EP3328509A1

EP3328509A1 - Power trainer

Info

Publication number: EP3328509A1
Application number: EP15753626.9A
Authority: EP
Inventors: Werner Kieser
Original assignee: Kieser Training AG
Current assignee: Kieser Training AG
Priority date: 2015-07-31
Filing date: 2015-07-31
Publication date: 2018-06-06
Anticipated expiration: 2035-07-31
Also published as: WO2017020939A1; EP3328509B1

Abstract

The invention relates to a power trainer device (10) having a device frame (9), a first actuating element (1), and a second actuating element (2), a force transmitter (3), connecting the first and the second actuating element (1, 2) and having a flexible section (3'), which is displaceably guided over a deflection roller (4) and the limbs of which are each operatively connected to one of the actuating elements (1, 2) with respect to the force flow, a spring element (5), connected in a force-transmitting manner between the shaft of the deflection roller (4) and the device frame (9), a lever mechanism (6) and a pointer element (7), wherein the lever mechanism (6) transforms a displacement of the shaft of the deflection roller (4) into a deflection of the pointer element (7).

Description

Strength training device

The present invention relates to a strength training device. Weight training equipment is used in fitness centers and in the

Related to therapeutic applications used for exercises to strengthen muscle groups and improve muscle coordination. When performing such exercises, the exercising person comes along

Actuators of the strength training device in contact. The actuators are thereby moved along a path or held in a position, wherein the

Strength training device opposes a resistance. This resistance can, for example, thereby

arise that a weight is raised, a spring is deformed or a frictional resistance must be overcome. Next is for example from the document

EP0057609 AI a strength training device is known, comprising a pair of actuators, which are coupled for mutual power transmission, so that the

Resistance, which is the movement of a first

Actuator opposite is dependent on the force exerted on the other actuator of the pair of actuators.

The object of the present invention was to provide an improved strength training device with versatile

To provide application possibilities. Specifically, the task was to provide a strength training device, which allows a training exercise in which Actuating against each guided on a train, the exercising person can monitor the force itself.

This object is achieved by a

Strength training device with features solved according to claim 1.

The inventive device is a

Weight training device with a device frame, - a first actuator and a second

Actuator, a power transformer, the first and the second

Connecting actuator and having a flexible portion which is slidably guided over a guide roller and whose legs are each operatively connected to one of the actuators with respect to power flow, a spring element, force-transmitting between the axis of the guide roller and the device frame connected, a lever mechanism and a pointer element, wherein Lever mechanism a displacement of the axis of

Deflection pulley in a deflection of the pointer element

transferred.

Further embodiments of the invention will become apparent from the claims 2 to 16. In addition, the invention comprises a method for training the arm or leg muscles according to claim 17.

The device frame forms a framework to which the parts of the strength training device are attached, which should not move against each other. The first and second actuators can be acted upon and moved by the exercising person with forces. The

Actuators can, as related to the

Embodiments of the invention described as the

Use adapted handles, pedals, etc. be executed. The power transformer accomplishes a mutual power transmission between the first and second

Actuator. The power transformer may consist of several interconnected to a power transmitting chain parts. At least a part of the power transformer is designed as a flexible portion which is guided displaceably over the deflection roller, wherein a tensile force acting in the power transformer leads to a deformation of the spring element and to shift the position of the axis of the deflection roller. This increasing proportional to the force acting displacement is recognizable by a rash of the pointer element for the exercising person.

In one embodiment of the strength training device, the force transmitter comprises at least one lever with a rotational axis fixed relative to the device frame.

With the help of a lever, the strength and direction of the transmitted to the other elements of the power transformer Force be influenced. In particular, you can

Kraft training devices for different types of load of the actuators are designed so that the flexible portion of the power transformer is loaded to train.

In one embodiment of the strength training device, the force transmitter comprises at least one four-bar linkage, wherein two of the joints of the four-bar linkage are fixedly connected to the device frame. A four-bar linkage may be used to guide the first and second actuators each on a predetermined path. In a four-bar linkage in the form of a

Parallelogram this track is a straight line.

In one embodiment of the strength training device is a weight member with the flexible portion of

Kraftübertragers operatively connected and exerts a tensile force on it.

With such a weight element, the weight of actuators and parts of the power transformer

be compensated.

