Nut for fixing a component to a support

Abstract

The invention relates to a nut for fixing a component to a support, in particular a sanitary fitting to a worktop, comprising a first nut part, and a second female part, where the first nut part has at least two threaded tabs which have a thread on their radial inner side, wherein the two nut parts are arranged displaceably relative to one another along an axial axis, such that in a first position - open position - the threaded tabs of the first nut part can be arranged radially outwardly projecting, and that in a second position - closed position - the threaded tabs of the first nut part can be arranged by means of the second nut part, in particular radially inwardly projecting, for engagement in a corresponding external thread of the component, wherein the first and second nut parts are designed to be freely rotatable relative to one another about the axial axis.

Description

The invention relates to a nut for fixing a component to a support, in particular a sanitary fitting on a work plate, comprising a first nut part and a second nut part, wherein the first nut part has at least two threaded lugs which have a thread on their radial inner side, wherein the two nut parts are arranged displaceably relative to one another along an axial axis in such a way that in a first position - open position - the threaded lugs of the first nut part can be arranged so as to project radially outwards and in a second position - closed position - the threaded lugs of the first nut part can be arranged by means of the second nut part, in particular so as to project radially inwards, so as to engage in a corresponding outer thread of the component.The invention further relates to a system for securing a component to a carrier, comprising a nut.The invention furthermore relates to a method for fixing a component to a carrier.The invention also relates to a method for releasing a component fixed to a carrier.Although applicable to any components, the present invention will be described with reference to components in the form of sanitary fittings.Although applicable to any supports, the present invention will be described with reference to supports in the form of countertops.Sanitary fittings have become known in many ways. These are usually fixed to a work plate by the sanitary fitting extending with a corresponding fitting shank partially through a fastening opening of the work plate. To fix the sanitary fitting, the fitting shank has an external thread onto which a nut is screwed.The problem here is that the fitting shank is frequently long in order to be able to be used even with different thicknesses of the work plate. When mounting the sanitary fitting, it is then expensive and time-consuming in the case of thin work plates to apply the nut to the external thread of the threaded shank up to the final fixing position.From DE 10 2021 212 266 A1 a nut for fixing a component to a support, in particular a sanitary fitting on a counter top, has become known, comprising a first nut part and a second nut part, wherein the first nut part has at least two threaded lugs which have a thread on their radial inner side, wherein the threaded lugs are arranged so as to project radially outwards at a first angle and wherein the two nut parts are arranged so as to be axially displaceable relative to one another in such a way that in a first position - open position - the threaded lugs of the first nut part are arranged so as to project radially outwards and in a second position - closed position - the threaded lugs of the first nut part are pressed radially inwards by means of the second nut part for engagement with a corresponding outer thread of the component.However, the disadvantage here is that an additional stabilizing component is required for mounting a sanitary fitting, for example on a work surface. Moreover, high demands are required on the accuracy of the nut during production in order to prevent the fastening lugs from having a position which is not suitable for fastening. Thus, the production cost is comparatively high.It is therefore an object of the present invention to provide a nut for fixing a component to a carrier and a system for fixing a component to a carrier, which nut can be produced in a simple and cost-effective manner, enable a simple and rapid fixing and detachment of the component and for which as few additional components as possible are necessary.Another object of the present invention is to provide an alternative nut for securing a component to a carrier and an alternative system for securing a component to a carrier.Another object of the present invention is to provide a method for fixing a component to a carrier and a method for releasing a component fixed to a carrier, which can be carried out easily, quickly and reliably with a reduced operating space required for the assembly for an assembler.A further object of the present invention is to specify an alternative method for fixing a component to a carrier and an alternative method for releasing a component fixed to a carrier.In one embodiment, the present invention achieves the aforementioned objects in a nut for fixing a component to a carrier, in particular a sanitary fitting, on a work plate, comprising a first nut part and a second nut part, wherein the first nut part has