WO1987006666A1 - Cellule de resistance au mouvement lineaire amelioree - Google Patents

Cellule de resistance au mouvement lineaire amelioree Download PDF

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Publication number
WO1987006666A1
WO1987006666A1 PCT/AU1987/000122 AU8700122W WO8706666A1 WO 1987006666 A1 WO1987006666 A1 WO 1987006666A1 AU 8700122 W AU8700122 W AU 8700122W WO 8706666 A1 WO8706666 A1 WO 8706666A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
cylinder
disc
linear motion
resistance cell
Prior art date
Application number
PCT/AU1987/000122
Other languages
English (en)
Inventor
Reginald Trethewey
Original Assignee
Comdox No. 70 Pty. Limited
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 Comdox No. 70 Pty. Limited filed Critical Comdox No. 70 Pty. Limited
Publication of WO1987006666A1 publication Critical patent/WO1987006666A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • 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
    • 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
    • A63B21/0083—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 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
    • A63B2209/00—Characteristics of used materials
    • A63B2209/08—Characteristics of used materials magnetic

Definitions

  • the present invention therefore provides a linear motion resistance cell comprising an hydraulic piston and cylinder assembly sealed at both ends and filled with 35 hydraulic fluid, the piston incorporating valve means operable to control the flow of fluid from one side of the piston to the other and hence the resistance to movement
  • valve means comprising a disc rotatable about the axis of the cylinder relative to the piston and incorporating ports moveable into and out of register with ports in the piston, the
  • disc incorporating magnetic poles arranged to align with a magnetic field rotatable about the outside of the cylinder such that the orientation of the disc relative to the piston is controllable by rotation of the magnetic field.
  • the disc incorporates a pair of permanent
  • the magnetic field is similarly formed from a pair of diametrically opposed permanent magnets located in a collar or the like rotatable about the cylinder.
  • the piston is formed from two spaced portions
  • the flow of fluid through the piston is arranged such that reversal of piston movement causes the
  • the ports in the piston and the disc are arranged such that axial movement of the disc between the flanges acts as a non-return valve, opening and/or closing selected ports to the flow of fluid therethrough.
  • the cylinder is provided with a volume compensator arranged to compensate for the decrease in contained volume within the cylinder as the piston is advanced into the cylinder under the influence of an actuation rod.
  • Fig. 1 is a cross-section through the axis of a linear motion resistance cell according to the invention.
  • Fig. 2 is an exploded perspective view to an enlarged
  • Fig. 3 is a cross-sectional view to an enlarged scale of an alternative form of volume compensation apparatus used in the cylinder shown in Fig. 1, and
  • Fig. 4 is a plan view of the compensator shown in Fig. 3.
  • a linear 0 motion resistance cell is formed in the configuration of a hydraulic piston and cylinder assembly having a tubular cylinder wall (1) closed by an upper end cap (2) and a lower end cap (3).
  • the lower end cap (3) is closed and the upper end cap (2) is provided with a seal (30) forming 5 a sliding fit with a piston actuation rod (9).
  • the end caps (2) and (3) are conveniently held in place on the cylindrical tube (1) by way of tie rods (14) and (.15).
  • the piston actuation rod (9) is arranged to support and actuate a piston for linear movement within the 0 cylinder.
  • the piston is formed in two halves in the form of an upper flange (6) and a lower flange (7) interconnected by a central spigot (31) ( Figure 2) engageable about a reduced end portion (32) on the actuation rod (9) and held in place by a threaded nut
  • the spigot (31) is formed from a first half downwardly depending from the flange (6) and a second half upwardly depending from the flange (7), and that the mating faces of the two spigot halves are offset as shown in Figure 1 to maintain the two halves of the
  • the piston is further provided with a valve disc (8) located between the flanges (6) and (7) and being of such thickness that there is an axial clearance between the
