Anti-rotation device for a coupling, in particular for a hose coupling, in particular for an axially closing hose coupling

Abstract

Anti-rotation device (1) for a coupling, in particular for a hose coupling, in particular for an axially closable hose coupling, wherein the anti-rotation device comprises a first and a second gripping element (2, 3) and a locking element (4), wherein the first and the second gripping element (2, 3) are pivotally connected to each other and / or arranged movably relative to each other by means of a hinge connection (5), and wherein the first and the second gripping element (2, 3) can be positioned and / or fixed in a specific position relative to each other by means of the locking element (4), in particular wherein, in the closed state of the locking element (4), the first and second gripping element (2, 3) can then be at least partially clamped and / or arranged on the circumference of a coupling to secure the closed coupling, characterized in that the first and second gripping element (2,3) is made of aluminium and / or an aluminium alloy and / or the material of the first and second gripping element (2, 3) consists of aluminium and / or an aluminium alloy.

Description

[0001] The invention relates to an anti-twist device for a coupling, in particular for a hose coupling, in particular for an axially closable hose coupling, wherein the anti-twist device has a first and a second gripping element and a closure element, wherein the first and the second gripping element are articulated to one another and / or are arranged to be movable relative to one another with the aid of an articulated connection, and wherein the first and the second gripping element can be positioned and / or fixed in a specific position relative to one another with the aid of the closure element, in particular wherein in the closed state of the closure element the first and the second gripping element can then be fastened and / or arranged at least partially in a clamping manner on the circumference of a coupling to secure the closed coupling.

[0002] A number of anti-twist devices for couplings are already known in the prior art. Such anti-twist devices are intended, in particular, to prevent the unintentional opening of a hose coupling as much as possible, and in particular, to secure a closed hose coupling in its closed state. This particularly applies to "hose couplings," especially the axially lockable "hose couplings" known in the prior art, which are also known under the name "Storz" couplings. In this regard, the following can be stated first:

[0003] Hoses, especially fire hoses, must be able to be combined or extended to form a very long hose, while at the same time, such hoses must also be able to be connected quickly and easily to faucets or water connections, for example. Manually operated hose couplings are particularly useful for this purpose. So-called "Storz" couplings are particularly used here. For example, a coupling part, particularly a "Storz" coupling part, is arranged at each hose end to connect two hose ends. The two hose ends can then be releasably connected to each other using the coupling parts.In this case, the coupling parts located at the hose ends are pressed together and twisted against each other, whereby the corresponding respective coupling parts and / or inclined surfaces then ensure that when the hose ends or coupling parts are twisted in the opposite direction to each other, the hose ends or coupling parts move axially relative to each other and the coupling, in particular the "Storz" coupling, is then closed. Sealing elements such as sealing rings can be provided as additional elements of the coupling (or the "Storz" coupling). An anti-twist device, which is present or can be additionally arranged, in particular on the outer circumference of the closed hose coupling, can then ensure that the coupling or the mutually closed coupling parts are also appropriately secured in their closed state.

[0004] If an anti-twist device is then arranged on the coupling, the coupling parts cannot then accidentally separate from one another due to a corresponding rotational movement of the coupling parts (reverse to the respective closing direction of rotation of the coupling parts), so that an unintentional opening of the coupling is prevented by means of the arranged anti-twist device.

[0005] For example, DE 20 2017 005 534 U1 discloses an anti-twist device for a coupling, in particular for a hose coupling, in particular for an axially closable "Storz" coupling. The anti-twist device comprises a semi-circular first and a semi-circular second gripping element, as well as a closure element. The first and second gripping elements are connected to one another in an articulated manner, so that the first gripping element is arranged so that it can move relative to the second gripping element.In particular, due to this design / arrangement of the gripping elements, it is possible to arrange the anti-twist device on the outer circumference of a coupling, in particular of a correspondingly closed hose coupling, wherein the first and second gripping elements can be positioned and / or fixed in a specific position relative to one another with the aid of the closure element, so that when the closure element is closed, the first and second gripping elements can then be clamped onto the circumference of a coupling, in particular onto the circumference of a “Storz” coupling, to implement the anti-twist device. In this case, securing elements are provided on the inner circumference of the first and second gripping elements, which, when the anti-twist device is seated on the outer circumference of the coupling, engage in recesses and / or locking cams of the respective coupling parts of the coupling.In particular, this prevents mutual twisting and unintentional loosening of the coupling parts of the coupling and provides security for the closed hose coupling.

