DE202015102576U1 - expander - Google Patents

Abstract

Expander with at least one elastic band (1) and two tension elements (2, 3) with an upper side and an underside connected to the upper side via at least one wall, wherein the tension elements (2, 3) with at least one engagement opening (4) for respective insertion at least one body part are provided and the elastic band (1) are connected with each of its ends respectively to the wall of one of the two tension elements (2, 3), characterized in that the first tension element (2) and / or the second tension element (3 ) Have fastening means for the releasable attachment of at least one further tension element (3).

Description

The invention relates to an expander having at least one elastic band and two tension elements with an upper side and an underside connected to the upper side via at least one wall, wherein the tension elements are provided with at least one engagement opening for respectively inserting at least one body part and the elastic band with each of its Ends are each connected to the wall of one of the two tension elements.

Expanders of this type are from the SU 1475692 A1 known. This consists of two lateral tension elements, which are connected to each other via an elastic band, so that for training then the two tension members are pulled apart under stretching of the elastic band.

This expander has the disadvantage that it is relatively bulky, which is not a problem in training environments, but prevents it during daily trips in the pocket or purse can be taken without the user has to carry a sports bag.

Furthermore, an expander for finger training from the RU 251 53 65 C2 known. This has a cross-shaped, elastic base body, each with a, arranged at the respective ends of the protruding arms of the cross free opening through which the user can insert a finger of a hand through each, so that he then spread the fingers and thus train their muscles can.

Although with this known expander the muscles of two fingers of one hand or one finger of both hands can be trained, he has the disadvantage that it can only be used to train the finger muscles, so the actual expander function is therefore not available.

The object of the invention is therefore to provide an inexpensive to produce and compact expander that is as flexible as possible.

This object is achieved according to the invention in that the first tension element or the second tension element or both tension elements have fastening means for the releasable attachment of at least one further tension element.

According to the invention, the tension elements are now designed so that they can be connected to one another. Particularly preferably, the tension elements are identical, that is, they have an identical shape.

In any case, it is possible to connect either the tension elements of an expander or two expanders. In the former case, the two tension elements can be superimposed and coupled to each other, for example via a releasable latching connection, so that for storage purposes, the two tension elements can be coupled. In this case, then results in a loop which is held by the coupled tension elements.

In the second case, it is particularly practical to sandwich several expanders. In this way, the spring constant of the elastic band can then be varied, wherein the individual expander can either have an equal elastic band or different strengths.

Particularly preferably, the fastening means are designed so that both the above-mentioned first alternative and also the second alternative can be implemented. This is easy to implement, since the two traction elements of an expander can be fastened to one another so that a second expander rotated by 180 ° can also be fastened to the traction elements of the first expander.

The fastening means may be formed by latching hooks and latching recesses, wherein, alternatively, a fixed hook may be provided on one tensioning element and a recess receiving this hook may be provided on the other tensioning element which is smaller than the upper part of the hook. Here then a Einfädelfenster is next to the recess provided that merges into the recess and is so large that the hook can be inserted into the hollow interior of the tension element. After a small rotation of the hook then gets, preferably latching against a retaining force in the recess, so that the set in the tension element vertical direction. But there are also all other types of fasteners possible, as long as they connect the two tension elements together.

The width and length of the tension elements is preferably not greater than 100mm. The wall in turn is preferably not higher than 20mm. A particularly preferred embodiment of the invention uses tension members whose wall is 10mm high and whose top and bottom have the same shapes with a maximum diameter of 100, in particular of 60mm. The tension elements have, for example, a round or elliptical passage opening with a maximum diameter of 40 mm, preferably 30 mm.

The elastic band is connected to its two end regions with the first tension element and the second tension element, the first tension element and the second tension element, as in classical expanders, forming the force introduction regions to be gripped by the user and in each case having at least one engagement opening. However, this is now, since the tension elements are preferably smaller, also kept smaller, so that the user can no longer engage with the whole hand, but only with one or two finders in the engagement opening. But this is enough for the usual training.

Thus, the expander can be operated without overuse of the finger muscles, the spring force of the elastic band is lower than in the known expanders, for example, it is between 20 and 100N.

The inventive design of the expander now two fingers each one hand can be easily and easily inserted into the engagement opening and the tape over the head, behind the back or in front of the body are pulled apart. Due to the preferably smaller tension elements compared to a conventional expander of the expander itself is small and can be easily stowed.

As an alternative to a round, triangular or quadrangular shape, the tension elements can also be formed by hooks or balls. However, the variant which is similar to a small expander is preferred. Of course, alternatively, instead of a single engagement opening, a plurality of engagement openings may also be provided on one or both tension elements. Furthermore, the tension elements can be connected to one another via a single elastic band or via a plurality of elastic bands.

Another possible embodiment of the invention uses tension members and elastic bands in which the elastic band is releasably secured to the tension member. In this embodiment, the user can be provided with a plurality of elastic bands with different spring constants, so that the user can exchange the elastic bands depending on the desired counterforce. Furthermore, the elastic bands can also be connected in series one behind the other, in particular when the expander is operated with both hands.

Further features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings.

In the drawings shows:

1 an embodiment of the invention with illustration of a possible use,

2 in the 1 illustrated embodiment of the invention in a side view,

3 in the 1 and 2 illustrated embodiment in a three-dimensional view,

4 in the 1 to 3 illustrated embodiment in a plan view and

5 a tension element in an enlarged view.

In 1 the application of an expander is shown. The expander is in the 2 - 4 in each case different views again shown in detail.

