EP0732127A2 - Vorrichtung zur Vermessung und zum Training von Kräften und/oder Beweglichkeiten von Mensch oder Tier - Google Patents

Vorrichtung zur Vermessung und zum Training von Kräften und/oder Beweglichkeiten von Mensch oder Tier Download PDF

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Publication number
EP0732127A2
EP0732127A2 EP96103313A EP96103313A EP0732127A2 EP 0732127 A2 EP0732127 A2 EP 0732127A2 EP 96103313 A EP96103313 A EP 96103313A EP 96103313 A EP96103313 A EP 96103313A EP 0732127 A2 EP0732127 A2 EP 0732127A2
Authority
EP
European Patent Office
Prior art keywords
force
positioning
measuring
measurement
mobility
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.)
Withdrawn
Application number
EP96103313A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0732127A3 (de
Inventor
Georg Doz. Dr. sc.nat. Blümel
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.)
Bavaria Patente und Lizenzen Verwertungsgesellschaft mbH
Original Assignee
Bavaria Patente und Lizenzen Verwertungsgesellschaft mbH
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 Bavaria Patente und Lizenzen Verwertungsgesellschaft mbH filed Critical Bavaria Patente und Lizenzen Verwertungsgesellschaft mbH
Publication of EP0732127A2 publication Critical patent/EP0732127A2/de
Publication of EP0732127A3 publication Critical patent/EP0732127A3/de
Withdrawn legal-status Critical Current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
    • A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2208/00—Characteristics or parameters related to the user or player
    • A63B2208/02—Characteristics or parameters related to the user or player posture
    • A63B2208/0228—Sitting on the buttocks
    • A63B2208/0233—Sitting on the buttocks in 90/90 position, like on a chair
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2208/00—Characteristics or parameters related to the user or player
    • A63B2208/14—Characteristics or parameters related to the user or player specially adapted for animals
    • 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
    • A63B2220/51—Force
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
    • A63B2225/09—Adjustable dimensions
    • A63B2225/096—Adjustable dimensions automatically adjusted according to anthropometric data of the user

Definitions

  • the invention relates to a device for measuring and training forces and / or mobility of humans or animals.
  • Such devices are required, for example, to control the development of individual muscles or muscle parts or the mobility of the corresponding body parts as precisely as possible. This can be important in competitive sports, for example, to check training progress, but also in medical rehabilitation processes. Comparable applications are also conceivable for racing horses etc.
  • the present invention aims to provide a device for measuring and training the forces and / or mobility of humans or animals, which is more suitable especially for the mentioned applications.
  • the position of the affected parts of the body relative to the corresponding means of attack is basically reproducible during the individual measurements or exercises. As a result, it can be set again and again. As a result, the individual force measurements or exercises can be carried out under the same or at least under similar conditions. The measurement results are thus comparable and thus meet the requirements placed on them with the desired precision.
  • the engagement means and the means for force measurement are designed as force absorption plates or pressure load cells (claim 2). This is particularly advantageous if the position of the affected body parts should not be changed during the measurement, as is the case with isometric exercises. From the pressure which an affected body part exerts in a given position on a force absorption plate, it is possible to infer the underlying forces which the corresponding muscles or muscle parts exert.
  • load cells has also the advantage that standard elements can be used.
  • the means for positioning and / or force and / or mobility measurement are preferably equipped with magnetic brakes (claim 3).
  • Magnetic brakes allow a more flexible positioning of the means for measuring force and / or mobility or the corresponding parts of the body. This is particularly advantageous if (also) measurements are to be made on moving parts of the body. The same applies to parts of the body with a large radius of action, such as the extremities, in particular the human arms or parts thereof.
  • the forces that the test person exerts against the braking resistance by means of individual muscles or muscle groups are measured.
  • the respective magnetic brake can transmit the forces to a measuring sensor.
  • such means for measuring strength and / or mobility are advantageous if, for example, the range of mobility of the extremities or the rotational mobility of the spine are also to be determined.
  • the positioning means preferably comprise a spatially adjustable recliner chair for receiving a subject (claim 4). For many applications, this enables the test subject to be positioned in a particularly simple and precise manner.
