CH709805A2 - Weight adjustment via angle-adjustable ramp. - Google Patents

Abstract

The invention relates to a weight adjuster (1) on a power station (2), which has a support frame (3) on which a rotatably mounted guide frame (4) is mounted, which has rails (7) on which the weight (8) by means of rollers (3). 9) or sliding elements is longitudinally movable and the angle (S) of the guide frame (4) by means of active means (19) is infinitely adjustable and thus causes a change in load on the rope (10). The cable (10) can be live, and by means of button (16), force sensor (20), tachometer (21), vibration generator (22) and the controller (18) can optimize a training program.

Description

Technical area

The invention relates to a device on a fitness device, so as to adjust a training weight infinitely by means of an active agent and, if necessary during exercise training to increase or decrease by pressing a button or automatically, according to the preamble of the first claim.

State of the art

Fitness equipment for studios and homes are well known, with the majority of cables and pulleys can lift a rod guided metal weight vertically raise and lower, the ropes can be performed in different directions to the body muscles, such as back, arm, abdomen -, leg muscles, as well as the smaller muscle in each angular position to keep under muscle tension, thus strengthening the muscles and improve the cardiovascular system.

In order to obtain a constant force during rotational movements of arm and legs, systems are known, which by means of eccentric a certain weight over the entire stroke resp. Keep bow dimensions constant, as described in US Pat. No. 3,858,873 or DE 3,445,104 A1 or DE 19 710 132 C1. For ease of weight adjustment, manual and electro-mechanical systems are known, such as e.g. US 8 016 729 Bs or DE 10 2006 003 731 A1 or by means of adjusting the load arm in patent EP 1 423 170 B1.

Devices are also known which produce a certain train or pressure instead of weights by means of fluid cylinders and some have an adjustable force setting. Also, strength devices are known which use steel springs or elastic bands.

Furthermore, systems are known in which an electric motor or electric cylinder generates the desired resistance and the motors serve as a resistor and as a drive to drive e.g. to take a certain weight position or to provide a high resistance in negative exercises, as described in US Pat. No. 4,635,933.

Presentation of the invention

The invention is based on a simply adjustable means to adjust the training load on a fitness device electrically or manually continuously, to adjust the load during the exercise and to be able to afford such a fitness device, if necessary, negative or high-intensity exercises , according to the preamble of the first claim.

By default, fitness and weight training devices disc or rectangular metal weight elements are used in different weight sizes, which are guided on a vertical rod guide and by means of a simple pin to connect the appropriate number of weight stack with a draw tube, the pull tube on a Rope is attached, which is finally fixed by means of pulleys to the dumbbell handles or pressure plates for leg presses or to the appropriate bracket for back and abdominal exercises and other more.

The trend is toward optimizing the seating position, i. E. correct position of the exercisers in order to bring their joints into conformity with the rotary elements of a fitness or strength device, i. the body joints should be as aligned as possible to the machine joints with respect to fulcrums, as well as incorporating the training weights into the optimization, which are generated by virtual weights in the form of electric motors, which generate resistance, rather than the use of metal weights.

The desired and found sitting positions, as well as the weights to be stems are finally forwarded by means of sensors to a controller and stored there, i. E. Seat height, seat distance to the device, often the grip or Beindruckplattenpositionen are also stored and serve to find again the same body position to the power station at the next training by previously made the stored data by means of a chip the power station.

Systems are also known in which by means of a cantilever a weight can be driven electrically towards or away from the pivot bearing and thus form an adjustable lever arm and with the adjustable weight in this way to a torque change, i. E. leads to the traction cable to a modified load, which forms due to the arcuate movement of such a lever arm, unequal loads on the stroke and thus are hardly professional. Thereafter, by means of a transmission and a corresponding translation, the resistance provided provided ultimately passed to the dumbbell handles, with still a corresponding stroke for the dumbbell handles must be generated.

These complicated and expensive constructions are simplified by means of the solution mentioned here and are therefore inexpensive to produce. At the same time they allow to increase or decrease the weight in situ at every angular position or stroke position of the dumbbell handles or footplate.

