FR2605231A2 - HYDRAULIC SYSTEM APPLIED TO MUSCULATION DEVICES - Google Patents

Abstract

THE PRESENT INVENTION CONCERNS AN IMPROVEMENT MADE TO MAIN PATENT NO. 85 18278 and more particularly to the shock absorber fitted with an adjustment system allowing the flow rate of the fluid flowing through the piston to be modified at each axial displacement. IT CONSISTS OF A CYLINDRICAL TUBE 1 IN SYNTHETIC MATERIAL CLOSED AT BOTH ENDS BY PARTS 2 AND 3. THE PISTON BLOCK 7-SELECTOR 9 FIXED ON THE ROD 5 CAUSES A STRENGTHENING EFFECT ON THE OIL FLOW 16 WHICH IT TRAVERSE. THE POSITION OF THE SELECTOR 9 INCLUDING AN INTERNAL MAGNET 12 IS MODIFIED BY AN EXTERNAL MAGNET 14 HOUSED IN AN ANNULAR RING 15 MOVING BY ROTATION AROUND THE AXIS OF THE TUBE 1. THE DEVICE ACCORDING TO THE INVENTION IS MAINLY INTENDED FOR WEIGHT-TRAINING DEVICES .

Description

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  The present invention relates to an improvement made to the patent

  main brake N 85 18 278 and more particularly to the damper whose function is to brake the spacing then the bringing together of two

  arm of the exerciser thus demanding an expenditure of muscular energy.

  The improvement consists of an adjustment device allowing

  to modulate the braking values of the shock absorber as a function of

  muscular cities of the users.

  The existing adjustable dampers are specially

  for the automotive industry and are not suitable for use

  sports reels. Any modification of their characteristics, clutter

  weight, aesthetics, fastening system, calibration, race, handling

  etc., for adaptation to sports equipment will induce

  prices, already very high despite their industrialization.

  tion, and will cause these products to fail commercially.

  This is why the dampers used by some sports equipment are of the type NOT ADJUSTABLE. They get changes from

  Braking values by moving the attachment point of the damper.

  Distance or approximation relative to the axis of articulation of the lever arm.

  This system does not make it possible to obtain different braking values.

  annuities when the shock absorber works in extension and in compression.

  It requires a tightening and loosening system as well as a

  positive to slide the attachment point of the damper.

  These dampers are designed to operate vertically or in a close position but they defuse when used

  horizontally or upside down and their proper operation is questioned.

  From the foregoing the object of the present invention is to provide a damper with an adjustment system controlled by magnets whose

  magnetic field passes through the non-magnetic body of the damper. This provision

  This modifies the braking values.

  These braking values may be different during work

  in extension and work in compression.

  This shock absorber is particularly intended for sports equipment

  lation makes it possible to modulate the muscular energy expenditure as a function of

  capabilities of different users.

  This device represents a very important improvement

  to the shock absorber represented in the main patent to which the latter

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  is attached and the possibilities for its use are considerably increased.

  lisation. One of the striking features of this invention is that it is used with surprising ease since the adjustment is made by rotating an outer ring, marked with a mark, around the tube provided with an annular scale, each graduation corresponds at a value

  braking. Just present the mark next to a graduqtion.

  The advantage of the present invention is that the device used to

  fluid flow changes are integrated into the body of the device.

  and is not likely to be damaged during the various

  nipulations. This device is not subject to any effort, it is not

  ble and indestructible. its reliability over time is ensured.

  All the parts making up the shock absorber are industrially

  trially by molding and the very low cost prices make it possible

  fusion of this product on a large scale.

  Another important advantage is that it can be used in any position: standing upright, leaning horizontally or upside down

upside down.

  The important advantage that characterizes this invention is that it is

  made entirely of high-strength synthetic material that does not allow

  turbe not the magnetic field and therefore allows a controlled adjustment

by magnets.

