EP3481514A2

EP3481514A2 - Main structure for an exercise machine, and method for manufacturing an exercise machine main structure

Info

Publication number: EP3481514A2
Application number: EP17749600.7A
Authority: EP
Inventors: Joachim Koller
Original assignee: Milon Industries GmbH
Current assignee: Milon Industries GmbH
Priority date: 2016-07-11
Filing date: 2017-07-11
Publication date: 2019-05-15
Also published as: WO2018010840A2; WO2018010840A3; JP2019521823A; DE102016008347A1; CN109641141A

Abstract

The invention relates to a main structure for an exercise machine used for performing strength training exercises on a lever arm about an exercise machine shaft, said main structure comprising a source of resistance for applying an operating resistance to the exercise machine shaft; the source of resistance includes a drive assembly comprising driving components, and a control unit comprising controlling components, the drive assembly and the control unit being spaced apart from each other. Also disclosed is a method for manufacturing an exercise machine main structure.

Description

Device body for a strength training device and

Method for producing a device body

The invention relates to a device body for a strength training device for performing strength training exercises on a lever arm to a training shaft, a strength training device with such a device body and a method for producing a device body. In recent years, electronic components have increasingly found their way into weight-training devices in which the desired training resistance is no longer applied by lifting a weight stick, but by means of an electromechanical design of the resistance element of the weight training device, wherein a suitably controlled electric machine is provided to the exerciser during the exercise Execution of his training movements opposes the desired resistance.

Traditionally, weight-training equipment manufacturers have often been mechanical engineering companies, because weight-training equipment was purely mechanical engineering until a few years ago, and often still have this mechanical character. Among other things, it emerged that the "electrification" of weight-training equipment in the first generations of electromechanically actuated weight-training equipment was less like a revolution than an evolution in terms of the construction of the equipment.

So many electromechanically actuated strength training devices are still built according to a classic principle: on a solid base plate or a solid

Basic support, which supports the device against the ground, a frequently equally solid, substantially vertical component stand is arranged on which the control components, the electric machine and the movable drive components such as rotary shaft and possibly geared flanged, screwed, welded or otherwise suitably attached , This design is often based on the requirements of purely mechanically executed strength training equipment, in which the training force flow often had to be passed through different areas of a training body of the device by the training manipulator, for example via cables to the weight stick. With current electromechanically actuated force training devices, it is frequently observed that the arrangement of the control components and the drive components appears quite arbitrary in these, so that both statically mounted control components and movable drive components are often arranged on various mounting components. Such a design often requires over-dimensioning of the supporting components, which may be undesirable from various viewpoints such as vibration eigenvalues of the device body, weight of the device, costs, maintainability, etc.

In addition, the space in the device is often limited by the arbitrary arrangement of the various components and specially tailored to a device-specific required spatial position of the training wave. An object of the invention is therefore to provide a simpler and / or flexible device body for a strength training device. A further object of the invention may be to specify a production method which makes it possible to produce a simpler and / or flexible device body for a training device.

These objects can be achieved by a device body or a manufacturing method according to the independent claims.

According to a first aspect of the invention, a device body for a strength training device is indicated for performing strength training exercises on a lever arm about a training shaft, wherein the training shaft is rotatable about a training axis of the training device. The device body has a resistance source for applying the training wave with a training resistor, wherein the resistance source has a drive arrangement with one or more drive components and a control unit with one or more control components. According to the invention, the drive arrangement and the control unit are spatially spaced from each other such that in the device body the drive components are arranged on one side and the control components on the other side of an imaginary plane passing through the device body. Because of this spatial tion of the drive assembly and the control unit is a simple design of the device body, which also allows a targeted design of supporting components according to the power flow of training forces in the device body, possible. According to a second aspect of the invention, a device body for a strength training device for performing a strength training exercise on a lever arm about a, in particular single, training wave with a, in particular substantially horizontal or vertical, training rotation axis is specified. The device body has a resistance source for providing a training resistance and a control unit for controlling the training resistance. In addition, the device body has two shaft receptacles spaced apart from one another in a vertical direction and / or in a longitudinal direction of the device body, wherein the device body is set up to connect the training wave to that of the two wave recordings for transmission of a training resistance with the resistance source at which the training wave is arranged. A device body, which allows in this way the inclusion of a single training wave in one of two spatial positions of the device body, can be used by a suitably varied positioning of the training supports on the device body for a variety of different weight training equipment. This makes it possible to realize a high standardization potential by, for example, setting up a device park with the types of strength training devices mentioned at the beginning with only a single type of device body.