  • handles are provided as the means of attack.
  • the handles are fixed or adjustable on a skeleton-like linkage.
  • the skeleton-like linkages are designed for flexible spatial positioning of the handles (claim 5).
  • Such an arrangement enables a particularly flexible and varied use of the device. For example, it can be designed in the same way for moving, isometric and forced exercises or movements be. In particular, measurements of the rotational mobility in the upper body area are possible. With the help of such skeletal or exo-skeletal elements, an optimal adaptation of the device to the anthropometry of the test subject is possible, which ensures highly reproducible measurement conditions.
  • At least one positioning means is preferably equipped with drive means (claim 6).
  • the positioning means have position measuring means for measuring relative positions of at least one part of the body and an attack means (claim 7). This enables a particularly uncomplicated handling of the device according to the invention.
  • Another preferred embodiment is equipped with means for data processing, including means for inputting, storing and outputting measurement and training-relevant data (claim 8).
  • means for data processing including means for inputting, storing and outputting measurement and training-relevant data (claim 8).
  • the required patient data can be easily entered or called up on site, corrected or expanded if necessary, and / or the associated measurement data can be further processed, processed or managed without any particular effort.
  • Common data transmission means are preferably provided between means for force and / or mobility measurement and / or position measuring means and means for data processing, which further simplify the administration and processing of the measurement data.
  • there is the possibility of using a biofeedback process cf. EP-A-94 113 968.5). In this way, the test person can exactly understand a given load sequence.
  • the data processing means and the drive means are designed for an exchange of control signals and measurement data (claim 9).
  • This enables almost complete automation of the device according to the invention. For example, it could now be designed in such a way that the test subject only has to enter his name in a data processing system in order to call up the corresponding device setting — previously stored — to carry out the necessary measurements and to evaluate and further process or manage the measurement data. An immediate reaction of the device to the existing performance of the affected muscles would also be conceivable as part of mobility training.
  • Rotation positioning means are preferably used in a device according to the invention, in which rotatable parts can be fixed in desired positions by means of a permanent magnet brake, the permanent magnet brake is connected to means for force measurement, and means are provided for minimizing the friction during the transmission of forces to the force measurement means (claim 10 ). This enables particularly uncomplicated and reliable measurements, especially when measuring the extremities.
  • X, Y and Z which are also shown in the individual figures. They correspond to the mutually perpendicular axes of a Cartesian coordinate system.
  • the exemplary embodiments described always lie in the same way such that the X axis corresponds to the longitudinal direction, the Y axis corresponds to the transverse direction and the Z axis corresponds to the height direction of the devices.
  • Figures 1 to 6 show a device according to the invention for measuring and training forces, which a seated or a lying test subject applies with his legs (or at least parts thereof).
  • the test subject sits on a recliner chair 10 for a measurement process (see FIGS. 1-3).
  • the desired position of a backrest 14 of the recliner chair 10 is set via first positioning means 12.
  • the measurements can be carried out sitting upright (see FIG. 1) or lying down (see FIG. 2).
  • the height of a seat surface 16 above a device base 18 is adapted to the size of the subject by means of second positioning means 20.
  • Different front parts 22, 24, 26, 27 or 28 allow the front end of the seat surface 16 to be varied in accordance with the desired design.
  • the front parts 22, 24, 26, 27 or 28 can be attached, for example, by means of plug-in bolts 30, 32 (cf.
  • the armchair 10 is mounted on rails 34 and 36 and equipped with corresponding third positioning means (not shown).
  • the knees of the test person are angled downwards, regardless of their rather lying or sitting overall posture, between two contact surfaces 40 and 42 or 44 and 46 (see especially Fig. 4 to 6). This is done by moving the chair in the X direction according to the length of the thigh of the test person. Then the attack surfaces 40 and 42 or 44 and 46 are brought into a desired position on both sides of the knees. For example, they can touch or crimp the knee from both sides at the same time. In the present exemplary embodiment, this positioning is carried out by fourth positioning means 50 or 56, by means of which the engagement surfaces 40 or 46 can be displaced in the Y direction.
  • the attack surfaces 42 and 44 are rigidly attached to a central wall 52.
