DE2417258C3 - Exercise device - Google Patents

Description

2. Exercise device with a pivotable lever arm in a frame, which at its free pivotable end is provided with a handle body for the user of the device, and with inside of the frame arranged weights, which with the lever arm between the handle body and the lever arm pivot point are in connection, characterized in that the weights (84) on am Frame vertically fixed guide rods (86) are arranged displaceably and that one with the Weight (86) connected bracket (108) comprises the lever arm (100) and by means of a support body (110) rests on its upper side such that it can be moved lengthways (Fig. 5-8).

3. Exercise device according to claim 1 or 2, characterized in that the support body consists of a Roller (50; 110) exists between the side legs of the lever arm (30; 100) comprehensive bracket (48,108) is mounted.

4. Exercise device according to one of the preceding claims, characterized in that on the A guide profile (122) having different heights is attached to the top of the lever arm is along which the roller is movable (Fig. 9).

5. Exercise device according to one of the preceding claims, characterized in that on the Top of the lever arm a rack (128) is attached and that the roller (126) a cam-shaped outer circumference with teeth (132) formed thereon, which at Rotation of the roller can be rolled along the rack (Fig. 10).

6. Exercise device according to claim 1 or 2, characterized by a lever arm (30; 100) attached, Pulling cable (40) running over rollers and having a pulling handle (46) at its end (FIG. 1).

7. Exercise device according to claim 1 or 2, characterized by one on the lever arm (30; 100) attached and with this pivotable foot part (36), which one for the purpose of pivoting the lever arm serving pedal plate (38) carries (Fig.l).

8. Exercise device according to claim 1, characterized in that the guide arm (56) consists of two mutually adjustable arm parts (64,% 64b) adjustable in length, of which one arm part is articulated to the bracket (4B), while the other arm part is pivotable a vertically adjustable guide part (62) is hinged to the frame (12) (Fig. 1,2).

9. Exercise device according to claim 1 or 2, characterized in that it extends from the lever arm encompassing bracket (48; 108) a lifting rod (24) directed vertically downwards by corresponding Bores (22) of the weights (14; 84) extends and ends freely and that one the number of to be lifted Pins (26) determining weights can optionally be inserted through one side opening of each of the weights to and can be snapped into place on the lifting rod (24)

10. Exercise device according to claim 1 or 2, characterized in that the guide rods (16; 86) on both sides of the lifting rod through vertically aligned holes (20) in the weights (14; 84) extend and are attached below the lowest weight on the frame (12) (F i g. 1 -3,6,8).

11. Exercise device according to claim 10, characterized in that the lower end of the guide rod (16) is pivotably articulated on the frame (12) is, while the upper end of the guide rod (16) ends freely within the frame (F ig. 1,3).

12. Exercise device according to claim 2 or 3, characterized characterized in that the side of the roller (110) each one Guide roller (116) rotatably mounted on the bracket (108) and along the facing guide rod (86) can be unrolled (Figs. 6,8).

The invention relates to an exercise device with a lever arm which can be pivoted in a frame and which is attached to its freely pivotable end is provided with a grip body for the user of the device, and with arranged within the frame weights, which with the lever arm between the handle body and Lever arm pivot point are in connection.

Exercise devices of the type in question are known (US-PS 29 32 509), in which the training person grips a pivotable lever arm mounted in a frame in lying or standing position, which for this purpose is provided with a handle body at its freely pivotable end and on which weights act between its pivot point on the frame and the handle body. The weights are pushed onto a rod extending upwards from the lever arm and can in their Number can be changed to suit the exercise or training conditions or the strength of the training person to be adjusted.

According to the latest research, the best development or training or muscles are achieved when the Exercises performed for this purpose can be performed so that the muscles are continuous be used with almost maximum force or load.

The devices of the type mentioned above as known are not suitable for this exercise option mediate, as the resistance of the weights during the exercise movement comes into effect either remains constant or even decreases while the muscles of the person exercising are exercising The force exerted by the lever arm changes and sometimes increases at different points in the movement,

bs if the opposite resistance of the device decreases.

Guides the Tiainingsperson with the help of the device Stretching movements over the head, then that is

opposite lever arm resistance is smallest when that of the training person Available muscle power is greatest as a result of extension of the arms.