The invention is based i.a. on the knowledge that a support frame of the device body must be formed only in those areas for receiving training forces in which the components of the drive assembly are arranged, whereas a scaffold part, which carries a control component, out of this function, only the weight of the control component and possibly From this, it must be able to support the resultant lever forces and moments. Now, if the drive assembly and the control unit are completely separated from each other spatially, it will be much easier to provide a device body that is limited to a limited range of the drive assembly to support the forces and moments occurring during training can.

In weight training devices are usually a spatial position at which the training axis and thus the training wave is to be arranged, and a spatial position at which the training supports or seats are to be arranged for the trainees, essentially fixed to each other. The inventor has now discovered that it is surprisingly possible to use a variety of typical weight training devices such as Chest Press devices, rowing machines, abdominal crunch devices, back extension devices, leg curl devices, leg extension devices. To build devices and other devices all based on a single body of the device when it is set up to record a training wave at two different spatial positions, which can be connected to the resistance source for training. For this purpose, it may be useful in a preferred embodiment to provide a certain area (also referred to as drive space), which is reserved for the drive components; because it must be provided at two spaced locations the possibility to incorporate a training wave. Since the training supports, against which the trainee is supported in the training movement, are fixed in their spatial position for a specific exercise only relative to the position of the training wave (possibly additionally depending on the Hebelarmgestaltung), it is possible to build up on each of the above strength training equipment Assemble a device body with two possible positions of the training wave (of course, each with other support or seat positions).

In order to provide the space required for the two possible positions of the training wave in the device body, it is advantageous according to various embodiments of the invention that the imaginary plane substantially perpendicular to a footprint of the device body or substantially horizontally pers to a footprint of Gerätekör- and / or extends substantially parallel to an outer wall of the device body. Particularly preferably, the imaginary plane extends, for example, in an inclination to the footprint, which corresponds to a slope of a front outer wall of the device body and a parallel thereto formed rear outer wall of the device body. The drive arrangement, which is arranged on one side of the imaginary plane, preferably has an electric drive machine and, if appropriate, transmission components which enable a power transmission between the drive machine and the training shaft. Preferably, the prime mover or the gear components is adapted to receive a training wave at two spaced apart from each other perpendicular or horizontal to a footprint and / or parallel to an outer wall of the body space positions and connect to the resistance source. Preferably, the control unit, which is arranged on the other side of the imaginary plane, electronic components for controlling the training resistance, which control components are normally per se known components such as processors, circuit boards, signal and / or power lines, frequency converter, etc.

Of course, the control unit and the drive assembly must be connected to one another at one or more locations for signal and / or energy transfer, so of course the spatial separation of the drive assembly and the control units according to the invention is also the case if one or more signal and / or Power lines cut the imaginary plane. Likewise, for the purposes of the invention, certain components close to the engine, such as a frequency converter or other electronic components, which are typically arranged spatially on the motor and / or sold with it as a unit, may be arranged on the drive assembly side of the imaginary plane.

According to a preferred embodiment of the invention, the device body on a drive space, which accommodates in particular the drive assembly, and a control space on which accommodates in particular the control unit. In this preferred embodiment, both the drive space and the control space are limited by a frame assembly of the device body and by the imaginary plane. This allows a clear demarcation of a defined space for the drive assembly and a defined space for the control unit, the frame assembly can then be optimized at the different rooms each with respect to the different demands on the force flow to be stemmed.