The advantage of this design is that the fitness device based on the usual vertically stackable and guided on rods weight unit, which is attached to a rope and fed via pulleys to the appropriate training application, with the essential difference that always all weight elements together be lifted, but the total weight, movable on a rail, by means of the angle-adjustable rail leads to a different load. If the total weight is e.g. 100 kg and this is raised vertically, the lifting load is 100 kg plus friction: theoretically, however, the total weight is brought into a horizontal position, so no lifting load is felt, but only the friction to move the total weight horizontally. Each angle below 90 ° thus increases the load to be lifted accordingly.

So that the loads to be lifted are reproducible and remain on a training device for fitness or weight training, which shows the actual performance, so as to create a reliable success story, it is advantageous to keep the friction as low as possible and no slip-stick effect permit. The requirement is ideal to realize with roles. One could also consider magnet carrier and air bag carrier, but this is an application to fitness equipment and power should be consumed as little as possible while also generating little noise. The wheels may be coated with a plastic jacket to effectively dampen the noise when moving the angle-adjustable rail.

The adjustment of the ramp is carried out electrically, either with an electric spindle cylinder or hydraulically, wherein oil flow and pressure is ultimately generated by means of an electric motor or by means of a motor with pinion with rack or ring gear and the like.

Furthermore, the fitness device can also be adjusted manually, this with the aid of a gas spring, which makes the weight "light" and this is optionally also directly blocked.

A controller with corresponding sensors ensures the desired precise position of the rail and connected to the load to be generated for each desired application. With the buttons on the dumbbell handle, the load can also be increased or decreased manually, by pressing a button during training, or a car mode can be selected.

A power cable, which transmits power for the commands and data is optionally integrated in the pull rope, so hang no more cables around or those that would have to be moored accordingly.

The control of the angular position of the weights can also be done by means of common radio-capable buttons, but are not very ecological, since batteries should be disposed of properly and thus a service effort is connected. An environmentally friendly version and also without service costs, can be realized with piezotasters, which generate enough electricity at the push of a button to send a corresponding radio signal to the controller. In addition to the manual key operation, a key can also be pressed to "automatic" by an algorithm that automates the weight increase and decrease in the controller.

With this technical solution, it is also possible to use the power station as a high-intensity and negative training device by the same effective cylinder used for basic adjustment of the training weight, the weight while training can be adjusted sequentially or continuously, be it manually or by means of an algorithm. Although you can operate with electrically operated power stations without physical weights also high-intensity and negative exercises, but the power consumption is many times higher, since always the total weight, ie the full resistance must be generated while set with the construction described here, the base load once is and then only the differential load by means of angular adjustment of the rail, similar to a ramp and thus the corresponding load is generated. In addition, no jerking and no cogging torque due to the magnetic fields in an operating at low speed electric motor and too long a standstill under load can burn such an electric motor. With this new ramp-based solution, a simple weight, which is a physical size, with a constant load over the entire stroke on the pull rope, up to the point where another weight is desired, can quickly and easily add a new load at the touch of a button Which are very appreciated by exercisers.

By means of the elegant during the training if required rail adjustment with respect to misalignment and the associated change in load, the trainees need no sparring partner or personal coach, which would normally take over the additional weight and lifting assistance tasks.

This is achieved by the features of the first claim according to the invention.

Core of the invention is, on a fitness or strength device by means of a mounted on a frame weight, which is movable on rollers on a guided rail, the angle of the guided rail is adjustable by means of active and the weight is attached to a rope and at the other end a corresponding fitness or strength training means is fixed so that the load can be adjusted and adjusted steplessly automatically or manually, wherein the ramp is adjustable from vertical to practically horizontal. The action cylinder is used to adjust the base load and also as a load adjuster for the negative and high-intensity exercises. The pull rope or drawstring has an integrated power guide for operating a button or and the weight display and by means of these buttons or by means of remote control buttons, the training weight, even during the training course, at any time individually change.

Further advantageous embodiments of the invention will become apparent from the dependent claims.

Brief description of the drawings

In the following, embodiments of the invention will be explained in more detail with reference to the drawings. The same elements are provided in the various figures with the same reference numerals.

In the drawings: <Tb> FIG. 1 <SEP> a schematic side view of a weight adjuster on a power station, with a rotatably mounted on the support frame guide frame in which a weight is mounted by means of rollers on rails and the weight leads to a rope by means of a pulley via castor and pulleys to the training application means, as well as on the support frame a means of action is connected to the guide frame and buttons, which are connected to the flow and data-carrying pull rope, as well as with the controller. <Tb> FIG. 2 <SEP> is a schematic side view of a weight adjuster on a power station, with a rotatably mounted on the support frame guide frame in which a weight is mounted by means of rollers on rails and the weight leads to a rope by means of the castor to the training insert means, and on the support frame, a gas spring with the Guide frame is connected and a trigger cable leads to a console with a release lever attached to a release button, and on the rotatably mounted guide frame a sprocket is mounted in engagement with a rack, which is guided by a Bowden cable to the lever, and an angle indicator.