  • the component (8) in fact also comprises upper and lower flanges or faces (34) and
  • the disc or valve block (8) is rotatable about the axis (36) of the piston and cylinder assembly and is controlled in its rotation by a pair of permanent magnets inserted into diametrically opposed slots (10) and (11) on
  • the cylinder (1) is also provided with a pair of elongate diametrically opposed permanent magnets (12) and (13) on the outer surface of the cylinder arranged so that the permanent magnets may be rotated relative to the cylinder (1).
  • the permanent magnets (12) and (13) may be located in an outer sleeve or may be supported in any other convenient manner.
  • the outer magnets (12) and (13) can be conveniently manipulated by the user of the linear motion resistance cell to rotate the magnets relative to
  • valve block (8) can float axially relative to the piston, flow of fluid through the ports in the piston serves to force the valve block against the
  • the cut-out gate (17) is arranged to provide a clear opening to any of the ports (18), (19), (20) or (21) when aligned therewith, but the restriction gates (15) and (16) have spiral inner edges arranged such that the inner edge progressively closes an aligned port during rotation of the disc (8) relative to the piston over the arc of the restriction ports. In this manner the degree of resistance to the flow of fluid through a port aligned 0- with the restriction gates (15) or (16) may be controlled by rotation of the disc using the magnets (12).
  • valve block within the piston has been designed to achieve the same three types of selectable resistance to movement as those described in
  • valve block (8) are rotated so that valve block (8) rotates until the restriction gates (15) and (16) align with ports (18) and (20).
  • valve block (8) engages with the inner face of the upper piston half (6) thus sealing port (19). Fluid is then forced to travel past the restriction gate (15) into port (18). At the same time the lower face of valve block (8) disengages with the inner face of the lower piston
  • valve block (8) engages with the inner face of the lower piston half (7) thus sealing port (21). Fluid is then forced to travel past the restriction gate (16) into port (20). At the same time the upper face of valve block
  • valve block (8) In this mode valve block (8) is rotated so restriction gate (16) aligns with port (21).
  • valve block (8) engages with the inner face of lower piston half (7) thus sealing port (20). Fluid is then
  • valve block (8) disengages with the inner face of the upper piston half (6). allowing fluid to be introduced through ports (18) and (19).
  • valve block (8) disengages with the inner face of lower piston half (7) allowing fluid to be introduced through ports (20) and (21).
  • the upper face of valve block (8) engages with the inner face of the upper piston half (6)
  • Valve block (8) is rotated so restriction gate (15) aligns with port (19) and the operation is the reverse of the previous mode.
  • the cylinder is also supplied with a floating piston (4) to allow for internal volume changes due to the
  • 4037S/rs floating piston (4) is loaded by a powerful spring (5). Because the cross-sectional area of the shaft (9) is about one sixteenth the area of the piston halves (6) and (7) it is relatively easy to compress the spring (5) by introducing more of the shaft (9) into the cylinder.
  • valve block (8) is adjusted so no fluid can pass from the lower side of the piston half (7) to the upper side of the piston half (6), then the shaft load required to compress spring (5) is very high.
  • the action 0 of the floating piston (4) and the spring (5) form a return mechanism that causes the cylinder to attain its extended position when unloaded.
  • volume compensation apparatus works well to compensate for volume 5 changes due to the introduction of the actuation rod (9) into the cylinder it has been found in practice that the floating piston (4) and spring (5) can introduce unacceptable levels of sponginess in the down pressure stroke of the cylinder shaft.
  • a sealed, air filled, plastic bladder (29) is contained in the space (25) on the lower side of the valved piston (22).
  • On the lower surface of the O-ring groove (28) is a plurality of small holes (26) that communicate with the space (25).
  • O-ring (23) prevents oil flow between the valved piston (22) and the cylinder (1).

