DE102005051674A1 - Pulling apparatus for use in e.g. rehabilitation device, for muscle exercise, has cable control arrangement with hanging devices for exercising ends that applies pulling power to arms or legs, where power is transmitted to output of motor - Google Patents

Abstract

The apparatus has an equivalent producing device with an electric motor (1) that is designed as a three phase alternating current motor, where the motor has an output (3) that works together with an exercising organ present at an exercising end. A control device is prearranged at the motor, and the exercising organ has a cable control arrangement with two hanging devices for the exercising ends, where pulling power is applied to arms or legs by the exercising ends and is transmitted to the output.

Description

The The invention relates to a training device according to the preamble of Patent claim 1.

at such exercise equipment the drag is not over Provided weights, but via an electric motor one directed against the performance applied by the trainee Compensation. In general, the engine is over a Motor control adjusted so that the output power of a by a training program predetermined target performance corresponds. In such training devices let yourself Adjust the engine power and / or speed so that the load of the exerciser in the concentric and the eccentric phase of movement the same height or - according to one predetermined training program - varies.

Examples of such training devices can be found in our own patent application DE 10 2004 033 074, the EP 08 53961B1 , as well as the FR 2 709 067A1 ,

Advantageous are such devices especially when used in rehabilitation facilities and in the Disabled Sports. Because there it is often the case that the patients Although often unable to actively perform a movement with high power, but on the other hand a same high holding force often can apply easily. The Motor control of such training devices can accordingly so be set that in the concentric or active phase to overcome only a small drag is, in the eccentric or Rückbewegungsphase but a larger one. there can be specific Settings are stored on a chip card, which has a corresponding card reader engine control available.

Previous training equipment This type have a substantially by that of the motor shaft coupled, more or less rigid exercise organ predetermined movement of the to be performed by the trainee Movement on, which is definitely desirable for certain exercises. However, especially in the field of rehabilitation, it is often desirable to with free, i. unguided, not through the device train rigidly predetermined movements, as it is often on it arrives, certain motor skills to exercise and not specific muscle groups. Free movements can be carried out by the exerciser according to their own abilities, that the use of impaired muscle groups by the Use of other muscle groups is replaced.

Farther are known classical traction devices, which are conventional in a frame vertically guided Have weight plates that the trainees on a or two cables can be pulled up. The cable (s) are at one with the weights or a sled in which the Weights are included, connected and mounted on an upper-side cross-frame element Deflection pulleys deflected so that the other end of the rope for the trainee is tangible. The cable (s) can operated there with one arm or two arms be, depending on the desired Training exercise.

adversely in traction apparatuses of this genus it is, however, that in the pulling phase the actual train weight, namely the weight of the weight plates plus the frictional force of all friction points, is greater than in the retreat phase, in the actual Draw weight the weight of the weight plates minus the frictional force of all friction points equivalent. Because of the lower loads of the exerciser in the eccentric or retreat phase as in the concentric or pulling phase can be the desired training load no over keep the entire cycle constant.

Therefore the object of the invention is to develop a generic training device in such a way that that too when running from free movements an optimal training result can be achieved can.

These The object is achieved with the features of claim 1.

According to the invention is this the training device designed as a pulling apparatus for applying a pulling power. To is a cable arrangement with two gripping possibilities or suspension devices for the trainees provided, which is connected to the output of the electric motor and over the trainer's traction either with one or both Arms or legs can be applied to the output of the electric motor is.

Characterized in that on the one hand as an exercise organ a cable arrangement and on the other hand as a counter power generating device a controlled electric motor used, it is possible that free movements can be trained with the exercise device according to the invention and on the other hand, the requested performance or given by the engine consideration also specified variable during the pulling movement can be. Thus, the common prejudice is overcome that motor-driven exercise equipment operated only with rigid exercise organs and thus guided movements you can.

When Electric motor can serve a linear motor, the cable arrangement can attack on a driven by the linear motor carriage. However, a motor with rotating output or motor shaft is preferred, for example, a three-phase motor.

The Cable arrangement can, for example, in a pulling direction out Attack rack, which arranged with a on the motor shaft Gear is engaged. Also conceivable would be a on the motor shaft be coiled rope or a wound on the motor shaft chain, the other end is connected to the cable arrangement.

