übungsgerät mit Pneumatikzylinder Expired - Fee Related EP1260249B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0106692A FR2824741B1 (fr) 2001-05-21 2001-05-21 Appareil de gymnastique a verin pneumatique
FR0106692 2001-05-21

Publications (2)

Publication Number Publication Date
EP1260249A1 true EP1260249A1 (de) 2002-11-27
EP1260249B1 EP1260249B1 (de) 2005-12-21

Family

ID=8863516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020358010 Expired - Fee Related EP1260249B1 (de) 2001-05-21 2002-05-15 Übungsgerät mit Pneumatikzylinder

Country Status (3)

Country Link
EP (1) EP1260249B1 (de)
DE (1) DE60208112T2 (de)
FR (1) FR2824741B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004062743A1 (en) * 2003-01-15 2004-07-29 Greenhouse International Llc Exercise machine
WO2004062740A1 (en) * 2003-01-15 2004-07-29 Greenhouse International Llc Resistance assembly
CN110652696A (zh) * 2019-09-30 2020-01-07 宜春学院 一种多功能体育锻炼健身装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113633925B (zh) * 2021-08-13 2022-05-17 重庆医药高等专科学校 一种康复用墙壁拉力器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2193901A (en) * 1986-08-19 1988-02-24 Wilson Sporting Goods Exercise apparatus
US4826156A (en) * 1986-04-24 1989-05-02 Beat Dreier Exerciser
US5147263A (en) 1990-07-30 1992-09-15 Mueller King L Pneumatic weight lift assist apparatus
FR2686259A1 (fr) * 1992-01-22 1993-07-23 Therond Leon Appareil pour exercices de musculation et procedes pour sa mise en óoeuvre.
EP0878216A1 (de) * 1996-01-11 1998-11-18 Hiroshi Kasuga Trainingsvorrichtung für anstossartige bewegungen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4826156A (en) * 1986-04-24 1989-05-02 Beat Dreier Exerciser
GB2193901A (en) * 1986-08-19 1988-02-24 Wilson Sporting Goods Exercise apparatus
US5147263A (en) 1990-07-30 1992-09-15 Mueller King L Pneumatic weight lift assist apparatus
FR2686259A1 (fr) * 1992-01-22 1993-07-23 Therond Leon Appareil pour exercices de musculation et procedes pour sa mise en óoeuvre.
EP0878216A1 (de) * 1996-01-11 1998-11-18 Hiroshi Kasuga Trainingsvorrichtung für anstossartige bewegungen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004062743A1 (en) * 2003-01-15 2004-07-29 Greenhouse International Llc Exercise machine
WO2004062740A1 (en) * 2003-01-15 2004-07-29 Greenhouse International Llc Resistance assembly
CN110652696A (zh) * 2019-09-30 2020-01-07 宜春学院 一种多功能体育锻炼健身装置

Also Published As

Publication number Publication date
EP1260249B1 (de) 2005-12-21
DE60208112D1 (de) 2006-01-26
FR2824741A1 (fr) 2002-11-22
DE60208112T2 (de) 2006-09-14
FR2824741B1 (fr) 2003-07-04

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