WO1987006481A1 - Mecanisme de liaison pour l'actionnement d'une cellule de resistance au mouvement lineaire - Google Patents

Mecanisme de liaison pour l'actionnement d'une cellule de resistance au mouvement lineaire Download PDF

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Publication number
WO1987006481A1
WO1987006481A1 PCT/AU1987/000124 AU8700124W WO8706481A1 WO 1987006481 A1 WO1987006481 A1 WO 1987006481A1 AU 8700124 W AU8700124 W AU 8700124W WO 8706481 A1 WO8706481 A1 WO 8706481A1
Authority
WO
WIPO (PCT)
Prior art keywords
shafts
linkage
actuation
support frame
crank arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/AU1987/000124
Other languages
English (en)
Inventor
Reginald Trethewey
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.)
Comdox No 70 Pty Ltd
Original Assignee
Comdox No 70 Pty Ltd
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 Ltd filed Critical Comdox No 70 Pty Ltd
Publication of WO1987006481A1 publication Critical patent/WO1987006481A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • A63B21/008—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
    • 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

Definitions

  • TECHNICAL FIELD This invention relates to an actuation linkage for a linear motion resistance cell and has been devised particularly though not solely for use with the linear motion resistance cell described in our copending International patent application PCT/AU85/00090.
  • the present invention is directed to an improved form of apparatus for containing the linear motion resistance cell and providing the actuation linkage for that form of synchronized opposed movement of a pair of lever arms.
  • the invention consists in an actuation linkage for a linear motion resistance cell in the form of an hydraulic piston and cylinder assembly, said linkage comprising a pair of spaced apart parallel shafts rotatably mounted in a support frame and provided with engagement means for engagement with lever type handles, connecting means between said shafts coupling said shafts together such that the two shafts rotate in synchronism in opposite directions, and a crank-type linkage from at least one of the shafts to the actuation rod of the hydraulic piston and cylinder assembly, causing the rod to move linearly within the cylinder upon rotation of the shafts.
  • crank-type linkage comprises a primary crank arm extending radially from one of the shafts and being connected to the actuation rod at its outer end.
  • connecting means between the shafts comprises a secondary crank arm on the second shaft connected to the primary crank arm on the first shaft by way of a connecting rod.
  • the connecting means between the shafts comprises a gear train connected between the shafts.
  • Fig. 1 is a side view of an actuation linkage for a linear motion resistance cell according to the invention, showing the support frame in ghost outline for clarity.
  • Fig. 2 is a similar view to Fig. 1 to a reduced scale, fully showing the support frame, and
  • Fig..3 is an end view of the apparatus shown in Fig. 2, showing the alternative position of the apparatus in broken outline. MODES FOR CARRYING OUT THE INVENTION
  • a linear motion resistance cell in the form of an hydraulic piston and cylinder assembly (16) is mounted in a support frame (7) by way of a mounting pin (20).
  • the piston and cylinder assembly is operable by an actuation rod (21) for linear movement within the cylinder (16) in the normal manner.
  • the support frame (7) comprises a pair of side plates (22) and (23) (Fig. 3) separated by end plates (24) and (25) to form a rectangular box in which the linear motion resistance cell (16) and the actuation linkage therefor is located.
  • the support frame may be provided with a cut away portion (26) allowing access to a control ring (27) on the linear motion resistance cell for control of the operation of that resistance cell.
  • the actuation linkage comprises a first shaft (11) rotatably mounted in bearings between the side plates (22) and (23) and a second shaft (12) similarly mounted and located vertically below the first shaft (11).
  • the shafts may take any convenient form but are preferably provided with splined sockets (28) for engagement with similarly splined shafts on the ends of lever arms used with the exercise apparatus.
  • the first shaft (11) is provided with a first crank arm (13) mounted on the shaft for rotation therewith and coupled to the actuation rod (21) of the linear motion resistance cell by way of a crank pin (29). Rotation of the first shaft (11) under the operation of one or more lever arms engaged therewith causes the crank arm (13) to rotate and the actuation rod (21) to be forced into and/or out of the cylinder (16).
  • the second shaft (12) is also provided with a second crank arm (14) interconnected with the first crank arm
  • crank arms (13) by way of a connecting rod (15) coupled to the crank arms by crank pins (30) and (31) respectively.
  • the two crank arms are orientated relative to each other as shown in Figure 1 and the distance from the crank pin (31) to the axis of the shaft (11) is the same as the distance from the crank pin (30) to the axis of the shaft (12).
  • rotation of one of the shafts (11) or (12) causes rotation of the other shaft in synchronisation in the opposite direction.
  • the crank arms (13) and (14) to each be orientated at the same angle to the "centreline" joining the axes of the two shafts, although spaced on opposite sides of that centreline.
  • Both shafts are also coupled either directly or indirectly to the actuation rod (21) of the linear motion resistance cell so that engagement of the exercise machine lever arras with either of the shafts (11) or (12) can be used for operation of the machine.
  • the main support frame (7) is coupled to a mounting frame (5) by way of a horizontal pivot pin (8) and the orientation of the main frame (7) relative to the support frame (5) is controlled by a locking pin (10) which is engageable in two positions so that the main frame can assume either a vertical position as shown in solid outline in Figures 2 and 3 or a horizontal position as shown in broken outline in Figure 3.
  • the support frame (5) is in turn adapted to be engaged with a vertical post (not shown) on the exercise machine and to this end the support frame is provided with a rubber pad (6) arranged to fit against one side of the post, and a clamp pad (3) operable by a cam (2) about a pivot pin (4) in the support frame under the influence of actuation clamping handle (1).
  • the clamping handle (1) When the clamping handle (1) is raised to a horizontal position, the pad (3) moves away from the vertical surface of the post, releasing the support frame and allowing the support frame to move vertically upwards and downwards to a desired position on the post. Once that desired position has been reached the handle (1) is pivoted downwardly moving the clamp pad (3) into clamping engagement with the surface of the post and securely clamping the support frame in position between the face of the clamp pad (3) and the rubber pad (6).
  • the support frame is moved to the desired vertical position on the support post as described above and the lever arms engaged with the shafts (11) and/or (12) for the desired form of exercise.
  • the lever arms may be engaged with opposite ends of the shaft (11) so that the arms are aligned and can be rotated together by the user.
  • the support frame is firstly rotated to the horizontal position (32) and locked in place by the locking pin (10).
  • the two lever arms may then be engaged with the first and second shafts (11) and (12) respectively, on the same side of the main frame (7) so that the two lever arms may be rotated in opposite directions in synchronization against the resistance of the linear motion resistance cell (16).
  • an actuation linkage for a linear motion resistance cell is provided which enables the cell to be used in an exercise machine in a convenient manner allowing the machine to be readily adapted between operation by parallel lever arms in the same direction, or in a rowing type exercise for operation by two spaced apart lever arms rotated in synchronization in opposite directions.