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)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)

Abstract

Une cellule de résistance au mouvement linéaire, particulièrement appropriée pour être utilisée sur un exerciseur comprend un ensemble à piston hydraulique (6, 7) et à cylindre (1) rempli de fluide hydraulique et pourvu d'orifices réglables ménagés dans le piston entre un disque rotatif (8) et les embases (6) et (7) du piston. Les orifices sont ouverts et fermés par rotation du disque (8) par rapport au piston, actionné par des paires d'aimants (10, 11) diamétralement opposées, disposées dans le disque et alignées sur des paires d'aimants correspondantes (12, 13) disposées dans un anneau à l'extérieur dudit cylindre (1).
PCT/AU1987/000122 1986-04-30 1987-04-30 Cellule de resistance au mouvement lineaire amelioree WO1987006666A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU567186 1986-04-30
AUPH5671 1986-04-30

Publications (1)

Publication Number Publication Date
WO1987006666A1 true WO1987006666A1 (fr) 1987-11-05

Family

ID=3696152

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1987/000122 WO1987006666A1 (fr) 1986-04-30 1987-04-30 Cellule de resistance au mouvement lineaire amelioree

Country Status (2)

Country Link
EP (1) EP0265458A1 (fr)
WO (1) WO1987006666A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0521037A1 (fr) * 1990-03-22 1993-01-07 John Charles Thornton Exerciseur.
GB2283075A (en) * 1993-10-23 1995-04-26 Ford Motor Co Hydraulic damper
FR2955261A1 (fr) * 2010-01-18 2011-07-22 Sveltus Pompe / verin pour dispositif destine a faire travailler simultanement des muscles antagonistes, comportant essentiellement un verin a eau ou autre fluide capable de travailler en traction puis en compression, dispositif correspondant comportant des moyens de contact avec le corps ou de manoeuvre, ledit dispositif et applications correspondantes en gymnastique, musculation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB458895A (en) * 1935-05-27 1936-12-29 Louis Bechereau Improvements in telescopic shock absorbers
GB460851A (en) * 1935-07-31 1937-02-01 Noel Banner Newton Improvements in or relating to piston-type hydraulic shock absorbers
FR1294113A (fr) * 1960-07-08 1962-05-26 Tatra Np Soupape d'amortissement électromagnétique pour véhicules automobiles
US3152665A (en) * 1960-12-01 1964-10-13 Armstrong Patents Co Ltd Adjustable hydraulic shock absorbers
EP0135346A2 (fr) * 1983-08-12 1985-03-27 Horng Meei Spring Enterprise Co., Ltd. Appareil d'exercice
AU4297385A (en) * 1984-04-24 1985-11-15 Comdox No. 70 Pty. Ltd. Linear motion resistance cell
GB2164120A (en) * 1984-09-04 1986-03-12 Boge Gmbh An adjustable damping valve for a hydraulic vibration damper

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB458895A (en) * 1935-05-27 1936-12-29 Louis Bechereau Improvements in telescopic shock absorbers
GB460851A (en) * 1935-07-31 1937-02-01 Noel Banner Newton Improvements in or relating to piston-type hydraulic shock absorbers
FR1294113A (fr) * 1960-07-08 1962-05-26 Tatra Np Soupape d'amortissement électromagnétique pour véhicules automobiles
US3152665A (en) * 1960-12-01 1964-10-13 Armstrong Patents Co Ltd Adjustable hydraulic shock absorbers
EP0135346A2 (fr) * 1983-08-12 1985-03-27 Horng Meei Spring Enterprise Co., Ltd. Appareil d'exercice
AU4297385A (en) * 1984-04-24 1985-11-15 Comdox No. 70 Pty. Ltd. Linear motion resistance cell
GB2164120A (en) * 1984-09-04 1986-03-12 Boge Gmbh An adjustable damping valve for a hydraulic vibration damper

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, M-223, page 156, JP, A, 58-81245 (Kayaba Kogyo K.K.) 16 May 1983 (16.05.83) *
PATENT ABSTRACTS OF JAPAN, M-224, page 148, JP,A 58-57534 (KAYABA KOGYO K.K.) 5 April 1983 (05.04.83) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0521037A1 (fr) * 1990-03-22 1993-01-07 John Charles Thornton Exerciseur.
EP0521037A4 (fr) * 1990-03-22 1994-03-16 John Charles Thornton
GB2283075A (en) * 1993-10-23 1995-04-26 Ford Motor Co Hydraulic damper
FR2955261A1 (fr) * 2010-01-18 2011-07-22 Sveltus Pompe / verin pour dispositif destine a faire travailler simultanement des muscles antagonistes, comportant essentiellement un verin a eau ou autre fluide capable de travailler en traction puis en compression, dispositif correspondant comportant des moyens de contact avec le corps ou de manoeuvre, ledit dispositif et applications correspondantes en gymnastique, musculation
WO2011086460A3 (fr) * 2010-01-18 2011-09-29 Sveltus Sarl POMPE / VÉRIN POUR DISPOSITIF DESTINÉ À FAIRE TRAVAILLER SIMULTANÉMENT DES MUSCLES ANTAGONISTES, COMPORTANT ESSENTIELLEMENT UN VÉRIN À EAU OU AUTRE FLUIDE CAPABLE DE TRAVAILLER EN TRACTION PUIS EN COMPRESSION, DISPOSITIF CORRESPONDANT COMPORTANT DES MOYENS DE CONTACT AVEC LE CORPS OU DE MANœUVRE, LEDIT DISPOSITIF ET APPLICATIONS CORRESPONDANTES EN GYMNASTIQUE, MUSCULATION

Also Published As

Publication number Publication date
EP0265458A1 (fr) 1988-05-04

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