  • attack means 60 'or 62' can be provided, which are arranged above the feet, so that forces exerted upwards can also be measured.
  • attack means 70 and 72 are placed on the top of the knees (see FIG. 6). These can be moved in the Y and Z directions by fifth positioning means 80 and 82, respectively, and thus adapted to the position and the dimensions of the knees.
  • the device can thus be precisely adapted to the external dimensions of the knees by means of the contact surfaces 40, 70, 42 and 44, 72, 46 and, in this respect, has exo-skeletal properties. This in turn ensures highly reproducible measurement conditions.
  • knee measuring means 40, 42, 44, 46, 70 and 72 can also be via sixth positioning means 90 in the height (Z direction) and can be moved in the X direction via seventh positioning means 92. It is described in more detail below with reference to FIG. 6.
  • the arrangement of knee measuring means comprises six contact surfaces 40, 42, 44, 46, 70 and 72, which are designed as force-absorbing plates.
  • three force absorption plates 40, 70 and 42 are arranged in a U-shape on wall sections 51, 54 and 52 and / or force absorption plates 44, 72 and 46 on wall sections 52, 55 and 53. In this formation, they allow forces to be measured when the knees are facing each other (inwards, force plates 42 and 44), away from each other (outwards, force plates 40 and 46), or in a further direction (force plates 70 and 72 ) are pressed.
  • the entire arrangement is placed in such a way that the force-absorbing plates 70 and 72 are located above the knees and, as a further direction, the upward direction (Z direction) comes into consideration.
  • the arrangement of engagement surfaces or knee measuring means 40, 42, 44, 46, 70 and 72 shown can, however, also be placed differently in other exemplary embodiments or else be rotatably supported by means of positioning means (not shown).
  • All the positioning means listed can be adjustable by hand and / or via drive means (not shown).
  • electric motors or hydraulic systems can be used as drive means. These can each be controlled on site, ie, for example, via controllers on the individual devices.
  • an overall control via a central data processing system which is connected to the drive means via cable or radio, is also particularly advantageous.
  • the latter variant is preferably designed such that the input of the name or a number for the test subject is sufficient to save the entire measuring device by means of stored Set data appropriately.
  • Such a data processing system could also be designed for the immediate evaluation of the measurement data, for the conversion of measurement data into control signals or for other purposes, such as for a biofeedback process (cf. EP-A-94 113 968.5).
  • Trays 94 and 96 are also provided.
  • a data processing system, a monitor and a keyboard (not shown) are positioned on them, for example.
  • the data processing system is designed, for example, for the uses described above.
  • the height (Z direction) is adjusted in height together with the entire arrangement of knee measuring means 40, 42, 44, 46, 70 and 72 via the sixth positioning means 90.
  • first rotational positioning means 98 are provided.
  • FIGS. 7 to 9 show a device according to the invention for the measurement of forces and the training of the corresponding feature parts, which a standing test subject applies with his legs (or with parts of his legs).
  • a reproducible posture of the subject is ensured in particular by a semicircular armrest 100, a backrest 102 and a middle wall 104.
  • the armrest 100 and the backrest 102 can be adjusted in height (Z direction) via a common eighth positioning means 110.
  • the middle wall 104 is also adjustable in height. It can be adjusted to the subject's leg length by ninth positioning means 112.
  • the backrest 102 is first pivoted outward (direction A). It is about one for this purpose Swivel arm 120 attached to a second rotational positioning means 122 which can be rotated about an axis 124. Then the middle wall 104 is adjusted appropriately in height (Z direction). As soon as the test subject enters the device and has positioned one leg on the right and one on the left of the middle wall 104, the backrest 102 is pivoted back against the direction A until it is approximately parallel to the Y direction. At the same time or at different times, the height (Z direction) of the armrest 100 and the backrest 102 is adapted to the size of the test person via the common eighth positioning means 110. A curved handle 126 is also provided to ensure a firm placement of the subject's arms on the armrest.
  • the measuring device provides four contact surfaces 130, 132, 134 and 136 for the knee area, namely two outer (130 and 136) and two for the front of the knees (132 and 134). These are designed as force plates.