  The present invention will be better understood and nonlimited details

  will arise from the description which will be made in

  relation to the figures of plates 1 to 7 annexed in which:

  FIG. 1 is a sectional view of the hydraulic system whose system is

  Adjustment includes two pistons and a selector.

  FIG 2 is a sectional view of the hydraulic system (variant of FIG.

  Figure 1) whose adjustment system comprises a piston and two selectors.

  FIG 3 is a front view of a piston

  FIG 4: is a front view of a selector.

  FIG. 5 is a front view of a flanged ring used in FIG. 1. FIG. 6 is a front view of a flange ring used in FIG.

figure 2.

  FIG 7: is a profile view of the selector showing the

  housing the inner magnet with pipes on the walls.

  In all the figures the same numerical references are used

  used to designate identical or similar elements or

- 3 -

  FIG. 1 represents the hydraulic apparatus which comprises a cylindrical tube () of synthetic material closed at both ends by the

  parts (2) and (3) and are attached to the tube (1) by gluing also

  sealing.or by clips and seals.

  The part (2) is gone at its center, in part, to receive a sealing gasket (6) fixed by gluing.or clipping The rod (5), part of which is out of the damper and the other to the internal coulisse by alternating movements and allows the axial translation of the piston block (7) selector (9). This block is composed of two pistons

  IO0 (7) having at least two orifices (8) each and are placed face to face.

  The spacing corresponds to the selector thickness (9) plus a small space

  it is 1 mm to allow it to tackle both against a piston (7) sometimes against the other. This spacing corresponds exactly to the length of

the muffled ring (11).

  When the block (7-9) moves to the left, the oil in (I6) is

  pushing to the right through the passages (8) of the piston (7), the selec-

  (9) moves inertia to the right and

  second piston (7) which it closes all the orifices (8) except for a correspon-

  to the one facing the orifice (10) of the selector ('). The pistons (7) fig 3 have several orifices (8) allowing the passage

  oil but the selector (9) fig 4 has only one (I0) and provo-

  as a throttling effect on the flow of oil passing through it. The value

  braking force corresponds to the caliber of the orifice (8) of the piston (7) which

puts the oil passage.

  When the block (7) - (9) moves to the right the selector (9) moves by inertia to the left and is pressed against the first

  Fistons (7) and again causes an effect on the flow of oil

  the who crosses it. The braking value corresponds to the caliber of the only

  fice (8) of the piston (7) which allows the passage of oil.

  We thus obtain different braking values when the rod

  (5) returns and when it comes out simply by anticipating different ports (8)

  on each of the two pistons (7) which serve alternately.

  By shifting the orifice (IO) of the selector (9) in front of other passages (8) arranged in the pistons (7), another combination of two is obtained.

oil flow values.

  To rotate the selector (9) in front of the pistons (7),

  in the housing provided for this purpose a magnet (12) comprising

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  inside a pointed toton (13) of such fate that it can both be

  approach to the calf ring (î1) located between the selector (9) and the rod (5) or move away towards the opposite side, ie towards the

  inner face of the cylinder (1) when it is solicited by presenting

  inside the cylinder (1) another magnet (14). These have a natural tendency to attract and simply rotate the outer magnet (14) around the tube (1) for the inner magnet (12) to follow.

  the same movement and consequently turn the selector (9).

  To make this setting stable and foolproof during operation

  of the device, the external magnet (14) is moved away from the

  (12) by sliding it along the tube (1). The magnetic field

  that being interrupted, the inner magnet (12) is attracted by the metal rod

  lique (5) and the pointed stick (13) is placed in the calf ring (11) integral with the rod (5). The magnet (I2) and the selector (9) can no longer pivot about the axis as long as the external magnet (14) does not come

  dislodge the inner magnet (12). The setting is therefore stabilized.

  The outer magnet (14) is embedded in a rigid or flexible ring

  (15) which can slide along the tube (1) and rotate around it.