at least two threaded lugs which have a thread on their radial inner side, wherein the two nut parts are arranged displaceably relative to one another along an axial axis in such a way that in a first position - open position - the threaded lugs of the first nut part can be arranged so as to project radially outwards and in a second position - closed position - the threaded lugs of the first nut part can be arranged by means of the second nut part, in particular so as to project radially inwards, for engagement in a corresponding outer thread of the component, as a result of which:, the first and second nut members are freely rotatable relative to each other about the axial axis.In a further embodiment, the present invention achieves the above-mentioned objects with a system for securing a component to a carrier, comprising a nut according to any one of claims 1-19, wherein the component has an external thread which corresponds to the thread of the nut, such that the nut can be screwed onto the external thread in its closed position and wherein, in its open position, the thread can be provided with an internal diameter which is greater than the external diameter of the external thread at least in a region.In a further embodiment, the present invention achieves the aforementioned objects with a method for fixing a component to a carrier, comprising the steps:- providing a nut according to any of claims 1-19 in the open position,providing the component, wherein the component has an external thread which corresponds to the thread of the nut, such that the nut can be screwed onto the external thread in its closed position,arranging the component on the carrier,pushing the nut in its open position over the external thread of the component until the nut rests with its second nut part against the carrier,actuating the first nut part until the nut is in its closed position for engaging the thread in the external thread of the component, andactuating the thread of the nut by rotating the nut to fix the component to the carrier.In a further embodiment, the present invention achieves the aforementioned objects with a method for achieving a component fixed to a carrier, comprising the steps of:- providing a nut according to any of claims 1-19 in its closed position on the component, wherein the component has an external thread corresponding to the thread of the nut and wherein the thread of the nut engages with the external thread of the component,actuating the thread of the nut by rotating the nut to release the component from the carrier until the nut is in its open position; andreleasing the nut for moving the nut into its open position via the external thread of the component for releasing the component from the carrier.One of the advantages achieved thereby is that simplified mounting of components on carriers by means of the nut is made possible. A further advantage is that during assembly the nut is forced essentially self-lockingly from its open position into the closed position and in this way a quick assembly with few handles is made possible. A further advantage is the simple and cost-effective production of the two nut parts, for example from plastic, preferably by means of injection molding. By the free rotation of the two nut parts relative to each other, it is possible to arrange, for example, stabilizing elements directly on or connected to the nut, which reduces additional components. Furthermore, for example, a stabilizing element can be freely oriented during the mounting on a work plate or the like.Further features, advantages and further embodiments of the invention are described below or become apparent thereby.According to an advantageous development of the invention, the first and second nut parts can be fixed to one another by means of a fixing device which is in particular designed to be releasable. The advantage of this is a flexible and simple fixing of the two nut parts to one another, for example in order to provide limited axial displaceability. The nut parts can be detachably fixed to one another.According to a further advantageous development of the invention, the fixing device comprises a latching, clipping or snapping device. The advantage of this is a simple and quick fixing of the two nut parts to one another.According to a further advantageous development of the invention, the fixing device has at least one link, in which at least one link element engages, in particular wherein the at least one link is arranged in the second nut part and the link element on the first nut part. This provides a simple and at the same time reliable guidance of the two nut parts. The term "link" is to be understood in the broadest sense and, in particular in the claims, preferably in the description, relates to recesses, openings, projections, recesses or the like which provide at least a partial restriction of the movability of a link element in the link.According to a further advantageous development of the invention, the fixing device comprises surfaces on the first and second nut parts which are slidable on one another and are beveled at an angle with respect to the axial direction, in particular wherein the angle is at least 5 degrees, in particular at least 10 degrees, preferably at least 15 degrees, in particular at least 30 degrees, with respect to the axial direction. This