Only the essential elements for the immediate understanding of the invention are shown schematically.

Way to the execution rail of the invention

Fig. 1 shows a schematic side view of a weight adjuster 1 at a power station 2, which has on a support frame 3, a guide frame 4 with a pivot bearing 5, which also carries a steering roller 6. The guide frame 4 has rails 7, in which a weight 8 is guided with rollers 9. The weight 8 is directed to a rope 10 by means of a pulley 11 by means of the pulley 12 and further pulleys 13 to the training insert means 14 and fastened there, being attached to the support rod 15 buttons 16 with a display 17, which are connected to the controller 18 , as well as on the support frame 3, an active agent 19 is connected to the guide frame 4. A force sensor 20, a tachometer 21 and a vibration generator 22 are intended for training optimization.

At power stations 2 are guided on rods stack weights, which are in operative connection with a pull rope and on the opposite side each with a training agent, which may be a dumbbell, barbell, foot plate, etc., connected and provide a standard solution To adjust stack weight for training, the pull rope has a perforated bar which dip into the segmented stack weights and each weight segment also has a transverse hole which can be connected to a corresponding pin with the perforated bar. The pen then carries all over stack weights and so the training weight is set. As shown in US Pat. No. 8,016,729 B2, the desired number of weight segments can also be connected to one another via gears and grippers, thus regulating the training weight.

The inventive solution shows a much simpler weight adjustment for training and is based on the principle of a ramp with an adjustable gradient, wherein the sliding weight 8 is always the same, the required load for the training is but by means of the variable inclination Ramp reached. Although a total mass can be moved overall by means of a weight attached to a load arm, but this only to adjust the weight to the pivot point on the load and in cooperation with the point of a pull rope on the load, so that determines the leverage, the load arm executes a pitch circle ie the load on the rope does not remain constant, but forms a sinusoidal shape with respect to load over the angle, resp. Hub.

The inventive solution provides that the rope 10 over the entire stroke H acts a constant load, with the exception, this is changed by means of the automatic or by means of the button 16, individually. The weight 8 has smooth-running rollers 9, which in a guide frame 4, which has rails 7 and serves as a ramp, the rail 7 is a U or C profile or O profile or similar profile, this tubular, concave, convex-shaped or is stored lying flat, so that the weight 8 is guided clean in any case in the rail section of the rail 7 and can not tilt therein, which is additionally ensured by means of the central connection of the rope 10 on the weight 8. If the cable 10 is pulled, then the weight 8 travels along the rails 7, as on a slide in the central or on both sides, and experiences a stroke H. By means of the guide frame 4, a ramp gradient can be created by attaching an active means 19 to it. which is connected to the support frame 3. The active agent 19 may be an electric cylinder or a fluid cylinder or as indicated in Fig. 2, may act on the pivot bearing 5, a rack means or a pinion or worm gear and the like with a directly mounted there motor.

The ramp gradient is detected by means of an angle measuring means or the like and can be displayed on a display 17 and processed in the controller 18.

The guide frame 4 is connected by means of the rotary bearing 5 with the support frame 3, at the same time is located on the pivot bearing 5, the steering roller 6, which serves to keep the cable 10 in the corresponding direction. In the base position, the guide frame 4 hangs vertically on the support frame 3, the rope 10 extends in this case over the entire distance to one of the deflection rollers 13 straight and vertical. Now, if the active agent 19 is actuated and pivots the guide frame 4 upwards to quasi in the horizontal position, so learns the rope 10 on the castor 6 almost a 90 ° angle, but allows the weight 8 to move smoothly in the rail 7 , The steering roller 6 is mounted so that the cable 10 moves parallel to the rail 7, no matter in which ramp position, as well as between the rails 7 in the middle. By means of the formula for <inclined plane>, the load on the rope can indeed be expected, but in addition there are the friction values at the steering roller 6, deflection rollers 13, and rollers 9 and the whole can be determined empirically for different angular positions of the rails 7. Also, the effective tensile load on the cable 10 by means of a force sensor 20, which may be a low-cost train scale, measure effectively and adjust in conjunction with a controller 18, the setpoint with the actual value by the active agent 19 is extended or retracted accordingly, so that generates a ramp change and the angle on the rail 7 is changed so that the desired load on the cable 10 can be accurately adjusted. Instead of the rollers 9 and sliding elements can be used, which nowadays, especially with PTFE additive or oil-containing deposits have very good sliding properties, which is not central here, but that in no case a slip-stick effect may occur, the otherwise in a stroke could lead to a faltering.

