WO2023147912A1

WO2023147912A1 - Connector for connecting at least two training devices

Info

Publication number: WO2023147912A1
Application number: PCT/EP2022/083861
Authority: WO
Inventors: Jens Friebel
Original assignee: Sissel International GmbH
Priority date: 2022-02-04
Filing date: 2022-11-30
Publication date: 2023-08-10
Also published as: AT525860B1; AT525860A1

Abstract

The invention relates to a connector (1) for connecting at least two training devices (4) for stimulating the back muscles associated with a person's spine, wherein the training devices (4) have two rows of shaped bodies (23), which run one beside the other in the longitudinal direction (29) thereof, are in particular not offset from one another, are connected to one another via connecting portions (25) and project away from a base plane (30) that runs through the connecting portions (25). Furthermore, a through-opening (26) is formed in each training device (4) between at least two adjacent shaped bodies (23) of a row and the associated two adjacent shaped bodies (23) of the other row. The connector (1) has a base element (6) with two ends (7, 8), extending in its longitudinal direction (5). At least two extensions (9, 10), which can each be inserted through a through-opening (26) of one of the training devices (4), project substantially perpendicularly and upwards away in the vertical direction from the base element (6). One of the extensions (9, 10) is in each case arranged in the region of each of the ends (7, 8) of the base element (6), and an elongated shaped piece (11), which projects substantially perpendicularly and upwards away in the vertical direction from the base element (6), is arranged between the extensions (9, 10) or optionally two of the extensions (9, 10).

Description

CONNECTOR FOR CONNECTING AT LEAST TWO EXERCISE DEVICES

The invention relates to a connector for connecting at least two training devices for stimulating the back muscles associated with a person’s spine, the training devices having two rows of shaped bodies running next to one another in their longitudinal direction, in particular not offset from one another, which are connected to one another via connecting sections and from one through the Connecting sections extending base level protrude, have, and wherein in each training device between at least two adjacent shaped bodies in a row and the associated two adjacent shaped bodies in the other row a through-opening is formed.

The invention also relates to a device for enlarging a training device and a training arrangement comprising a training device and a device for enlarging the training device.

Training devices for stimulating the back muscles associated with a person's spine are already known. Such training devices preferably have two rows of shaped bodies running next to one another in the longitudinal direction, in particular not offset from one another, the shaped bodies preferably having a spherical shape, in particular the shape of a sphere or hemisphere. By positioning a person on the training device or the positioning of the training device on a person, so that the person's spine is arranged between the rows of shaped bodies, the muscles arranged on the side of the spine can be stimulated and trained.

During training of the back muscles, the shaped bodies of such training devices are therefore under or placed on the back of a reclining person so that the rows of shaped bodies are arranged on both sides along the person's spine. In the ideal case, the training device runs from the back of the head to the sacrum of the person training with it. When performing certain exercises, the balls press on the muscles, ligaments and tendons on both sides of the spine, which stimulates or relaxes them. to be stretched .

When training with such training devices, the back muscles of the spine can be stimulated in a particularly targeted manner. In addition, the training device supports mobilization of the intervertebral joints when performing certain exercises. Such a training device also exerts a massage function on the soft tissue of the back muscles.

A disadvantage of the training devices described above is that these - even if they may. sold in different sizes - have a predefined length. If one and the same training device is to be used for training the back muscles of people of different heights, the training device is too short or too long for some of the people, which can affect the effectiveness of the training. Therefore, for the back muscle training of people of different heights, several training devices must be available that are of different lengths or widths. are large, but this is associated with increased costs.

The invention is therefore based on the object of providing a connector and an enlarging device of the type mentioned at the outset, through which the problem addressed can be avoided as far as possible. In particular, with the connector according to the invention or. the enlargement device according to the invention can be provided to connect or connect multiple training devices in a simple and inexpensive way. Enlarge training devices in order to be able to train people of different sizes particularly effectively.

Furthermore, the invention is based on the object of providing a training combination that also allows particularly tall people to be trained effectively.

This object is achieved according to the invention with a connector having the features of claim 1, with a device having the features of claim 16 and a training compilation having the features of claim 23.

Preferred and advantageous embodiments of the invention are the subject matter of the dependent claims.