When However, a particularly suitable with the cable arrangement connected endless member, which is about the motor shaft and a reversed wave spaced therefrom is looped, in particular with a wrap angle of about 180 °. With the Endloslos or -band, a smooth running on the motor shaft can be ensured. Also for power transmission members to be wound up occurring winding faults (e.g., unknown winding lengths and Slopes), and a consequent malfunction, e.g. Motor malfunction due to length differences between a detected train length coordinate and the actual Point in the train movement, can reliable be prevented. The distance between motor shaft and reversing shaft thus gives the maximum way that a point on the endless member can be moved translationally and thus - on the suspension of the Cable arrangement on the Endllosglied or -band - the maximum length of the with the training device executable Pull movement.

If the cable arrangement is further arranged so that the direction of action the over the cable arrangement applied to the endless member tensile power the direction of movement of the endless member corresponds, is the of Trained performance is thus reduced to low friction losses lossless on the endless belt and thus transferred to the motor shaft, without initiating the lateral force components on the frame of the exerciser become. It comes thus neither to jamming nor to an undesirable Load the device in the transverse direction to the desired effective direction. The ones from Trainers to be applied performance is therefore always the Power output by the engine without additional counterforce due to of effects such as Bending moments or jamming or ohnnötige friction overcome Need to become, the one by one not in the desired Direction of action or not at the desired point taking place force application can be caused.

there may be provided a single endless member, on which the pulley is attached, so that at the motor shaft, a central force application point results. The storage of the motor shaft is advantageously constructed so that this as close as possible is located on one of the bearings to low bending moments in the motor shaft to keep.

When Endless member can serve as a V-belt, for example, the corresponding over arranged on the motor shaft and the reverse shaft pulleys in frictional Interdependence with the motor shaft is. However, one is preferred positive and thus slip-free connection, being an endless member in particular Chains, toothed belts, and preferably toothed flat belts, and ribbed belts as have proven to be compatible with the corresponding and the reverse shaft arranged counter elements such. Gears or corresponding pulleys are engaged.

If the individual endless member transverse to the direction of movement over a certain width extends, for example, a wide timing belt can with it a guide the movement of the suspension the cable arrangement on the endless member in the desired Be ensured direction, so no additional Guides, about about one in guide rails out Sleigh needed are, albeit an embodiment the invention with a slide attached to the endless member conceivable that's in a guide rail or on a guide rod running, where the cable arrangement attacks. Advantageous in terms of a good leadership but is a structure with two spaced apart in the motor shaft direction, parallel endless members, which acts on the cable arrangement.

Prefers it is when the cable arrangement between the two endless links engages a carriage attached to both endless members or suspended is, preferably substantially centrally. That's how it comes it to a uniform distribution the load on both endless belts.

In this advantageous embodiment, there is a four-point load on the motor shaft, wherein the force can be performed on each of the two endless belts Lagernah so that not only bending moments can be kept low on the motor shaft, but also the load of the individual bearings can be reduced. Particularly preferably, the deflection roller is mounted in the middle between the endless members, so that the applied tensile force evenly distributed both endless members.

ever according to the local Conditions at the site and the desired purpose, for example as a rowing machine or as a train portal to run from vertically directed trains to Abdominal muscle training or as a butterfly station for training the Pectoral muscles, the Zugapparat thereby a different frame structure and thus the or the endless member (s) a different position and movement direction.

To the Setting the maximum possible train length can thereby attacks be provided, for example, where the slide abuts when the desired Reversal points are reached. The stops can be adjustable or motorized be mobile. It would be Also conceivable, in the case of a train portal lower stop, on the carriage when reaching the lower reversal point too lying comes as a drive to use to lift the sled, if the exerciser according to the training program only his holding power in the retreat movements but should not execute an active drag.

Advantageous it is further, if the cable arrangement via an intermediate, variable power splitter attacks that set up is the power output by the engine depending on the train length and / or Speed of the left and right trains performed by the exerciser on the left and right arm and the left and right leg divides.

Consequently If a transversely acting resultant can be compensated, if the trainee with the two gripping options each with different high power, i. with different high speed or train length draws. Advantageously, it is not only possible that the tensile properties in the concentric and the eccentric phase as desired or training program are controllable, but it will be even then a two-armed training allows if a trainee only has one-sided low radii of movement or just over has a low active traction, on the other side of the body but still fully operational is.