Exercise devices are also known (US-F3 6 84 688), which weights are attached to the outer circumference of disks or rollers of eccentric shape and the training person turns the disc or roller by means of a crank in order to do this in this way Lifting weight. Exercise devices of this construction can only be operated while standing, so that almost exclusively the muscle formation of the upper arms is promoted. Movements over head etc. are with Using such devices is not feasible.

Is known far. · An arrangement (US-PS 37 34 495), in which weights within a frame Guide rods are vertically displaceable. The weights can be lifted by operating a lever which is connected to the weights via a cable and which schwenkbi. ■ on one Cross member of the frame holding the weights is hinged. At one end of the lever is the one that runs over a roller and is connected to the weights Cable attached, while pedals are attached to the opposite free end of the lever. That Exercise equipment should preferably be operated while seated, i.e. it serves to build up muscles in the legs Training person on a chair in front of the frame η des Exercise device sits and presses with your feet against the pedals located at the free end of the lever, such that the lever is pivoted and the weights are raised as a result of lever movements.

Even devices of this type do not adequately correspond to the more recent findings in muscle training, J5 d. H. the weights exert essentially constant resistance with the exception of slight changes on the legs of the training person, i.e. also in the last phase of the stretching movement of the legs, when the The pressure force that can be transmitted by the training person is greatest.

Based on this, the object of the invention is to provide an exercise device of the type mentioned at the beginning (US-PS 29 32 509) to develop so that the resistance imparted by the exercise device is not only while the device is in use, for example by changing the weight, but can also be changed during a movement sequence. In particular, the fact should be taken into account be carried so that the force exerted by the hands, but also by the legs, during a lifting or Impact process is variable.

The solution to this problem is that the weights on vertically extending, on the frame pivotable guide rods are slidably attached that a bracket connected to the weights comprises the lever arm and rests longitudinally movable on its upper side by means of a support body and that the bracket is articulated in connection with one end of a guide arm that is pivotably articulated on the frame > manure stands.

A solution to the problem is also characterized in that the weights are arranged displaceably on a frame fixed vertically and that a bracket _t , · -, connected to the weights, encompasses the lever arm and rests longitudinally movable on its upper side by means of a support body.

The exercise device proves to be extremely beneficial for exercises of the kind mentioned above, in which the training person during the exercise a resistance appropriate to the flexion or extension movement is to be opposed. The device can be operated while sitting or lying down, wherein the handle body in said positions against the resistance of the weights in the frame is pivoted above.

According to an advantageous embodiment of the exercise device this is designed so that the Support body consists of a role which between the side legs of the lever arm encompassing Bracket is stored. The roller thus rolls with relatively little friction on top of the Lever arm when the training person swings the lever arm upwards.

The resistance offered by the exercise device changes as a result of changes in the vectorial force distribution on the lever arm when this counteracts the force of the weights in the frame upwards directed is pivoted. Eir.e advantageous further development, by means of which the vekiorielle force distribution on the Lever mechanism is adjustable in an extremely precise manner, provides that on the top of the lever arm a guide profile having different heights is attached, along which the roller can be moved.

When using the guide profile located on the top of the lever arm, it is particularly possible to to design the exercises to be performed lying down in such a way that the opposite resistance in so-called dead center positions of the human lever mechanism is reduced or remains constant.

For the same purpose it is also possible that a toothed rack is attached to the top of the lever arm and that the roller has a cam-shaped outer periphery with teeth formed thereon, which can be rolled along the rack when the roller rotates.

Further expedient refinements and advantageous developments are set out in further patent claims listed.

The exercise device is also extremely easy to adjust; i.e., it can easily change the number of weights be determined to increase or decrease the total weight (see. Claim 9). It is too possible to design the exercise device for pulling exercises, with a pull cable at one end a pull handle and is attached to the lever arm by means of rollers running on the frame mil the opposite end (see. Claim 6).

The invention is described below on the basis of exemplary embodiments with reference to the drawings explained.