According to the invention it is provided that the connector has a base element extending in its longitudinal direction with two ends, that at least two extensions project upwards essentially perpendicularly and in the vertical direction from the base element, each of which can be plugged through a through-opening of one of the training devices, that in each case one of the extensions is arranged in the region of each of the ends of the base element, and that between the extensions or possibly . An elongate shaped piece is arranged between two of the extensions and protrudes substantially perpendicularly and in the vertical direction upwards from the base element.

To connect two training devices, the extension at one end of the connector through a through-opening, in particular the furthest arranged at one end of the training device through-opening, the one training device and the extension at the other end of the Connector plugged through a through-opening, in particular the farthest arranged at one end of the training device through-opening, the other training device.

The extensions are preferably fixed by being inserted in such a way that they do not come loose from the through-openings on their own and that they cannot be pulled out of the through-openings without an increased expenditure of force. The shaped piece rests between the shaped bodies arranged at the ends of the training devices connected to one another and serves as a spacer or as a stabilizer due to its shape adapted to the shaped bodies.

With the connector according to the invention can be the same length or. large but also of different lengths or connect large training devices.

For example, with the aid of the connector, a training device that is designed in length for use with people of average height can be connected with a short, e.g. B. only two or three moldings per row having further training device are connected to train above-average large people can.

Another possible use of the connector according to the invention is to connect two training devices, in particular of the same length, which are arranged parallel to one another, in order to obtain a training compilation that is significantly wider than conventional training devices.

In the context of the invention, a training device is understood to mean, in particular, a training device as described at the outset. Such a training device can have two or more than two shaped bodies per row of shaped bodies. For training success, it is particularly important that there is a stable connection between the training devices and that the connector does not become detached from the training devices during training.

In particular, each of the shaped bodies of the training devices to be connected has at least one contact area designed as a contact point or as a contact surface for stimulating the back muscles. The shaped bodies of one row form pairs of shaped bodies with the associated shaped bodies of the other row arranged next to them transversely to the longitudinal direction, with the shaped bodies of the pairs of shaped bodies forming spaces in which spinal column sections of a spinal column can be accommodated in the longitudinal direction of the rows.

Within the scope of the invention it can be provided that a further extension or at least two further extensions is/are arranged between the extensions arranged in the regions of the ends of the base element. When connecting two training devices, not only the extensions at the ends of the base element, but also the extension or the extensions between them are inserted through through-openings of the training devices. In this way, the training devices are connected to one another with even greater resistance.

In particular, within the scope of the invention, an embodiment is preferred in which the extensions each have a fastening element for fixing the extensions in the respective through-opening in the region of their distal end remote from the base element. Fastening elements of this type can be formed in particular by widenings on the distal ends of the extensions. Preferably, the fastening element is in each case formed monolithically with the extension, but it can also be switched on or off. plugged on, screwed on, or glued on and detachable or be inextricably linked to the extension.

It is also possible within the scope of the invention that the extensions do not have a fastening element and are only force- or can be frictionally fixed in the through-openings, e.g. B. by the extensions are slightly wider than the through-openings, due to the elasticity of the material of the training device and/or the material of the connector, can be inserted into the through-openings and when inserted can only be pulled out of the through-openings with increased effort.

Preferred are embodiments in which the extensions have an essentially round, in particular circular, cross section or in which the extensions have an essentially polygonal, in particular rectangular or diamond-shaped, cross section, preferably with rounded corners and/or concave or convex curved sides. exhibit . The cross-section of the extensions is preferably adapted to the shape of the through-openings of the training devices to be connected in each case so that they can be accommodated or inserted in them as positively as possible. to be fixable. This enables a particularly stable connection.

In a preferred embodiment, it can be provided that the shaped piece has an essentially polygonal, in particular rectangular or diamond-shaped, cross section, preferably with concavely curved sides. Such a shaped piece is preferably adapted to the outer contour of the shaped bodies of the training devices to be connected in each case in order to be able to be placed in them as positively as possible. This also serves to increase the stability of the connection or the stability of the training composition obtainable through the connection.

As an alternative or in addition to this, it can be provided that the shaped piece is spaced apart from the base element to form a distal one end widened . Such a shaped piece also encloses the adjacent shaped bodies at least in sections at the top, so that a particularly stable connection between the two training devices to be connected is further supported.