provides a sufficiently large pressing force of the threaded lugs on an external thread in the closed position without the installation space for the nut being substantially increased.According to a further advantageous development of the invention, a restoring device is arranged which is designed to exert a restoring force in the direction of the open position. This ensures easy releasability of the nut, for example, when the component is to be replaced for maintenance purposes. If the nut is actuated accordingly, the nut moves "automatically" into its open position, so that it can be removed quickly and easily, for example from a sanitary fitting shaft.According to a further advantageous development of the invention, the restoring device comprises a spring device having at least one spring element which is arranged between the first and second nut parts. An advantage of this is a simple and reliable provision of a restoring force.According to a further advantageous development of the invention, at least one retaining element, in particular a plurality of retaining elements, is arranged on the second nut part, wherein the at least one spring element can be arranged in a supporting manner on the at least one retaining element. The advantage of this is a reliable provision of a restoring force by the spring element.According to a further advantageous development of the invention, a retaining element is designed in the form of an edge of the second nut part. The advantage of this is that no separate retaining elements have to be formed.According to a further advantageous development of the invention, the at least one spring element is designed in the form of a disk spring which is arranged releasably between the first and second nut part or the at least one spring element is designed in the form of at least two, in particular symmetrically, projections arranged on the first and / or second nut part in the direction of the respective other nut part. The advantage of a spring, in particular made of metal, preferably a disk spring, is the reliable provision of spring force. An advantage of elastic and / or resilient projections which are arranged, for example, in the shape of a curve on the continuous imaginary circumferential surface of the first nut part is cost-effective production, since these can be formed, for example, directly on the first nut part or can thus be produced in one piece.According to a further advantageous development of the invention, the resetting device and the fixing device are designed in such a way that the resetting device and the fixing device cooperate to provide the open position. This enables a reduction of components as a whole, which lowers the manufacturing costs.According to a further advantageous development of the invention, the threaded lugs are arranged parallel to the axial direction in their unloaded state. This enables simple production of the threaded lugs with simultaneously high tolerances during production, without any longer being possible for the threaded lugs to engage in an external thread.According to a further advantageous development of the invention, the number of threaded lugs is less than 30, preferably less than 15, in particular less than 8, preferably 4 and more than 2.According to a further advantageous development of the invention, a holding-open device is arranged for providing the open position. This enables particularly simple assembly.According to a further advantageous development of the invention, the hold-open device has at least one elongate element which is held in or at at least one opening, in particular in a positive-locking or frictional-locking manner, and engages into the at least one opening during the transition from the open position into the closed position, in particular wherein the at least one elongate element and the at least one opening are arranged on the first nut part. The advantage of this is simple handling of the nut during assembly. A form-fit arrangement of the elongate element can be effected, for example, by means of one or more narrow webs which serve as predetermined breaking points in the opening, which webs hold the elongate element in or on the latter and break when a force is applied, that is to say when the two nut parts are pushed together, with the result that the elongate element is then pressed or pushed into the opening.According to a further advantageous development of the invention, the first nut part is arranged partially in the second nut part and the first nut part is arranged at least partially on the radial outer side of the second nut part or vice versa. The advantage of this is a defined arrangement and a defined guiding of the two nut parts against one another, which simplifies the handling of the nut, in particular during assembly.According to a further advantageous development of the invention, the second nut part has, on the axial side facing away from the first nut part, an abutment device for abutment of the nut on the component. This enables a reliable fixing of the component to a carrier by means of the nut.According to a further advantageous development of the invention, the contact device comprises a planar component which is in particular triangular. The advantage of this is a reliable fixing with simultaneously little material usage for the contact device, which