  • the force absorption plates 132 and 134 are rigidly fixed, while the force absorption plates 130 and 136 can be moved in the Y direction via tenth positioning means 140 and 142.
  • the relative position of the test person with respect to the force absorption plates 130, 132, 134 and 136 is set, for example, as follows: first, the backrest 102 (parallel to the Y axis) is displaced in the X direction via eleventh positioning means 144 such that the knees of the test person standing upright in in the immediate vicinity of the front force receiving plates 132 and 134.
  • the subject's upper body is supported by the armrest 100.
  • buckles can be provided in order to measure pulling forces exerted with the knees to the rear (in the X direction).
  • trays 160 and 162, as well as a holder 164 for a data processing system, a monitor and a keyboard are also provided. They can be adjusted in height or twisted using twelfth positioning means 146.
  • the data processing system can in turn be designed for the above-mentioned applications.
  • this device can also be designed for all the functions described above.
  • the positioning means 110, 112, 122, 140, 142, 144 and / or 146 can be equipped with any drive means.
  • weight measuring plates 101, 103 can be provided as a base. With their help, a possibly different load on his feet and thus also on the plates 101, 103 resulting from an asymmetrical equilibrium distribution of the test person can be measured. A weakness in posture can, for example, be recognized from this and then trained away. Apart from its surface, the weight measuring plate can be constructed similarly to the load cell described below.
  • Fig. 10 shows a force plate with a load cell and associated positioning means. It is suitable for the measurement of forces which are exerted along the direction B.
  • the force absorption plate consists of a front, padded plate 170 and a rear fixed, for example wooden part 172, which can be fixedly or releasably connected to one another. Adhesives or a Velcro fastener, for example, are suitable as connecting means.
  • a hexagon nut 174 is fixedly arranged, by means of which the entire force absorption plate can be detachably attached to a threaded pin 176.
  • the threaded pin 176 passes through a first mounting plate 178 and a pressure plate 180 and is firmly connected to a force sensor 182. This in turn is firmly arranged on a second mounting plate 184 and is available as a finished component of the 8524.5 kN type from Burster in D-76587 Gernsbach.
  • Both the force sensor 182 and the second mounting plate 184 are located within a load cell.
  • the side wall of the load cell is formed by an annular cover sleeve 186, which is connected, for example, to a device wall 190 via a flange plate 188.
  • the front mounting of the load cell is formed by the first mounting plate 178 or the force absorption plate.
  • the positioning of the force receiving plate can be carried out parallel to the B direction as follows: a spindle 192 is rotated via a handwheel 191 (or via a correspondingly arranged drive means). As a result, a spindle nut 193 moves parallel to the B direction, which is firmly connected to the second mounting plate 184. A locking pin 194, which is also firmly connected to the second mounting plate 184 and is guided by a guide bore 195 in a hollow device wall 190, prevents the moving parts of the load cell from being rotated.
  • a telescope-like system is also provided in order to enable relatively wide adjustments of the force receiving plate against the B-direction and at the same time to keep an all-round closed box in a relatively flat load cell.
  • a concentric protective ring 196 inside the round cover sleeve 186, which takes over the function of the cover sleeve 186 when the first mounting plate 178 is unscrewed from the cover sleeve 186. If extreme freedom of adjustment is desired, further concentric protective rings can be provided. An excessive unscrewing of the force absorption plate is finally prevented by a stop 197.
  • 11 to 14 show a measuring device according to the invention for standing or sitting test subjects. It is used for the measurement and / or training of muscle parts in the arm-shoulder and trunk area, as well as the mobility or rotational mobility of the upper body, the spine and the arms, especially the upper arms. In addition, it is designed for measurements and / or training under forced movements. All measurements can be carried out in the same way while standing or sitting, as indicated in Fig. 11. For reasons of clarity, however, only the embodiment for standing subjects is described below. Finally, a similar device could also be designed for measurements of the mobility of the lower body.
  • the subject stands on a base 200 (in the XY plane) with his back to a height-adjustable backrest 202 (cf., in particular, FIGS. 11, 12 and 14) and with his head below a crossbeam 216
  • Subjects are stabilized by a middle plate 220 between their legs.