It is particularly preferred if the shaped piece has at least one side, preferably both sides, a shaped rib projecting in the longitudinal direction of the connector from the shaped piece to the opposite extension and running from the base element in the direction of a distal end of the shaped piece. Such a shaped rib preferably protrudes only a small distance from the extension, but runs essentially over the entire length/height of the shaped piece, ie. H . from the base element to the distal end.

Alternatively or in addition to this, the shaped piece can have a shaped rib projecting away from the shaped piece at right angles to the longitudinal direction of the connector and running from the base element in the direction of a distal end of the shaped piece, at least on one side, preferably on both sides. Such a shaped rib preferably runs essentially over the entire length/height of the shaped piece.

In the connected state of the training devices, the shaped rib(s) are/are clamped between corresponding shaped bodies of the training devices and lie against them. This increases the stability of the connection.

In a preferred form of development it is provided that the molded rib or possibly . several form ribs, preferably all form ribs have a form that tapers away from the shaped piece/have, in particular by flanks of the form rib or the form ribs have a concave curve. Such form ribs are connected Training devices close to the shaped bodies, so that a particularly stable connection is guaranteed.

In particular, within the scope of the invention, an embodiment is preferred in which the base element is positioned between the shaped piece and the adjacent extensions or possibly . between adjacent extensions in each case has a shaped web running linearly in the longitudinal direction of the connector. Furthermore, it is preferred that the base element in the area of at least one of the extensions, preferably all extensions, and/or the fitting, at least on one side, preferably on both sides, has a linear and perpendicular to the longitudinal direction of the connector and from the extension or Fitting has projecting web form away. It is also possible within the scope of the invention for the base element in the area of at least one of the extensions arranged in the areas of the ends of the base element, preferably both extensions, to have a linear extension in the longitudinal direction of the connector towards the respective end of the base element and at right angles away from the extension has projecting web form.

Such a form web or When in use, such shaped webs are arranged, in particular clamped, between shaped bodies of the training devices and increase the stability of the connection.

Also possible within the scope of the invention are forms of execution in which, for example, only some of the extensions or only the shaped piece has the shaped ridges running at right angles to the longitudinal direction, or there is a shaped ridge projecting beyond the extension only in the area of one of the ends.

In a particularly advantageous embodiment, it is provided that the form bar or possibly . several, preferably all, of the form ridges has/have an upwardly tapering shape, in particular in the flanks of the form ridge or . the form webs have a concave curve. In the case of connected training devices, such shaped webs also lie as close as possible to the shaped bodies, so that a particularly stable connection is provided.

It is particularly preferred if the shaped rib(s) and/or the shaped web(s) and/or the shaped piece delimit at least one spherical region running between the shaped piece and one of the adjacent extensions and laterally on the base element.

The shaped ribs and/or shaped webs and/or the shaped piece preferably delimit at least four spherical regions in some areas, which are each arranged on both sides of the base element and are each located between the shaped piece and one of the adjacent extensions. These spherical areas essentially have the shape of a corresponding area of the shaped bodies of the training devices to be connected. The shaped bodies and therefore also the spherical areas are preferably spherical. In the case of connected training devices, for example, two shaped bodies of one training device and two shaped bodies of the other training device, in particular the shaped bodies arranged at the ends of the training devices, are partially accommodated in the spherical regions. D. H . the form ridges and / or form ribs and / or the fitting are close to the shaped bodies, so that partial areas of the shaped bodies are enclosed by the connector or. are included.

In the context of the invention it can be provided that a contact surface, which is formed on one side of the base element, which is opposite a side of the base element from which the extensions protrude, is essentially flat or just runs . Such connectors are particularly easy to produce and are stable on the subsurface. It is preferred if the extensions, the base element and the shaped piece are formed from a plastic, in particular an elastically deformable plastic. Preferably the entire connector is molded from such a plastic. The plastic can be, for example, a thermoplastic polymer such as polyurethane, silicone or rubber. Such a connector has an advantageous elasticity, is easy to clean and can be produced easily and inexpensively.

It is also preferred if the extensions, the base element and the shaped piece are formed monolithically and are foamed, injection molded or cast in one piece. The monolithic form allows for simple and inexpensive manufacture and prevents the formation of grooves in which dirt can collect.

