DE3306788A1 - OUTLET FOR SANITARY COMPONENTS, LIKE HAND AND SINK TOWELS, BATHTUBS OD. DGL. - Google Patents

Description

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description

The invention relates to an outlet for sanitary components, as for hand basins and sinks, bathtubs or the like., With a substantially circular cylindrical sleeve-shaped water-bearing Outer part and with an essentially circular cylindrical collar-shaped water-bearing inner part plugging into the latter, alternatively, the fixed water inlet or the pivotable outlet pipe is assigned to the outer or inner part are, the outer and inner parts each made of a substantially rigid hard material, in particular of metal, such as e.g. Brass, exist and are arranged rotatably relative to one another and wherein the inner part on its outer circumferential surface at least one entropy-elastic ring-shaped seal held in an annular groove and at least one overlapping an axial partial area extending with a close sliding fit on the circular cylindrical inner lateral surface of the Support surface in the form of a circular cylindrical that is applied on the outside part Has outer circumferential surface.

The above-described run-out has become generally known through prior public use. With the well-known outlet forms the collar-like received in the sleeve-shaped outer part Inner part is a precision turned part with mostly two screwed-in annular grooves arranged at an axial distance from one another. In An O-ring made of entropy-elastic material is accommodated in each of these, the hardness of which is approximately 35 at the most Shore A is. So that the inner part, which is mostly soldered in like a nipple on the inside at the end of a discharge pipe, for example a pivoting movement cannot tilt with respect to the outer part is - mostly between the aforementioned annular grooves - for example

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Metal works

a support surface over a third of the axial length of the inner part intended. The support surface itself formed from the material of the inner part, e.g. made of brass, is a circular cylindrical outer surface, which is with a relatively tight sliding fit tolerance of about 0.02 - 0.05 mm on the Supports the inner circumferential surface of the sleeve-shaped outer part.

In the case of the outflow of this type described at the beginning, the very soft O-rings only perform a sealing function, while the support surface of the hard material, especially made of metal (such as brass), the support function to prevent tilting Fulfills.

The previously known outlet is afflicted with considerable deficiencies. In particular, the previously required cutting Precision machining very expensive. Also works the sliding pairing of hard material / hard material, in particular metal / metal, is in the area of the aforementioned support surface in the case of mixed and dry friction because of wear that causes annoying metal abrasion.

The use of the soft ones is particularly disadvantageous O-rings for so-called kitchen spouts, e.g. in connection with one-hand mixer, in which a large-sized, space-fixed inner part with large-diameter O-rings of the the outlet pipe supporting pivotable sleeve-shaped outer part is surrounded. During the pivoting movement of the outlet pipe This has the following disadvantageous effect: The very soft and slightly elongated O-rings partially adhere

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on the inner surface of the outer part and accumulate when pivoting, so that there is a non-uniform, resilient movement sequence.

In the case of another obviously previously used spout, which does not belong to the narrower category mentioned at the beginning, this is The nipple-like inner part is not a precision turned part, as the annular grooves intended to accommodate the O-rings are indented are. However, the inner part received with play in the outer part has no support surface whatsoever. This has the consequence that the inner part can be tilted very easily because of the very soft O-rings. This in turn can be detrimental Damage to the surface-refined, pivotable outlet pipe in the area of the fixed pipe through which it passes Lead union nut.

Based on the known outlet of this type described at the beginning, the invention is based on the object while avoiding the disadvantages of the known to create an outlet, which if possible bypassing more expensive Precision turned parts with a very simple design, at the same time low-friction, low-wear and also tilt-free Guidance of the inner part and at the same time the required sealing effect is permitted. According to the invention is This object has been achieved in that the inner part consisting of essentially rigid hard material with large play on all sides is included in the outer part, that each support surface of the inner part of a received in an annular groove, a support ring having a flat rectangular cross-section made of relatively hard set entropy-elastic material is formed, which at the same time as a seal on its end face adjacent to the flow cross section of the water

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a one-piece, cohesively molded sealing area forms, which consists of two between them having a groove open at the end, radially self-resiliently spread apart there is annular sealing strips.