  • the middle plate 220 is first adjusted together with the backrest 202 to the leg length of the test person in height (Z direction). Thirteenth positioning means 222 are provided for this purpose.
  • the backrest 202 and / or the center plate 220 are brought into a desired position in the X direction by fourteenth positioning means 224 and 226, respectively.
  • the subject's waist circumference can be taken into account.
  • the position of the crossbar 216 in the Z direction is adapted to the body size of the subject by fifteenth positioning means 231 such that he can stand upright under the crossbar 216 and maintain a desired space between the crossbar 216 and the subject's head becomes. Simultaneously or at different times the subject can move to the measuring position, ie stand up with his back to the backrest 202.
  • the measurements are made using a skeleton-like construction.
  • This consists of a linkage for the right and left arm of the test subject, which are arranged symmetrically to a central axis 230 on the crossbeam 216 (cf. especially FIGS. 11 and 12).
  • Each linkage consists of a handle 204 or 206, a boom 208 or 210 and a curved swivel arm 212 or 214.
  • the subject's head as described above, is below the crossbar 216, his shoulders within the arch the pivot arms 212 or 214 and his hands on the handles 204 or 206.
  • the adaptation of the skeleton-like construction to the test person is carried out, for example, as follows: first, the curved swivel arms 212 and 214 are moved along the crossbar 216 in the Y direction in order to arrange them according to the shoulder width of the test person. For this purpose, sixteenth positioning means 232 and 234 are provided for a linear displacement. The bent swivel arms 212 and 214 are then rotated into a desired position. This takes place via third rotary positioning means 236 or 238, by means of which they are connected at their upper ends (in the Z direction) to the linear sixteenth positioning means 232 or 234. The swivel arms can thus be moved laterally in the Y direction and rotated about an axis perpendicular to the X-Y plane. For example, their lower ends can be positioned next to or behind the subject's shoulders.
  • the arms 208 and 210 are rotatably attached to the lower ends of the curved swivel arms 212 and 214 by means of fourth rotary positioning means 240 and 242, respectively. They each rotate around an axis that lies in the XY plane. These axes are therefore perpendicular to the axes of rotation of the third Rotary positioning means 236 and 238 are arranged at the upper ends of the curved pivot arms 212 and 214, respectively. In this way it is possible to position the arms 208 and 210 appropriately for any position of the (stretched) arms of the subject.
  • the height of the crossbeam 216 should be such that the lower ends of the curved swivel arms 212 and 214 are at the level of the subject's shoulders.
  • the subject stands on the base 200 with his back to the backrest 202 and the central plate 220 between his legs.
  • the crossbar 216 is located above the subject's head.
  • the lower ends of the curved swivel arms 212 and 214 are arranged at the level of the subject's shoulders, for example to the right and left of his shoulders.
  • the brackets 208 and 210 are set, for example, parallel to the X direction, i.e. the subject stands with his arms straight out.
  • the handles 204 and 206 must now be placed so that the test person can grip them with their arms outstretched.
  • they are connected to the brackets 208 and 210 via linear seventeenth positioning means 244 and 246, respectively. They can therefore be moved along the arms 208 or 210.
  • the handles 204 and 206 serve as the sole means of attack.
  • several force-measuring means per attack means can be provided here, for example on all joints of the linkages.
  • the flexibility of the described embodiment can be considerably increased if the crossbeam 216 is rotatably arranged via fifth rotary positioning means 248 is. In this way it is possible to rotate the entire skeleton about the central axis 230.
  • the construction described enables very flexible settings for measurements of all kinds in the area of the upper body.
  • it can be designed for isometric exercises.
  • the third, fourth and / or fifth rotational positioning means 236, 238, 240, 242, 248 are equipped with continuously lockable magnetic brakes.
  • the positioning means 236, 238, 240, 242 and / or 248 can simultaneously serve to measure forces. The forces that a test subject exerts against the magnetic resistances are measured. (In the following, rotational positioning means, which also serve to measure forces, are identified by an apostrophe.)
  • the positioning means 236, 238, 240, 242 and / or 248 mentioned can also be equipped with drive means in such a way that measurements under forced movements and / or mobility training are possible.