The invention also relates to a device for enlarging a training device for stimulating the back muscles associated with a person’s spine, the training device having two rows of shaped bodies running next to one another in the longitudinal direction, in particular not offset from one another, which are connected to one another via connecting sections and from a Connecting sections extending base plane protrude away, having, and wherein in the training device between at least two adjacent shaped bodies in a row and the associated two adjacent shaped bodies in the other row a through-opening is formed.

According to the invention it is provided that the device is an enlargement element, the two in the longitudinal direction of the device running next to each other, in particular non-staggered, rows of each at least one molded body, the over Connecting sections are connected to each other having. Furthermore, the device has a connecting element arranged in the longitudinal direction of the device or transversely thereto on the enlarging element, which has a base element extending in the longitudinal direction of the device or transversely thereto and with one end protruding away from the enlarging element. In the area of the end of the base element protruding away from the enlargement element, there is an extension which protrudes upwards essentially perpendicularly and in the vertical direction from the base element and can be inserted through a through-opening of the training device and fixed in it.

Such a device can be easily and quickly connected to an existing training device in order to extend it. In this way, training devices can also be used easily and inexpensively for taller people.

Within the scope of the invention, the enlarging element is also regarded as a training device and is preferably adapted in shape and structure to the training device to be lengthened, but as a rule it is significantly shorter than this. It is also possible that the enlargement element has only two shaped bodies, d. H . only one molding per row.

In particular, the enlarging element has some or all of the features of the training devices already described.

Within the scope of the invention, the device can be monolithic or the enlarging element and the connecting element can be separate components connected to one another.

If the device according to the invention is monolithic, it can be manufactured particularly easily and inexpensively. In such embodiments, there are fewer components, so that there is also a more stable connection between the enlargement element and the training device.

In the event that the enlargement element and the connecting element are separate components that are connected to one another, the connecting element can be a connector according to the invention. In such devices, several, different sized magnification elements can be present, so that a different size or long magnifying element can be used . Training facilities with such facilities can therefore be enlarged particularly flexibly.

In devices according to the invention consisting of separate components, it is preferred if the enlarging element has two or more than two shaped bodies in each row, which are connected to one another via the connecting sections and protrude away from a base plane running through the connecting sections. In the case of such enlargement elements, a through-opening is formed between in each case two adjacent shaped bodies in a row and the associated two adjacent shaped bodies in the other row. Furthermore, one end of the connector is the end of the connecting element that protrudes away from the enlarging element, and the other end is an end of the connecting element that is connected to the enlarging element. The extension in the area of the other end connected to the enlarging element is inserted through the through-opening of the enlarging element and fixed in it. In such embodiments, the enlarging element has at least two shaped bodies in each row.

In a preferred form of further development of the device according to the invention, the connecting element is the one according to the invention Connector whose shaped webs and/or shaped ribs and/or shaped piece delimit at least one spherical area, preferably several spherical areas. In such a device is one or possibly . are several of the moldings of the enlargement element essentially a perfect fit in the or the spherical area / s arranged. the the spherical area(s) encloses/encloses essentially the shaped body(s) of the enlargement element at least partially. This ensures a particularly stable connection between the connector and the enlargement element.

A distance between the shaped piece and at least one of the extensions adjacent thereto preferably corresponds essentially to a width of the connecting section of the enlargement element arranged between the shaped piece and the extension. The distance between the shaped piece and the extension adjoining it can also be slightly less than the width of the connecting section, so that the connecting section can be fixed in a clamped manner between the shaped piece and the extension. In such embodiments, enlargement elements whose rows only have a single shaped body can be connected to the connector and attached to a training device.

The invention also relates to a training set that has a training device for stimulating the back muscles associated with a person's spine. The training device has two rows of shaped bodies running next to one another in its longitudinal direction, in particular not offset from one another, which are connected to one another via connecting sections and protrude away from a base plane running through the connecting sections. Furthermore, in the training device between at least two adjacent shaped bodies in a row and the associated two adjacent shaped bodies in the other row Through opening formed. According to the invention, it is provided that the training device is connected to the above-described device according to the invention for enlarging the training device.

Within the scope of the invention, the device for enlarging can be arranged in front of or behind the training device, viewed in the longitudinal direction. Particularly tall people can be trained with such training configurations.

It is also possible for the device for enlarging to be arranged laterally and parallel to the training device, viewed in the longitudinal direction. With such training combinations, additional training exercises can be carried out and muscles that are spaced apart from the spine can be trained.