In order to decouple the drive space and the control chamber, for example also with regard to possible lubricating fluids in the drive space, with respect to other media and / or thermally, according to a preferred embodiment, a partition plate between the drive chamber and the control chamber is arranged, which lies substantially in the imaginary plane. This partition plate may preferably be formed with a metal material, even if it is to additionally serve to provide mechanical rigidity. However, preferably, as the primary means of boosting the drive space and / or or the corresponding side of the imaginary plane according to a preferred embodiment of the frame assembly, in particular on a peripheral frame member of the frame assembly, arranged in the region of the drive space at least one support plate on which carried out the training wave, in particular stored. The support plate is preferably formed with a metal material and preferably has a sufficient wall thickness in order to absorb the training forces that are to be supported on the training shaft to her, and in turn to support the frame of the device body. At least the wall thickness is preferably sufficient to reinforce the frame of the device body on the drive space so that it can support the training forces together with the support plate.

In order to be able to provide a device body with which the above-mentioned various strength training devices can be constructed, the drive space and the carrier plate each have at least two locations (ie spatial positions) at which they are set up to cooperate with one training wave each.

According to a preferred refinement, a replaceable control box for accommodating the control unit is arranged in the control room, preferably in one piece, in order to enable a further simplification of the structure of the apparatus body. In such a control box, the control components of the control unit are preferably arranged substantially, which can be installed so preferably pre-assembled in the device body, and are particularly preferably connected only at a line interface with the drive. Also with respect to the exchange of a control unit, this embodiment is advantageous.

Preferably, a, in particular movable, box mount is arranged on the device body. According to a preferred embodiment, an outer boundary of the device body is formed at least at its edges and corners substantially with at least one frame element of the frame assembly. This makes it possible to perform the device body entirely without separate trim support elements that would otherwise have to be mounted in addition to pure cover plates on the device body to form a pleasing shape of the device body. In an apparatus body formed according to this embodiment, the desired outer shape can already be formed by the frame assembly itself. In order to further simplify the construction of the device body and / or to reduce the necessary manufacturing or assembly costs, according to a preferred embodiment, the lateral outer edges, in particular one facing the trainees and / or a side facing away from the trainees of the device body at least partially , in particular completely encircling, formed with a one-piece frame member, which is preferably formed with a laser cut, bent at its corners, hollow profile.

In order to be able to form the outer shape of the device body in a simple manner by means of the Rahmenbau- group, an envelope of the device body is substantially formed with two of the one-piece frame members according to the above-described embodiment, wherein the two one-piece frame elements arranged parallel to each other and / or by means of frame connecting elements from each other are spaced. To simplify the assembly, according to a preferred embodiment, the frame elements and the at least one support plate each have intermeshing connection points for the positive pre-positioning of the frame members and the at least one support plate to each other. In the present case, a longitudinal extension of the device body is preferably to be understood as meaning a horizontal extension horizontally along a side of the device body facing the trainee. A vertical direction can be understood to mean a vertical to the installation surface of the device body and / or a parallel to a main direction of extension of the device body.

In a preferred embodiment with a horizontally extending training axis of rotation, the two shaft receptacles are spaced apart from one another in the vertical direction and / or transversely to a training axis of the training shaft, wherein each of the shaft receptacles is arranged such that a training wave received thereby is connected to the resistance source for transmission of a training resistance or can be.

According to a preferred embodiment, the device body on a drive carrier, in particular a carrier plate in the context of the invention, on which the two spaced wave recordings are arranged. Each of the shaft receptacles, in particular on this drive carrier, is preferably provided with a shaft recess designed for carrying out the training shaft and / or with at least one bearing receptacle. This allows a simple and stable design of the device body.

In order to simplify assembly of the device body, according to a preferred embodiment of the invention, at least one of, in particular both, shaft receptacles on a shaft bearing for rotatably supporting the training shaft to the training axis.

According to a preferred embodiment, both shaft receptacles are arranged in a drive space, which can be limited in particular by means of an imaginary plane extending through the device body in the sense of the invention and / or by means of a frame assembly of the device body. Preferably, the shaft receptacles are thus arranged separately from a control chamber of the device body.

In order to ensure the simplest possible adaptation of the device body to the installation of a training shaft on one or the other shaft mount, a transmission is provided according to a preferred embodiment, which connects the resistance source with each of the shaft mountings.

