EP1039043A2 - Sanitary fitting with a nut for its fixing - Google Patents

Abstract

A threaded shaft on the fitting projects through an installation aperture, and a nut with tensioner is placed over it. The nut (11) has at least one projection (22) to act as thread. This projects into the installation aperture (16) and is formed to yield for axial attachment in attachment direction. The projection engages positively like a rigid thread, against the threads (23) of the threaded shaft against direction of attachment. The projection is formed esp. like a spring tongue, which pref. extends radially into the aperture and extends at an angle of approx. 45 degrees relative to it.

Description

Field of application and state of the art

The invention relates to a sanitary fitting with a nut for attachment according to the preamble of claim 1.

A sanitary fitting with a nut of this type is for example known from DE-OS 1 650 304 or EP 45 298. This is to solve the problem that the attachment the sanitary fitting does not completely replace the mother needs to be turned against the assembly point, because even with special keys, the effort is still considerably. The mother only needs there until just before or to be easily turned to the assembly point, what in the Is usually possible without major difficulties. The bridging the remaining distance or the the sanitary fitting the main tension is determined by two screws, which extend through lateral threads in the nut and against the assembly point to be excited.

Task and solution

It is an object of the invention, a sanitary fitting of the above to create the type mentioned, in which the fastening process simplified and can be done safely handle.

This object is achieved with the features of claim 1. There is at least one projection as the thread of the nut, the partially thread-like in the through opening sufficient and for an axial plug-in in the plug-on direction can be formed by own evasion. It lies in the opposite direction according to Art a rigid thread against at least a thread of the threaded shaft. That way it is advantageously possible to attach the nut to the threaded shaft, without having to turn it. At least a lead dodges or takes hold - the pluggability not obstructing - in the threads. For example it can be done like a ratchet on the threads drive along. So can the elaborate unscrew the Most of the nut on the threaded shaft, possibly even completely omitted. By positively fitting the projection against the threads of the threaded shaft the desired direction is blocked here according to a normal mother. The main setting of the threaded shaft against the assembly point over the Mother is done by the clamping device. To remove the mother can, especially after loosening the clamping device, like a known mother can be removed by turning.

The at least one projection can be in the manner of a flap or a tongue, in particular a spring tongue. It advantageously projects radially into the Through opening, in particular obliquely to the direction of attachment runs, for example at an angle between 20 ° and 70 °, preferably about 45 °. During the Projection assumes this angle when plugged in, it may differ in its original state, in particular to be taller. This will give you the edge when you plug it on pushed radially outwards and engages with increased force into the threads of the threaded shaft.

The at least one protrusion can be avoided be adjustable or restrictable, in particular by the Clamping device. So it is possible in a configuration to Pushing the nut onto the threaded shaft provides evasiveness to provide, while after an at least partial Determination against the assembly site, in particular by the Clamping device, the evasibility can be blocked. On this way the nut can easily be on the threaded shaft be plugged on. By bracing the mother with the clamping device against the assembly point becomes the lead so to speak activated as a thread and forms approximately a part of a rigid thread and prevents the Mother. It is possible to release the projection by loosening the clamping means just as to disable the mother for disassembly without being able to remove complex screws.

The mother can have several distributed around her through opening Have projections. An even number of protrusions applies as beneficial. The mother preferably has at least two Protrusions on to secure blockage against slipping to achieve or approximately replicate a rigid thread. In particular, the projections are evenly distributed. Through an even distribution, an undesirable Avoid sitting at an angle or tilting the nut.

The at least one projection is preferably in the range of one Clamping device can be supported on the nut. That's how a power transmission is in the chain assembly point-clamping device-nut-projection-threaded shaft as directly accessible as possible. To increase the stability of the mother or that achieved by it The projection can also be fastened in that of the assembly point facing area supported on the mother or be connected to her. The projection is particularly preferred integrally connected to the nut to increase stability and to facilitate assembly with captive individual parts. In particular, the nut and the projection can be made in one piece easily in a multi-step process Manufacturing process to be trained. At least one Projection can be provided per clamping device, one Mother advantageously two clamping means and at least two projections having.

According to an embodiment of the invention, the projection can be flexible be connected to the mother, especially movable. This flexibility is advantageous between the mother or a nut body and the contact area of the projection the threaded shaft, especially in the area of Transition from the mother to the lead. The flexibility can be caused by thinning or weakening the material in the manner of a joint, especially in the transition area mentioned above, be achieved, essentially one rigid material can be used. Another possibility is an inherently flexible material, this flexibility can be achieved by a low material thickness can.