Further details, features and advantages of the invention result from the following description with reference to the attached drawings, in which preferred embodiments are shown. It shows :

Fig. 1 is a side view of a connector according to the invention, FIG. 2 is a plan view of the connector according to the invention,

Fig. 3 an isometric view of the connector according to the invention,

Fig. 4 is an isometric view of an enlargement element of a device according to the invention,

Fig. 5 is an isometric view of the device according to the invention, and

Fig. 6 is an isometric view of a portion of a training assembly according to the present invention.

Fig. 1 shows a side view, FIG. 2 is a plan view and FIG. 3 is an isometric view of a connector 1 according to the invention or . of a connecting element 2 of the device 3 according to the invention.

The connector 1 serves to connect at least two training devices 4 .

The connector 1 has a longitudinal direction 5 in which an elongate base element 6 of the connector 1 extends.

The base element 6 has a first end 7 and a second end 8 , a first extension 9 being formed in the area of the first end 7 and a second extension 10 being formed in the area of the second end 8 .

A shaped piece 11 is arranged on the base element 6 between the extensions 9 , 10 , which, like the extensions 9 , 10 , projects essentially vertically and upwards away from the base element 6 .

In the region of their distal end 12 spaced apart from the base element 6 , the extensions 9 , 10 have a fastening element 13 in the form of a widening of a cross section of the extension 9 , 10 .

Formed webs 14 are formed on the base element 6 between the extensions 9 , 10 and the shaped piece 11 and from the extensions 9 , 10 to the ends 7 , 8 of the base element 6 . The shaped webs 14 have a shape that tapers towards the top. Lateral flanks 17 of the shaped ridges 14 each approach one another from a bearing surface 15 of the base element 6 to a crest 16 of the respective shaped ridge 14 and have a concave curvature.

On both sides, in addition to the extensions 9, 10 and the shaped piece 11, the base element 6 has further shaped webs 14 shaped in this way perpendicular to the longitudinal direction 5 of the connector 1 and from the respective extension 9, 10 or Shape 11 protrude away.

Formed ribs 18 are additionally formed on the shaped piece 11 , each running away from the base element 6 towards a distal end 19 of the shaped piece 11 . Two of the shaped ribs 18 each protrude a little from the shaped piece 11 to the adjacent extension 9 , 10 , and two of the shaped ribs 18 project away from the shaped piece 11 at right angles to the longitudinal direction 5 of the connector 1 .

The shaped ribs 18 have a course that tapers away from the shaped piece 11 to a crest 20 of the respective shaped rib 18 and have concavely curved flanks 21 .

The shaped webs 14 and shaped ribs 18 delimit, at least in certain areas, spherical areas 27 which are arranged or arranged on both sides of the base element 6 . get lost .

For example, between the shaped piece 11 and the first extension 9 on both sides of the base element 6, a spherical area 27 is formed in some areas by the shaped rib 18 directed towards the extension 9, the shaped web 14 running between the shaped piece 11 and the extension 9, which is perpendicular to the longitudinal direction 5 of the Connector 1 from the shaped piece 11 projecting away form rib 18 and perpendicular to the longitudinal direction 5 of the connector 1 from the first extension 9 away projecting form web 14 limited. In the same way, two spherical areas 27 are delimited in areas between the shaped piece 11 and the second extension 10 .

Likewise, the shaped ridges 14 running to the ends 7 , 8 of the base element 6 together with the shaped ridges 14 projecting away on both sides of the extension 9 , 10 at right angles to the longitudinal direction 5 of the connector 1 also delimit two spherical regions 27 in each case. In the embodiment shown, the entire connector 1 , including the base element 6 with the shaped webs 14 , the extensions 9 , 10 and the shaped piece 11 with the shaped ribs 18 , is formed monolithically.

Fig. 4 shows an enlargement element 22 of the device 3 according to the invention and FIG. 5 shows the device 3 according to the invention for enlarging a training device 4 in each case in an isometric view.

The enlargement element 22 is also regarded as a training device 4 within the scope of the invention and has largely the same features as one of the training devices 4 or 4 to be connected to the connector 1 according to the invention. a training device 4 that can be enlarged with the device 1 according to the invention.

