ANTI-LOOPING FIXING

Abstract

The invention relates to a fastening assembly. The fastening assembly has at least one nearly cylindrical element and a corresponding element. Fig. 1

Description

Title of the invention: ANTI-WITHOUT FIXING

[0001] The present invention relates to an anti-retraction fastener.

[0002] Fastening elements are used for the protection of machine parts. Fastening elements are small, often barely discernible machine components used in virtually all machine structures. Structural parts with complementary shapes protect other machine parts against axial play or limit it as guiding elements. Fastening elements are available in numerous embodiments and are therefore suitable for various applications. Examples of fasteners known from the prior art include retaining rings, spring connectors, and Fokker pins (also known as safety clips).

[0003] A common feature of the prior art is that corresponding fixing measures generally provide for or require an additional element.

[0004] There is a need to provide an improved fastening assembly. In particular, there is a need to provide a fastening assembly that operates with as few additional elements as possible, ideally no additional elements, and / or is of as simple a design as possible.

[0005] A first aspect concerns a fastening assembly. The fastening assembly has at least one nearly cylindrical element. The nearly cylindrical element has a winding wound in a winding direction around a longitudinal axis of the nearly cylindrical element. The winding has a winding pitch. The fastening assembly has a corresponding element. The corresponding element has a nearly cylindrical portion. The corresponding element has a threaded portion located at the nearly cylindrical portion. The threaded portion has a thread direction and a thread pitch. The thread direction and thread pitch of the threaded portion are adapted to the winding direction and the winding pitch of the nearly cylindrical element.The thread direction and pitch of the threaded portion are adapted to the winding direction and pitch of the nearly cylindrical element such that an application, in particular screwing, rotating, or inserting, of the nearly cylindrical element onto the corresponding element in a given direction of rotation is possible. Alternatively, or in addition, the thread direction and pitch of the threaded portion are adapted to the winding direction and pitch of the nearly cylindrical element such that an application, in particular screwing, rotating, or inserting, of the corresponding element onto the nearly cylindrical element in a given direction of rotation is possible. In a connected state. By applying, in particular screwing, rotation, or insertion, the at least nearly cylindrical element and the conjugate element, the at least nearly cylindrical element cooperates with the conjugate element. In a state connected by the application, in particular screwing, rotation, or insertion, of the at least nearly cylindrical element and the conjugate element, the at least nearly cylindrical element cooperates with the conjugate element in such a way that, upon rotation of the at least nearly cylindrical element and / or the conjugate element in the opposite direction to the direction of rotation, a frictional force is produced between the at least nearly cylindrical element and the conjugate element such that the frictional force prevents the at least nearly cylindrical element and the conjugate element from separating from each other.

[0006] In other words, in the connected state of the at least nearly cylindrical element and the conjugate element, the at least nearly cylindrical element cooperates with the conjugate element. This cooperation leads to a situation where, during a rotation of the at least nearly cylindrical element and / or the conjugate element in the opposite direction to the direction of rotation, a frictional force is produced between the at least nearly cylindrical element and the conjugate element. The frictional force produced prevents the at least nearly cylindrical element and the conjugate element from separating from each other.

[0007] The fastening assembly does not require, apart from the at least almost cylindrical element and the conjugate element, any additional separate element.

[0008] In conventional rotary joints between two elements formed by rotation in one direction, the joints can break when at least one of the elements is rotated sufficiently firmly in the corresponding opposite direction of rotation to overcome a certain frictional force. In contrast, the rotary joint between the nearly cylindrical element and the conjugate element cannot break when a relatively large torque is applied in the opposite direction of rotation or when using typical torques in the opposite direction. The nearly cylindrical element and the conjugate element remain connected, thus creating a fastening mechanism.

[0009] Here, an application can generally involve screwing, rotation, or insertion. For example, insertion can involve pressure-based insertion.

[0010] Therefore, an application of the at least nearly cylindrical element to the conjugate element in a direction of rotation may include, in particular, screwing or rotating the at least nearly cylindrical element onto the conjugate element in a direction of rotation. Alternatively or in addition, an application of the conjugate element to the at least nearly cylindrical element in a direction of rotation may include screwing or rotating the conjugate element onto the at least nearly cylindrical element in a direction of rotation.