[0006] However, the anti-twist device mentioned above, which is known in the state of the art, is not yet optimally designed. The gripping elements of the anti-twist device are made of cast stainless steel, which makes the production and material costs for such an anti-twist device very high.

[0007] The invention is therefore based on the object of designing and / or further developing the aforementioned anti-rotation device, from which the invention is based, in such a way that its production and material costs are reduced.

[0008] The problem outlined above is now initially solved by the features of claim 1 and claim 2.

[0009] In this case, the first and second gripping elements are made of aluminum and / or an aluminum alloy, and / or the material of the first and second gripping elements consists of aluminum and / or an aluminum alloy. By manufacturing and / or forming the first and / or second gripping elements from aluminum and / or an aluminum alloy, the production and material costs for an anti-twist device can initially be significantly reduced, thus avoiding the disadvantages previously known in the prior art.

[0010] Furthermore, as a further alternative, the first and second gripping elements can be made of a plastic, or the material of the first and second gripping elements can be made of a plastic. In particular, polyamide or polyamide materials, or polypropylene or polypropylene materials, are used as the plastics. This also avoids the disadvantages previously known in the prior art, and in particular, the production and material costs for an anti-twist device can be significantly reduced.

[0011] Preferably, the closure element is additionally made at least partially, in particular entirely, of stainless steel or a stainless steel alloy. Practice has shown that constructing the first and second gripping elements from aluminum or an aluminum alloy and constructing the closure element from stainless steel or a stainless steel alloy is sufficient to provide an anti-twist device for a coupling, in particular for a hose coupling, that meets the usual requirements, while reducing the corresponding production and material costs overall.

[0012] The first and / or second gripping element has at least one securing element, preferably a plurality of securing elements, on its respective inner circumference. The securing elements are designed and / or constructed to engage in recesses and / or locking cams of a coupling to be secured.

[0013] The closure element made of stainless steel and / or a stainless steel alloy has a locking lever, a screw adjustment and / or a connecting region. The locking lever is arranged and / or designed to be articulated on an end region of the first gripping element. A hook element is present on an end region of the second gripping element, or the end region of the second gripping element is hook-shaped. Ultimately, the connecting region of the closure element can then be detachably connected to the hook element and / or the hook-shaped end region. In particular, the connecting region is then designed such that the hook element engages in a recess in the connecting region and the articulated locking lever can then be folded over in order to close or open the first and second gripping elements.The anti-twist device for the coupling, especially for the hose coupling, can be activated or implemented accordingly when the coupling is in place. The screw adjustment can be adjusted, and in particular its length can be varied / changed, so that the effective closing force or clamping force of the anti-twist device on the coupling can be adjusted accordingly. Ultimately, the disadvantages mentioned above have been avoided and corresponding advantages achieved.

[0014] There are now a multitude of possibilities for advantageously designing and / or developing the anti-rotation device according to the invention. For this purpose, reference is first made to the claims subordinate to claim 1. A preferred embodiment of the anti-rotation device according to the invention is described in more detail below with reference to the following figures and in the following description. The drawing shows: Fig. 1 in a schematic, slightly perspective view of an anti-twist device according to the invention for a coupling, in particular for a hose coupling, and Fig. 2 shows a schematic representation of the anti-twist device Fig. 1 in an even wider open state from the side.

[0015] The Fig. 1 and Fig. 2 show a schematic representation of an anti-twist device 1 in Fig. 1 in slightly perspective view and in Fig. 2 essentially from the side. Here, the anti-twist device 1 is in Fig. 2 slightly wider than in Fig. 1, this should also be pointed out.

[0016] The Fig. 1 and Fig. The anti-twist device 1 shown in Figure 2 can be used or applied to a coupling not shown in detail here, in particular to a hose coupling. Fig. 1 and Fig. The anti-twist device 1 shown in Figure 2 can be “placed” and / or arranged in particular on the outer circumference of a closed hose coupling in order to then secure a closed hose coupling against unintentional opening.

[0017] As can be seen from the Fig. 1 and Fig. 2, the anti-twist device 1 initially has a first and a second gripping element 2 and 3 and a closure element 4.