  • the drive means can generally move the arms 208, 210, swivel arms 212, 214, handles 204, 206, generally the target surfaces, in a predetermined manner, for example periodically pivoting, with the body parts of the test subject lying against the moving target surfaces appropriate movements are forced.
  • Trays 250 and 252 can be seen therein, on which a data processing system 254 with a monitor 256 or for a keyboard 258 is arranged.
  • the trays are via a linkage 260 and sixth rotary positioning means 262 connected to the pad 200. They can be rotated about an axis perpendicular to the XY plane.
  • supports 264 are also shown, which stabilize the entire device, in particular during exercises for rotational mobility.
  • FIG. 15 shows, by way of example, a partial longitudinal section of the fourth rotational positioning means 242 (see, for example, FIG. 12) in an enlarged view. It contains means for rotational positioning as well as means for force measurement. Furthermore, the ends of the swivel arm 214 and the arm 210, which are connected to the rotary positioning means 242, can be seen in part.
  • the rotary positioning means 242 is rigidly attached to the swivel arm 214 and enables the boom 210 to be rotated about an axis 270. It is designed for isometric exercises. For dynamic exercises, various of the components described below would have to be replaced by an electric motor.
  • the arm 210 is screwed onto the front side (on the left in the illustration) of a cylindrical armature hub 272, among other things by cylinder screws 274, 276.
  • the anchor hub 272 is T-shaped in longitudinal section, i.e. it has a large outside diameter in its front area and a small outside diameter in its rear area. However, their inside diameter is essentially constant.
  • the inner wall of the armature hub 272 can be rotated via first deep groove ball bearings 278, 280 and is arranged concentrically around a cylindrical hollow shaft 282. It can thus be rotated about the central axis 270 of the hollow shaft 282.
  • the deep groove ball bearings 278, 280 are fixed along the axis 270 by means of retaining rings and spacer sleeves (no reference symbols).
  • annular driver 284 is arranged concentrically in a concentric recess in the front region of the armature hub 272 in such a way that its free surface is flush with the front surface of the armature hub 272. It is firmly connected to the anchor hub 272 via cylinder screws 286 (among others). Its outer diameter is smaller than the outer diameter of the front area of the armature hub 272 and larger than the inner diameter of the armature hub 272.
  • the driver 284 is also T-shaped in longitudinal section. Its rear end lies frictionless inside the hollow shaft 282. At this rear end, a concentric shaft 290 is rigidly fastened via screw, groove and spring means 288, which also lies in the interior of the hollow shaft 282. The radial fixation of the shaft 290 takes place in the front area by the first deep groove ball bearings 278, 280 via the detour from the armature hub 272 and driver 284. The latter form a gripping arm which grips around the front end of the hollow shaft 282 and from the outside via the first deep groove ball bearing 278, 280 concentrically surrounds the outer surface of the hollow shaft 282.
  • the rear area of the shaft 290 is simply fixed radially by second deep groove ball bearings 292, which are arranged flush between the inner wall of the hollow shaft 282 and the shaft 290.
  • the hollow shaft 282 is finally rigidly connected to a foundation plate 294, which in turn is rigidly connected to the swivel arm 214.
  • any rotation of the boom 210 about the axis 270 is possible.
  • the shaft 290 lies inside the hollow shaft 282, while the armature hub 272 surrounds it from the outside.
  • the rigid hollow shaft 282 is thus surrounded by rotatable parts from the inside and outside.
  • the rotatable parts are via first and second deep groove ball bearings 278, 280; 292 radially fixed against the hollow shaft 282. Further components, which are described below, are provided for fixing the rotatable parts in a desired position and thus for reproducibly positioning the arm 210.
  • annular permanent magnet 296 is concentrically attached to the armature hub 272. Together with an annular, concentric electromagnet 298, this forms a permanent magnet brake, as is available, for example, as a prefabricated component of the type 14.118.14.2.0.3 from Lenze in D-31763 Hameln. Such a permanent magnet brake allows two settings.
  • the permanent magnet 296 is fastened to the armature hub 272 via spring means 302.