Fig. 1 is a side sectional view of a first embodiment of an exercise or training device, the movement to be carried out being represented by dashed lines;

F i g. Fig. 2 is a sectional view taken along line 2-2 in Fig. 2. 1;

F i g. 3 is a front view of the FIG. 1 embodiment shown;

Fig. 4 is an enlarged perspective view of the movable link by means of which the during the exercise taking effect; Leverage over-heating can be changed:

F i g. Fig. 5 is a side sectional view further Awesome embodiment.! the boundary;

F i g. 6 is a partial sectional view taken from line b-b in FIG Fig. 5;

F i g. 7 is a sectional view taken on line 7-7 in FIG. 6;

F i g. 8 is a partial sectional view taken on line 8-8 in FIG. 5:

9 is an enlarged partial side view of the second embodiment according to the invention below Representation of a first form of an arrangement for programmed or predetermined resistance, and

10 is an enlarged partial side view of the second embodiment showing a second embodiment of a development for a predetermined or programmed resistance.

In the drawing, an exercise device 10 is shown, which with one on. Floor-mounted, upstanding frame 12 is equipped. As part of 12 weights 14 are shown supported on a pair of guide rods 16. The guide rods 16 are each pivotable with the aid of pivot connections 18 on the lower part of the frame 12 hinged. When the weights are lifted, the guide rods 16 can be one on both sides Verticals can be pivoted inward or outward with respect to the frame, keeping the position follow the weights in the manner described below. The weights 14 have sockets provided bores 20 which slide on the guide rods 16. The weights 14 are also with Bores 22 are provided through which a so-called lifting rod 24 extends. The number of to be raised Weights is determined by a pin 26, which optionally through a side opening of the Weights can be inserted and latched onto the lifting rod, d. h., The pin 26 can through openings 28 of the Lifting rod 24 can be pushed through under the lower weight of the selected weight stack.

A lever arm 30 can be pivoted by means of a shaft 32 on the opposite side of the weights 14 hinged to the frame 12. The lever arm extends above the weights 14 through the frame 12 and beyond the frame and ends in a handle body34 (Fig.2).

The lever arm 30 is also provided with a foot part 36 provided (Fig. 1). which is connected to the shaft 32 with the lever arm and is pivotable therewith. The foot part 36 extends below on the opposite side of the frame to the weights 14 directed downwards and outwards at an oblique angle. At its end, the foot part 36 is provided with a Pedal plate 38 is provided, which can be actuated by the foot or feet of a training person.

Another device for moving the lever arm 30 consists of a pull cable 40, which is optionally attachable to a shoulder 42 on the top of the lever arm 30, in the frame 12 according to extends above and passes over a pair of rollers 44 at the top of the frame. From the roles the cable runs down outside the frame and ends in a pull handle 46.

To place the lifting rod 24 on the lever arm 30, a bracket 48 is on the top of the lifting rod arranged and extends upwards on both sides of the lever arm (FIG. 4). A support body in the form of a Roller 50 is provided between the side legs 52 of the bracket 48 and is arranged so that it is in Is longitudinally movable longitudinally along the upper side 54 of the lever arm 30. The pivoting storage of the lever arm 30 is arranged so that the top 54 is in a substantially horizontal Position when the lifting force is over the bracket 48 comes into effect on the lifting rod 24. When the exerciser pushes the grip body 34 upwards, then the lever arm 30 pivots about the one on the opposite side of the frame Shaft 32, such that the top 54 gradually assumes an inclined position in the direction of the pivot point.

Etei this inclined position of the top 54 has the

Roller 50 at the upper end of the lifting rod 24 has the tendency to move in the direction of the pivot point of the To move shaft 32 and the guide rods 16 with respect to the frame inwardly pivot. To the position of the guide rods I ^ and to determine the upper end of the lifting rod 24, a guide arm 56 is between the bracket 48 and the opposite side of the frame 12 arranged. One end of the guide arm 56 has one end pivotably mounted on a shaft 58 in the frame 12, while the other end is pivotable is mounted between the legs 52 of the bracket 48 with the aid of a pin 60.

The shaft 58 of the guide arm is on the same cables of the frame 12 as the shaft 32 by means of movable guide parts 62 attached. These movable guide parts are adjustable to the distance between the shaft 58 of the guide arm and the shaft 32 pivotably holding the lever arm 30 change. The guide arm 56 lsi consists of two arm parts 64a, 64i> adjustable in length relative to one another formed, of which an arm part is articulated to the bracket 48, while the other arm part is pivotably articulated on the guide part 62 which is vertically adjustable on the frame 12. The arm parts 64a and 646 are releasably held together by means of adjustment holes 66 and with the aid of an adjustment pin 68. With help the arrangement described above, the guide arm 56 both in terms of length and can be changed with regard to the point of articulation.

