EP1039043B1 - 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 is from, for example DE-OS 1 650 304 or EP 45 298 known. This is supposed to be the problem be solved that when fastening the sanitary fitting the mother does not need to be turned completely against the assembly point, because even with special keys, the effort is still considerable. The mother only needs to go to the assembly point just before or slightly to be rotated, which is usually possible without major difficulties is. Bridging the remaining distance or the sanitary fitting the main tension is determined by two screws, which extend through lateral threads in the nut and against the assembly point be excited.

DE-U 90 12 411 is a sanitary fitting with the features of the preamble known from claim 1, which a holding plate with a through opening for a threaded shaft of the sanitary fitting. In these A flexible projection is sufficient for the through opening. This is loud Description provided that a clamp fit occurs in such a way that there is self-locking. This self-locking causes no bracket in itself. Finally, the threaded shaft a nut screwed on to fix the sanitary fitting.

US-A 5,906,401 describes a holding plate, which by lateral Tilt and the resulting clamping and screwing one in the mounting plate screw a sanitary fitting on a threaded shaft attached. Here are design specifications for the oblique Through opening necessary through the holding plate, which exactly are to be observed. Then the edges of the through hole clamp on the threaded shaft. Only in a very special angular position they do not engage in the threads and thus enable them Put off. Always sticking to this angular position makes it postponed however awkward.

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 is.

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 of 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 plugging direction there is a desired blocking 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 this, especially after loosening the clamping device, like a known mother can be removed by turning.

The at least one projection can be in the form 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 takes 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 pressed radially outwards and engages with increased force into the threads of the threaded shaft.

The evenness of the at least one projection can be adjustable or restrictable, in particular by the Clamping devices. 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 roughly replicate a rigid thread. In particular, the projections are evenly distributed. Through an even distribution, an undesirable Oblique sitting or tilting of the nut can be avoided.

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, one essentially 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 hole, these around the corresponding proportion of the thread pitch along the direction of attachment be arranged offset to one another or their outer edges accordingly can run. In this way it is possible for the mother to essentially exactly and without tilting axially over the threaded shaft lead or commit to it. According to another possibility, can a projection, in particular along its abutting the threaded shaft Edge or front, according to the thread course be formed obliquely. So the lead sits particularly well in that Thread. Furthermore, it is possible for a nut with several protrusions these with different dimensions in the circumferential direction of the threaded shaft. For example, projections in the Area of a clamping device can be made wider than others.

The clamping device can be in a radially wider area in the nut be arranged, in particular to ensure a stable attachment. Essentially, the widening can be matched to the clamping device, for example, it can roughly double the predominant number radial thickness of the nut. The mother can choose between relative to the clamping means, especially in areas without projections be made narrow.

According to the invention, the clamping means have at least one screw, which is in a threaded connection with the nut. Preferably the Screw can be fixed in the direction of attachment against the assembly point, all the more so to brace the mother against the assembly point. Preferably one Nut at least two screws, which can be evenly distributed, 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. The screw and / or the thread can also be used 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 one 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 means. 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 attachable. This insert carries one in the projection reaching through. The stake is can be advantageously fixed to the ring, for example by the 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 devices 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 due to different training or recesses of the ring 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.

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. there 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 Clamping screws 19. Furthermore, the washers 20 advantageous a certain, albeit low, elasticity on.

Stand from the inner edge of the through opening 16 in FIG. 1 to the left and to the right 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 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 its position essentially this measure, or due to the more angled 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 these 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 to Through opening 16 four rectangular tongues 22 distributed 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. 2 should i.a. 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 is possible to bet 29 identical with the same length and the same angle form the tongues 22 and the mother 11 nevertheless 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 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 diamond-shaped 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 namely prevented that an insert 29 can move or shift. Although 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 be 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 proceed. The sanitary fitting is with the threaded shaft 14 inserted from above through the recess 12 of the vanity top 15. From below 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 screws 19 are 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 be 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)

