EP4122553A1 - Équipement pneumatique pour l'entraînement physique - Google Patents

Équipement pneumatique pour l'entraînement physique Download PDF

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Publication number
EP4122553A1
EP4122553A1 EP22020354.1A EP22020354A EP4122553A1 EP 4122553 A1 EP4122553 A1 EP 4122553A1 EP 22020354 A EP22020354 A EP 22020354A EP 4122553 A1 EP4122553 A1 EP 4122553A1
Authority
EP
European Patent Office
Prior art keywords
cable
rotational shaft
pneumatic actuator
pulley
air
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.)
Pending
Application number
EP22020354.1A
Other languages
German (de)
English (en)
Inventor
Filippo DOLCI
Virginia DOLCI
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.)
Lite Sport Srl
Original Assignee
Lite Sport Srl
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 Lite Sport Srl filed Critical Lite Sport Srl
Publication of EP4122553A1 publication Critical patent/EP4122553A1/fr
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/15—Arrangements for force transmissions
    • A63B21/151—Using flexible elements for reciprocating movements, e.g. ropes or chains
    • A63B21/154—Using flexible elements for reciprocating movements, e.g. ropes or chains using special pulley-assemblies
    • A63B21/155—Cam-shaped pulleys or other non-uniform pulleys, e.g. conical
    • 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
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/15—Arrangements for force transmissions
    • A63B21/151—Using flexible elements for reciprocating movements, e.g. ropes or chains
    • A63B21/153—Using flexible elements for reciprocating movements, e.g. ropes or chains wound-up and unwound during exercise, e.g. from a reel
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/50—Force related parameters
    • A63B2220/56—Pressure