According to an alternative embodiment, a transmission is provided which is connected to the torque source for transmitting torque, but is so movable, adaptable and / or switchable, that it with little effort, for example by moving, rotating and / or turning a wave recording interface of the transmission can be easily connected either on the one shaft mount or on the other shaft mount with the shaft. In various embodiments, the transmission can be designed with a cable-pulley arrangement, with a V-belt arrangement and / or with a gear arrangement. The drive carrier may also be formed with the carrier plate and the frame assembly as well as purely with the frame assembly. According to a third aspect of the invention, a strength training device is proposed which comprises a main body according to the invention and at least one upper or at least one lower training lever arm which is connected to the training shaft, which in turn is connected to the resistance source.

A further object of the invention may be to specify a production method which allows the production of a simpler and / or flexible device body for a training device allows. Hereinafter, a method for producing a device body for a training device for performing strength training exercises on a lever arm to a training wave is described, this method can be used both independently of a device body in the context of the invention and for a device body in the context of the invention.

According to a fourth aspect of the invention, a method for producing a device body for a strength training device for performing strength training exercises on a lever arm is indicated around a training wave, comprising the steps of: laser cutting Eckausnehmungen and joints in a metal hollow profile with längskonstantem cross-section; Bending a laser-cut metal hollow profile to a circumferential frame member; Inserting, in particular a plurality, preferably of equal length, frame connecting elements into a first circulating frame element; Inserting a second peripheral frame element at its connection points into free ends of the frame connection elements; Welding the frame members, preferably together at their joints.

The specified production method for the main body of a training device represents with respect to the manufacturing effort of working time and / or number of assembly steps nen orders of magnitude easier manufacturing process for the device body of exercise equipment, compared with the conventional manufacturing and assembly process for strength training equipment with electromechanical resistance elements.

According to a preferred embodiment, the steps are additionally provided: laser cutting of connection points into a metal plate; Inserting the metal plate to the first circumferential frame member by means of the respective connection points as a support plate; Welding the carrier plate to the first circumferential frame element.

In such a method, a device body can be produced, which manages with very few load-bearing components. In the described embodiment, only the two peripheral frame members, a small number of frame connecting elements and the support plate are provided as supporting components, on which preferably the electric machine is fixed and the training shaft is mounted.

According to a preferred embodiment, the steps are further provided: laser cutting of joints in a metal plate; Insert the metal plate to the first and the second circumferential frame member by means of the respective connection points as a partition plate; Weld the partition plate to the surrounding frame elements. Thus, a device body can be produced in a simple manner, which has a control chamber and one of them by means of the partition plate substantially thermally and with respect to exchange of media as far as desired decoupled drive space.

The described manufacturing method for a main body of a training device in the context of the invention allow a very simple construction concept for such a body. For a device body to be produced in this way, only a very small number of different semi-finished products are required: a metal hollow profile long product, preferably made of an aluminum material or a steel material and preferably with a quadrangular hollow cross section, the frame elements and the frame connection elements being manufactured from this semifinished product can; a metal sheet with a greater wall thickness, from which the support plate can be made; a metal plate with a smaller wall thickness, from which the separating plate can be made. Further supporting elements may for example still be holders for a control box. A Aufstellflächen boom for arranging a training seat and / or a training support can be arranged as part of the device body at this or considered as an independent element.

Advantageous embodiments of the various aspects of the invention are the subject of the dependent claims. Other features, advantages and applications of the invention will become apparent from the following description taken in conjunction with the figures. It show, partly strongly schematized,

1 a) a device body according to an embodiment of the invention in one

Side view;

Figure 1 b) the device body of Figure 1 a) in a front view.

Figure 1 c) the device body of Figure 1 a) in a plan view.

2 shows the device body of Figure 1 in an oblique view. FIG. 3 shows the device body according to FIG. 1 in a further oblique view; FIG.

and 4 shows a device body according to a further embodiment of the invention in a side view. and FIGS. 5a-b show a section of a frame element of a device body according to an embodiment of the invention before and after the laser cutting of a corner.

In Fig. 1, three different views of a device body 1 are shown, wherein in Fig. 1 a) a side view of the training side is shown in Fig. 1 b) is a frontal view, wherein the training side is located on the right, and in Fig. 1 c ) is a top plan view with the training side down.