According to the invention, the inner part is on all sides great play in the outer part. This can a precision manufacturing of the inner part is not necessary. The big game on all sides is made possible by flat rectangular seals balanced, which is deformable in an entropy-elastic manner, otherwise however, compared to the previously known O-rings, they are set to be much harder. The fit tolerance of the plastic injection molding produced support rings is relatively large and moves in the range of about 0.1-0.2 mm. Of the The support ring can even be slightly oversized compared to the clear width of the outer part, so it is when inserted slightly inward over an inlet radius of the outer part pressed.

Because the support surface is in each case a relative to the total axial length of the inner part has a large axial length, e.g. in the order of about one third of the total axial length of the inner part, the transverse forces acting radially on the pivotable part would have to be very large in order to cause a certain tilting to be able to.

The support ring according to the invention is not only important but it fulfills a support function when one of its or both end faces meets the flow cross-section of the water is or are facing, at the same time a sealing function. The support ring according to the invention has a one-piece material fit molded sealing area. This sealing area is

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consists of two annular sealing strips diverging away from the support area and forming a groove open at the end between them In the installed state, these sealing strips are brought closer to one another and lay against their spring return force hereby frictionally sealing on the one hand on the inner circumferential surface of the outer part and on the other hand on the inner surface of the inner part-side annular receiving groove. The annular about lip-like sealing strips of the support ring according to the invention allow through their non-positive resilient System with low, wear-favorable friction, a pliable, permanent sealing area. The annular According to the invention, sealing strips are brought together in a compact part, the support area of the support ring, which also has a relatively small wall thickness, but at the same time a relatively large axial width for Has securing an optimal sliding and support function.

The features of the main claim preferably have a uniform function in the context of a special combination to solve the problem according to the invention together. This combination can also be preferred and optional Features of the subclaims are added.

The invention is particularly advantageous in the case of an outlet whose outlet pipe consists of a hydraulically deformable one Material such as brass. For the hydraulic reshaping of such a known outlet pipe this has two sealing end areas not subject to forming, which are sawn off after the blank has been formed. That the The inner part accommodating the O-rings consists of a brass precision turned part already mentioned above. The invention treads a new path here by adding an undeformed

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Sealing end area is used as an inner part, its Flat annular grooves by cold forming, in particular by rolling or forging, into the thin wall of the Inside are incorporated.

Further features of the invention are the subclaims, refer to the description of the drawings and the drawings.

In the drawings, the invention is shown in more detail using preferred exemplary embodiments, e, s show

Fig. 1 is a more schematic view of a so-called swivel spout forming an approximately more natural outlet Size,

2 shows a partial longitudinal section along the section line II-II, shown on an enlarged scale of approximately 4: 1 in Fig. 1,

3 shows a sectional view on an enlarged scale of approximately 4: 1 of an entropy-elastic support ring, which at the same time performs a sealing function,

Fig. 4 shows a combined support and pressure ring and

5 shows a partial longitudinal section through a so-called kitchen spout, in which the one provided with seals The inner part is arranged in a spatially fixed manner, while the sleeve-shaped one surrounding the inner part and at the same time carrying the outlet pipe Outer part · is pivotable coaxially to the inner part.

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In FIG. 1, a swivel spout is designated as a whole by the reference number 10. The outlet 10 has an outlet pipe 11, the free end of which is a water outlet opening 12 and the the other inner end forms a drawn-in, approximately collar-shaped inner part that can be seen in FIG is designated.

The inner part 13 is in an approximately sleeve-shaped outer part 14 added. The circular cylindrical inner surface 15 of the outer part 14 has play s on all sides with respect to the essentially circular-cylindrical outer jacket surface 16 of the inner part 13 distanced.