[0011] Furthermore, applying the at least nearly cylindrical element to the conjugate element in a direction of rotation may include a push-fit, in particular a push-fit with pressure such that movement is obtained, which is also obtained when screwing or rotating the at least nearly cylindrical element onto the conjugate element in a direction of rotation. Alternatively or in addition, applying the conjugate element to the at least nearly cylindrical element in a direction of rotation may include a push-fit, in particular a push-fit with pressure such that movement is obtained, which is also obtained when screwing or rotating the conjugate element onto the at least nearly cylindrical element in a direction of rotation.

[0012] The nearly cylindrical element may have a spring-like element or be made in the form of a spring-like element. For example, the nearly cylindrical element may have a spring-like element or be made in the form of a spring-like element. The nearly cylindrical element may have a nut-like element with an internal thread or be made in the form of a nut-like element. In particular, the nearly cylindrical element may have, at least in some parts, a certain degree of flexibility or be made in a non-completely rigid manner, at least in some parts.

[0013] The at least nearly cylindrical element may have a flat surface at at least one end region. The flat surface may be ground. Therefore, the flat surface may be a ground flat surface or be produced in the form of a ground flat surface. The conjugate element may have a conjugate flat surface. The conjugate flat surface may be ground. Therefore, the conjugate flat surface may be a ground conjugate flat surface or be produced in the form of a ground conjugate flat surface. For example, the flat surface may be located at least on one front side of the at least nearly cylindrical element. The flat surface may extend at least nearly perpendicularly to the longitudinal direction of the at least nearly cylindrical element.The conjugate plane surface can extend at least almost perpendicularly to the longitudinal direction of the at least almost cylindrical element and / or the conjugate element.

[0014] The flat surface and the conjugate flat surface can, in the state connected by the application, in particular screwing, rotation, or insertion, of the at least nearly cylindrical element and the conjugate element, cooperate in such a way that at least a part of the friction force is produced. In other words, the flat surface and the conjugate flat surface can cooperate, in the state connected by the application, in particular screwing, rotation, or insertion, of the at least nearly cylindrical element and the conjugate element. Through this cooperation, at least a part of Frictional force can be generated. For example, the flat surface and its conjugate flat surface, when connected by the application—in particular screwing, rotation, or insertion—of the at least nearly cylindrical element and the conjugate element, can come into contact with each other at least in some parts or bear against each other at least in some parts. Thus, at least part of the frictional force can be generated during rotation in the opposite direction to the direction of rotation.

[0015] In the state, connected by the application, in particular screwing or rotation or plugging, of the at least almost cylindrical element and the conjugate element, the at least almost cylindrical element can cooperate with the conjugate element in such a way that, during rotation in the opposite direction to the direction of rotation, a first twist of the at least almost cylindrical element causes a narrowing of the cross-section of the at least almost cylindrical element in a region of the at least almost cylindrical part such that the narrowing of the cross-section causes a clamping, producing at least part of the friction force, between the at least almost cylindrical element and the at least almost cylindrical part.In other words, in the state where the at least nearly cylindrical element and the conjugate element are connected by the application, particularly screwing, rotation, or insertion, the at least nearly cylindrical element can cooperate with the conjugate element. Through this cooperation, upon rotation in the opposite direction to the direction of rotation, an initial twisting of the at least nearly cylindrical element can cause a narrowing of its cross-section in a region of the at least nearly cylindrical part. This narrowing of the cross-section can cause clamping, producing at least part of the frictional force, between the at least nearly cylindrical element and the at least nearly cylindrical part.

[0016] The at least nearly cylindrical portion may have a section without threads. The section without threads may be connected to the threaded portion. In particular, the section without threads may be connected directly to the threaded portion. The resulting flat surface may extend from the section without threads, for example, at least nearly perpendicularly to the section without threads.

[0017] In a state connected by the application, in particular screwing, rotation, or insertion, of the at least nearly cylindrical element and the conjugate element, the at least nearly cylindrical element can cooperate with the conjugate element in such a way that, during a rotation in the direction of rotation and a pulling movement along the longitudinal axis of the at least nearly cylindrical element and / or the conjugate element, a second twisting of the at least nearly cylindrical element causes an enlargement of the cross-section, making possible a detachment, of the at least nearly cylindrical element in a region of the at least part almost cylindrical. In other words, in a state connected by the application, in particular screwing, rotation, or insertion, of the almost cylindrical element and its conjugate element, the almost cylindrical element can cooperate with the conjugate element. Through this cooperation, during rotation in the direction of rotation and a pulling motion along the longitudinal axis of the almost cylindrical element and / or the conjugate element, a second twisting of the almost cylindrical element can cause an increase in the cross-section of the almost cylindrical element in a region of the almost cylindrical portion. This increase in cross-section can enable or cause the almost cylindrical element to separate from the conjugate element. For example, thanks to the increase in cross-section, some of the frictional force that would otherwise act can be eliminated or reduced.