can serve for aligning the component on the carrier by means of the nut.According to a further advantageous development of the invention, the contact device has at least one, in particular a plurality of, material weakenings, in particular slots, for separation. The advantage of this is a high adaptability of the nut on site by the assembler. This can adapt the installation device on site to the local conditions without great effort.Further important features and advantages of the invention are evident from the dependent claims, from the drawings and from the associated description of the figures with reference to the drawings.It is understood that the features mentioned above and those still to be explained below can be used not only in the respectively specified combination, but also in other combinations or alone, without departing from the scope of the present invention.Preferred embodiments and embodiments of the present invention are illustrated in the drawings and are explained in more detail in the following description, wherein the same reference numerals refer to the same or similar or functionally the same components or elements.This shows FIG. 1 shows a system with a nut according to an embodiment of the present invention in cross section in an open position; FIG. 2 shows a system with a nut according to an embodiment of the present invention in cross section in an open position; FIG. 3 shows the system according to FIG. 2 in a closed position; FIG. 4 is a three-dimensional top view of a nut according to an embodiment of the present invention; FIG. 5 shows in schematic form steps of a method according to one embodiment of the present invention; and FIG. 6 shows in schematic form steps of a method according to one embodiment of the present invention.FIG. 1 shows a system with a nut according to an embodiment of the present invention in cross section in an open position.In FIG. 1, a system 100 is shown with a nut 1 in its open position 201. The nut 1 comprises a first nut part 2 and a second nut part 3. The first nut part 2 further comprises threaded lugs 4 which, in the open position 201 in which the threaded lugs 4 are arranged radially free of load, are arranged parallel to the axial direction 101. A starting region 4 aof a threaded tab 4 is arranged substantially directly on or parallel to the surface of the first nut part 2, as is an end region 4 b, wherein two sliding surfaces 25, 26 are arranged in the end region 4 bon the radial outer side thereof, said sliding surfaces being inclined radially outwards (radial direction 102) with an angle 92 with respect to the axial direction 101. These sliding surfaces 25, 26, which in the end region 4 bsubstantially form a parallelogram in cross section, engage by means of a connection 30 in a slotted link 6 or recess of the second nut part 3, which is also substantially trapezoidal in cross section, in particular parallelogram-shaped, and both enables limited axial displaceability along the axial direction 101 of the two sliding surfaces 25, 26, and also limited radial movability of the end region 4 bto the outside. The end region 4 bhaving the sliding surfaces 25, 26 mentioned thus functions as a link element 7. the link 6 has an upper sliding surface 20 and a lower sliding surface 21 for this purpose, wherein the upper sliding surface 20 in the axial direction 101 corresponds to the sliding surface 25 and the lower sliding surface 21 in the axial direction corresponds to the sliding surface 26 of the link element 7.The second nut part 3, like the first nut part 2, is substantially designed as a hollow cylinder, wherein the inner diameter of the second nut part 3 is designed such that the second nut part 3 can be arranged above the first nut part 2 or the first nut part 2 at least partially in the interior of the second nut part 3. The upper edge of the second nut part 3 has a radially inwardly projecting circumferential projection 3a which serves as a stop for the first nut part 2 with its upper edge surface 2a. Furthermore, the circumferential protrusion 3 aalso serves as an insertion aid during assembly and to protect the first nut part 2 during assembly, so that the thread 5 does not damage the first nut part 2.If the first nut part 2 is now pushed further into the second nut part 3 in the axial direction 101 out of the open position 201, in other words if the upper edge surface 2 amoves towards the projection 3 ain the fixing direction 103, the sliding surface 26 no longer abuts against the sliding surface 21, but the sliding surfaces 20, 25 are now pressed against one another by the axial movement. This causes the end region 4 bto be pressed radially inward in the direction of a component 50 with external thread 50 aarranged in the first nut part 2, so that the thread 5 of the threaded lugs 4 can engage with the external thread 50 aof the component 50 arranged in the first nut part 2. Then, by rotating the first nut part 2, the nut 1 can be fixed to the component 50. The component 50 itself protrudes through a corresponding opening 51 ain a work plate 51 or a sanitary basin of a kitchen.Furthermore, a stabilizing triangle 52 is arranged in the upper region of the second nut part 3. Likewise, an annular seal 53 can be arranged there, which is supported in a recess or a projection 56 in the upper region of the second nut