Advantageous the compensating device has a rotatable deflection roller up, over a cable preferably wrapped with a wrap angle of 180 ° is, with the pulley zugkräfteübertragend but rotatable is connected to the or the endless member (s) or in operative connection stands and the cable in two by the trainee - for example, to appropriate Handles or loops - tangible cable strands divides.

at two-arm operation the traction unit acts on the one hand as a pulley Type "differential" with which ensured is that the trainings applied by the trainees regardless of Their resultant transverse direction always in the direction of action and at the desired Transmitted force application point become. On the other hand, the arrangement can also act as a signal generator for the Trainers serve that he does not pull evenly with both arms. Because the rotatably suspended Deflection pulley rotates at different levels of traction long, until the exerciser notices the difference in length of the two rope strands and counteracts, by pulling on the shorter rope strand stronger and / or the train on the longer decreasing rope strand is reduced.

at one-armed operation the pulling apparatus, however, either one of the cable strands is easy just detained while is pulled at the other, or becomes one of the cable strands firmly connected to a fixed point, for example, on the frame of Zugapparats, for what advantageously a stationarily arranged Locking device is provided, for example, a rope brake. in this type of operation serves the pulley as a loose role of a pulley, so that the force to be applied by the exerciser due to the loose role of the cable in about half in the case of an ambidextrous activity corresponds to applied force.

alternative can do this Also, several rotatable pulleys be provided with the Motor shaft are connected, so at least for the one-armed activity a pulley arrangement with reduction results, the cable between two pulleys over a Gegenhalterolle led can be.

In an advantageous development, an additional reversing shaft is further provided, which is arranged on the opposite side of the carriage as the reversing shaft, wherein one of the two Seilzugstränge is guided along the flow direction of the endless member for Zusatzumkehrwelle and these preferably roll-wrapped and wraps around from there to the locking device the appropriate height for the trainees is returned to which the other cable train is coming from the reversing wave coming. The locking device can then. be designed as a displaceable, in particular height-adjustable stop arranged for handles on the cable ends, with one-handed cable the handle on the other end of the rope regardless of the set height of the locking device always abuts the stop. Preferably, the locking device is movable by motor, wherein the height of the locking device as well as the power output of the electric motor of the Counter power generating device according to the stored on a smart card and detected by a corresponding card reader specifications can be set.

Further advantageous developments relate to the control of the electric motor the counter power generating device and are the subject of further subclaims. It goes without saying that the characteristics of the claims, as far as it is makes sense, can be combined as desired, without the scope of the invention to leave.

in the The following are individual preferred embodiments of the invention with reference to the attached Drawings closer explained. It demonstrate:

1 a schematic sectional view of a traction apparatus according to an embodiment of the invention in the normal plane to the motor shaft;

2 the in 1 shown pulling apparatus in front view; and

3 a partially cut out, the 2 corresponding view of a traction apparatus according to another embodiment of the invention with two pulleys.

First, reference is made to the 1 and 2 ,

The traction apparatus shown there has a bottom plate 2 on, on which a three-phase motor 1 is arranged stationary. The three-phase motor 1 has an output shaft 3 at her the engine 1 opposite end over a bearing 4 at the bottom plate 2 is supported. With 28 Furthermore, an incremental encoder is referred to, with which the angle segments around which the motor shaft 3 has been counted to be used as input for the regulation of the motor 1 to serve. The regulation of the engine 1 can be done in a known manner expert motor. Particularly suitable is a control of the engine, as has been described in the separate application DE 10 2004 033 074, which is hereby expressly incorporated.

The traction apparatus shown in the figures, for example, be designed as a train portal with a portal-like frame structure, of the bottom plate 2 , not shown side frame members and supported therein reversing shaft 13 is formed, which parallel to the motor shaft 3 and is arranged vertically displaced upwards. However, it would also be conceivable, the reverse wave 13 or below standing described in more detail 15 . 16 attach directly to a building ceiling or wall.

The motor shaft 3 and the reverse wave 13 are about two parallel to each other toothed belt 11 . 12 connected to each other, where the form-fitting with the timing belt 11 . 12 on the motor shaft 3 provided pulleys 18 . 19 and the opposite, provided on the reversing shaft pulleys 21 . 22 (and thus the timing belt 11 . 12 ) are spaced apart in the motor shaft direction far enough that there is a good guidance of the movement in the direction of flow of the toothed belt and the introduction of force into the motor shaft 3 near the axial ends of the motor shaft 3 takes place, so near storage of the motor shaft 3 in stock 4 or engine 1 , so that the bending moment load of the motor shaft 3 is minimized.