  • the spring means 302 can consist of a resilient concentric ring. This is riveted to the permanent magnet 296 at several, symmetrically distributed locations by means of rivets 304 etc. It is pierced at other points that are also symmetrical to each other. There are recesses in the permanent magnet 296 behind the drill holes, each of which receives a screw head 306.
  • the diameter of the screw head 306 is larger than the bore, so that the screw head 306 is fixed in the recess in the permanent magnet 296.
  • a threaded bolt 308 is formed, which is screwed to a threaded bore 310 in the anchor hub 272.
  • the permanent magnet 296 can change its position along the axis 270 within the framework of the elasticity of the spring ring in such a way that the air gap 300 can be opened or closed.
  • the components of the rotary positioning means 242 shown so far enable any desired rotational positioning of the arm 210 when rotated about the axis 270. If the electromagnet 298 is energized, this positioning can be changed. Once the power is turned off, the positioning is fixed. Further components for force measurement are described below.
  • force measurements are only carried out when the moving parts are firmly positioned.
  • the forces exerted against an electric motor would have to be measured.
  • the permanent magnet 296 and the switched-off electromagnet 298 are firmly engaged with one another due to attractive forces and the resulting frictional forces.
  • the electromagnet 298 is on the other hand permanently connected to a cylindrical and concentric magnetic hub 312. This magnetic hub 312 concentrically surrounds the rear region of the hollow shaft 282. Between the inner surface of the magnetic hub 312 and the hollow shaft 282, third deep groove ball bearings 314, 316 are arranged flush, so that almost no friction can occur between the inner surface of the magnetic hub 312 and the outer surface of the hollow shaft 282 . This is important for the actual force measuring system shown below.
  • the magnetic hub 312 is rigidly connected on its right and on its left side to an abutment 318, 320 (see FIG. 16, the connecting means are not shown).
  • a support bearing 324, 322 is arranged below each abutment 318, 320, which is fixedly connected to the foundation plate 294.
  • a force sensor 326 or 328 is arranged between an abutment 318 or 320 and the associated support bearing 324 or 322.
  • Such force sensors are available as prefabricated components of type 8415, 5 kN from Burster in D-76587 Gernsbach.
  • the force measurement is now carried out as follows: a test subject exerts a force on the arm 210 in one of the two possible directions of rotation after the moving parts have been fixed by the permanent magnet brake. Since the permanent magnet 296 and the electromagnet 298 are in engagement, the torque is transmitted to the magnet hub 312. However, this is firmly connected to the abutments 320 and 318. As a result, the torque is transmitted as a compressive force to the first force sensor 326 or the second force sensor 328, depending on the direction of rotation. Together with the support bearings 322, 324, these each permit only one micro-movement of all components which are now connected and are movable per se.
  • the third deep groove ball bearings 314, 316 prevent forces from being lost due to friction.
  • the rotary positioning device is also equipped with the following components:
  • FIG. 15 partially shows a counterweight 330 which is rigidly connected to the shaft 290 via a counterjib 332, a coupling flange 334 and fastening means 336.
  • the counterweight is dimensioned and arranged so that it balances the weight of the boom 210. This ensures that the force measurements are not influenced by the weight of the boom 210.
  • Fixing means 338 are also attached to the counter jib 332. They serve to fix — and thus deactivate — the entire rotary positioning means 242 in certain positions. This can be advantageous for measurements for which only a rigidly bent point is required at this point on the skeletal linkage.
  • housing parts 340, 342, 344, 346, 348, 350, 352 can also be seen in FIG.
  • An incremental rotary or pulse generator 354 serves as position measuring means, which is connected to the coupling flange 334 via a friction wheel 358 and a round ring 356.
  • the pulse generator is available as a finished component of the MOM 20 type from Megatron in D-85640 Putzbrunn and is connected to a 360 board.
  • drive means for the positioning means, position measuring means, data transmission means, means for converting input or measured data into control signals for drive means or means for force measurement, cables etc. have not been shown or have not been designated for reasons of clarity.
  • the means mentioned for converting data into control signals can be integrated in a general-purpose computer.
  • the Position measuring means can be integrated in drive means, or, for manual handling, additionally or instead be designed as measuring devices or suitable integrated scales.