The device body 1 shown in FIGS. 1 a) to c) has two one-piece frame elements 2 and 4, which are spaced apart from one another by means of a plurality of frame connecting elements 3 and are arranged parallel to one another. The device body 1 additionally has a separating plate 6 and a carrier plate 8.

The partition wall 6 can either be formed purely as a separating plate, or - as shown in Fig. 1 - with a separating plate 10 and side separation profiles 12. Depending on the expression are then formed either on the partition plate 10 or on the side separation profiles 12 projections 14.1 as plug connection points. Also on the frame member 2 projections 14.2 are designed as plug-in connection elements. The support plate 8 has recesses 16 which are positioned to match the positions of the projections 14.1 and 14.2, wherein the recesses 16 constitute the plug connection elements of the support plate 8 and are adapted to be positively connected in each case with a corresponding projection 14. The support plate 8 has an upper rotary shaft receptacle 18 and a lower rotary shaft receptacle 20, which are adapted to receive a training shaft (not shown). To the rotary shaft receptacles 18 and 20 respectively bearing receptacles 22 and 24 are arranged, on each of which at least one bearing for the rotary shaft can be attached. In addition, a motor recess 25 is provided in the support plate 8, which may serve as a source of resistance for the Traininqsqerät example, a mounting of an electric machine 34. The partition 6 extends in an imaginary plane E, which thus also extends through the device body. In Fig. 1 a), the plane E is rectangular cut through the dash-dot axis E, in Fig. 1 c) is symbolically represented by the oblique plan view of a rectangular section E of the plane. The device body 1 and in particular its enveloping volume demarcated by the peripheral frame elements 2 and 4 are cut through the plane E and subdivided into a drive space 26 and a control space 28. In the control chamber 28, a control box 30 is arranged, in which control components 32 are arranged. In the drive space 26, an electric machine 34, a training shaft 36 and a gear, not shown, for connection of the electric machine 34 with the training shaft 36 is arranged. The control components 32 of the control unit 33 arranged in the control chamber 28 are connected to the drive components 34, 36 only by means of a line (not shown) for signal and / or energy transmission. By this arrangement, a spatial separation of the drive assembly 35 and the control unit 33 takes place such that the essential control components are arranged on one side of the plane E and the main drive components on the other side of the plane E. Thus, on the one hand enough space for the drive provided be, in the present embodiment, the inclusion of a training wave at an upper position and a lower position 20 allows. On the other hand, a simple preassembled installation of the control components 32 can be provided in the control box 30, wherein the control box 30 can also be easily replaced.

From Fig. 1 a) it can be seen that the peripheral frame members 2 and 4 have sloping high walls and thus give the device body a shape that is similar in side view substantially a parallelogram. According to the inclination of the high walls of the open frame members 2 and 4, the plane E is also inclined, so that it runs parallel to the high walls of the connecting elements 2 and 4. In a conventional cuboid device body, not shown, the imaginary plane could run in an analogous manner perpendicular to the footprint.

In Fig. 2, the same embodiment is shown in an oblique view, which makes particular clear how the arranged in the representation in front of the plane E drive space 26 through the support wall 8 for receiving power flow from training is amplified, while arranged in the representation behind the plane E control room allows a very simple installation of a preassembled control box 30 with the required control components 32, because it is very easily accessible.

5 The function of the partition wall 6 with its separating plate 10 and the side separation profiles 12 is clearly shown in FIG. The separating plate 10 is provided at its corners with recesses 38 such that it can be inserted during assembly in the frame assembly with the peripheral frame members 2 and 4. By means of the design of the separating plate 10, the degree of thermal and media-related decoupling between the drive space 26 and the control space 28 can be determined. The larger the recesses 40 are formed, the lower the decoupling, the lower the weight of the device body. The appropriate compromise depends on the application.