The play s is compensated for by a support ring 17 having a flat rectangular cross section. The support r ring 17 consists of a relatively hard set entropy-elastic material, in particular a suitable one Plastic. Such a plastic can, for example, be a thermoplastically processable rubber-elastic polyurethane (abbreviated name: TPU), which has a Shore hardness A of about 75-98.

At its end face adjacent to the flow cross section Q of the water, the support ring 17 also forms a seal. This seal is in one piece and cohesively a total of a plastic injection molded support ring forming 17 molded. This seal or this sealing area 18 consists of two V-groove open at the end between them 19 having, approximately radially self-resiliently spread apart, annular approximately lip-like sealing strips 20, 21.

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From Fig. 3 it can be clearly seen that the sealing strips 20, 21 in the relaxed state of the support ring 17 in widely spread distance from each other.

In the installed state according to FIG. 2, the sealing strips 20, 21 are already pressed relatively tightly against one another and in this way cause the support ring both with respect to the inner circumferential surface 15 and with respect to the inner surface 17 receiving groove 24 a permanent, low-friction and force-fit seal.

The support ring 17 therefore has a double function: its support area 22 with its outwardly pointing circular cylindrical Outer jacket support surface 23 ensures tilt-proof sliding support of the inner part 13 within of the outer part 14. The sealing area 18 described above, on the other hand, seals the free annular space between the inner part 13 and the outer part 14 to the outside.

From Fig. 2 it can be clearly seen that the axial width b of the support ring 17 is a substantial proportion (more than one third) of the total axial length 1 of the inner part 13 taken up by the outer part 14.

It remains to be mentioned that the support ring 17 forms a total of a thin-walled component, while the receiving groove 24 is relatively flat and therefore to be produced with a low degree of deformation.

It would be easily possible at an axial distance of the receiving groove 24 to provide a further receiving groove 24 with an additional support ring 17. In the present case

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According to FIG. 2, however, the arrangement is "made so that one with an axially or obliquely to the surface line extending slot 25 provided combined support and pressure ring 28 with an axial collar-shaped support extension 26 ensures additional radial support between inner part 13 and 14 .. A flange attachment which is integral with the support attachment 26 and which is integral with one another 27 of the combined support and pressure ring 28 is between the outer part-side end face 29 and a contact shoulder 30 a union nut 32 screwed to the outer part 14 at 31.

The support and pressure ring 28 has approximately the cross-sectional shape of a T lying on the side and accordingly has in an approximately mirror-symmetrical arrangement to the support extension 26, a collar-shaped extension 33 pointing away from the latter.

The combined support and pressure ring 28 is held in a snap-locking manner in a receiving groove 34.

The outlet pipe 11 forms a hydraulically formed workpiece, with the inner part 14 forming one Seal end area and was therefore not subject to hydraulic deformation.

The axis of rotation about which the inner part 13 rotates coaxially about the spatially fixed outer part 14 is denoted by y (Fig. 2). This axis of rotation y is also entered in FIG. 5.

In the embodiment according to FIG. 5, the inner part 13 a is shown very schematically. Such a fixed space In such kitchen spouts, the inner part 13 a is regularly provided with a Kinhand shut-off device, which is shown in FIG. 5 was not shown to simplify the drawing.

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According to FIG. 5, only one in a radially outwardly open water-conducting annular groove 35 is in the inner part 13 a angled water inlet 36 is provided. From the ring groove 35, the water can pass through an opening 37 into the only partially shown outlet pipe 11 a.

In connection with FIG. 5, which otherwise uses analogous designations from FIG. 2, it should be mentioned in particular that that the two support rings 17 with sealing areas 18 facing each other and the water-conducting cross section 35 are provided.

In addition, it remains to be mentioned that the combined support and pressure ring 28 as a plastic injection molded part, and although it can be made from the material of the support ring 17.