Like the training device 4, which can be enlarged with the device 3 according to the invention, the enlarging element 22 has two rows of shaped bodies 23, which extend in the direction of a longitudinal direction 24 of the device 3 or of the enlargement element 22 run. The shaped bodies 23 protrude on both sides of a base plane 30 running essentially horizontally.

Adjacent shaped bodies 23 of the enlargement element 22 in each row are connected to one another via connecting sections 25, as are shaped bodies 23 arranged next to one another and each belonging to a different row.

Between at least two adjacent moldings 23 in a row and the associated, d. H . A through-opening 26 is formed in each of the two adjacent shaped bodies 23 of the other row that are arranged next to them. The training device 4, which is to be enlarged with the aid of the device 3 according to the invention, or the training devices 4 that are to be connected with the help of the connector 1 according to the invention have the features described above for the enlargement element 22 .

However, each row of shaped bodies 23 in the training devices 4 preferably comprises more than two shaped bodies 23 , for example twelve or fourteen shaped bodies 23 , with each row of shaped bodies 23 of the enlargement element 22 preferably having only two or three shaped bodies 23 . In the embodiment shown, the enlarging element comprises four shaped bodies 23, i. H . two per row, between which a single through opening 26 is formed.

The device 3 according to the invention has a connecting element 2 arranged in the longitudinal direction 24 of the device 3 on the enlargement element 22 , which in the illustrated embodiment is the connector 1 already described.

The first end 7 of the base element 6 of the connector 1 serving as the connecting element 2 is arranged in the area of the enlarging element 22 , with the first extension 9 being inserted through the through-opening 26 of the enlarging element 22 . Because of the fastening element 13 having the shape of a broadening of the cross section of the extension 9, the first extension 9 is fixed in the through-opening 26 and can only be pulled out of it with increased effort.

The second end 8 of the base member 6 of the connector 1 serving as the connecting member 2 protrudes from the enlarging member 22, the second extension 10 being adequately connected to the first extension 9 through a through opening 26 of a device incorporating the inventive device 3 to be extended training device 4 can be plugged in and fixed in this.

In the embodiment shown, the enlarging element 22 and the connecting element 2 of the device 3 according to the invention, as already described, are separate components that are detachably connected to one another.

The shaped ribs 18 and shaped webs 14 of the connecting element 2 designed as a connector 1 according to the invention delimit spherical regions 27 at least in regions. The shape of the spherical areas 27 is adapted to the shape of the shaped bodies 23 of the training devices 4 or of the enlargement element 22 and of the training device 4 which can be enlarged with the device 3 according to the invention and can therefore also have a different shape.

FIG. 6 shows a training set 28 according to the invention in an isometric view, the training set 28 comprising a training device 4 and a device 3 according to the invention for enlarging the training device 4 .

The training device 4 of the training set 28 has the features already described for the enlargement element 22 of the device 3 according to the invention.

In Fig. 6 only a section of the training device 4 is shown. However, each of the rows of shaped bodies 23 running along a longitudinal direction 29 of the training device 4 preferably has at least ten, for example twelve or fourteen, shaped bodies 23 . The extension 10 in the area of the end 8 of the connecting element 2 protruding away from the enlargement element 22 is inserted through the passage opening 26 of the training device 4 arranged closest to the device 3 and is releasably fixed in it.

In the illustrated embodiment of the training set 28 , in the device 3 for enlarging the training device 4 , the enlarging element 22 and the connecting element 2 are separate components which are detachably connected to one another. Since the enlarging element 22 is in the form of a training device 4 and the connecting element 2 is the connector 1 according to the invention, the training assembly 28 basically consists of two training devices 4 of different lengths connected via the connector 1 .

Reference character list :

Interconnects

connection element

Furnishings

training device

Longitudinal connector

Base member first end Base member second end Base member first extension second extension