The guide shown here of the rope 10 corresponds to a pulley 11 by the rope 10 is fixed to the guide frame 4 and the pulley 12 is mounted on the weight 8, then the rope 10 is guided on the guide roller 6 past the guide rollers 13 and ultimately attached to the training insert means 14. The advantage is that the stroke H of the weight 8 in this respect only half of the stroke H1 on the rope 10, resp. on the support rod 15 is. The theoretical disadvantage is that the weight 8 has to be twice as high, but the gain that the guide frame 4 builds accordingly shorter and thus swings less far, compensates for the additional weight, which is smoothly displaceable as a block anyway. The weight 8 can be made segmented specifically for transport and is then screwed together in place in the rails 7 to a unit. In order to save additional space, lead can be used instead of the usual steel, which has a higher specific gravity and thus reduces the volume of the weight 8. This can also be wrapped in plastic and thus looks nobler. Also, the weight adjuster 1 can be wrapped with a cover, so that optically no adjustment mechanism can be seen.

It is optimal when the power station 2 is equipped with a training card recognition, so that the trainee must push this only to the recognition or lie down and the device automatically moves the seat in the stored position, the position of the training use means 14 brings into position and also sets the angle S of the guide frame 4, so that the right "weight" in the form of the right load is available. The controller 18 may specifically create a fixed setpoint / true balance with the values of the force sensor 20 to automatically determine, e.g. incorporate changing friction values due to temperature variations or general wear on the weight adjuster 1. Furthermore, the cable 10, which is a pull rope, also have an integrated data and power cable. Thus, e.g. be attached to the support rod 15 button 16 so that the exerciser can change the load at any time during training by the information gets to the controller 18 and this the active agent 19 commands issued more or less extend and thus more or less angle S at the Rail 7 to generate, at any time, a comparison with the force sensor 20 is possible. The trainee can additionally adjust his "weight" which he is accustomed to calling it, and in addition to the display 17, which is mounted on the support rod 15 or elsewhere, check and if necessary change the load by pressing a button, or by pressing a button to leave the optimization of the training of the automatic, which represents a stored algorithm in the controller 18. The algorithm may include a program that specifically includes negative and exhausting exercises, which is not the subject of the art. But to achieve such an optimization, the training speed should and can also be included. Therefore, the lifting speed of the rope 10 is measured, this by means of a tachometer 21 on one of the deflection rollers 13 or in the form of a distance meter, which detects the rope 10 attached cross lines and thus calculates the speed. Thus, a trainer who does not perform the exercises correctly, in this regard, be made directly visually or audibly alert, or, the load is increased briefly, so that the exercises are performed as consistently as possible slowly.

If a trainee can not make friends with the otherwise so comfortable continuous adjustment of the load, so 18 artificial steps can be generated by means of the controller, i. E. Each actuation of the button 16 corresponds to an example of a displayed weight change of 2.5 kg.

The buttons 16 may also be designed as a piezo sensor, with a radio module integrated there, which is received by the receiver in the controller 18 and the controller 18 processes the signal.

The weight adjuster 1 is also suitable for the introduction of a temporally activatable vibration generator 22, which includes an unbalance motor and, for. at one of the pulleys 13 such vibrated, so that a vibration between 5 and 50 hertz is generated and the vibrations on the rope 10, respectively. Transferring support rod 15. If the muscle is contracted, the vibrations create additional muscle stimulation and can thus contribute to the strengthening of the muscles. On the other hand, the exerciser can activate the vibration generator 22 without completing his exercises and e.g. Just hold the handrail 15 and the vibrations will lead to a positive relaxation of the muscles.