[0018] The first and second gripping elements 2 and 3 are connected to one another in an articulated manner, in particular arranged to be movable relative to one another by means of an articulated connection 5.

[0019] With the aid of the closure element 4, the first and second gripping elements 2 and 3 can be positioned in a specific position and / or fixed to one another. In particular, when the closure element 4 is closed, the first and second gripping elements 2 and 3 can then be at least partially clamped and / or arranged accordingly on the circumference of a coupling to secure the coupling.

[0020] The disadvantages mentioned above are now initially avoided by the fact that the first and second gripping elements 2 and 3 are made of aluminum and / or an aluminum alloy and / or the material of the first and second gripping elements 2 and 3 consists of aluminum and / or an aluminum alloy. As already mentioned above, this significantly reduces production and material costs, which brings with it corresponding advantages and enables cost savings.

[0021] Furthermore, the disadvantages mentioned above can also be avoided alternatively by making the first and second gripping elements 2 and 3 from a plastic and / or by making the material of the first and second gripping elements 2 and 3 from a plastic. In particular, polyamide or polyamide materials or polypropylene or polypropylene materials come into consideration as plastics. This also represents a possibility for avoiding the disadvantages mentioned above and saving corresponding production and material costs.

[0022] In particular, the closure element 4 is at least partially, in particular completely, made of stainless steel and / or consists of a stainless steel alloy.

[0023] In particular, the combination of the first and second gripping elements 2 and 3 made of aluminum or plastic and the closure element 4 made of stainless steel realizes the required quality and security properties of the anti-twist device 1 to a certain extent, so that the anti-twist device 1 designed in this way prevents accidental opening of a hose coupling. Practice has shown that the "closing force" of the closed anti-twist device 1, namely when the closure element 4 effectively connects or closes the first and second gripping elements 2 and 3 to one another, is sufficient to releasably connect the gripping elements 2 and 3 made of aluminum and / or an aluminum alloy or the plastic to one another, but that the coupling, in particular the hose coupling, is secured against accidental opening.

[0024] As from the Fig. As can be seen in Figure 1, the first and second gripping elements 2 and 3 are each substantially semi-annular in shape and / or design. The term "substantially" refers in particular to an annular structure in an angular range between 120 and 240 degrees, as may be noted. The first and second gripping elements 2 and 3 have at least one securing element, preferably a plurality of securing elements 6, on their respective inner circumferences.

[0025] As can be seen from the Fig. 1 and Fig. 2, the securing elements 6 are formed on both edge sides of the first and second gripping elements 2 and 3. In the closed state of the anti-twist device 1, when the anti-twist device 1 is seated on the coupling, in particular on the closed hose coupling, these securing elements 6 engage in recesses and / or locking cams of a coupling to be secured or the coupling parts of the coupling to be secured.

[0026] As the Fig. 1 and Fig. 2, the closure element 4 has a locking lever 4a, a screw adjustment 4b, and a connecting area 4c. These aforementioned components, i.e., the locking lever 4a, the screw adjustment 4b, and the connecting area 4c, are made, in particular entirely, of stainless steel and / or a stainless steel alloy.

[0027] The locking lever 4a is arranged and / or designed to be articulated at an end region of the first gripping element 2.

[0028] As the Fig. 1 and Fig. 2, a hook element 7 is provided at an end region of the second gripping element 3 and / or the corresponding end region of the second gripping element 3 is hook-shaped, so that the connecting region 4c of the closure element 4 can be detachably connected to the hook element 7 or the hook-shaped end region. Expressed in another way: The connecting region 4c has a recess, so that the hook element 7 can engage in the recess when the locking lever 4a is in the corresponding position. After this, the locking lever 4a is folded over, in particular into the Fig. 1 and Fig. 2 is moved to the right in a clockwise direction, so that the first and second gripping elements 2 and 3 can then be clamped against one another or closed in such a way that, when placed on the coupling, in particular on the hose coupling, this coupling / hose coupling is then secured against unintentional opening. At the end of the locking lever 4a, a locking pin (not shown) and / or a bolt can then serve to secure the locking lever 4a in the closed position of the locking lever 4a. In particular, the closing force / clamping force of the closed anti-twist device 1 can be changed or adjusted accordingly - as desired - via the adjustable length of the screw adjustment 4b.