[0018] In conventional rotary joints between two elements formed by rotation in one direction, the joints can be separated when at least one of the elements is rotated sufficiently firmly and / or solidly in the corresponding opposite direction of rotation to overcome a certain frictional force. Conversely, the rotary joint between the nearly cylindrical element and the conjugate element cannot be separated by rotation in the opposite direction, but only by rotation in the same direction combined with a pulling motion. Thus, separation of the joint is possible. However, the pulling and rotating motion required for this is unusual and results in the joint not being separated inadvertently, but only when intentionally detached. This increases the safety and reliability of the fastening assembly.

[0019] An inner diameter of the almost cylindrical element can be adapted to an outer diameter of the almost cylindrical part, or vice versa. The inner diameter of the almost cylindrical element can correspond, in particular, almost exactly to the outer diameter of the almost cylindrical part. In this way, the almost cylindrical element can be applied, in particular screwed, turned, or inserted, onto the corresponding element without the presence of other elements, or vice versa.

[0020] The conjugate element may have an overlap. The overlap may, in a state connected by the application, in particular screwing or rotation or insertion, of the at least almost cylindrical element and the conjugate element, surround at least a region of the at least almost cylindrical element.

[0021] A second aspect relates to a fastening method. The fastening method is implemented using a fastening assembly according to the first aspect. The fastening method comprises an application, in particular a screwing or a rotation or a The fastening method involves inserting the at least nearly cylindrical element onto the conjugate element in a direction of rotation. Alternatively, or in addition, the fastening method includes applying, in particular screwing, rotating, or inserting, the conjugate element onto the at least nearly cylindrical element in a direction of rotation. In a state connected by the application, in particular screwing, rotating, or inserting, of the at least nearly cylindrical element and the conjugate element, the at least nearly cylindrical element cooperates with the conjugate element. The fastening method includes rotating the at least nearly cylindrical element and / or the conjugate element in the opposite direction to the direction of rotation. Through this rotation in the opposite direction, a frictional force is generated between the at least nearly cylindrical element and the conjugate element.The force of friction prevents the separation of the at least nearly cylindrical element and its conjugate component from each other.

[0022] Although some of the aspects described above have been described by reference to the fixation assembly according to the first aspect, these aspects can thus also be realized or become realized in a corresponding manner in the fixation process according to the second aspect.

[0023] This disclosure should be explained in more detail with the aid of figures. These figures schematically illustrate:

[0024] [Fig. la] a perspective view of a fastening assembly according to an example embodiment in an unconnected state;

[0025] [Fig. 1b] another perspective view of the fastening assembly according to the embodiment example in an unconnected state;

[0026] [Fig.2a] a perspective view of the fastening assembly according to the embodiment example in a connected state;

[0027] [Fig.2b] a side view of the fastening assembly according to the embodiment example in a connected state;

[0028] In what follows, specific details are stated to provide a complete understanding of this disclosure, but not to be limited to it. However, it is clear to a person skilled in the art that this disclosure can be used in other embodiments that may differ from the details stated below. For example, specific configurations and embodiments of a fastening assembly are described below, which should not be considered limiting. Furthermore, the application of a spring element to a conjugate element / the application of the conjugate element to the spring element are systematically described as examples such as screwing or rotating, but other embodiments such as plugging, for example, push-fitting, are nevertheless possible.

[0029] Figure 1a schematically illustrates a fastening assembly 100. The fastening assembly 100 has at least one nearly cylindrical element 1. The nearly cylindrical element 1 is implemented purely by way of example as a spring-type element or spring element 1 in the embodiment illustrated in Figures 1a to 2b and may therefore be referred to hereafter also as spring element 1 or simply as spring 1. The spring element 1 has a winding wound in a winding direction around a longitudinal axis L of the spring element 1. The winding has a winding pitch. The longitudinal axis L also designates a longitudinal axis of the fastening assembly 100. The longitudinal axis L is an axis extending in the longitudinal direction of the spring element 1 or as an axis of a larger extent of the spring element and / or the fastening assembly.