The load guide by means of deflection rollers 13 on the cable 10 can ultimately be mounted on a corresponding training insert means 14, such as e.g. a support rod 15 or to a padded lever for the Rückenbeuge, pelvic lift or foot plate for leg presses and other applications, which are made directly or via a further translation to the eccentric. The Seil10 can be installed round or as a flat band.

Because the weight adjuster 1 only has to move a weight 8, so extremely practical an industrial damper 35 between the weight 8 and the end stop on the guide frame 4 are mounted so that even when you release the rope 10 from a great height, the damper 35th absorbs the kinetic energy and the weight 8 thus returns quietly back to the starting position. The damper 35 may be a hydraulic device or may be a specially cellular polyurethane (PUR) elastomer insert, such as e.g. BASF sells under the brand name Cellasto <®>.

Fig. 2 shows a schematic side view of a weight adjuster 1 at a power station 2 as described in Fig. 1, with the difference that the active agent 19 between the support frame 3 and guide frame 4 is a lockable gas spring 23, with the unlocking means 24 and the trigger 25 on the lever 26, which is attached to a bracket 27. The pivoting of the guide frame 4 by means of a rack 28 with a Bowden cable 29 and a pinion 29 on the pivot bearing 5 or manually by means of the handle 30 and has a measuring arc 31 with the marker 32 and optionally a releasable latch lock 33.

Shown here is a simpler variant, which is manually operable. Because the weight 8 by hand in many cases can not be easily lifted into the desired ramp position, this is the blockable gas spring 23 attached as a force-equalizing element and behaves similar to the gas springs on the tailgates of vehicles. The difference is that each position of the angle S on the guide frame 4 can be locked and therefore a lockable gas spring 23 is used which has an unlocking means 24 and may be a Bowden cable or a hydraulic line. By means of the simple trigger 25 for the Bowden cable, resp. the trigger 25 as a hydraulic pressure booster, the lockable gas spring 23 is unlocked, when releasing the trigger 25 locks the mechanism and the guide frame 4, i. the ramp position is secured. The lifting of the guide frame 4 is effected by means of the handle 30 and a e.g. attached to the guide frame 4 measuring arc 31 and attached to the support frame 3 marking 32, in this way the angle S can be read, respectively. shows directly the usual and known values in «kg / lbs».

A small gain in comfort, if on the console 27, which is as close to the training resource 14, the adjacently mounted lever 26 can be operated - of course, only after pressing the trigger 25 - and by means of the Bowden cable 29, a rack 28 is actuated which engages the pinion 36, which is located on the pivot bearing 5 and thus brings the guide frame 4 in the pivoting mode, together with the support of the gas spring 23. The desired load, which is set by means of the corresponding ramp position, can with the operation of the adjusting lever 26 are fixed in the selected position and by means of the position holder 34. At the console 27, a measuring arc 31 can also be attached and the adjusting lever 26 can be read off, which value has been set or just wants to set. Standard gas springs 23 are inexpensive, blockable gas springs 23 are not. Therefore, the alternative is available at the desired ramp position of the guide frame 4 to secure this by means of a releasable lock or pawl lock 33, the ramp position.

The here shown widely installed Bowden cable 29 or the unlocking means 24, can also be laid slightly visible, the Verlegeradius must always be considered. The Bowden cable 29 may also represent a connected to a spindle drive power transmission shaft with which considerable torques can be transmitted, this instead of the rack guide 28a, rack 28 and pinion 29 so as to drive a worm gear, with the advantage that such a construction geared already the Position of an angle S of the guide frame 4 secures, ie no further locking means needed to hold the angle S.

Of course, the invention is not limited to the illustrated and described Ausführbeispiele.