In one embodiment of the strength training device, the strength training device comprises a plurality of weight elements, and their forces on the actuators are balanced.

Thus, the non-actuated actuators are free of forces in all positions. This determines the user alone By the force used, the magnitude of the resistance of the strength training equipment and the weight training device risks to the user are minimized.

In one embodiment of the strength training device, a first force transmission factor between the first

Actuator and the first leg of the flexible portion of the power transformer and a second

Power transmission factor between the second

Actuator and the second leg of the flexible portion of the power transformer same.

In this embodiment, the load on the musculature of the exercising person is symmetrical.

Another embodiment of the strength training device has at least one element for determining the position of a person exercising, in particular a seat, a backrest or a lying surface.

In one embodiment of the strength training device for

Training the arm muscles, the actuators are designed as handles.

In one embodiment of the strength training device for

Training the leg extensors, the actuators are designed as padded cylinder transversely to a lever. In one embodiment of the strength training device, the strength training device is designed as a leg press, with a seat of seat and backrest, designed as a plate-shaped foot pedal first and second actuator, both of which are displaceable along a path between a seat nearer endpoint and a seat farther endpoint.

In one embodiment of the strength training device, the actuators are each connected to a four-bar linkage and the joints of the four-bar linkages are in the form of a

Arranged parallelogram.

With the help of such a four-bar linkage can

Actuators are moved only in parallel. In the case of the plate - shaped foot pedals, the plate can be held perpendicular to the applied force without im

Movement occurs a tilting of the plate forward or backward occurs.

In one embodiment of the strength training device, the actuators are pivotable in the plane of the sole of the foot and an attacking on the respective four-bar linkage

Swing mechanism adjusts pivoting angle

Dependence of the position of the actuator on its path. In one embodiment of the strength training device, the pivoting angle between the seat closer end point and the seat farthest end point varies by 10 °.

In one embodiment of the strength training device, the flexible portion of the force transducer is a rope, a band, a toothed belt or a chain.

In one embodiment of the strength training device, the pointer element is a mechanical pointer or a light pointer.

In one embodiment of the strength training device, the strength training device has a mark for reading the

Position of the pointer element. Such a mark may be, for example, a scale or a colored highlighting of an area in which the pointer is to be held during the strength training exercise. The marker may be slidably arranged to suit the exercise program.

Combinations of the features of the embodiments of

Strength training device are, if not contradictory, possible.

In the context of the invention is also a method for

Training the arm or leg muscles of a person under Use of a force training device according to the invention, wherein a hand resp. a foot of the person in contact with the first actuator and the other hand, resp. the other foot is in contact with the second actuator, the first actuator is moved back and forth along a path, the second actuator (2) is moved counter to the first actuator, a resistance force of the first actuator is exerted on the second by a corresponding applied force Actuator and vice versa is effected, and

the exercising person by observation of the

Zeigerauslag the pointer element and adjustment of the applied forces holding the pointer deflection over the entire movement in a given range.

Embodiments of the present invention will be explained in more detail below with reference to figures. Show it

Fig. 1 is a schematic representation of the

inventive strength training device;

Fig. 2 is a schematic representation of a

Embodiment of the strength training device with

Handles; Fig. 3 possible variants of actuators of embodiments of the strength training device;

Fig. 4 is a four-bar linkage as part of a

Kraftübertragers in one embodiment of the

Strength training equipment;

Fig. 5 is a perspective view of a

Embodiment of the strength training device in the form of a leg press;

Fig. 6 shows the embodiment of the strength training device of FIG. 5 in three different stages of a

Movement, each of the three stages both in front view (Fig. 6a, 6b, 6c) and in

Side view (FIGS. 6d, 6e, 6f).