Molded distal end extension

fastener

form bar

Bearing surface base element

Comb form bar

Flank Form bar

molded rib distal end fitting

Comb form rib

Flank molded rib

magnifying element

molding

Longitudinal facility/ enlargement element

connection section

Through hole spherical area

workout compilation

Longitudinal training device

base level

Claims

Claims : Connector (1) for connecting at least two training devices (4) for stimulating the back muscles associated with a person's spine, the training devices (4) having two rows of shaped bodies (23) running next to one another in their longitudinal direction (29), in particular not offset from one another, which are connected to one another via connecting sections (25) and project away from a base plane (30) running through the connecting sections (25), and with each training device (4) between at least two adjacent shaped bodies (23) in a row and the associated two A through-opening (26) is formed in adjacent shaped bodies (23) in the other row, characterized in that the connector (1) has a base element (6) which extends in its longitudinal direction (5) and has two ends (7, 8), in that at least two extensions (9, 10) project upwards essentially perpendicularly and in the vertical direction from the base element (6), which can each be inserted through a through-opening (26) in one of the training devices (4), that one of the extensions (9, 10 ) is arranged in the region of each of the ends (7, 8) of the base element (6), and that an elongate shaped piece (11) is arranged between the extensions (9, 10) or, if applicable, two of the extensions (9, 10), which protrudes substantially perpendicularly and in the vertical direction upwards from the base element (6). Connector according to Claim 1, characterized in that between the extensions (9, 10) arranged in the areas of the ends (7, 8) of the base element (6) there is a further extension (9, 10) or at least two further extensions (9, 10 ) is/are arranged. Connector according to Claim 1 or 2, characterized in that the extensions (9, 10) in the region of their distal end (12) remote from the base element (6) each have a fastening element (13) for fixing the extensions (9, 10) in the respective Have through opening (26), in particular that the fastening element (13) widens the extension (9, 10) at its distal end (12). Connector according to one of Claims 1 to 3, characterized in that the extensions (9, 10) have an essentially round, in particular circular, cross section or in that the extensions have an essentially polygonal, in particular rectangular or diamond-shaped, cross section, preferably with rounded corners and/or concavely or convexly curved sides. Connector according to one of Claims 1 to 4, characterized in that the shaped piece (11) has a substantially polygonal, in particular rectangular or diamond-shaped, cross section, preferably with concavely curved sides, and/or that the shaped piece (11) extends to a distal , from the base element (6) spaced end (19) widens.

Connector according to one of Claims 1 to 5, characterized in that the shaped piece (11) has at least one side, preferably both sides, projecting in the longitudinal direction (5) of the connector (1) from the shaped piece (11) to the opposite extension (9, 10). and has a shaped rib (18) running from the base element (6) in the direction of a distal end (19) of the shaped piece (11) and/or that the shaped piece (11) has at least one side, preferably both sides, a right angle to the longitudinal direction (5) of the Connector (1) from the fitting (11) projecting away and from the base member (6) towards a has a shaped rib (18) running at the distal end (19) of the shaped piece (11). Connector according to Claim 6, characterized in that the shaped rib (18) or possibly a plurality of shaped ribs (18), preferably all of the shaped ribs (18), has/have a shape tapering away from the shaped piece (11), in particular in that flanks ( 21) of the shaped rib (18) or possibly the shaped ribs (18) have a concave curve. Connector according to one of claims 1 to 7, characterized in that the base element (6) between the shaped piece (11) and the adjacent extensions (9, 10) or, if necessary, between adjacent extensions (9, 10) in each case a linear in the longitudinal direction (5) of the connector (1) running formed web (14). Connector according to one of Claims 1 to 8, characterized in that the base element (6) in the region of at least one of the extensions (9, 10), preferably all extensions (9, 10), and/or the shaped piece (11) at least on one side , preferably on both sides, has a linear and perpendicular to the longitudinal direction (5) of the connector (1) and from the extension (9, 10) or shaped piece (11) protruding shaped web (14). Connector according to one of Claims 1 to 9, characterized in that the base element (6) in the region of at least one of the extensions (9, 10) arranged in the regions of the ends (7, 8) of the base element (6), preferably both extensions ( 9, 10), a linear in the longitudinal direction (5) of the connector (1) to the respective end (7, 8) of the base element (6) and at right angles to the extension (9, 10) projecting web away