It also remains to be added that the outer diameter D of the relaxed support ring 17 (Fig. 3) compared to the clear Width W of the outer part 14, 14 a may have a slight oversize. Here, the outer inlet radius R (see Fig. 2) the inner circumferential surface 15 during assembly a relatively smooth axial insertion of the with the support ring 17 provided inner part 13, 13a. As can be seen from FIG. 2, the thin-walled support ring 17 can be v / egen the front side Slightly push on inner part 13 provided with an outer radius r with temporary expansion and so into the very shallow groove 24 bring in.

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Claims (6)

Dipi.-ing. Harald Ostriga Dipi.-ing. Bernd Sonnet Wuppertal-Barmen Stresemannstraik 6-8 Admitted to the European Patent Office Patent attorneys Osuiga & Sonnet. Postl'ach 2013 27. D-56OO Wuppertal 2 Applicant: H.D, Eichelberg + Co GmbH Metallwerke Balver Street 92 5750 Menden 1 description of Invention: outlet for sanitary components, such as for Hand basins and sinks, bathtubs or the like Expectations lJ outlet for sanitary components, such as hand basins and sinks, Bathtubs or the like., With a substantially circular cylindrical sleeve-shaped water-conducting outer part and with a substantially circular cylindrical one plugging into the latter collar-shaped water-bearing inner part, alternatively the outer or inner part of the fixed water inlet or the pivotable outlet pipe are assigned, the outer and inner parts each consisting of a substantially rigid one hard material, in particular made of metal such as brass, and are arranged so that they can rotate relative to one another and wherein the inner part on its outer circumferential surface has at least one entropy-elastic ring-shaped seal held in an annular groove each and at least one extending over an axial one Partial area extending, resting with a close sliding fit on the circular cylindrical inner jacket surface of the outer part Support surface in the form of a circular cylindrical outer jacket surface Postal checking account Credit- u. Volksbank cGmhll CiHtimer / haiik AG. <ΤΛ (0202) Eat Wuppertal-Barmen. Wuppertal -llnrnivn. JSk 557040 (BLZ 36010043) 44504-431 (BLZ 33060008) 15824 (Hl Z .13040001) 4. (1.1-4 «2.1 η.D. Eicheiberg + .co: Metal works - 2 - characterized in that the inner part (13, 13a) consisting of essentially rigid hard material is accommodated with large play (S) on all sides in the outer part (14, 14a), so that each support surface (23) of the inner part (13, 13a) is formed by a support ring (17), which is received in an annular groove (24) and has a flat rectangular cross-section, made of relatively hard-adjusted entropy-elastic material, which at its end face adjacent to the flow cross-section (Q; 35) of the water also acts as a seal with a one-piece, cohesively molded sealing area (18) which consists of two annular sealing strips (20, 21) which have a groove (19) open at the end and are radially self-resiliently spread apart. 2. Spout according to claim 1, characterized in that the cross section of the annular groove (24) is designed to be elongated rectangular in adaptation to the cross-sectional shape of the support ring (17). 3. Spout according to claim 1 or claim 2, characterized in that the support ring (17) is a plastic injection molded part and consists of a plastic with a Shore hardness A greater than 50. 4. outlet according to claim 3, characterized in that. the Shore hardness A is approximately approximately 60-90, preferably approximately 70-80. 5. Spout according to one of claims 1 to 4, characterized in that the diameter (D) of the region of the support ring (17) forming the support surface (23) has a slight oversize compared to the clear width (W) of the outer part (14, 14a) . HD Eichelberg +.: $ P * .Q mbH .. ".: .." .. ** .. "qq η C Ί QQ Mafal luori / α O O U D / O O Metal works - 3 - 6. Spout according to one of claims 1 to 5, with an outlet pipe made of hydraulically deformable material such as brass, the blank of which has two sealing end regions not subject to hydraulic deformation, characterized in that one sealing end region is the inner part (13) forms whose flat annular grooves (24, 34) are incorporated by cold forming, in particular by rolling or forging.