In Fig. 4 and the associated sectional view A - A, a device body 401 is shown, which allows the inclusion of a single training wave 436 on one of two freely selectable by the device manufacturer or a gym operator wave shots 418 or 420 at different spatial positions in the embodiment at a higher or a lower spatial position. The training wave 436 can then -

20 depending on the selected spatial position 418 or 420 - about an upper training rotational axis Ai or a lower training rotational axis A2 rotate to allow a resistance-applied training movement. Thus, a device body can be provided, which can serve in almost the same design as the basis of a variety of strength training equipment, each with a different exercise movement.

-25

For this purpose, the device body 401 has two shaft bearings 440 (above) and 442 (below) which are spaced apart in the vertical direction and are shown purely schematically in the detail A-A to FIG. 4 in their arrangement on a drive carrier 408. The representation of the shaft bearings 440 and 442 in detail A - A serves only as a sketch and for the sake of simplicity 30 is not shown as a complete waveguide.

The drive carrier 408 is presently designed as a support plate analogous to the embodiment according to FIGS. 1 to 3. The drive carrier 408 designed as a carrier plate has at its outer edges a plurality of recesses 414, which are designed to connect the drive carrier 408 to the frame element 402, preferably way by means of a plug connection with corresponding plug connection elements of the frame member 402 (eg analogous reference numeral 510 in Fig. 5b) and / or by means of a welded connection at the points at which a recess 414 is arranged.

The shaft 436 is connected to the resistance source 434 for transmitting torque by means of a V-belt 444, the shaft 436 having a spline portion 437. The resistance source 434 is suitably flanged to the frame members 402 and / or 404.

The representation of the transmission in Fig. 4 with a V-belt transmission is purely exemplary. Usable for the purposes of the invention are also any other types of transmission such. a gear transmission and / or a cable transmission. Likewise, the central location of the resistance source 434 is not mandatory; An arrangement in the longitudinal axis of the training shaft 436 (at the upper or lower spatial position) is also within the meaning of the invention.

In the embodiment of FIG. 4, it is now possible with relatively little effort to introduce the shaft 436 instead of at the upper shaft receiving 418 on the lower shaft receiving 420, the latter shown with the reference numeral 436 '. For connection to the resistance source 434, in the exemplary embodiment, only the V-belt would have to be guided downwards around the shaft, rather than upwards around the shaft. The conversion is easy. Whether the support plate 408 is basically equipped with two specifically designed components for supporting the shaft - ie in the representation of the components 440 and 442 - or only with one of these components at the point where the shaft is to be mounted in an individual case, is in Meaning of the invention irrelevant. Because as a wave recording in the context of the invention, both of the recesses at the points 418 and 420 to understand, as well as each arrangement of a shaft bearing 440 or 442 on one of the recesses 418 or 420. Relevant is the possibility at these points a wave through to be able to insert the drive carrier 408 into a drive space 426 of the device body 402.

The drive space 426 is required, for example, to allow a re-assembly of the transmission (in the exemplary embodiment V-belt 444). This undisturbed can be made from the presence of non-drive components, in this embodiment, a partition plate 406 is provided through which an imaginary plane E, wherein on the drive side side of the plane E, the essential drive components, and on the drive remote side of the plane E, the essential control components 432 in particular a control box 430, are arranged and thus separated from the drive components. The resistance source 434 designed as an electrical machine and the further drive components of the drive arrangement 435 are connected to the control components 432 of the control unit 433 by means of a signal and power line 446.

FIG. 5 shows by way of example the manner in which the one-part circumferential frame elements 2 and 4 according to the exemplary embodiment from FIG. 1 can be produced by laser cutting according to a method according to the invention. In Fig. 5a is a plan view of a section of a square hollow profile 501 is shown made of a steel material. The dashed lines 502 and 503 mark the transition to the square cavity 504 inside the square profile 501. The dotted lines 506 and 507 mark cutting lines for the laser cutting, where along the cutting line 506, the profile is cut out in the entire depth, along the cutting line 507, the profile is only cut out, for example, to half of the profile.

In Fig. 5b, the portion of the profile 501 is shown after cutting out the addressed parts along the cutting lines 506 and 507, after bending about a bending axis T, wherein the leg cut on the line 506 unaffected material region 505 is plastically deformed , The two legs 508 and 509 of the profile 501 are bent so long to each other until the cut edges of the cutting line 506 abut each other. If necessary, the cut edges can be soldered or welded.