part 3.In order to be able to release the nut 1 again more easily, one or more spring elements 9 of a spring device 8 are arranged between the first nut part 2 and the second nut part 3, said spring elements providing a restoring force and pressing the first nut part 2 in the direction of the open position 201. Although it is possible to release the nut 1 even without spring elements 9, the spring elements 9 allow the open position of the nut 1 to be automatically obtained and the open position 201 to be reached after one or more revolutions, so that the nut 1 can then be removed without further rotation for disassembly.Alternatively or additionally to a spring element, a pin 11 projecting upward in the axial direction 101 can be arranged on the first nut part 2 in the radially outer region, which pin can engage in a corresponding opening 10 in the first nut part 2. In this case, the pin 11 can be held in the opening 10 via one or more webs, so that, on the one hand, free rotation of the two nut parts 2, 3 with respect to one another is ensured with simultaneous spacing of the two nut parts 2, 3 in the open position 201, and, on the other hand, the pin 11 is then pressed into the opening 10 by breaking the webs when the nut 1 is fixed, independently of the circumferential position of the two nut parts 2, 3 with respect to one another.The thread 5 of the threaded lugs 4 can be removed in the region adjacent to the starting region 4 a, i.e. one or more thread turns are shortened in order to provide as little overlap with an external thread 50 aof a component 50, which makes it possible to push the nut 1 onto a corresponding external thread 50 aof a component 50.Alternatively or additionally, the spring device 8 with a spring element 9' can also be arranged in the lower region of the first nut part 2 or in the transition region 40 between the first and second nut parts 2, 3, instead of the position above the first nut part 2. The spring element 9' is arranged on the first nut part 2 and abuts on the lower region of the second nut part 3. Overall, this is then pressed upward in the axial direction 101 relative to the first nut part 2. An advantage of such an arrangement is that the vertical overall extension along the axial direction 101 can be reduced in contrast to the arrangement of the spring device 8 with spring element 9. The arrangement shown in FIG. 1 conversely has the advantage that the width of the nut 1, i.e. the diameter perpendicular to the axial direction 101, can be reduced.The spring element 9 and / or the spring element 9' can each be designed as an additional component, in particular in the form of a disk spring. The respective spring element 9, 9' can then be designed such that it is held or inserted in a positive-locking manner on the first nut part 2.FIG. 2 shows a system with a nut according to an embodiment of the present invention in cross section in an open position and FIG. 3 shows the system according to FIG. 2 in a closed position.FIG. 2 shows a nut 1 according to FIG. 1 in the open position 201 and FIG. 3 in the closed position 202. The nut 1 according to FIG. 2 and FIG. 3 substantially corresponds to the nut 1 according to FIG. 1.In the closed position 202, the upper edge surface 2 a(see FIG. 1 ) is located directly on the projection 3 a(see FIG. 1 ) and the threaded lugs 4 are pressed inward or fixed radially in their position parallel to the axial direction 101. In other words, the threaded lugs 4 cannot be pressed against one another radially outwards on account of the sliding contact of the sliding surfaces 20, 25 (see FIG. 1 ) of the first and second nut parts 2, 3. As in the preceding figures, the component 50 extends through an opening 51 aand is connected to a base body 55 of a fitting on the upper side of the work plate 51 or the like for fixing it by means of a screw connection.FIG. 4 is a three-dimensional top view of a nut according to an embodiment of the present invention.FIG. 4 shows an oblique view from above of the second nut part 3. In the upper region, two triangular flat projections 13 are arranged which extend perpendicularly to the axial direction 101 and each have recesses 14. These recesses 14 can be cut through, for example, by means of a cutting tool and the projections 13 can thus be adapted to local circumstances.Overall, the two projections 13 together with the upper, second nut part 3 form a stabilizing triangle which rests flush from below, for example on a work plate, and prevents tilting of a sanitary fitting fixed to the work plate.For supporting the one or more spring elements 9 of the spring device 8, which is arranged between the two nut parts 2, 3 and presses them apart in the axial direction 101 with a prestressing force, hook-shaped or L-shaped projections 12 are arranged in the upper region of the second nut part 3 so as to project circumferentially and radially inward and downward. A spring element 9 in the form of a disk spring can be supported on these projections 12, for example.FIG. 5 shows in schematic form steps of a method according to an embodiment of the present invention.FIG. 5 shows steps of a method for fixing a component to a carrier.The method comprises the steps of:- providing S1 a nut 1 according to any of claims 1-19 in the open position 201,providing S 2 of the component 50, wherein the component 