1 shows a force training device according to the invention is shown schematically. A first actuator 1 and a second actuator 2 are shown as a functional block. Concrete embodiment of this

Actuators are shown in the further figures. Shown with arrows are the force Fl acting on the first actuator and the force F2 acting on the second actuator. These forces are applied by the exercising person. The power transformer 3 is shown as a functional block with a first

Force transmission factor oc, as a functional block with a second power transmission factor ß and as a broad line, the flexible portion 3 ^{λ of} the power transformer

symbolizes. The flexible section 3 of Kraftübertragers runs over a pulley 4. One of the pulley 4 running away leg of the flexible portion 3 of the power transformer is on the part of the power transformer with a force transmission factor α with the first actuator 1 with respect to power flow

operatively connected. The other of the deflection roller. 4

running leg of the flexible portion 3 of the

Kraftübertragers is operatively connected via the part of the power transformer with power transmission factor ß with the second actuator 2 with respect to power flow. The axis of

Guide roller 4 is connected via a spring element 5 with the

Device frame 9 connected. The axis of the deflection roller is operatively connected to a lever mechanism 6. Of the

Hebelmechansismus 6 causes a rash of

Pointer element 7, when the position axis of

Deflection pulley with respect to the device frame 9 shifts. The two in the figure 1 drawn parts of the

Device frame 9 are not shown connected by lines for reasons of clarity; but the two parts are to be interpreted as fixed to each other. The specific embodiment of the power transformer 3 can in particular by application of levers, gears, etc. lead to force transmission factors α and ß, the

can be different from one. In a symmetrical structure of the power transformer 3 α and ß are the same size.

FIG. 2 shows an embodiment of a

Weight training device 10 shown schematically. The first actuator 1 and second actuator 2 are as Handles executed. The power transformer consists here only of the flexible section 3 ^Λ . The deflection roller is suspended in a housing 21 which is connected via the spring element 5 with the device frame 9 in connection. A guide 22 ensures that the deflection roller 4 can only move in one direction. Deflection elements 11 and 12 guide the flexible portion 3 ^{λ of} the power transformer on the deflection roller, that the forces acting in the power transmission forces act parallel to the direction of the deflection roller, which is predetermined by the guide. The lever mechanism is in contact with the housing in which the pulley is suspended. A mark 8 in the form of a scale serves to be able to read the deflection of the pointer element 7.

Figure 3 shows various embodiments of the first and second actuator and various

Embodiments of a part of the transmission, which is connected directly to the actuators. In all three examples, the forces acting on the actuators Fl and F2 are transmitted so that a tensile load of the downstream, not shown

Lead elements.

Fig. 3 a) shows actuators 1 and 2 in the form of

Handles. The subsequent part of the power transformer is designed as a rope, belt, timing belt or chain, so that a tensile force is transmitted to the handles as a pulling force.

Fig. 3 b) shows actuators 1 and 2 in the form of plate-shaped pedals, which for actuation with the Feet are suitable. A lever 13 with an axis of rotation fixed to the device frame translates a pressure force exerted on the pedal via a further joint into a tensile force which, in the arrangement shown, is transferred via a

Pull rod 31 is transferred.

Fig. 3 c) shows actuators 1 and 2 in the form of padded cylinders, which are mounted on a lever 13. The axis of the cylinder is perpendicular to the lever and parallel to the axis of rotation about which the lever is rotatably mounted. This form of actuators is

For example, suitable for training the leg extension muscles. For such a training is expressed the

training person with the shin or possibly with the footrest against the padded cylinder. The knee joint is located approximately on the axis of rotation of the lever

13. Over the entire sequence of movement of the exercise, the direction of the actuator 1, respectively changes. 2

acting force, as in the present figure by the two different directions of the arrows to the

Forces Fl and F2 displayed. In the shown

Embodiment, the amount of this force in a

Torque translates to the winding of a rope on a roller or a chain with articulated

Chain element or a toothed belt on a pinion

causes. As a result, a tensile force is transmitted in the rope or in the chain.

In Figure 4, a four-bar linkage 14 is shown, which can be used as part of the power transformer. The Articulated quadrilateral: 14 has four joints 41, 42, 43 and 44. Two of the joints, namely the joints designated 41 and 42, are fixedly connected to the device frame 9. The actuator 1 is on a rigid element

attached, which is connected to the other two joints 43 and 44. This arrangement allows for displacement of the actuator along a track and prevents movement that deviates from this track. If the four joints, as shown here, are arranged at the corners of a parallelogram, the quadrangle formed by the position of the joints remains a parallelogram even when displaced along the path, albeit at a different angle, and the actuating member 1 is displaced in parallel. The

The four-bar linkage is shown again in a second position without hatching to illustrate the parallel shift. This parallel shift is particularly useful when it is a plate-shaped one as shown here

Actuator acts. The plate-shaped

Actuator 1 is shown here in side view. One side of the four-bar linkage is used as a lever 13 for

Power transmission to the flexible section 3 ^Λ of

Kraftübertragers trained. A similar

Of course, four-bar linkage can also be connected to the second actuator.