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)
  • Rehabilitation Tools (AREA)

Abstract

Dans un mécanisme de liaison pour l'actionnement d'une cellule de résistance (16) au mouvement linéaire conçue particulièrement pour être utilisée dans un exerciseur, des poignées en forme de levier présentant des extrémités cannelées peuvent s'engager dans chacun des deux côtés d'emboîtures cannelées (28) placées sur des arbres (11) et (12). Le mécanisme de liaison (13, 14, 15) situé entre les arbres (11) et (12) assure un mouvement de contre-rotation synchrone entre les arbres, permettant un mouvement de rameur lorsque les leviers s'engagent dans les emboîtures (28) sur le même côté du cadre de support (7) orienté horizontalement. Le cadre de support (7) peut pivoter autour d'une goupille (8) pour occuper une position verticale et les bras de levier peuvent s'engager dans les côtés opposés de l'arbre (11) pour d'autres types d'exercices.
PCT/AU1987/000124 1986-04-30 1987-04-30 Mecanisme de liaison pour l'actionnement d'une cellule de resistance au mouvement lineaire Ceased WO1987006481A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPH5670 1986-04-30
AU567086 1986-04-30

Publications (1)

Publication Number Publication Date
WO1987006481A1 true WO1987006481A1 (fr) 1987-11-05

Family

ID=3696148

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1987/000124 Ceased WO1987006481A1 (fr) 1986-04-30 1987-04-30 Mecanisme de liaison pour l'actionnement d'une cellule de resistance au mouvement lineaire

Country Status (1)

Country Link
WO (1) WO1987006481A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2032303A (en) * 1934-12-04 1936-02-25 Orgitano Nick Exercising machine
AU2998684A (en) * 1983-06-29 1985-01-03 Paul Wurth S.A. Mechanism for actuating a proportioning valve
AU3509384A (en) * 1983-09-30 1985-04-23 Hydra-Gym Athletics Inc. Shoulder exercising device
US4514129A (en) * 1981-04-03 1985-04-30 Paul Wurth S.A. Furnace charging installation
AU4297385A (en) * 1984-04-24 1985-11-15 Comdox No. 70 Pty. Ltd. Linear motion resistance cell

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2032303A (en) * 1934-12-04 1936-02-25 Orgitano Nick Exercising machine
US4514129A (en) * 1981-04-03 1985-04-30 Paul Wurth S.A. Furnace charging installation
AU2998684A (en) * 1983-06-29 1985-01-03 Paul Wurth S.A. Mechanism for actuating a proportioning valve
AU3509384A (en) * 1983-09-30 1985-04-23 Hydra-Gym Athletics Inc. Shoulder exercising device
AU4297385A (en) * 1984-04-24 1985-11-15 Comdox No. 70 Pty. Ltd. Linear motion resistance cell

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