[0030] The fastening assembly 100 has a connecting element 10. In the embodiment illustrated in Figures 1a to 2b, the connecting element 10 is, for example, a plug-in part to which several lines are drawn and can therefore also be referred to as the plug-in part 10 or the basic plug-in part 10. The longitudinal axis L of the spring element 1 corresponds, in the illustrated embodiment, to the longitudinal axis of the connecting element 10. The connecting element 10 has at least one nearly cylindrical portion. The nearly cylindrical portion has a threaded portion 12. The threaded portion 12 has a thread direction and a thread pitch. The thread direction and thread pitch of the threaded part 12 are adapted to the winding direction and winding pitch of the spring element 1. Thus, screwing the spring element 1 onto the conjugate element 10 in a direction of rotation is made possible.Alternatively, the conjugate element 10 can be screwed onto the spring element in a direction of rotation. Furthermore, a combined screwing of the spring element 1 and the conjugate element 10 relative to each other is possible. In the embodiment illustrated in Figures 1a to 2d, a right-hand thread is shown as an example, which allows the spring element 1 to be screwed onto the conjugate element by a right-hand rotation, i.e., a clockwise rotation.

[0031] An inner diameter of the spring element 1 is matched to an outer diameter of the at least nearly cylindrical portion of the conjugate element 10. More precisely, the inner diameter of the spring element 1 corresponds at least nearly to the outer diameter of the at least nearly cylindrical portion of the conjugate element 10. Thus, on the one hand, screwing the spring element 1 onto the conjugate element 10 is made possible. On the other hand, the spring element 1 fits exactly onto the conjugate element 10 after screwing, and a complementary engagement between the spring element 1 and the conjugate element 10 in the radial direction (of the spring element 1) is obtained. The conjugate element 10 also possibly has A cover 16. It is also possible to do without the cover. The cover 16 has a larger diameter than the at least nearly cylindrical part.

[0032] In another embodiment, the spring element can also be composed of several spring elements (not illustrated), another conjugate element can furthermore, as another embodiment, be arranged as a fixed part (not illustrated) between the several spring elements, which may not be elastic, for example be made of a metal or a synthetic material.

[0033] The spring element 1 has, at one end region, a flat surface 2, for example ground, as can be seen in Figures 1a, 2a and 2b. More precisely, the spring element 1 has the flat surface 2 at one end face. The spring element 1 has, at another end region, a flat surface 3, for example ground, as can be seen in Figure 1b. More precisely, the spring element 1 has the flat surface 3 at a second end face. The spring element 1 (the spring) thus has, for example, a ground flat surface 2, 3 at both ends. The conjugate element 10 has a conjugate flat surface 13, as can be seen in [Fig. 1a]. The conjugate plane surface 13 is set back from the cover 16. In this way, the conjugate plane surface 13 is surrounded by the cover 16.

[0034] The spring element can be screwed onto the threaded part 12 (i.e. the part of the at least almost cylindrical part which has a thread) of the conjugate element 10. In the screwed state, the spring element 1 terminates at the level of / on the conjugate flat surface 13 of the conjugate element 10, more precisely the flat surface 3 of the spring element 1 terminates at the level of the conjugate flat surface 13.

[0035] The at least nearly cylindrical portion of the conjugate element 10 has a threadless section 14. The threadless section 14 connects, for example, directly to the threaded section 12 in the illustrated embodiment. The conjugate flat surface 13 extends from the threadless section 14 perpendicularly to the threaded section 12 and to the longitudinal axis L. In the illustrated embodiment, the conjugate flat surface 13 connects directly to one end of the threadless section 14 that is opposite the threaded section 12.

[0036] A state, connected by screwing, of the spring element 1 and the conjugate element 10 is illustrated by way of example in figures 2a and 2b. This state can also be referred to briefly simply as the connected state.

[0037] In the connected state, the spring element 1 cooperates with the conjugate element 10. The cover 16 surrounds, in the connected state, at least one region of the spring element 1.