  The hydraulic apparatus of FIG 2 is a variant of Figure 1 in that it consists of a piston (7) arranged between two selectors (9) Each selector (9) disloses a magnet and can rotate independently one of the other around its axis represented by the rod (5) and the calf ring (11). The operation is identical and offers more combinations of oil flow values. It requires a two-step adjustment; first to position the first selector (9) and then

  to position the second selector (9).

  The piece (15) forms a watertight partition between the part (16)

  ply of oil and the portion (21) containing compressed air, or a spring or gas. The seal is obtained by a seal (18). The air or gas (21) is introduced by a valve (20) and plates the partition (19)

  against the oil and follows the movements of it in function of the pre-

  whether or not the rod (5) whose volume is added to or subtracted from the volume of oil (16), the latter being incompressible. This device pockets the emulsification of the oil (16) and allows the damper to operate in all positions: standing upright, leaning horizontally or upside down. It must be understood that the present invention is not

  not limited to the embodiment described above but that

  tends to all variants or equivalent forms as defined by

the following claims.

Claims (10)

  1. Hydraulic system applied to weight machines operating in extension and in compression according to claim 1 of the main patent characterized in that it comprises a braking cell having an adjusting device consisting of at least one piston (7) whose orifices (8), of different diameters, provide different braking values, and by at least one selector (9) in which is placed a movable magnet (12) provided with a pointed toton (13); the selector (9) rotates around a calf ring (11); an external magnet (14) placed in a rigid or flexible annular ring (15) makes it possible to modify the position of the inner magnet (12), and consequently the selector (9), thanks to the magnetic attraction of the two magnets ( 12) and (14) which is exerted through the tube (1) nonmagnetic high-strength synthetic material that does not disturb the magnetic field; the parts (2) and (3) are fixed at each end of the tube (1); a hydraulic sealing gasket (6) is glued or held by a clip in the workpiece (2) and allows the axial translation of the rod (5) to which are fixed, by a fixing means, a ring   calf (11) and at least one piston (7).   2. Hydraulic system according to claim 1 characterized in that the parts (2) and (3) attached to the two ends of the tube (1) are sealed by gluing also ensuring sealing by O-rings or staples.   3. Hydraulic system according to claim 1 characterized in that the piece (19) forms a bulkhead between the portion (16) filled with oil and the portion (21) containing compressed air, or a spring or the gas; the seal is obtained by an O-ring (18); the air or the gas (21) is introduced by a valve (20) and plates the partition (19) against the oil and follows the movements thereof according to the presence or absence of the rod (5) of which volume is added to or subtracted from   volume of oil (16), the latter being incompressible.   4. Hydraulic system according to claim 1 characterized in that the selector (9) comprises an orifice (10) which allows the passage   forced oil to only one of the orifices (8) of the piston (7).   5. Hydraulic system according to claim 1 characterized in that the selector (9) comprises a housing in which is placed a magnet (12) which must be able to slide, the walls of said housing of   the inner magnet are provided with pipes (24).   6. Hydraulic system according to claim 1 characterized in that the selector (9) moves inertia in the longitudinal direction of the caliper ring and rotates about the axis thereof when the inner magnet (12) is solicited by the magnetic field of the magnet outside (14).   Hydraulic system according to Claim 1, characterized in that the outer magnet (14) is embedded in a rigid or flexible annular ring (15) which moves in the longitudinal direction of the tube (1). and revolves around said tube.   8. Hydraulic system according to claim 1 characterized in that rings (23) are placed on each side of the annular ring (15) and serve as stops limiting the longitudinal stroke of said ring. 9. Hydraulic system according to claim 1 characterized in that the parts (7), (9), (11), (15), (23) and (13) are of synthetic material. 10. Hydraulic system according to claim 1 characterized in that the magnetic field being interrupted, the inner magnet (12) is attracted by the metal rod (5) and the pointed pin (13) is placed in the calf ring ( 11) secured to the rod (5), the magnet (12) and the selector (9) can no longer pivot about the axis as long as the external magnet (14) does not dislodge the inner magnet (12). ), adjustment is therefore stabilized.