When the shaft 58 of the guide arm is in the position shown in FIG. 1 is the position shown and the guide arm 56 to the from FIG. 1 apparent length is set. then by lifting the handle body 34 of the Lever arm 30 lifts the upper end of the lifting rod 24 upwards and follows an arcuate path, such as is represented by the dashed line 70, since the guide arm 56 is the position of the upper end of the Lifting rod 24 intended for the weights. During this movement, the roller 50 shifts on the

so top 54 of the lever arm 30 in a direction facing away from the shaft 32 to the outside to the mechanical To reduce translation, which the user when lifting the weights 14 on the handle body 34 to Is provided. The guide rods 16 pivot first outward and then around the Pivoting connection 18 within frame 12 directed inward to follow the path of weights 14 adapt.

Since the lever arm 30 and the guide arm 56 in FIG. 1 arrangement shown are held so that they rotate about offset pivot axes of their respective shafts 32 and 58 when the lever arm 30 is subject to a lifting movement, determine the distance at which the roller 50 on the top

'■ "· 54 of the lever arm 30 at any point of the Movement shifted outward to the extent of this movement by the distance between the Shaft 32 and shaft 58 of the guide arm and through

the length of the guide arm 56. Since these factors by changing the length of the guide arm 56 under Use of the adjustment holes 66 and the adjustment pin 68 as well as by changing the distance between the shaft 58 and the shaft 32 are variable using the ι movable guide parts 62, the Position and the extent of these changes of the opposing country counteracting the training person any points of the exercise movements can be changed. It also leads to a change in the Length of the guide arm 56 as well as a change in position of the pivot axis to a change in the Effect of the force vectors, which is why the changes in resistance correspond to the changes in the lever arm are determinable. ι5

The change in the mechanical translation takes place in accordance with the movement of the roller 50, if this moves outward along the upper side 54 of the lever arm 30 when the exercise device is actuated moved into positions which are further away from the pivot point of the lever arm on the shaft 32 than that position in which the roller 50 was at the beginning of the use of the exercise device.

F i g. 1 shows the force vectors that occur during actuation of the exercise device. W. Since the guide arm 56 withstands the force of the axial weight vector W 1 and prevents the roller 50 from moving in the direction of the shaft 32, it emits an equal and opposite resistance vector R 1. Since the guide arm 56 can only exert a drag force in the axial direction, the drag vector R 1 must be derived from a guide arm drag vector R. This results in a moment resistance vector R 2 which is applied by the guide arm 56 and combines with the moment weight vector W2 in order to increase the resulting moment resistance which is opposite to the pivoting movement exerted by the user. Since the moment weight vector W2 is reduced with an upward pivoting movement of the lever arm 30, this effect must be met by changing the lever arm and by increasing the moment resistance vector R 2 in order to increase the effective resistance during the upward movement of the lever arm. From the in F i g. 1 position shown by dashed lines shows that the addition of the moment weight vector W 2 and the moment resistance vector R 2 is not yet equal to the weight vector IV User at this point a greater resistance to than at the starting point of the exercise, at which the lever arm 30 was in a substantially horizontal position. At other points the vectors exceed the weight vector IV and consequently combine with the lever arm change to further increase the resistance to the user. The reduction of the moment resistance vector R 2 when the exercise device is actuated illustrates the disadvantage or the problems of devices known at the time which use a pivotably mounted lever arm. In contrast, the exercise device according to the present invention is suitable for eliminating this disadvantage, as shown.

The same effect in terms of changing the mechanical translation by the user and the Force-vector distribution of the resulting forces is achieved when you move the lever arm 30 with the help of Foot part 36 is moved over the pedal plate 38 or with the aid of the pull cable 40 over the access 46.

The use of the exercise device is described below reproduced with an explanation of exercises, as they are characteristic of devices of this type. at In such an exercise, the practitioner lies with their back on a bench with their head in the direction of the Exercise device is directed while he grips the handle body 34 with his hands.