[0038] In the connected state, the spring element 1 and the conjugate element 10 cannot be separated from each other in the usual way by rotation in the opposite direction to the direction of rotation, that is to say, in the illustrated example, by rotating the spring element 1 in the direction counterclockwise. When the spring element 1 and / or the connecting element 10 rotates in the opposite direction to the direction of rotation, a frictional force is generated between the spring element 1 and the connecting element 10. This frictional force prevents the spring element 1 and the connecting element 10 from separating from each other. The frictional force is also referred to below as the total frictional force.

[0039] The flat surface 3 and the conjugate flat surface 13 cooperate in the connected state. More precisely, a frictional engagement occurs between the flat surface 3 and the conjugate flat surface 13, which acts in the opposite direction to the direction of rotation. Due to this frictional engagement, when the spring element 1 and / or the conjugate element 10 rotates in the opposite direction to the direction of rotation, a first frictional force is produced, which constitutes at least a part of the total frictional force.

[0040] Furthermore, frictional engagement occurs in one direction along the longitudinal axis L between the spring element 1 and the conjugate element 10. More precisely, the frictional engagement is produced by contact between regions of the spring element 1 and the cylindrical portion, which are in direct contact with each other. The frictional engagement acts in one direction along the longitudinal axis L during rotation in the opposite direction to the normal direction of rotation. Due to the frictional engagement, during rotation of the spring element 1 and / or the conjugate element 10 in the opposite direction to the normal direction of rotation, a second frictional force is produced, which constitutes at least a portion of the total frictional force.

[0041] Due to the threaded engagement between the spring element 1 and the conjugate element 10, more precisely between the spring element 1 and the threaded part 12, an engagement by complementary shapes also acts in a direction along the longitudinal axis L.

[0042] In the connected state, a first torsion of the spring element 1 occurs during rotation in the opposite direction to the direction of rotation. This first torsion causes a narrowing of the cross-section 18 of the spring element 1 in a region of the at least nearly cylindrical part of the conjugate element 10, as illustrated in [Fig. 2b]. The narrowing of the cross-section 18 causes a clamping between the spring element 1 and the at least nearly cylindrical part. The clamping produces, for example, a third frictional force, which forms at least part of the total frictional force. In particular, the total acting frictional force is increased by the clamping.

[0043] The conjugate element 10 has, as described, a threaded portion 12 starting at the end of the part, which threaded portion is adapted to the pitch of the spring element 1 and terminates in a threadless portion 14 (which can also be designated as the rod region) having the dimension of the inner diameter of the element Spring 1. The position of the threaded portion 12, as well as the number of thread turns, has no influence on the fastening function. Indeed, the fastening function is achieved by clamping the spring element 1 onto the flat surface 3 and the corresponding flat surface 13 onto the threaded portion 12. When an attempt is made to rotate the spring element 1, the rotation is prevented by a narrowing of the cross-section 18 of the spring element 1.

[0044] In summary, it can be said that the fastening assembly 100, for example a spring fastener, is produced, which reliably prevents a simple rotation of the spring element 1 relative to the conjugate element 10 (for example a plug-in part) or a simple rotation of the conjugate element 10 relative to the spring element 1 or a combined rotation of the spring element 1 and the conjugate element 10 relative to each other.

[0045] Detachment of the spring element 1 and the connecting element 10 is made possible by an unusual combination of movements. During a rotation in the direction of rotation (in this example, a clockwise rotation) and a tensile movement along the longitudinal axis L, a second torsion of the spring element 1 is produced. This second torsion causes an increase in the cross-sectional area of ​​the spring element 1 in a region of the at least nearly cylindrical portion of the connecting element 10. The increase in cross-sectional area makes it possible to detach the spring element 1 and the connecting element 10 from each other. In particular, an acting frictional force, specifically the aforementioned total frictional force, is reduced by the increase in cross-sectional area. The fastening can therefore be removed again by a tensile-torsional force, without requiring any additional fastening elements.

[0046] The exposed, threadless portion 14 (stem region) may also be provided with, or become provided with, the aforementioned (spring) cover 16. This, however, has no influence on the fastening function. After the spring element 1 (the spring) is tightened with a torque, for example, between 0.3 Nm and 0.4 Nm, it can no longer be detached simply by rotating it in the opposite direction (for example, clockwise). This is because initially the frictional forces of the flat surface 3 and the conjugate flat surface 13 of the conjugate element 10 and the spring element 1 hold the spring element 1 in position, and consequently, a narrowing of the cross-section 18 occurs in the region of the spring element 1, and the friction is increased.To detach the spring fastener, the spring element 1 is rotated in the direction of rotation (e.g., clockwise) and is subjected to tension. Consequently, due to the torsion, in the preceding region of the narrowing of cross-section 18, the . the diameter of the spring element 1 increases and it can thus slide on the threaded part 12 and the tensioned spring element 1 can detach.