The projection can advantageously be of length and / or angle on the thread course of the threaded shaft be coordinated. This is particularly advantageous if several projections are distributed around the through opening, this by the corresponding proportion of the thread pitch staggered along the direction of attachment his or her outer edges can run accordingly. On in this way it is possible to make the mother substantially accurate and without canting axially over the threaded shaft or to fix it. According to another possibility, can a protrusion, especially along its on the threaded shaft adjacent edge or front, the thread course be formed accordingly obliquely. This is how the lead sits particularly good in the thread. Furthermore, it is possible in the case of a mother with several projections, these with different Dimensions in the circumferential direction of the threaded shaft to train. For example, projections in the area of a clamping device be made wider than others.

The clamping means can be in a radially wider range the mother must be arranged, in particular around a stable attachment to ensure. The broadening is essentially can be tuned to the clamping means, for example they roughly double the predominant radial thickness of the Amount to mother. The nut can be between the clamping devices, especially in areas without protrusions, relative be made narrow.

The clamping means can advantageously at least one screw have in a threaded connection with the nut stands. The screw is preferably in the push-on direction against the assembly point, so the mother against to brace the assembly point. Preferably a mother has at least two screws that are evenly distributed can, especially two opposite screws.

At least one screw can be a self-tapping screw be particularly advantageous in a bore in a somewhat elongated material nozzle or in a Pipe attachment, the nut is screwed in. The thread cuts you yourself. To transmit greater forces can, the screw is preferably in a thread Metal. Furthermore, the screw and / or the thread be self-locking.

The at least one protrusion and / or essentially the whole mother can be made of metal, especially completely made of metal. One possibility is a resilient metal, for example a strong spring plate, preferably made of spring steel. Alternatively, it is possible for the mother to at least partially made of plastic, especially the mother body. A projection can also be made of plastic.

According to one embodiment of the invention Mother essentially a flat washer or a flat one Plate with a through opening, being at least a widening, preferably two widenings, one Has clamping means. Goes from the edge of the through opening a head start in one of the ways described above from, in particular a lead in the area of a Clamping device. Such a nut can advantageously be made of metal be made.

According to another preferred embodiment of the Invention, the mother is essentially from a flat Ring formed on the side, especially in the area of radial widenings, a strip-shaped insert can be attached or is pluggable. This insert carries one in the projection reaching through. The stake is can be advantageously fixed to the ring, for example by Clamping device can be set. Another way to use to attach to the ring is to guide it in a slot passing through the slot in at least one, preferably in two directions. A stake can be at least L-shaped and the edge, in particular encompass the outer edge of the ring. Particularly advantageous it is U-shaped and encompasses the ring on both sides, preferably radially from the outside inwards. On Clamping means can range from use, in particular through both legs of a U-shaped insert.

It is possible to place the bets, possibly also the ones inside Tension screws, with a certain play on the nut to attach such that this game the evasibility of the projection on the insert influenced or reinforced. By tightening the clamping device, the game and thus one Increased evasiveness can be eliminated.

A nut can have at least two inserts, in particular opposite inserts, which are advantageous in axial Are staggered to each other. This can by different training or recesses of the ring can be achieved in the field of operations. The axial displacement can correspond to the thread pitch of the threaded shaft, So be about half the height of the slope. The manufacturing effort can be significantly reduced if the Inserts are identical.

These and other features go beyond the claims also from the description and the drawings, wherein the individual characteristics individually or in groups in the form of sub-combinations in one embodiment of the invention and in other fields be and advantageous as well as protective designs can represent, for which protection is claimed here. The division of the application into individual sections as well Subheadings limit those made under them Statements are not generally applicable.

Brief description of the drawings

Fig. 1

einen Schnitt durch einen Gewindeschaft einer Sanitärarmatur samt einstückiger Mutter,

Fig. 2

eine Draufsicht auf die Mutter aus Fig. 1,

Fig. 3

eine Darstellung ähnlich Fig. 1 mit einer Mutter, die aus einem Ring mit Einsätzen besteht und

Fig. 4

eine Draufsicht auf die Mutter aus Fig. 3.

Several embodiments of the invention are shown in the drawings and are explained in more detail below. The drawings show:

Fig. 1

a section through a threaded shaft of a sanitary fitting including a one-piece nut,

Fig. 2

2 shows a top view of the nut from FIG. 1,

Fig. 3

a representation similar to FIG. 1 with a nut, which consists of a ring with inserts and

Fig. 4

3 shows a top view of the nut from FIG. 3.