The height of the bench is chosen so that the practitioner's arms are close to the in the retracted position Chest when the exercise begins. The practitioner starts with what is just above him Grip body 34, which he pushes upward when the arms are extended until the arms completely reached the extended position. Then the practitioner slowly pulls in his arms again or lowers him Handle body 34 on its starting position.

The practitioner usually chooses the maximum weight for this exercise that he is originally using can lift arms in the retracted position. The weight is determined by the user of the Exercise device selected by taking d <* n tenons 26 in the appropriate opening 28 of the lifting rod 24 introduces. The selected weights can then be pressed upwards with the aid of the handle body 34. When pressure is exerted upwards on the handle body 34, the weights 14 are therefore lifted by the lifting rod 24 carried upwards, since the roller 50 engages the upper side 54 of the lever arm 30.

The more the lever arm 30 is pressed upwards, the further away the roller 50 moves from the shaft 32, about which the lever arm 30 pivots. This will of course bring the lifting point of the weights closer to the Handle body 34 moved when the lever arm 30 is pushed up. The user is a diminishing one Gear ratio suspended, d. That is, the same weight exerts greater resistance. If the User lowers the handle body 34, then the opposite movement of the roller 50 takes place, i. H. the The force required to carry the weight when pulling in the arms becomes smaller.

5-8 illustrate an exercise device 80 according to one Another embodiment. The exercise device has a frame 82 which is substantially the Frame 12 according to the first embodiment corresponds, and carries weights 84 on one side. the Weights 84 are on guide rods 86 in one of the first embodiment substantially corresponding Arranged way they are not pivotably attached to the frame but are on the top and bottom of which are rigidly fixed. The weights 84 have bores 88 provided with sockets, soft to accommodate the guide rods 86. The weights can be lifted by a lifting bar 90 as the lifting bar extends through central openings 92 of the weights. The number of each selected weights can be determined by a pin 94 which through one of the openings

96 of the lifting rod is passed through (Figs. 7 and 8).

The exercise device 80 according to / further embodiment standard is provided in the same way with a lever arm 100 which is pivotably mounted in the frame 82 on a shaft 102. The shaft 102 is located on the opposite side of the frame 82 with respect to the weights 84. The lever arm 100 extends from the shaft 102 across the frame, beyond the weights 84 and ends in a handle body 106. At the upper end of the lifting rod 90 is a bracket 108 is attached in such a way that the bracket 108 surrounds the lever arm 100 and rests longitudinally movably on the upper side 114 of the lever arm by means of a support body in the form of a roller 110. As shown in FIG. 8, the roller 110 is arranged between the upstanding legs 112 of the bracket 108 and is rotatably mounted.

When an upward pressure is exerted on the handle body and the lever arm 100 moves upwards about the pivot point formed by the shaft 102 , then the weights 84 are not only pushed up along the guide rods 86 , they are simultaneously pressed against the guide rods pressed when the lever arm moves along an arcuate path. The weights 84 are pressed against the guide rods in the manner mentioned, since the roller 110 has the tendency to shift on the upper side 114 of the lever arm 100 in the direction of the shaft 102 when the lever arm is raised to the upper side obliquely with respect to the pivot bearing Serving shaft 102 to employ. In order to avoid excessive wear on the guide rods 86 and on the bores 88 of the weights 84 , a pair of alignment or guidance guide rollers 116 are provided on the bracket 108 (FIGS. 6 and 8). The guide rollers are each located on one side of the roller 110. The guide rollers run along the guide rods 86 and hold the lifting rod 90 in vertical alignment with the guide rods. As a result of this action of the guide rollers, the stack of weights 84 is centered or held in the middle on the guide rods. In this case, excessive wear on one side of the bores 88 provided with sockets is avoided.

To accommodate the roller 110 and the guide rollers 116 , the legs 112 of the bracket 108 extend outwardly from the guide rods 86 and serve to secure a shaft 118 extending therebetween which supports the guide rollers. Spacer elements 120 are provided between the legs 112 and the guide rollers 116 in order to keep them in alignment with the guide rods 86.

In this second embodiment, the roller 110 must move outwardly on the upper side 114 of the lever arm 100, as in the first embodiment, when the lever arm is moved upward by the handle body 106. This movement of the roller 110 reduces the translation available to the user in accordance with the first embodiment. However, the extent and the speed of the change are selected differently than in the first embodiment according to the invention.