1. Plumbing fixture with a nut (11) to secure it to an installation site, in particular to a washstand, wherein the plumbing fixture with a threaded shank (14) reaches through an opening (12) of the installation site (13), wherein the nut with a through opening (16) may be guided via the threaded shank and has at least one fastening means (19) for attaching it to the installation site, wherein at least one shoulder (22) is provided as screw thread of the nut (11), which reaches into the through opening (16) and is formed in such a yielding way as to be axially attachable in an attaching direction, characterised in that the shoulder (22) positively fits against the screw threads (23) of the threaded shank (14) in a direction contrary to that of the attaching direction according to the type of a rigid screw thread to prevent the nut (11) being removed in a direction contrary to that of the attaching direction when the fastening means is loosened, wherein the fastening means has at least one screw (19) connected via a threaded connection (18) to the nut.
2. Plumbing fixture according to claim 1, characterised in that the at least one shoulder is formed according to the type of tongue, in particular a spring tongue (22), wherein it preferably reaches radially into the through opening (16) and runs diagonally to the attaching direction, and in particular at an angle of approx. 45°.
3. Plumbing fixture according to claim 1 and/or 2, characterised in that the yield capability of the at least one shoulder (22) is adjustable and preferably restrictable, in particular via the fastening means (19), wherein the yield capability preferably exists in a configuration in which the nut (11) is attached to the threaded shank (14) and the yield capability is blocked in a configuration in which the fastening means is at least partially fixed against the installation site (13), wherein in particular the shoulder in this configuration is essentially rigid.
4. Plumbing fixture according to at least one of the previous claims, characterised by several shoulders (22) distributed around the through opening (16) of the nut (11), which are in particular equally distributed, wherein the nut has at least two shoulders, and in particular an even number of shoulders.
5. Plumbing fixture according to at least one of the previous claims, characterised in that the at least one shoulder (22) in the area of the fastening means (19) may be supported at the nut (11), and in particular is connected to it in one piece, wherein the nut preferably has at least one shoulder per fastening means, and in particular two fastening means and at least two shoulders.
6. Plumbing fixture according to at least one of the previous claims, characterised in that the at least one shoulder (22) is flexibly connected to the nut (11), and in particular is manoeuvrable, wherein the flexibility is preferably formed between the nut and the contact area of the shoulder at the threaded shank (14), and in particular in the transition area of the nut to the shoulder.
7. Plumbing fixture according to at least one of the previous claims, characterised in that the at least one shoulder (22) is adapted in its length and/or bending capability with the thread course of the threaded shank (14), wherein several shoulders are preferably distributed offset along the attaching direction according to an equivalent proportion of the thread pitch.
8. Plumbing fixture according to at least one of the previous claims, characterised in that the fastening means (19) are positioned in a radially enlarged area of the nut (11), wherein the enlargement in particular is approximately double the predominantly radial width of the nut.
9. Plumbing fixture according to at least one of the previous claims, characterised in that the screw (19) may be fixed along the attaching direction against the installation site (13), wherein in particular two screws are positioned facing each other on the nut (11).
10. Plumbing fixture according to claim 9, characterised in that the at least one screw (19) is a self-cutting and/or self-locking screw, which is located in particular in a material sleeve (17) of the nut (11) in a self-cut screw thread (18), wherein the screw is preferably located in a metal screw thread.
11. Plumbing fixture according to at least one of the previous claims, characterised in that the nut (11) and/or the at least one shoulder (22) are made of metal, in particular of a spring sheet, and preferably of spring steel.
12. Plumbing fixture according to at least one of the previous claims, characterised in that the nut (11) is essentially a flat disc, preferably a plate with the through opening (16), wherein the disc in particular has the at least one fastening means (19) on an enlargement.
13. Plumbing fixture according to one of the previous claims, characterised in that the nut (11) is essentially formed by a flat ring (27), into which at least a strip-shaped mounting element (29) may be plugged, which supports the shoulder (22), wherein the mounting element may preferably be fixed to the ring, and in particular by the fastening means (19).
14. Plumbing fixture according to claim 13, characterised in that the mounting element (29) is at least L-shaped and encompasses the edge of the ring (27), but is preferably U-shaped and encompasses both sides of the ring, wherein particularly the fastening means (19) reaches through both sides of the U.
15. Plumbing fixture according to claim 13 or 14, characterised in that at least two mounting elements (29) offset against each other in an axial attaching direction are positioned on the ring (27), and are in particular offset according to the thread pitch of the threaded shank (14), wherein the mounting elements are preferably identical in form and in particular face each other.

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