Description of execution examples

Fig. 1 shows a section through a nut 11, the over one guided through a recess 12 in an assembly point 13 Threaded shaft 14 of a sanitary fitting is inserted. Here The threaded shaft 14 runs through a through opening 16 the mother 11. Are laterally from the through opening 16 Tensioning screws 19 through material nozzles 17 with a thread 18 guided. The clamping screws 19 lie over washers 20 at the bottom of the assembly point or the vanity top 15 on. The washers 20 run advantageously ring-shaped around the recess 12 and serve to protect the mostly ceramic vanity top 15 against the metallic Tensioning screws 19. Furthermore, the washers 20 advantageous a certain, albeit low, elasticity on.

Stand from the inner edge of the passage opening 16 in FIG. 1 to the left and to the right side of the threaded shaft 14, respectively a spring tongue 22 radially inwards, which against a thread 23 of the threaded shaft 14 are pressed. It can be seen that the left spring tongue 22 angled more and is longer than the right spring tongue 22. This enables it, the level of the nut 11 parallel to the vanity top 15 or perpendicular to the longitudinal axis of the threaded shaft 14 hold. The catchy thread of the threaded shaft 14 is on two opposite sides, as in the area of the Spring tongues 22, each by half the distance between two threads 23 offset against each other. To the nut 11 in the illustrated The left spring tongue 22 is to hold the position essentially this measure, or due to the more angled Course a little more, compared to the right spring tongue 22 extended.

The right spring tongue 22 has the same spring strength like most of the mother 11. If this strength in the for the mother 11 selected material for a turn of the Spring tongue 22 when plugging on the threaded shaft 12 as There are several remedies to prove too rigid and cumbersome to disposal. For one, it is possible to see material weaknesses to be provided, in particular in the area of the transition from the Tongue 22 to the nut 11 with the kink. An alternative Possibility is realized in the left spring tongue 22. This is visibly thinner than the right one Tongue 22, about half as thick. The leap in material thickness lies in the area of the transition of the tongue 22 to the Nut 11. The different material thickness can either be provided at the beginning when producing the nut 11. A Another option is to stamp the tongue 22 flatten them and possibly enlarge them. The Material nozzles 17 can after molding the mother 11 known methods can be produced. The thread 18 in the Material nozzles 17 can by a self-tapping design the clamping screws 19 generated when screwing them in become.

The top view of the nut 11 in Fig. 2 shows how around the Through opening 16 distributed four rectangular tongues 22 are, the tongues 22 are relatively narrow. The basic shape of the nut 11 is approximately rhomboidal strongly rounded corners. In the two, apart the corners are the material nozzles 17 with the threads 18 appropriate. Two of the tongues 22 protrude in the area of the thread 18 from the mother 11, the other two tongues are each between. Due to the different length of the display the tongues 22 in FIG. be made clear that they with differently strong or deeply formed threaded shafts 14 or threads 23 can be used. To save material, recesses 25 in the nut 11 be provided.

3 corresponds to the arrangement of vanity top 15 with recess 12, assembly point 13, threaded shaft 14 and Disks 20 of those in Fig. 1. However, in the Fig. 3, the nut 11 from a circumferential ring 27 with the Through opening 16 and two left and right over the Ring 27 pushed inserts 29 formed. The missions 29 have material nozzles on their side facing the wash basin 15 17 and thread 18, essentially corresponding to FIG. 1, on. The inserts 29 are essentially U-shaped, the clamping screws 19 in the threads 18 both Pierce thigh. The hole should be in the lower one Leg be so large that the clamping screw 19 without thread effect can be inserted and only in the thread 18 of the material nozzle 17 engages.

In the area of the inserts 29, the ring 27 has one Incision 31 on the left half of the to the Washstand 15 facing side is provided on the right Half on the opposite side. The depth of these cuts 31 can be essentially half the distance between two Threads 23 correspond and cause the left insert 29 has this greater distance from the wash basin than the right bet 29. So it's possible to bet 29 identical with the same length and the same angle form the tongues 22 and the mother 11 still how described above to keep parallel to the wash basin 15.

Two possible embodiments of the ring 27 are shown. The insert 29 is essentially tight on the left Ring. An alternative training is shown on the right, in which the bore 30 runs obliquely through the ring 27 or expanded. Furthermore, the ring 27 is in the upper Area of the system on the insert 29 radially inwards beveled and the incision 31 made deeper than in the training on the left. This enables that the insert 29 together with screw 19, as at the lower end of the Threaded shaft 14 shown on the right, pivoted on the ring 27. When pivoting through the oblique Formation of the bore 30 and the ring 27 in the area of Incision 31 is made possible, the spring tongue 22 can something swing out of the threads 23. This can be postponed the nut over the threaded shaft 14 simplified or the spring tongues 22 can be made more rigid his. When tightening the clamping screw 19 against the washer 20 the stake is straight again, as on the right shown above. The incisions 31 are to be dimensioned in such a way that the inserts 29 in the straightened state Have a distance of half a pitch to each other.