FIG. 5 shows an embodiment of the invention

Force training device 10 in perspective view. This is a weight training device in the form of a leg press. In addition to the previously discussed elements Here, a seat 51 with a seat 52 and a backrest 53 is attached to the machine frame 9. Various

Adjustment elements leave a on the physique of

Adjusting person adjusted position of the seat 51 and slope of the backrest 53. The first and second actuators 1, 2 are formed as plate-shaped pedals for actuation with the feet. Both

Actuators 1, 2 are mounted on a four-bar linkage 14 and are guided as described in the explanation of Figure 4 on a track. Weight elements 15

(Only one of two is visible in this illustration) are in contact with the flexible portion 3 ^λ of

Kraftübertragers and keep it under tensile load. The forces are balanced so that the actuators 1, 2 are in different positions without external force in a rest position. The flexible section 3 of

Kraftübertragers runs over the pulley 4. Bei

Force on the actuators 1 and 2, the spring element 5 is compressed, the axis of the guide roller and its suspension are lowered, which is about the

Lever mechanism 6 here as a mechanical pointer

executed pointer element 7 moves upward. Directly in the field of vision of the person exercising the extent of the pointer deflection and thus the force exerted on the mark 8 can be read.

Figure 6 shows the strength training device of Figure 5 in three different positions of the actuators 1 and 2. For better visibility of the movable elements is in this illustration of that part of the strength training device where the seat is mounted, omitted. FIGS. 6a, 6b and 6c show a front view from the perspective of a person exercising. Figs. 6d, 6e and 6f show this

Weight training device in side view.

In Fig. 6a is a longitudinal axis of the plate-shaped actuating members 1 and 2 and their Verschwenk- inkel 61 and 62 drawn with dotted line. The pivoting angles change from figure to figure, but not for reasons of clarity

drawn.

In Fig. 6a and Fig. 6d, the first actuator 1 in a seat 51 closer end point of the possible path of the first actuator. In this location is the

Pivoting angle 61 small.

In Fig. 6b and Fig. 6e are the two actuators 1, 2 in the context of their opposite movement at the same distance from the seat. The actuator 2 disappears in the side view behind the actuator 1. The two pivoting angles 61 and 62 are the same size.

In Fig. 6c and Fig. 6e, the first actuator 1 has arrived in a seat 51 farther end of the possible path. An element of the four-bar linkage touches a stop that defines the end position. With a

counteracting movement actuator 2 has arrived in the seat closer end position.

In Fig. 6f, the view is free on the pivoting mechanism 63, the pivoting angle of the second Actuator 2 varies depending on the position along its path.

The angle between the marked axis of the

Actuators and the vertical varies between 5 ° in the seat nearer endpoint and 15 ° in the seat farther endpoint, i. the pivoting angle changes by 10 ° over a cycle of movement. In this arrangement, the angle between the indicated axis corresponds to

Actuators and the perpendicular to the angle between the axis of the foot and the plane of symmetry of the body of the exercising person. The on the actuator

Supported foot makes the pivoting around the pivoting angle with. The entire sequence of movements is thus ideally adapted to a natural movement determined by the function of the joints.

Coming back to the transmission factors α and ß, it is explained here that, of course, at each

Place in the power transmission force and drag in the

This means for the forces acting on the flexible section (3 ^Λ ) of the force transmitter, that oc-Fl = ß · F2, which means that the ratio of forces (Fl: This also means that apart from a symmetrical arrangement with identical force transmission factors (a = β) and therefore equal forces (Fi = F ₂ ), it is also possible to provide a force training device in which, for example, for the treatment of a weakened Body side, unequal forces are exerted on the first and second actuator. The pointer replacement position then depends on α-Fl and can be used by appropriately calibrating a scale to indicate Fl (or F2).