[0029] The Fig. 1 and Fig. 2 therefore show, in a schematic representation, on the one hand, a first alternative embodiment of an anti-twist device 1, wherein the two gripping elements 2 and 3 are made of aluminum or an aluminum alloy and then the closure element 4 is made in particular entirely of stainless steel or a stainless steel alloy.

[0030] Furthermore, the Fig. 1 and Fig. 2 but also on the other hand the other alternative, in particular also in schematic representation an anti-twist device 1, wherein then the first and second gripping elements 2 and 3 are made of a plastic or the material of the first and second gripping elements 2 and 3 consists of a plastic, but again here too the closure element 4 is in particular made entirely of stainless steel or consists of a stainless steel alloy. List of reference symbols: 1 anti-twist device 2 first gripping element 3 second gripping element 4 locking element 4a locking lever 4b Screw adjustment 4c Connection area 5 Articulated connection 6 securing elements 7 Hook element QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This 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

[0000] DE 20 2017 005 534 U1

[0005]

Claims

[1] Anti-twist device (1) for a coupling, in particular for a hose coupling, in particular for an axially closable hose coupling, wherein the anti-twist device comprises a first and a second gripping element (2, 3) and a closure element (4), wherein the first and the second gripping element (2, 3) are articulated to one another and / or are arranged to be movable relative to one another by means of an articulated connection (5), and wherein the first and the second gripping element (2, 3) can be positioned and / or fixed in a specific position relative to one another by means of the closure element (4), in particular wherein, in the closed state of the closure element (4), the first and the second gripping element (2, 3) can then be at least partially clamped and / or arranged on the circumference of a coupling to secure the closed coupling, characterized bythat the first and second gripping elements (2, 3) are made of aluminum and / or an aluminum alloy and / or the material of the first and second gripping elements (2, 3) consists of aluminum and / or an aluminum alloy. [2] Anti-twist device (1) for a coupling, in particular for a hose coupling, in particular for an axially closable hose coupling, wherein the anti-twist device comprises a first and a second gripping element (2, 3) and a closure element (4), wherein the first and the second gripping element (2, 3) are articulated to one another and / or are arranged to be movable relative to one another by means of an articulated connection (5), and wherein the first and the second gripping element (2, 3) can be positioned and / or fixed in a specific position relative to one another by means of the closure element (4), in particular wherein, in the closed state of the closure element (4), the first and the second gripping element (2, 3) can then be at least partially clamped and / or arranged on the circumference of a coupling to secure the closed coupling, characterized bythat the first and second gripping elements (2, 3) are made of a plastic and / or the material of the first and second gripping elements (2, 3) consists of plastic. [3] Anti-rotation device according to claim 1 or 2, characterized by that the closure element (4) is made at least partially, in particular completely, of stainless steel and / or of a stainless steel alloy. [4] Anti-rotation device according to one of claims 1 to 3, characterized by that the first and / or the second gripping element (2, 3) is each designed and / or constructed substantially semi-annularly. [5] Anti-rotation device according to one of the preceding claims, characterized by that the first and / or second gripping element (2, 3) has at least one securing element (6), in particular a plurality of securing elements (6), on its respective inner circumference. [6] Anti-rotation device according to claim 5, characterized bythat the securing elements (6) are designed and / or constructed to engage in recesses and / or in locking cams of a coupling to be secured. [7] Anti-rotation device according to one of the preceding claims, characterized by that the closure element (4) has a locking lever (4a), a screw adjustment (4b) and / or a connecting area (4c). [8] Anti-rotation device according to claim 7, characterized by that the locking lever (4a) is arranged and / or designed to be articulated at an end region of the first gripping element (2). [9] Anti-rotation device according to one of the preceding claims, characterized bythat a hook element (7) is present at an end region of the second gripping element (3) and / or an end region of the second gripping element (3) is hook-shaped, so that the connecting region (4c) of the closure element (4) can be effectively connected to the hook element (7) or to the hook-shaped detachable end region. [10] Anti-rotation device according to one of the preceding claims 2 to 9, characterized by that the first and second gripping elements (2, 3) are made of and / or consist of polyamide or a polyamide material or of polypropylene or a polypropylene material.

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