On the two toothed belts 11 . 12 is in each case a slide with one of its axial ends 9 attached, at the center of a pulley 5 is rotatably suspended so that a tensile force acts on the two outgoing from the pulley cable pull of the looped around the pulley rope in the same direction as the two toothed belts 11 . 12 expire (ie vertically in the illustrated embodiment). This applies in any case in the section between the pulley 5 and on the reverse wave 13 arranged pulleys 24 . 25 where the cable pull 7 or the two Seilzugstränge, are deflected by about 90 °, to another, suspended on a stem of the frame scaffold, not shown, pulley 29 to be deflected another nearly 90 ° down so that the exerciser one or two handles 8th at the ends of the cable strands can take to perform from top to bottom pulling movements.

In order to limit the possible train movements to a reasonable for the training success train length or to protect the traction apparatus against damage, is also an upper stop 15 and a lower stop 16 provided, which may for example be attached to the framework, not shown, between which the carriage 9 is movable along a vertical path. Conceivable, but due to the good leadership properties of the timing belt not required would be an additional guidance of the carriage in the vertical direction, for example along vertically directed guide rods on which slides the carriage via corresponding receiving openings along.

If the trainee with the traction apparatus in accordance with the illustrated embodiment executes a trailing arm hoist, the power emanating from both arms is transmitted to the diverting pulley via the two cable pull strands 5 and on the sled 9 initiated from where they have the two toothed flat belts 11 . 12 to the through the pulleys 18 . 19 defined force application points on the motor shaft 3 which are in turn in accordance with the predetermined regulation or according to the predetermined training program from the engine 1 is applied with a counter-rotating torque.

The fact that the force is applied to near-bearing points, the motor shaft 3 have a relatively light construction and thus a small diameter, so that due to the low lever even with small engine torques the trainees high traction can be demanded and a downstream transmission is not required.

If, on the other hand, a one-armed pulling exercise is to be carried out, the trainee fixes one of the cable strands via a cable brake, not shown, or connects it to the frame scaffolding and leads over the handle 8th on the other rope strand the one-armed train. The deflection roller acts 5 as a force-dividing, loose role of a pulley, but also in this case, the force on the pulley 5 directed purely vertically and centered on the slide 9 he follows. The applied force corresponds to substantially half the force that would be applied to a beidarmigen train, in which the pulley 5 does not act as a loose role of a pulley, but as a kind of differential, which at greater pulling power or length to unwind the cable 7 leads in this direction.

3 Finally, shows a further embodiment of the traction apparatus according to the invention, in which over two pulleys 5 . 6 instead of a pulley 5 a reduction for the one-armed train is formed. For this purpose, the cable runs from the one handle 8th over the pulley 24 to the first pulley 5 , from there back to another pulley 26 on the reverse wave 13 to turn from there back to another, on the sled 9 arranged deflection roller 6 , from which the other cable end over the pulley 25 diverted to the trainer out.

Of course they are Deviations from the variants shown possible without the basic idea to leave the invention.

So more than two reduction stages would be conceivable. Likewise it would be conceivable, if instead of in the in 3 shown embodiment provided central role 26 and a continuous cable 7 two separate cables are vorzgesehen, one end of each fixed to the reverse shaft, so that the reduction is effected even in beidarmigem train because the pulleys 5 . 6 each act as loose rollers in a pulley.

Claims (19)