(14). Connector according to one of Claims 8 to 10, characterized in that the shaped web (14) or, if necessary, several, preferably all, of the shaped webs (14) has/have an upwardly tapering shape, in particular in that flanks (17) of the Shaped web (14) or possibly the shaped webs (14) have a concave curve. Connector according to one of Claims 6 to 11, characterized in that the shaped rib(s) (18) and/or the shaped web(s) (14) and/or the shaped piece (11) at least in some areas have at least one between the shaped piece (11) and one of the adjacent extensions (9, 10) and the spherical area (27) running laterally on the base element (6). Connector according to one of claims 1 to 12, characterized in that a bearing surface (15) formed on a side of the base element (6) opposite to a side of the base element (6) from which the extensions (9, 10) away protrude, runs essentially flat or even. Connector according to one of Claims 1 to 13, characterized in that the extensions (9, 10), the base element (6) and the shaped piece (11) are made of a plastic, in particular an elastically deformable plastic, preferably a thermoplastic polymer such as polyurethane, for example. are made of silicone or rubber. Connector according to one of claims 1 to 14, characterized in that the extensions (9, 10), the The base element (6) and the shaped piece (11) are monolithically formed and foamed, injection molded or cast in one piece. Device (3) for enlarging a training device (4) for stimulating the back muscles associated with a person's spine, the training device (4) having two rows of shaped bodies (23) running next to one another in its longitudinal direction (29), in particular not offset from one another, which have connecting sections (25) are connected to one another and project away from a base plane (30) running through the connecting sections (25), and wherein in the training device (4) between at least two adjacent shaped bodies (23) in a row and the associated two adjacent shaped bodies ( 23) of the other row, a through-opening (26) is formed, characterized in that the device (3) has an enlargement element (22) which has two rows of at least one shaped body (23), which are connected to one another via one or more connecting sections (25), and a connecting element (2) arranged in the longitudinal direction (24) of the device (3) or transversely thereto on the enlargement element (22) which has a base element (6) extending in the longitudinal direction (24) of the device (1) or transversely thereto and protruding with one end (7) away from the enlargement element (22), that in the region of the enlargement element (22). protruding end (7) of the base element (6) there is an extension (9) which protrudes upwards essentially perpendicularly and in the vertical direction from the base element (6), and that the extension (9) passes through a through-opening (26) the Training facilities (4) can be plugged in and fixed in this. Device according to Claim 16, characterized in that the device (3) is of monolithic design. Device according to Claim 16, characterized in that the enlargement element (22) and the connecting element (2) are separate components which are connected to one another. Device according to Claim 18, characterized in that the connecting element (2) is a connector (1) according to one of Claims 1 to 15. Device according to Claim 19, characterized in that the enlargement element (22) has two or more than two shaped bodies (23) in each row, which are connected to one another via the connecting sections (25) and have a base plane ( 30), that a through-opening (26) is formed between at least two adjacent shaped bodies (23) in one row and the associated two adjacent shaped bodies (23) in the other row, that one end (7) of the connector (1) end (7) of the connecting element (2) protruding away from the enlargement element and the other end (8) is an end (8) of the connecting element (2) connected to the enlargement element (22), and that the extension (10) in the region of the other with the enlargement element (22) connected end (8) is inserted through the through-opening (26) of the enlargement element (22) and fixed in this. Device according to claim 20, characterized in that the connector (1) is a connector (1) according to claim 12, and that one or more of the shaped bodies (23) of the enlarging element (22) is/are arranged essentially with a precise fit in the spherical region or regions (27). Device according to Claim 19 to 21, characterized in that a distance between the shaped piece (11) and at least one of the extensions (9, 10) adjoining it is essentially the same as the width between the shaped piece (11) and the extension (9, 10) arranged connecting portion (25) of the enlargement element (22) corresponds. Training assembly (28) comprising a training device (4) for stimulating the back muscles associated with a person's spine, the training device (4) having two rows of shaped bodies (23) running next to one another in their longitudinal direction (29), in particular not offset from one another, which are connected via connecting sections ( 25) are connected to one another and project away from a base plane (30) running through the connecting sections (25), and wherein in the training device (4) between at least two adjacent shaped bodies (23) in a row and the associated two adjacent shaped bodies (23 ) the other row a through hole (26) is formed, characterized in that the training device (4) is connected to a device (3) for enlarging the training device (4) according to any one of claims 16 to 22. Training arrangement according to Claim 23, characterized in that the device (3) for enlarging the training device (4) is arranged in front of or behind the training device (4) as seen in the longitudinal direction (29) of the training device (4). Training arrangement according to Claim 23, characterized in that the device (3) for enlarging the training device (4) is arranged laterally and parallel to the training device (4) viewed in the longitudinal direction (29) of the training device (4).