50 has an external thread 50 awhich corresponds to the thread 5 of the nut 1, such that the nut 1 can be screwed onto the external thread 50 ain its closed position 202,arranging S 3 the component 50 on the carrier 51,pushing S4 of the nut 1 in its open position 201 over the external thread 50a of the component 50 until the nut 1 rests with its second nut part 3 against the carrier 51,actuating S 5 the first nut part 2 until the nut 1 is in its closed position 202 for engaging the thread 5 with the external thread 50 aof the component 50, andactuating S6 the thread 5 of the nut 1 by rotating the nut 1 to fix the component 50 to the carrier 51.FIG. 6 shows in schematic form steps of a method according to an embodiment of the present invention.FIG. 6 shows steps of a method for releasing a component 50 fixed to a carrier 51, comprising the stepsproviding T1 a nut 1 according to any of claims 1-19 in its closed position 202 on the component 50, wherein the component 50 has an external thread 50a corresponding to the thread 5 of the nut 1, and wherein the thread 5 of the nut 1 engages with the external thread 50a of the component 50,actuating T2 the thread 5 of the nut 1 by rotating the nut 1 to release the component 50 from the carrier 51 until the nut 1 is in its open position 201, andreleasing T3 of the nut 1 for bringing the nut 1 into its open position 201 via the external thread 50a of the component 50 for releasing the component 50 from the carrier 51.In summary, at least one embodiment of the present invention has at least one of the following features and / or can provide at least one of the following advantages:Simple, cost-effective and rapid assembly and disassembly.Simple, cost-effective production.Few components for the nut."Self-locking" nut.Elimination of additional components, for example a stabilizing triangle and / or a washer.Positively controlled position of the threaded lugs on the first nut part by the second nut part.Although the present invention has been described on the basis of preferred exemplary embodiments, it is not restricted thereto, but can be modified in a variety of ways.List of reference characters1 Nut 2 First nut part 2a Edge surface 3 Second nut part 3a Projection 4 Threaded tab 4a Initial region 4b End region 5 Thread 6 Link 7 Link element 8 Spring device 9, 9' Spring element 10 Cutout 11 Pin 12 Projection 13 Planar projection 14 Recess 20 Upper sliding surface 21 Lower sliding surface 25 Sliding surface 26 Sliding surface 30 Clip connection 40 Transition / contact region 50 Component 50a External thread 51 Carrier 51a Opening 52 Stabilizing triangle 53 Annular seal 55 Basic body Fitting 56 Projection 92 Angle 100 System 101 Axial direction 102 Radial direction 103 Fixing direction 201 Open position 202 Closed position S1-S6 Steps of a method T1-T3 Steps of a methodReferences included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedDE 10 2021 212 266 A1

[0009]

Claims

Nut (1) for fixing a component to a support, in particular a sanitary fitting on a counter top, comprising a first nut part (2) and a second nut part (3), wherein the first nut part (2) has at least two threaded lugs (4) which have a thread (5) on their radial inner side, wherein the two nut parts (2, 3) are arranged so as to be displaceable (101) relative to one another along an axial axis in such a way that in a first position - open position (201) - the threaded lugs (4) of the first nut part (2) can be arranged so as to project radially outwards, and in a second position - closed position (202) - the threaded lugs (4) of the first nut part (2) can be arranged so as to project radially outwards by means of the second nut part (3), in particular so as to project radially inwards, A nut part (2, 3) which can be arranged to engage in a corresponding external thread (50a) of the component (50), characterized in that the first and second nut parts (2, 3) are configured to be freely rotatable relative to one another about the axial axis (101).Nut (1) according to claim 1, characterised in that the first (2) and second nut part (3) can be fixed to one another by means of a fixing device (6, 7), which is in particular designed to be releasable.Nut (1) according to claim 2, characterised in that the fixing device (6, 7) comprises a locking, clipping or snapping device (30).Nut (1) according to either of Claims 2 and 3, characterized in that the fixing device (6, 7) has at least one link (6) in which at least one link element (7) engages, in particular wherein the at least one link (6) is arranged in the second nut part (3) and the link element (7) on the first nut part (2).Nut (1) according to one of Claims 1 - 4, characterized in that the fixing device (6, 7) comprises surfaces (20, 21; 25, 26) on the first and second nut parts (2, 3) which are slidable on one another and are beveled at an angle (92) with respect to the axial direction (101), in particular wherein the angle (92) is at least 5 degrees, in particular at least 10 degrees, preferably at least 15 degrees, in particular at least 30 degrees, with respect to the axial direction (101).Nut (1) according to one of Claims 1 - 5, characterized in that a restoring device (8) is arranged which is designed to exert a restoring force in the direction of the open position (201).Nut (1) according to claim 6, characterised in that the