LIST OF REFERENCE NUMBERS

[0045] <Tb> 1 <September> Gewichtsversteller <Tb> 2 <September> Power Station <Tb> 3 <September> supporting frame <Tb> 4 <September> guide frame <Tb> 5 <September> pivot bearing <Tb> 6 <September> castor <Tb> 7 <September> rail <Tb> 8 <September> Weight <Tb> 9 <September> Role <Tb> 10 <September> rope <Tb> 11 <September> Pulley <Tb> 12 <September> pulley wheel <Tb> 13 <September> guide roller <Tb> 14 <September> Training Operational resources <Tb> 15 <September> Handrail <Tb> 16 <September> button <Tb> 17 <September> Display <Tb> 18 <September> Controller <Tb> 19 <September> active agent <Tb> 20 <September> force sensor <Tb> 21 <September> tachometer <Tb> 22 <September> vibration generator <Tb> 23 <September> gas spring <Tb> 24 <September> unlocking means <Tb> 25 <September> Shutter <Tb> 26 <September> lever <Tb> 27 <September> Console <Tb> 28 <September> rack <Tb> 28 <September> rack guide <Tb> 29 <September> Bowden <Tb> 30 <September> handle <Tb> 31 <September> measuring bow <Tb> 32 <September> Marking <Tb> 33 <September> ratchet lock <Tb> 34 <September> Position Holder <Tb> 35 <September> Shock Absorbers <Tb> 36 <September> pinion <Tb> <September> <Tb> S <September> Angle <Tb> H <September> Hub <tb> H1 <SEP> Stroke according to pulley block

Claims (15)

1. Weight adjuster (1), characterized in that the weight adjuster (1) with a power station (2) is connected and a support frame (3), to which the guide frame (4) with the pivot bearing (5) and the steering roller (6 ) and on the guide frame (4) rails (7) are attached to which the weight (8) by means of rollers (9) or sliding elements is longitudinally movable, according to stroke (H), and is guided and stored and the guide frame (4) a means of action (19) is attached, which makes the guide frame (4) on the angle (S) infinitely adjustable and the weight (8) on the rope (10) is fixed, which on the steering roller (6) over or deflected and at the other End is attached to the training insert means (14) and having an angle measuring means. 2. weight adjuster (1) according to claim 1, characterized in that the steering roller 6 is mounted so that the cable (10) parallel to the rail (7) and centrally between the rails (7) pulls, regardless of which angle position the Guide frame (4) is located. 3. Weight adjuster (1) according to one of the preceding claims, characterized in that the rail (7) forms the guide frame (4) and represents a ramp which can be pivoted from a vertical position to an almost horizontal position. 4. weight adjuster (1) according to one of the preceding claims, characterized in that the cable (10) has an integrated power and data cable, which can be connected to the button (16), force sensor (20), the display (17) and the controller (18). 5. weight adjuster (1) according to one of the preceding claims, characterized in that the guide frame (4) during training at an angle (S) by means of the button (16) or automatically by means of an algorithm in the controller (18) can be adjusted and the Button can be a piezo button with radio module. 6. weight adjuster (1) according to one of the preceding claims, characterized in that the cable (10) of a tachometer (21) can be detected and values go to the controller (18). 7. Weight adjuster (1) according to one of the preceding claims, characterized in that the cable (10) receives the frequency generated by the vibration generator (22) at a deflection roller (13) and selectively forwards the training use means (14). 8. weight adjuster (1) according to one of the preceding claims, characterized in that the training insert means (14) comprises one of the following elements, which are a support rod (15), a pull or push rod, a padded bar, a padded plate, a foot plate, a tab, a barbell and the like. 9. Weight adjuster (1) according to one of the preceding claims, characterized in that the guide frame (4) can be hydraulically, electrically or manually pivot by means of the active agent (19) and can be locked in any position and the active agent (19) on the one hand on the support frame (3) and on the other hand on the guide frame (4) rotatably mounted. 10. weight adjuster (1) according to claim 9, characterized in that the active means (19) is a cylinder or a rack (28) with pinion (36) or a rotary motor with worm gear and attached thereto or in an angle measuring means or length measuring means, which acts electronically or mechanically. 11. Weight adjuster (1) according to one of the preceding claims, characterized in that for extending the stroke (H) a pulley (11), by means of the pulley roller (12) which is attached to the weight (8) and the hub (H1 ) causes. 12. Weight adjuster (1) according to one of the preceding claims, characterized in that the cable (10) is guided on the deflection roller (13) and is optionally attached to a cam or eccentric. 13. Weight adjuster (1) according to one of the preceding claims, characterized in that the guide frame (4) by a gas spring (23) is supported, which is blockable or a pawl lock (33) or a worm gear takes over the lock. 14. weight adjuster (1) according to one of the preceding claims, characterized in that the weight adjuster (1) has a damper (35) and the weight (8) may consist of lead and is segmented for mounting and may have a cover. 15. weight adjuster (1) according to one of the preceding claims, characterized in that the guide frame (4) a measuring arc (31) or a marker (32) and the support frame (3) a measuring arc (31) or a marker (32) itself located.