The expander consists in the illustrated embodiment of two tension elements 2 . 3 that have an elastic band 1 connected to each other. As in 1 For example, the user can with his two thumbs through engaging holes 4 in each of the two tension elements 2 . 3 are provided, the individual tension elements 2 . 3 grab and pull apart for training. In the application shown, as in conventional expanders in posture before the body, the arm and chest muscles, and trained, for example, when posture behind the body, the back muscles. Other postures can be used to train other muscle areas.

Like from the 2 and also out 3 it can be seen, consist of the tension elements 2 . 3 in the illustrated embodiment of flat bodies, which have a substantially triangular basic shape with rounded corners. Into the body is the intervention opening 4 introduced, the bodies of the tension elements 2 . 3 can be superimposed and locked together so that the two engaging holes 4 namely the engagement opening 4 of the first tension element 2 and the engagement opening 4 of the second tension element 3 , are congruent to each other. Thus, the user can also through both superimposed engaging holes 4 put a finger through for training purposes. This is especially designed to allow the user to switch several expanders in parallel by holding the tension members 2 . 3 locked at least two expander with each other. Through the congruent passage openings, he can then reach with one finger or fingers and start training. So that the user's finger can protrude through at least two tension elements, the wall is preferably kept narrow.

In addition, in a possible development of the invention, the elastic band 1 detachable to the tension elements in 2 . 3 be attached. Finally, it can also be shortened, for example, in that a loop is formed, which can be clamped, for which purpose a corresponding clamping means on the elastic band 1 can be provided.

5 shows the tension element of the preceding figures in an enlarged view. It can be seen here that each tension element has a latching hook 5 and a recess on the same side opposite 6 having. The recess 6 is smaller than the upper part of the latching hook 5 and goes above in a Einfädelfenster through which the latch hook 5 can be inserted into the hollow interior of the tension element. By slightly turning the tension elements to each other then the latch hook 5 in the region of the recess 6 be displaced, wherein he in this position with its upper hook portion an edge region of the recess 6 engages from below.

In the figures, the locking of the two tension elements 2 . 3 shown an expander. This is rather the storage position, in the application case during training, the rest option is preferably used for parallel connection of two or even more expanders.

LIST OF REFERENCE NUMBERS

1

 tieback

2

 First tension element

3

 Second tension element

4

 engagement opening

5

 latch hook

6

 recess

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• SU 1475692 A1 [0002]
• RU 2515365 C2 [0004]

Claims (16)

Expander with at least one elastic band ( 1 ) and two tension elements ( 2 . 3 ) with an upper side and a lower side connected to the upper side via at least one wall, wherein the tension elements ( 2 . 3 ) with at least one engagement opening ( 4 ) are provided for respective insertion of at least one body part and the elastic band ( 1 ) with each of its ends in each case with the wall of one of the two tension elements ( 2 . 3 ), characterized in that the first tension member ( 2 ) and / or the second tension element ( 3 ) Fastening means for the releasable attachment of at least one further tension element ( 3 ) exhibit. Expander according to claim 1, characterized in that, via which the first tension element ( 2 ) and the second tension element ( 3 ) are identical with identical shape. Expander according to claim 1 or 2, characterized in that the fastening means are latching and releasably fastened together. Expander according to claim 3, characterized in that the fastening means of a latching hook ( 5 ) at the top or the bottom of the first tension element ( 2 ) and a corresponding recess ( 6 ) in the top or the bottom of the second tension element ( 3 ) are formed. Expander according to claim 4, characterized in that the fastening means additionally a latching recess ( 6 ) in the top or the bottom of the first tension element ( 2 ) and a corresponding catch hook ( 5 ) at the top or the bottom of the second tension element ( 3 ). Expander according to claim 5, characterized in that the first tension element ( 2 ) and the second tension element ( 3 ) on the top a latch hook ( 5 ) and a recess ( 6 ) exhibit. Expander according to claim 5 or 6, characterized in that the first tension element ( 2 ) and the second tension element ( 3 ) on the underside a latching hook ( 5 ) and a recess ( 6 ) exhibit. Expander according to one of the preceding claims, characterized in that the largest diameter of the top and the bottom of the first tension element ( 2 ) and the second tension element ( 3 ) is not larger than 100 mm, preferably not larger than 70 mm, and more preferably 60 mm. Expander according to one of the preceding claims, characterized in that the height of the wall is not greater than 20mm and is preferably 10 mm. Expander according to one of the preceding claims, characterized in that the engagement opening ( 4 ) is formed by a round or elliptical passage opening with a maximum diameter of less than 50 mm, preferably less than 40 mm. Expander according to one of the preceding claims, characterized in that the first tension element ( 2 ) and the second tension element ( 3 ) has a flat upper side and a flat underside connected to the upper side via the wall, wherein the first traction element ( 2 ) and the second tension element ( 3 ) have a round, rectangular or triangular cross-sectional area. Expander according to one of the preceding claims, characterized in that the elastic band ( 1 ) in the unloaded state has a length of less than 500 mm, preferably between 300 mm and 400 mm. Expander according to one of the preceding claims, characterized in that between the first tension element ( 2 ) and the second tension element ( 3 ) two or more elastic bands ( 1 ) are arranged. Expander according to one of the preceding claims, characterized in that the elastic band ( 1 ) detachable with the first tension element ( 2 ) and / or the second tension element ( 3 ) connected is. Expander according to the preceding claim, characterized in that the first tension element ( 2 ) and the second tension element ( 3 ) are formed by at least two sandwiched, plate-like individual elements with identical cross-section, wherein at least two opposing individual elements in each case via an elastic band ( 1 ) and the individual elements of a tension element ( 2 . 3 ) are releasably connected together. Expander according to one of the two preceding claims, characterized in that at least two of the elastic bands ( 1 ) have a different spring constant.

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