restoring device (8) comprises a spring device with at least one spring element (9, 9'), which is arranged between the first and second nut parts (2, 3).Nut (1) according to claim 7, characterised in that at least one retaining element (12), in particular a plurality of retaining elements (12), are arranged on the second nut part (3), wherein the at least one spring element (9, 9') can be arranged in a supporting manner on the at least one retaining element (12).Nut (1) according to claim 8, characterised in that a retaining element (12) is formed in the form of an edge of the second nut part (3).Nut (1) according to one of Claims 7 - 9, characterized in that the at least one spring element (9) is designed in the form of a disk spring which is arranged releasably between the first and second nut parts (2, 3) or in that the at least one spring element (9) is designed in the form of at least two, in particular symmetrically, projections arranged on the first and / or second nut part (2, 3) in the direction of the respective other nut part.Nut (1) according to one of Claims 1 - 10, characterized in that the restoring device (8) and the fixing device (6, 7) are designed in such a way that the restoring device (8) and the fixing device (6, 7) cooperate to provide the open position (201).Nut (1) according to one of Claims 1 - 11, characterized in that the threaded lugs (4) are arranged parallel to the axial direction (101) in their unloaded state.Nut (1) according to one of Claims 1 - 12, characterized in that the number of threaded lugs (4) is less than 30, preferably less than 15, in particular less than 8, preferably 4 and more than 2.Nut (1) according to any of claims 1-5, characterized in that a hold-open device (10, 11) is arranged for providing the open position (201).Nut (1) according to claim 14, characterised in that the hold-open device has at least one elongate element (11), which is held in or at at least one opening (10), in particular in a positively locking or frictional manner, and engages into the at least one opening (10) during the transition from the open position (201) into the closed position (202), in particular wherein the at least one elongate element (11) and the at least one opening (10) are arranged on the first nut part (2).Nut (1) according to any of claims 1-15, characterized in that the first nut part (2) is partly arranged in the second nut part (3) and the first nut part (2) is at least partly arranged on the radial outside of the second nut part (3) or vice versa.Nut (1) according to one of Claims 1 - 16, characterized in that the second nut part (3) has, on the axial side facing away from the first nut part (2), an abutment device (52, 53) for abutment of the nut (1) on the component (50).Nut (1) according to claim 17, characterised in that the contact device (52, 53) comprises a planar component which is in particular triangular.Nut (1) according to claim 17 or 18, characterised in that the contact device (52, 53) has at least one, in particular a plurality of, material weakenings (13), in particular slots, for separation.System (100) for fixing a component (50) to a carrier (51), comprising a nut (1) according to one of Claims 1 - 19, wherein the component (50) has an external thread (50a) which corresponds to the thread (5) of the nut (1), such that the nut (1) can be screwed onto the external thread (50a) in its closed position (202), and wherein the thread (5) can be provided with an internal diameter which is greater than the external diameter of the external thread (50a) at least in a region (4b) in its open position (201).Method for fixing a component (50) to a carrier (51), comprising the steps of: - providing (S1) a nut (1) according to one of Claims 1 - 19 in the open position (201), - providing (S2) the component (50), wherein the component (50) has an external thread (50a) which corresponds to the thread (5) of the nut (1) such that the nut (1) can be screwed onto the external thread (50a) in its closed position (202), - arranging (S3) the component (50) on the carrier (51), - pushing (S4) the nut (1) in its open position (201) over the external thread (50a) of the component (50) until the nut (1) abuts the carrier (51) with its second nut part (3), actuating (S5) the first nut part (2) until the nut (1) is in its closed position (202) for engaging the thread (5) with the external thread (50a) of the component (50), and actuating (S6) the thread (5) of the nut (1) by rotating the nut (1) for fixing the component (50) to the carrier (51).Method for releasing a component (50) fixed to a carrier (51), comprising the steps of: - providing (T1) a nut (1) according to any of claims 1-19 in its closed position (202) on the component (50), wherein the component (50) has an external thread (50a) corresponding to the thread (5) of the nut (1), and wherein the thread (5) of the nut (1) engages in the external thread (50a) of the component (50), - actuating (T2) the thread (5) of the nut (1) by rotating the nut (1) to release the component (50) from the carrier (51) until the nut (1) is in its open position (201), and - releasing (T3) the nut for bringing the nut into its open position (201) via the external thread (50a) of the component (50) for releasing the component (50) from the carrier (51).

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