Training device, in particular for muscle training, with a counter-power generating device, the an electric motor ( 1 ) with an output ( 3 ) provided with at least one training body ( 7 ) cooperates, and wherein the electric motor is preceded by a control device, characterized in that the exercise member is a cable arrangement ( 7 ) with two gripping possibilities or suspension devices ( 8th ) for the trainee, by means of which a traction power applied to either one or both arms or legs ( 3 ) of the electric motor ( 1 ) is transferable. Training device according to claim 1, characterized in that the electric motor as a three-phase motor ( 1 ) and its output as a motor shaft ( 3 ), wherein at least one with the cable arrangement ( 7 ) connected endless member ( 11 . 12 ) is provided, which the motor shaft ( 3 ) and one of which at least by a length of a maximum possible pulling movement spaced, rotatably arranged reversing shaft ( 13 ) wraps around. Training device according to claim 2, characterized in that the endless member ( 11 . 12 ) positively with the motor shaft ( 3 ) and preferably the reverse wave ( 13 ) is engaged. Training device according to claim 2 or 3, characterized in that the cable arrangement ( 7 ) is arranged so that the effective direction of the over the cable arrangement ( 7 ) applied tensile power at least in one between motor shaft ( 3 ) and reversal wave ( 13 ), at least the length of the maximum possible pulling movement corresponding portion of a flow direction of the endless member ( 11 . 12 ) between motor shaft ( 3 ) and reversal wave ( 13 ) corresponds. Training device according to one of claims 2 to 4, characterized in that a with the cable arrangement ( 7 ) traction-power transmitting connected carriages ( 9 ) provided on the endless member ( 11 . 12 ) and in response to an over the the cable arrangement ( 7 ) applied pulling power together with the endless member ( 11 . 12 ) is movable along the endless member flow direction. Training device according to claim 5, characterized in that two axially spaced in the motor shaft direction, parallel endless members ( 11 . 12 ) are provided and the cable arrangement ( 7 ) on the Sledges ( 9 ) with the two endless links ( 11 . 12 ), wherein the point of application of the cable arrangement ( 7 ) between which endless members ( 11 . 12 ) is preferably provided at least substantially centrally. Training device according to one of the preceding claims, characterized in that a beginning of the pulling movement defining, preferably lower stop ( 16 ) and the end of the maximum possible traction movement defining, preferably upper stop ( 15 ), which are preferably adjustable and / or for the carriage ( 9 ) are provided. Training device according to one of the preceding claims, characterized in that the cable arrangement ( 7 ) via an intermediate, variable power split device ( 5 ; 5 . 6 ), which is adapted to the engine ( 1 ), depending on the train length and / or speed of the left and right trains performed by the trainee on the left and right arm or the left and right leg split. Training device according to claim 8, characterized in that the power splitting device ( 5 ; 5 . 6 ) at least one rotatably arranged deflection roller ( 5 ; 5 . 6 ), over which at least one cable pull arrangement forming cable ( 7 ) is looped so that they the cable ( 7 ) divides into the two pull-rope strands tangible by the trainee, wherein the deflection roller ( 5 ) especially on the endless member ( 11 . 12 ) or the carriage ( 9 ) and wherein the wrap angle is preferably almost 180 °. exerciser according to one of the preceding claims, characterized that at least for one of the cable strands a locking device is provided, in particular a rope brake or a stop. Training device according to one of claims 4 to 10, characterized in that on the reverse shaft ( 13 ) at least one counter-deflection roller ( 24 . 25 ) is arranged per cable strand over which the cable ( 7 ) of the cable arrangement is looped. Training device according to claim 11, characterized in that an additional reversing shaft is provided which on the opposite side of the carriage ( 9 ) like the reverse wave ( 13 ) is arranged, wherein one of the two Seilzugstränge along the flow direction of the endless member ( 11 . 12 ) is guided to the additional reversing shaft and this preferably roll-wrapped wraps around and is guided from there to the locking device to which also the other cable train from the reverse shaft ( 13 ) out of coming. exerciser according to one of the claims 10 to 12, characterized in that the locking device as movable, in particular height adjustable arranged stop for Handles at the cable ends is formed and preferably motorized is movable. Training device according to one of claims 2 to 13, characterized in that the endless member ( 11 . 12 ) is designed as a chain. Training device according to one of claims 2 to 14, characterized in that the endless member ( 11 . 12 ) as toothed belt ( 11 . 12 ), preferably toothed flat belts ( 11 . 12 ) is trained. Training device according to one of claims 2 to 15, characterized in that the endless member ( 11 . 12 ) is designed as a ribbed belt. Training device according to one of the preceding claims, characterized in that the electric motor ( 1 ) is associated with a frequency converter, by means of which the frequency and the strength of the electric motor supplied to the three-phase current can be adjusted. exerciser according to claim 17, characterized in that the control device upstream of the frequency converter. exerciser according to claim 18, characterized in that the control device in construction and interaction with the motor and the frequency converter the own patent application DE 10 2004 033 074 corresponds.