Along the section line 507, a recess 510 has been removed, which can serve, for example, for inserting plug-in connection points of a carrier plate and / or a separating plate. By providing a plurality of spaced-apart cutting lines analogous to the Lin 506, a circumferential frame member for a frame assembly of an apparatus body in the context of the invention can be provided.

Claims

1 . Apparatus body (1; 401) for a strength training apparatus for performing strength training exercises on a lever arm about a training shaft (36; 436) comprising a resistance source (34; 434) for applying training resistance to said training wave, said resistance source comprising a drive assembly (35; 435 ) with drive components (34, 36; 34, 434, 436, 440, 442, 444) and a control unit (33; 433) with control components (32; 432),

characterized in that

the drive assembly and the control unit are spatially so objected to each other, that in the device body, the drive components on one side and the control components on the other side of an extending through the device body, imaginary plane (E) are arranged.

2. Device body according to claim 1, wherein the imaginary plane substantially

perpendicular or horizontal to a footprint and / or runs parallel to an outer wall of the body.

3. Apparatus body according to one of the preceding claims, comprising a drive space (26; 426) and a control space (28), both spaces being delimited by a frame assembly (2, 3, 4; 402, 404) of the device body and the imaginary plane.

4. Apparatus body according to one of the preceding claims, wherein a partition plate (6;

406) is arranged between the drive space and the control chamber, which is located substantially in the imaginary plane.

5. Device body according to one of the preceding claims, wherein on the frame assembly, in particular on a peripheral frame member (2; 402) of the frame assembly, in the region of the drive space at least one support plate (8; 408) is arranged, carried out on the training wave, in particular stored , is.

Apparatus body according to one of the preceding claims, wherein the drive space and the carrier plate each have at least two spatial positions (18, 20, 418, 420) on which they are arranged to cooperate with the training wave.

Apparatus body according to one of the preceding claims, wherein in the control room a one-piece interchangeable control box (30; 430) is arranged for receiving the control unit.

8. Device body according to one of the preceding claims, the outer boundary is formed at least at its edges and corners substantially with at least one frame member (2, 4, 402, 404) of the frame assembly.

9. Device body according to one of the preceding claims, wherein the lateral outer edges of the device body are at least partially, in particular completely encircling, formed with a one-piece frame member (2, 4, 402, 404), which is laser-cut, bent at its corners hollow profile (501). is trained.

10. Apparatus body according to one of the preceding claims, whose envelope is substantially formed with two of the one-piece frame members, which are arranged parallel to each other and / or by means of frame connecting elements (3) are spaced from each other.

1 1. Device body according to one of the preceding claims, wherein the frame elements and the at least one support plate have intermeshing connection points (14, 16; 414; 510) for the positive pre-positioning of the frame elements and the at least one support plate to each other.

12, strength training device, comprising a device body according to one of the preceding claims and at least one training lever lever, which is connected to a training shaft, which is connected to a resistance source. A method of manufacturing a device body (1; 401) for a strength training apparatus for performing strength training exercises on a lever arm about a training shaft (36; 436), comprising the steps of:

- Laser cutting Eckausnehmungen (506) and connecting points (507) in a metal hollow profile (501) with a longitudinally constant cross section,

Bending a laser-cut metal hollow profile to form a peripheral frame element (2, 4, 402, 404),

Inserting frame connecting elements (3) into a first circulating frame element,

Inserting a second peripheral frame element at its connection points into free ends of the frame connection elements,

- Welding of the frame members to each other at their connection points (14, 16, 414, 510).

A method according to claim 14, comprising the steps of:

Laser cutting of joints into a metal plate,

Inserting the metal plate against the first circumferential frame element by means of the respective connection points as carrier plate (8; 408),

- Welding of the carrier plate to the first circumferential frame member.

A method according to claim 14 or 15, comprising the steps of:

Laser cutting of joints into a metal plate,

Inserting the metal plate against the first and the second peripheral frame element by means of the respective connection points as a separating plate (6; 406),

- Welding the partition plate to the peripheral frame elements.