The lower leg of the insert 29 is not sufficient beyond the ring 27 into the through opening 16. Alternatively it is possible to make this leg similar to the top to be provided with an angled spring tongue 22 which also form-fitting to one, especially the next, Thread 23 of the threaded shaft 14 creates. This can the holding effect of the inserts 29 and the tongues 22 doubled or their holding forces for thinner materials stay the same. In this case, make sure that the Thickness of the ring 27 in the area of the incisions 31 approximately corresponds to the distance between two threads 23 around the tongues 22 to train in parallel and of equal length.

In the top view of the nut 11 in Fig. 4, the shape of the ring 27 and the formation of the inserts 29 shown. The basic shape of the nut 11 corresponds to that in Fig. 2, is thus rhomboid with strongly rounded corners. The incisions are opposite on the left and right 31 with the inserts 29, the right incision 31 is shown in dashed lines because it cannot be seen from above is. Furthermore, another advantageous function of the Incision 31 can be seen. It is prevented that an insert 29 can move or shift. Is this after screwing the screw 19 through the two Leg of the insert 29, in particular through the material nozzle 17, only possible as a rotation around this clamping screw. But this rotatability is also made by the incisions 31 advantageously prevented.

The inner edges 24 of the tongues 22 shown in dashed lines can either, as shown with the left tongue 22, run straight, or the thread of the threaded shaft 14 be adjusted, as with the right tongue 22. A rounding similar to the right tongue 22 has the advantage that it over its full width with its inner edge 24 on a thread 23 is present. To further improve this creation, it is possible to slope the inner edge 24 in its course to bend the threaded shaft 14 accordingly.

The inserts 29 are advantageously made of metal, in particular a metal or spring steel sheet. Because of the identical training of the inserts 29 can manufacturing, storage and Repair costs can be reduced. The ring 27 can be advantageous be made of plastic, for example a glass fiber reinforced Plastic.

function

For mounting a sanitary fitting or the like. with a threaded shaft 14 on a vanity top 15 is as follows proceeded. The sanitary fitting is with the threaded shaft 14 inserted from above through the recess 12 of the vanity top 15. From the bottom the washers 20 over the threaded shaft 14 out. A mother 11 is then prepared and the clamping screws 19 are screwed in at least as far as that they are a bit across to the vanity top 15 facing side of the nut 11 or the material nozzles 17th survive, preferably a few threads. After that, the Nut 11 with the through opening 16 via the threaded shaft 14 out and as far as possible up against the vanity top 15 are pressed. In this process, give way the spring tongues by sliding along their tops or Inner edges 24 on the threads 23 due to their evasibility respectively flexibility, whereby according to seek each thread 23 to grip the thread again. With an alternative training acc. the right in Fig. 3 can avoid the entire insert 29 when slipping on.

As a rule, the clamping screw 19 is not yet complete rest on the washers 20 when the spring tongues 22 one in FIGS. 1 and 3 shown stable system have caused against the thread of the threaded shaft 14. Now either tighten the nut 11 and / or the Turn the clamping screws 19 until they are against the Washers 20 fit snugly as well as those for fastening of the threaded shaft 14 apply the necessary pressing force. Care should be taken to ensure that the clamping screws 19 tighten evenly or alternately to prevent jamming to avoid the mother 11 as far as possible. The stability of the Tongues 22 can both by their material thickness as well be determined by their angulation. The weaker the angle, or the larger the angle of the spring tongue 22 to Longitudinal axis of the threaded shaft 14 is, the stronger act the forces occurring during tensioning in the radial direction directly on the nut 11 or via the inserts 29 and the Clamping screw 19 on the ring 27. If the angle is too large or At angles close to 90 ° there is a risk that the spring tongues 22nd snap by the pressure of the clamping screws 19 and the Tension is released. There are advantageous angular ranges at max. 80 °, preferably below 70 °, to a minimum of about 20 °.

