DE2948474A1 - SWIVEL BEARING FOR SANITARY FITTINGS SPOUT ARM - Google Patents

Description

Friedrich Grohe Armaturenfabrik GmbH & Co.

GRP - 418

Pivot bearing for sanitary fittings outlet arm

The invention relates to a device with the preamble of claim 1 specified features. Sanitary fittings with a swiveling outlet arm are for example for double sinks, in order to supply both basins with fresh water from a tap, or else in the case of washbasins, in order to increase the freedom of movement for the user through the optionally pivotable outlet arm. There are pivotable outlet arms known in which a cylindrical pin rotatably held in a bore of the tap fitting.

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tert 1st (DE-GM 17 78 867). In order to ensure the pivotability over a long period of use, it is necessary to provide the pin with a relatively large amount of play, e.g. to prevent harmful mineral excretions from the water, to store in the fitting. However, this will result in the The outlet arm is poorly guided, i.e. the outlet arm "rattles" or wobbles on the sanitary fitting. Also wears out due to the inadequate storage of the sealant assigned O-ring early. To remedy these disadvantages / is * auöh It has already been suggested to place two O-rings side by side on the Provide pin. The sealing rings, which are round in cross-section and made of flexible material, are too flexible and can does not guarantee precise and long-lasting guidance of the outlet spigot in the fitting.

The invention is therefore based on the object of creating a low-wear, almost play-free rotary bearing of the outlet arm using simple means.

This object is achieved according to the invention by the in the characterizing Part of claim 1 specified features solved. Further features of the invention are specified in claims 2-5.

The advantages achieved by the invention are in particular that by assigning the separate bearing bushes, preferably made of plastic, since plastic, in addition to good sliding properties, is also particularly insensitive to mineral excretions from the water, the large play of the mounting of the outlet arm that was previously required can be reduced to a minimum. The bearing bushes can advantageously be manufactured from plastic by injection molding. In addition, the exact pivot bearing now reduces the wear of the O-ring to a minimum and the tightness remains guaranteed over a long period of use. A second O-ring is no longer required.

An execution example of the invention is shown in the drawing

130023/0425

and is explained in more detail below. It shows

Figure 1 a sanitary tap fitting with pivotable
Outlet arm, shown partially in section;

FIG. 2 shows a bearing bush in plan view and in side section in an enlarged illustration according to FIG the section plane II of FIG. 1.

In the figure 1 is a sanitary fitting 1 for washbasins, etc.
shown. In the outlet area of the sanitary fitting 1 is a
Solder socket 40 arranged with a receiving hole 4. In the
Receiving bore 4 is an outlet arm 2 carrying an outlet mouthpiece 3 with a pin 5 so as to be pivotable. For axial securing, there is a sufficiently deep annular groove 51 of the pin

5 a spring snap ring 42. The outside diameter of the spring snap ring is slightly larger in the relaxed state than the diameter of the receiving bore 4 of the soldering socket 40. When pushed in
of the pin 5, the spring circlip 42 is first pressed together resiliently by the receiving bore 4 in order to then latch into an annular groove 41 as an axial locking device.

The pivot bearing of the pin 5 in the receiving bore 4 of the sanitary fitting 1 is carried out by two spaced apart in grooves 7 on the pin 5, made of good sliding, wear-resistant Plastic-made bearing bushes 6. As can be seen in particular from FIG. 2, there is the bearing bush

6 from a piece of pipe, which for easy slipping on with a
continuous axial slot 9 is provided. The pipe section is formed by a cylindrical jacket 11 which is attached to the
an end region is designed to be enlarged in diameter. in the
The extended area is the jacket 11 next to the axial slot 9
through a multiplicity of longitudinal slots 10 in spring segments 8
divided. The inner diameter 12 of the bearing bush 6 is chosen so that it encloses the base of the groove 7 tightly. The outer diameter 13 of the spring segments 8 is dimensioned such that they are pretensioned against the wall of the receiving bore 4

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prop up.

The assembly of the outlet arm can be done in such a way that first the spring snap ring 42 is slipped onto the pin 5, then the two bearing bushes 6 and an O-ring 15 provided for sealing. Now the pin 5 can be inserted into the receiving bore 4 and lowered until the spring snap ring 42 snaps into place. The spring segments 8 of the bearing bush 6 adapt elastically to the actual diameter of the receiving bore 4 in the sanitary fitting 1 and bridge them so is the otherwise necessary bearing clearance. The outlet arm 2 is then ready for operation. When dismantling or pulling out the The outlet arm 2 requires a force to be applied in accordance with the design of the spring snap ring 42.

Of course, grooves for receiving the bearing bushes can also be provided in the soldering bush 40. Here would then have to the spring segments protrude into the mounting hole 4. These Training is particularly advantageous for outlet arms made of thin-walled pipe.

When dimensioning the length of the bearing bush 6, it has been shown to be advantageous if approximately one third of the total length is formed as firmly fitting in the base of a groove and two thirds of the Total length for the spring segments 8 is used.

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Claims (5)

Friedrich Grohe Armaturenfabrik GmbH & Co. GRP - 418 EXPECTATIONS Rotary mounting of a pivotable outlet arm on sanitary fittings, the outlet arm being held in a receiving bore by the assignment of a cylindrical pin, characterized in that two spaced-apart bearing bushes (6) are provided in the area of the pin (5), each of which has one the first part rests firmly against a rotating part and a second part is formed spread apart to form spring segments (H) and the spring segments (8) are braced against the other rotating part. 130023 / 0A28 ORIGINAL 2. Pivot bearing according to claim 1, characterized in that the first part about one third and the second part about two thirds of the total length of the bearing bush (6). 3. pivot bearing according to claims 1 and 2, characterized in that that the bearing bushes (6) are held firmly in grooves (7) on the pin (5) and the spring segments (8) rest on the wall of the mounting hole (4). 4. pivot bearing according to claims 1 to 3, characterized in that that the bearing bushes (6) each have a continuous axial slot (9) and are made of elastic, good Made of slippery and wear-resistant plastic material are. 5. pivot bearing according to claims 1 to 4, characterized in that that the bearing bush (6) is designed as a slotted pipe section and the cylindrical jacket (11) on the an end area is enlarged in diameter, whereby in the enlarged area for subdivision into spring segments (8) Longitudinal slots (10) are provided. 130023/0 ^ 25