Definitions

  • pneumatic equipment in which the resistance the user encounters to perform exercise is determined by the compression of a pneumatic actuator, the main components of which include a cylinder, a piston and a piston rod.
  • the compression of the pneumatic actuator occurs when the piston moves inside the cylinder due to the motion of the piston rod.
  • Pneumatic training equipment generally consists of a pneumatic actuator, which may be connected to an air tank and which, through the operation of a valve system, is able to increase the pressure by drawing air from a source of compressed air or to reduce the pressure by dispersing air into the atmosphere. This pressure regulation thus makes it possible to change the force required to compress the pneumatic actuator, which increases as the pressure inside the cylinder of the actuator increases.
  • the top of the piston rod has attached to it a pulley, on which passes a cable, having one end anchored to a fixed point of the equipment, and having a second end passing on a second pulley so that it can be pulled in different directions by the user and so that the pneumatic actuator can be compressed for a length equal to twice its maximum stroke, corresponding to the complete movement of the piston inside the cylinder.
  • the cable passing over the pulley of the piston rod is anchored at one end to a fixed point of the apparatus and at the opposite end to a pulley block through which passes a second cable which, when pulled by the user, compresses the pneumatic actuator due to the motion of the cable passing over the pulley of the piston rod.
  • the purpose of the hoist is to further increase the length of the cable pulled by the user to compress the pneumatic actuator, using the systems described in patents WO 93/14822 and US7172538B2A1 , the length of the cable pulled by the user, for construction practicality reasons, is not more than 8 times the stroke of the pneumatic actuator. This is a limitation for performing exercises such as sprints and changes of direction against resistance, which are critical for improving sports performances, but which generally require resistance cables longer than 20 meters.
  • the first purpose of the present invention is to make the resistance offered by a pneumatic actuator also applicable to the performance of exercises such as sprints and changes of direction where a cable greater than 20 meters is required.
  • a second purpose of the present invention is to also make constant the resistance generated by a pneumatic actuator throughout the pull of the cable being operated by the user to perform out exercises.
  • the force required to compress a pneumatic actuator generally increases progressively as the compression of the air (and thus the pressure) inside the pneumatic actuator increases.
  • the present invention achieves the first purpose by attaching one end of the cable passing over the pulley on the piston rod of the pneumatic actuator to a rotational shaft, preferably mounted on two bearings bolted within the equipment, and attaching to the rotational shaft a larger-diameter pulley wheel about which a second cable is wound with one end free to be pulled to perform exercise.
  • the user performs the exercise by pulling the cable wound on the pulley wheel so as to set the rotational shaft in rotation, which winds the cable passing over the pulley bound to the piston rod about itself, thus compressing the pneumatic actuator.
  • the length of the cable pulled by the user to perform exercise is thus equal to the length of the stroke of the pneumatic actuator multiplied by two as a result of the first passage of the cable over the pulley of the piston rod on the actuator, and further multiplied by the ratio between the diameter of the pulley wheel on which the cable pulled by the user is wound and the diameter of the shaft on which the cable passing over the pulley on the piston rod is wound.
  • a 20-metre-long cable can be obtained to perform exercise.
  • the second purpose is achieved by making the rotational shaft, about which the cable passing over the pulley on the piston rod of the pneumatic actuator is wound, conical in shape with decreasing diameter.
  • the ratio between the diameter of the shaft about which the cable passing over the pulley on the piston rod is wound and the diameter of the pulley wheel about which the cable pulled by the user is wound becomes more and more favourable for pulling, compensating for the increase in resistance generated by the growth of pressure inside the pneumatic actuator during its compression.
  • the present invention concerns a physical training apparatus comprising a supporting structure (100) onto which is attached a pneumatic actuator (101), comprising a piston rod (102), connected by an air pipe to a source of compressed air (104), such as a compressor, being preferably interposed an air tank (103) between the pneumatic actuator (101) and the source of compressed air (104). Between the air tank (103) and the source of compressed air (104) is interposed a pressure regulation system, which is composed of two valves, one for the inlet (105a) and one for the outlet (105b) of air.
  • the inlet valve (105a), when open, allows air to flow from the source of compressed air (104), with increased pressure, to the system comprising the air tank (103) and the pneumatic actuator (101), increasing its pressure.
  • the outlet valve (105b), when open, allows the pressure within the same system to decrease by dispersing air into the atmosphere.
  • a pressure sensor (106), such as an electronic pressure transmitter, is connected to the pneumatic actuator (101) to measure the change in pressure within the pneumatic actuator (101) itself.
  • fixed pulley means a pulley animated by rotary motion only, which does not change its coordinates in space
  • mobile pulley means a pulley that, in addition to rotating, also moves in space, for example in a vertical direction.
  • Attached to the outer end of the piston rod (102) of the pneumatic actuator (101) is a mobile pulley (107) on which passes a first cable (108) with a first end (109a) anchored to the supporting structure (100) and a second end (109b) attached to a rotational shaft (110), which is in turn preferably mounted on two bearings (111a; 111b) that are also bolted to the supporting structure (100).
  • the rotational shaft (110) is integral with a fixed pulley (112), with a diameter greater than the diameter of the rotational shaft (110), on which a second cable (113) having one end (114) free to be pulled to perform exercise is attached and freely windable.
  • the piston rod (102) When not in use, the piston rod (102) is kept ejected by the pressure present inside the pneumatic actuator (101); the first cable (108) passing over the mobile pulley (107) on top of the piston rod (102) is taut and unwound from the rotational shaft (110); and the second cable (113) attached to the fixed pulley (112) is wound around it.
  • Two further pulleys (115a; 115b) can also be attached to the supporting structure (100), the first pulley (115a) attached to the supporting structure (100) frontally to the fixed pulley (112), and the second pulley (115b) freely slidable along a guide mechanism (116) also fixed to the supporting structure (100) perpendicularly to the axis of the fixed pulley (112).
  • This latter pulley (115b) can be locked using an appropriate locking system (117), for example with a positioning plunger, at different heights on the guiding mechanism (116), so as to change the point from which the user can pull the end (114) of the second cable (113) to perform the exercise.
  • an appropriate locking system for example with a positioning plunger, at different heights on the guiding mechanism (116), so as to change the point from which the user can pull the end (114) of the second cable (113) to perform the exercise.
  • the rotational shaft (110) about which the first cable (108) passing over the piston rod (102) is wound is conical in shape.
  • the ratio between the diameters of the rotational shaft (110) and the fixed pulley (112), on which the second cable (113) pulled by the user is wound varies, becoming more favourable to be pulled by the user by counterbalancing the increase in resistance that must be overcome to compress the pneumatic actuator (101).
  • the source of compressed air (104) is connected to the actuator (101) and the air tank (103) through a tube equipped with an appropriate two-way T-joint (121), which makes it possible, through the operation of an appropriate valve (122), to shut off the passage of air into the air tank (103) and to make the source of compressed air (104) communicate only with the pneumatic actuator (101).
  • the first cable (108) is guided by a special pulley system (123a, 123b, 123c, 123d), which acts as a hoist to double once more the length of the first cable (108) to be wound about the rotational shaft (110) to compress the pneumatic actuator (101) and, consequently, to increase the length of the second cable (113) wound about the fixed pulley (112) that must be pulled to cause the first cable (108) be wound about the rotational shaft (110).
  • a special pulley system 123a, 123b, 123c, 123d
  • Figure 5 schematically shows an alternative pressure regulation system interposed between the air tank (103) and the source of compressed air (104), which enables the pressure inside the pneumatic actuator (101) to be configured by means of a piloted pressure regulator (124) controlled by an air inlet valve (125a) and an air outlet valve (125b) operable using two respective buttons (126a; 126b).
  • a piloted pressure regulator (124) controlled by an air inlet valve (125a) and an air outlet valve (125b) operable using two respective buttons (126a; 126b).
  • buttons (126a; 126b) thus allow an increase or decrease of the pressure within the system comprising the pneumatic actuator (101) and the air tank (103) by allowing air to flow from the source of compressed air (104) or by dispersing it outwards to decrease pressure.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Actuator (AREA)
EP22020354.1A 2021-07-23 2022-07-22 Équipement pneumatique pour l'entraînement physique Pending EP4122553A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202100019778 2021-07-23