[0047] In another embodiment, the spring-loaded fastening function can also be used for a left-hand thread. Here, the basic condition is to achieve a left-hand threaded spring winding. The same applies to the connecting element 10 (the basic plug-in part).

Claims

Demands

1. Fastening assembly (100) having: - an element at least almost cylindrical (1) having a winding wound in a winding direction around a longitudinal axis (L) of the element at least almost cylindrical (1) and having a winding pitch;- a conjugate element (10) comprising at least an almost cylindrical part and a threaded part (12) disposed at the level of the almost cylindrical part, which threaded part (12) has a thread direction and a thread pitch, the thread direction and the thread pitch of the threaded part being adapted to the winding direction and the winding pitch of the almost cylindrical element (1) such that an application, in particular a screwing or a rotation or a plugging, of the almost cylindrical element on the conjugate element and / or an application, in particular a screwing or a rotation or a plugging, of the conjugate element (10) on the almost cylindrical element (1) in a direction of rotation are made possible;in which, in a state, connected by the application, of the at least almost cylindrical element (1) and the conjugate element (10), the at least almost cylindrical element (1) cooperates with the conjugate element (10) in such a way that during a rotation of the at least almost cylindrical element (1) and / or the conjugate element (10) in the opposite direction to the direction of rotation, a frictional force is produced between the at least almost cylindrical element and the conjugate element such that the frictional force prevents a detachment of the at least almost cylindrical element (1) and the conjugate element (10) from each other.;

2. A fastening assembly (100) according to claim 1, wherein the at least almost cylindrical element (1) has a flat surface (2, 3), in particular ground, at at least one end region and the conjugate element (10) has a conjugate flat surface (13).

3. A fastening assembly (100) according to claim 2, wherein the flat surface (2, 3) and the conjugate flat surface (13) cooperate, in the connected state, by the application, in particular screwing or rotation or insertion, of the at least nearly cylindrical element (1) and the conjugate element (10), so that at least part of the friction force is produced.

4. A fastening assembly (100) according to any one of claims 1 to 3, wherein, in the state connected by application, in particular screwing or rotation or plugging, of the at least almost cylindrical element (1) and the conjugate element (10), the at least almost cylindrical element (1) cooperates with the conjugate element (10) such that, upon rotation in the opposite direction to the direction of rotation, a first twist of the at least almost cylindrical element (1) causes a narrowing of the cross-section (18) of the at least almost cylindrical element (1) in a region of the at least almost cylindrical part such that the narrowing of the cross-section (18) causes a clamping, producing at least part of the friction force, between the at least almost cylindrical element (1) and the at least almost cylindrical part.

5. A fastening assembly (100) according to any one of claims 1 to 4, wherein the at least nearly cylindrical part has a threadless portion (14) connecting in particular to the threaded portion (12).

6. A fastening assembly (100) according to any one of claims 1 to 5, wherein, in a state connected by the application, in particular screwing or rotation or plugging, of the at least almost cylindrical element (1) and the conjugate element (10), the at least almost cylindrical element (1) cooperates with the conjugate element (10) such that, during a rotation in the direction of rotation and a pulling movement along the longitudinal axis of the at least almost cylindrical element (1) and / or the conjugate element (10), a second twist of the at least almost cylindrical element (1) causes an enlargement of cross-section, making possible a detachment, of the at least almost cylindrical element (1) in a region of the at least almost cylindrical part.

7. A fastening assembly (100) according to any one of claims 1 to 6, wherein an inner diameter of the at least nearly cylindrical element (1) is adapted to an outer diameter of the at least nearly cylindrical part, in particular corresponds at least nearly to it.

8. A fastening assembly (100) according to any one of claims 1 to 7, wherein the connecting element (10) further has an overlap (16) which, in a state connected by the application, in particular screwing or rotation or insertion, of the at least almost cylindrical element (1) and the conjugate element (10), surrounds at least a region of the at least almost cylindrical element (1).

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