EP96103313A 1995-03-15 1996-03-04 Vorrichtung zur Vermessung und zum Training von Kräften und/oder Beweglichkeiten von Mensch oder Tier Withdrawn EP0732127A3 (de)

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DE19509268 1995-03-15
DE1995109268 DE19509268A1 (de) 1995-03-15 1995-03-15 Vorrichtung zur Vermessung und zum Training von Kräften und/oder Beweglichkeiten von Mensch oder Tier

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EP0732127A3 EP0732127A3 (de) 1998-08-05

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Cited By (1)

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EP1011817A1 (en) * 1997-05-21 2000-06-28 Daniel Bartal Ltd. Apparatus and method for aligning exercise machines

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DE19955048B4 (de) * 1999-11-15 2006-08-31 Bfmc Biofeedback Motor Control Gmbh Verfahren und Gerätesystem zur medizinischen Trainingstherapie
DE20012489U1 (de) * 2000-07-19 2000-11-30 Siebold Dirk Horst Trainingsgerät
DE102005027329B4 (de) * 2005-06-09 2007-05-24 Häckel, Birger, Dr. Vorrichtung zur Diagnostik und Therapie der Rumpfmuskulatur, insbesondere zur koordinativen Trainingstherapie der Muskulatur der Lendenwirbelsäule
DE102006005409B4 (de) * 2006-02-03 2012-11-08 Milon Industries Gmbh Messvorrichtung

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US4702108A (en) * 1985-06-24 1987-10-27 Regents Of The Univ. Of Minnesota Method and apparatus for measuring the isometric muscle strength of multiple muscle groups in the human body
EP0278511A1 (en) * 1987-02-12 1988-08-17 Lutz Kauffmann Muscle measuring apparatus and method
US4778175A (en) * 1986-09-02 1988-10-18 The Toro Company Electronic control of resistance force for exercise machine
US4845987A (en) * 1988-08-12 1989-07-11 Wanamax Ventures, Inc. Cervical muscle exercising and testing apparatus
WO1990011049A1 (en) * 1989-03-23 1990-10-04 David Fitness & Medical Ltd Oy Method for measuring muscular functionality and measuring and training system for muscular functionality measurements and muscle training
WO1991015998A1 (en) * 1990-04-16 1991-10-31 Marras William S Apparatus for monitoring the motion of the lumbar spine
US5163443A (en) * 1991-08-01 1992-11-17 University Of Michigan System for testing hand, wrist, and forearm strength

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US4333340A (en) * 1978-07-25 1982-06-08 Elmeskog Alf U Device for measurement of muscular strength
US4702108A (en) * 1985-06-24 1987-10-27 Regents Of The Univ. Of Minnesota Method and apparatus for measuring the isometric muscle strength of multiple muscle groups in the human body
US4778175A (en) * 1986-09-02 1988-10-18 The Toro Company Electronic control of resistance force for exercise machine
EP0278511A1 (en) * 1987-02-12 1988-08-17 Lutz Kauffmann Muscle measuring apparatus and method
US4845987A (en) * 1988-08-12 1989-07-11 Wanamax Ventures, Inc. Cervical muscle exercising and testing apparatus
WO1990011049A1 (en) * 1989-03-23 1990-10-04 David Fitness & Medical Ltd Oy Method for measuring muscular functionality and measuring and training system for muscular functionality measurements and muscle training
WO1991015998A1 (en) * 1990-04-16 1991-10-31 Marras William S Apparatus for monitoring the motion of the lumbar spine
US5163443A (en) * 1991-08-01 1992-11-17 University Of Michigan System for testing hand, wrist, and forearm strength

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1011817A1 (en) * 1997-05-21 2000-06-28 Daniel Bartal Ltd. Apparatus and method for aligning exercise machines
EP1011817A4 (en) * 1997-05-21 2001-08-29 Daniel Bartal Ltd APPARATUS AND METHOD FOR ALIGNING EXERCISE MACHINES
US6390951B1 (en) 1997-05-21 2002-05-21 Daniel Bartal Ltd. Apparatus and method for aligning exercise machines

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DE19509268A1 (de) 1996-09-26

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