Publications (1)

Publication Number Publication Date
EP4122553A1 true EP4122553A1 (fr) 2023-01-25

Family

ID=80119205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22020354.1A Pending EP4122553A1 (fr) 2021-07-23 2022-07-22 Équipement pneumatique pour l'entraînement physique

Country Status (1)

Country Link
EP (1) EP4122553A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387843A (en) * 1964-08-19 1968-06-11 Lloyd E. Chandler Exercise machine in which the user pushes or pulls against a resisting force produced by a pneumatic cylinder operating in conjunction with compressed air
US4257593A (en) 1977-12-20 1981-03-24 Keiser Corporation Pneumatic exercising device
US4603855A (en) * 1981-01-02 1986-08-05 Sebelle Leslie W Variable exercise apparatus
GB2240727A (en) * 1990-02-07 1991-08-14 Tunturipyoerae Oy Pull exercise device
WO1993014822A1 (fr) 1992-01-22 1993-08-05 Therond Leon Appareil pour exercices de musculation et procede pour sa mise en ×uvre
US20030115955A1 (en) * 2001-11-13 2003-06-26 Keiser Dennis L. Exercise apparatus
US20100179035A1 (en) * 2009-01-12 2010-07-15 Eric Scott Carnahan Multipurpose Exercise Machine Utilizing Vacuum Springs
US20160121156A1 (en) * 2014-10-31 2016-05-05 James Christopher Bach Exercise device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387843A (en) * 1964-08-19 1968-06-11 Lloyd E. Chandler Exercise machine in which the user pushes or pulls against a resisting force produced by a pneumatic cylinder operating in conjunction with compressed air
US4257593A (en) 1977-12-20 1981-03-24 Keiser Corporation Pneumatic exercising device
US4603855A (en) * 1981-01-02 1986-08-05 Sebelle Leslie W Variable exercise apparatus
GB2240727A (en) * 1990-02-07 1991-08-14 Tunturipyoerae Oy Pull exercise device
WO1993014822A1 (fr) 1992-01-22 1993-08-05 Therond Leon Appareil pour exercices de musculation et procede pour sa mise en ×uvre
US20030115955A1 (en) * 2001-11-13 2003-06-26 Keiser Dennis L. Exercise apparatus
US7172538B2 (en) 2001-11-13 2007-02-06 Keiser Corporation Exercise apparatus
US20100179035A1 (en) * 2009-01-12 2010-07-15 Eric Scott Carnahan Multipurpose Exercise Machine Utilizing Vacuum Springs
US20160121156A1 (en) * 2014-10-31 2016-05-05 James Christopher Bach Exercise device

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