In addition to the opportunities presented for training a spring action of the tongues 22, there are further design options, which incorporate the advantages of the invention. So it is possible to provide resilient arms that are on are attached at one end to the nut 11 and on their other end carry protrusions that go into the threads 23 should intervene. The projections can, for example be sawtooth-shaped so that they are on the one hand can be guided over the thread of the threaded shaft, with a movement in the opposite direction as by the clamping process however, be pressed into the thread.

To remove the nut 11 or to loosen the connection the clamping screws 19 are loosened and then, due to the non-peelability of the nut 11 in this direction, this like a normal nut from the threaded shaft 14 turned.

Claims (15)

Sanitary fitting with a nut for attachment to a Installation site, especially at a washstand, where the sanitary fitting with a threaded shaft through a Recess of the assembly site is sufficient, the mother with a through opening on the threaded shaft is and at least one clamping device for contact with the Installation site, characterized in that as Thread of the nut (11) at least one projection (22) is provided, which extends into the through opening (16) and for axial attachability in one attachment direction is evasive, being contrary the direction of attachment in the manner of a rigid thread against the threads (23) of the threaded shaft (14) fits positively. Sanitary fitting according to claim 1, characterized in that the at least one projection in the manner of a tongue, in particular a spring tongue (22), is formed, wherein it preferably partially radially into the through opening (16) is sufficient and runs at an angle to the direction of attachment, especially at an angle of about 45 °. Sanitary fitting according to claim 1 and / or 2, characterized in that the evasiveness of at least a projection (22) adjustable, preferably restrictable, is, in particular by the clamping means (19), preferably in a configuration for Place the nut (11) on the threaded shaft (14) the evasiveness exists and in the configuration of the against the assembly point (13) at least partially determined Clamping device the evasibility is blocked in particular the lead in this configuration is essentially rigid. Sanitary fitting according to at least one of the preceding Claims, characterized by several around the passage opening (16) of the nut (11) distributed projections (22), which are in particular evenly distributed, wherein the nut has at least two protrusions, in particular an even number of tabs. Sanitary fitting according to at least one of the preceding Claims, characterized in that the at least a projection (22) in the area of a clamping means (19) can be supported on the nut (11), in particular in one piece connected to her, the mother preferably has at least one projection per clamping device, in particular two clamping means and at least two projections. sanitary fitting according to at least one of the preceding Claims, characterized in that the at least a projection (22) flexibly connected to the nut (11) is, in particular agile, the flexibility preferably between the nut and the contact area of the projection on the threaded shaft (14) is, especially in the area of transition from mother to the lead. Sanitary fitting according to at least one of the preceding Claims, characterized in that the at least a projection (22) in length and / or an angle on the thread course of the threaded shaft (14) is coordinated, preferably several distributed Ledges around the distribution corresponding Proportion of thread pitch along the direction of attachment are offset. Sanitary fitting according to at least one of the preceding Claims, characterized in that the clamping means (19) in a radially wider area of the nut (11) are arranged, the widening in particular about twice the predominant radial thickness of the Mother is. Sanitary fitting according to at least one of the preceding Claims, characterized in that the clamping means have at least one screw (19) in a Threaded connection (18) with the nut (11) and preferably along the direction of attachment against the assembly point (13) can be determined, in particular at the mother arranged two opposing clamping devices are. Sanitary fitting according to claim 9, characterized in that the at least one screw (19) is self-tapping and / or self-locking screw, which in particular in a material nozzle (17) of the nut (11) in a self-cut thread (18), the Screw preferably sits in a metal thread. Sanitary fitting according to at least one of the preceding Claims, characterized in that the nut (11) and / or the at least one projection (22) made of metal are, in particular from a spring plate, preferably Spring steel. Sanitary fitting according to at least one of the preceding Claims, characterized in that the nut (11) essentially a flat disc, preferably a Plate, with the through hole (16), the Washer in particular the at least one clamping means (19) has a widening. Sanitary fitting according to at least one of the preceding Claims, characterized in that the nut (11) essentially formed by a flat ring (27) at least one strip-shaped insert (29) is pluggable, which carries the projection (22), wherein the insert can preferably be fixed on the ring, can be fixed in particular by the clamping means (19). Sanitary fitting according to claim 13, characterized in that the insert (29) is at least L-shaped and engages around the edge of the ring (27), preferably in a U-shape is formed and encompasses the ring on both sides, in particular the clamping means (19) by the two Leg of the U's is enough. Sanitary fitting according to claim 13 or 14, characterized in that at least two inserts (29) in axial Push-on direction offset to each other on the ring (27) are arranged, in particular according to the thread pitch of the threaded shaft (14) are offset, wherein preferably the inserts are identical and oppose each other in particular.

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