first actuator

second actuator

Power transformer

flexible section of the power transmitter

idler pulley

spring element

lever mechanism

pointer element

Marking (reading aid for pointer element)

implement frame

Strength training device

2 deflecting elements

lever

bar linkage

weight element

Housing (the pulley)

guide

pull bar

2, 43, 44 Joints of a four-bar linkage

Seat

seat

backrest

2 swivels

Which can pivot mechanism

Force acting on the first actuator Force acting on the second actuator First force transmission factor

second power factor

Claims

claims

1. strength training device (10) with a device frame (9), - a first actuator (1) and a second actuator (2), a power transformer (3), the first and the second actuator (1, 2) connecting and a flexible portion (3 ^Λ ) having, which is displaceably guided over a deflection roller (4) and whose legs are each operatively connected to one of the actuating members (1, 2) with respect to power flow, a spring element (5), force-transmitting between the axis of the guide roller (4) and the device frame (9) connected, a lever mechanism (6) and a pointer element (7), wherein the lever mechanism (6) a displacement of the axis of the deflection roller (4) in a deflection of the

Hand pointer element (7).

Second strength training device (10) according to claim 1, wherein the force transmitter (3) comprises at least one lever (13) with respect to the device frame (9) fixed axis of rotation.

3. strength training device (10) according to any one of the preceding claims, wherein the force transmitter (3) at least one Articulated quadrilateral (14), wherein two of the joints of the four-bar linkage (14) with the device frame (9) are fixedly connected.

4. strength training device (10) according to any one of the preceding claims, wherein a weight element (15) with the flexible portion (3 ^X ) of the force transducer (3) is operatively connected and exerts a pulling force thereon.

5. strength training device (10) according to claim 4, wherein the

Strength training device comprises several weight elements (15), and their forces on the actuators (1, 2)

balanced.

6. strength training device (10) according to any one of the preceding claims, wherein a first force transmission factor (a) between the first actuator (1) and the first leg of the flexible portion (3) of the power transformer (3) and a second power transmission factor (ß) between the second actuator (2) and the second leg of the flexible portion (3 ^λ ) of the power transformer (3) are equal.

7. strength training device (10) according to one of the preceding claims with at least one element for determining the position of a person exercising, in particular one

Seat, a backrest or a lying surface.

8. strength training device (10) according to any one of the preceding claims for training the arm muscles, wherein the

Actuators (1, 2) are designed as handles.

9. strength training device (10) according to one of claims 1 to 7 for training the leg extensors, wherein the

Actuators (1, 2) are designed as padded cylinder transversely to a lever.

10. strength training device (10) according to one of claims 1 to 7, designed as a leg press, with a seat made of seat and backrest,

formed as a plate-shaped foot pedal first and second actuator (1, 2), both of which are displaceable along a path between a seat nearer the end point and a seat farther endpoint.

11, strength training device (10) according to claim 10, wherein the actuating members (1, 2) are each connected to a four-bar linkage (14) and the joints of the four-bar linkages are arranged in the form of a parallelogram.

12. strength training device (10) according to claim 11, wherein the actuating members (1, 2) in the plane of the sole of the foot can be pivoted and an acting on the respective four-bar linkage pivoting mechanism (63) pivoting the Angle (61, 62) depending on the position of the actuating member (1, 2) on its path adapts.

13. The strength training device (10) of claim 12, wherein the pivoting angle between the seat nearer endpoint and the seat more distant endpoint varies by 10 °.

14. strength training device (10) according to any one of the preceding claims, wherein the flexible portion (3) of the

Kraftübertragers (3) is a rope, a belt, a toothed belt or a chain.

15. strength training device (10) according to any one of the preceding claims, wherein the pointer element (7) is a mechanical pointer or a light pointer.

16. strength training device (10) according to any one of the preceding claims, wherein the strength training device (10) a

Marking (8) for reading the position of the pointer element (7).

17. A method for training the arm or leg muscles of a person using a strength training device (10) according to one of the preceding claims, wherein - a hand resp. one foot of the person is in contact with the first actuator (1) and the other hand, respectively. the other foot is in contact with the second actuating member (2), the first actuating member (1) is moved back and forth along a path, - the second actuating member (2) is moved counter to the first actuating member (1), a resistance force ( Fi) of the first

Actuator (1) by a corresponding force exerted (F ₂ ) on the second actuator (2) and

is effected conversely, and the exercising person by observation of the

Zeigerauslag the pointer element (7) and adjustment of the applied forces (Fi, F ₂ ) holds the pointer deflection over the entire movement in a predetermined range.