The vector force distribution in the second embodiment according to the invention is essentially comparable to that according to the first embodiment, the vector diagram representation according to FIG. 5 illustrates this fact. The mode of operation of the second embodiment also corresponds essentially to that according to the first embodiment. Only the proportional change in the translation when the lever arm 100 is moved is somewhat different. This is due to the direct ί vertical movement path of the bracket 108 along the guide rods 86. The second embodiment, however, has no means for changing the lever ratios in the manner corresponding to the first embodiment, that is to say like this

ίο through the adjustable length and the adjustable Pivot point of the guide arm 56 is made possible.

When the handle body 106 is raised, the lifting rod 90 is raised accordingly, since the roller 110 is on the upper side 114 of the lever arm 100

is on top. As the alignment guide rollers 116 move up on the guide rods 86 , the roller 110 is pulled outward along the top 114 as the lever arm 100 continues to move upward. The user must therefore exert more force in order to lift the same weight. When the handle body 106 is lowered again, the roller 110 on the lever arm 100 moves inward, in such a way that the user again has a larger transmission ratio available.

Facilities according to appropriate developments (Fig. 9 and 10) can be used to Resistance at any point in the exercise to match the strength of the exerciser's muscles. at Use on a training bench in the form of a so-called "bench press" is the muscle strength of the User relatively large at the beginning of the exercise, at least when the arms are in full retracted position. Muscle strength is greatest when the arms are in full at the end of the exercise extended position. However, there is a weak point in the middle of the exercise movement the muscle strength. This point exists roughly when the upper arm and forearm have a right elbow Make angles. For weight lifting exercises, this is

■ to Punkt sometimes referred to as »glue dot«.

In Fig. 9 and 10 embodiments are shown, which are particularly suitable for exercises on such a training bench, so preferably for Exercises that are performed lying down. As

■ »5 Fig. 9, a guide profile 122 having different heights is fastened by means of bolts 124 on the upper side of the lever arm 100. If the roller 110 moves to the left during the lifting of the lever arm 100 as shown (FIG. 9)

moved in this direction, then it must first move upwards faster than would normally be the case if it were moved on the flat top 114 of the lever arm 100 . The roller 110 eventually comes to a point where the upward movement is stopped. Finally, the roller begins its further upward movement with acceleration when it moves over the last part of the guide profile 122

The in F i g. The embodiment shown in FIG. 10 provides a comparable result. In this embodiment, the lever arm is on the top 100, a rack 128 by means of bolts 130 fixed to the rack bar 128 through a roller 126 which is provided on the circumference with teeth 132, the teeth 132 are rollably on rotation of the roller 126 along the rack 128th As FIG. 10 illustrates, the roller 126 is designed in the shape of a cam on its outer circumference,

such that the roller runs on the rack 128 in a manner comparable to that of the roller 110. In this way, too, it is possible to control the resistance opposite to the user in a predetermined manner to control, for example in the area of the aforementioned »glue point«, when the strength of the user is on least is.

With the help of the exercise device it is possible to change the resistance you want reach. In addition, a large number of other configurations are possible. So can the pivot point

of the lever arm may be designed to be displaceable with respect to the frame to the degree of Change translation during an exercise. It is also possible to adjust the lever arm length during the exercise to change by moving the lever arm with respect to its pivot point and not with respect to the point is relocated to which the weights are connected. The weights can also be used by others Resistance elements are replaced, which are opposed to the movement of the lever arm.

For this purpose 4 sheets of drawings

Claims (1)

Patent claims: 1. Exercise device with a pivotable lever arm in a frame, which at its free pivotable end is provided with a handle body for the user of the device, and with inside of the frame arranged weights, which with the lever arm between the handle body and the lever arm pivot point are in connection, d a characterized in that the weights (14) on vertically extending, on the frame pivotable guide rods (16) are slidably arranged that one with the weights (14) connected bracket (48) comprises the lever arm (30) and by means of a support body (50) on its Upper side rests longitudinally movable and that the bracket is articulated with one end of a pivotable on Frame (12) articulated guide arm (56) is in connection (Fig. 1-4).