DE8810162U1 - Grooved pipe end cap, preferably made of chemical materials - Google Patents

Description

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Dipl.-lng. Siegfried Schirmer -feieton(O62i)2

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966/123-1

Applicant:

Clauss-Markisen GmbH & Co Bissinger Straße b 7311 Bissingen-Ochsenwang

Grooved pipe end cap, preferably made of chemical materials

The invention relates to a grooved tube end cap, preferably made of chemical materials, with a central recess for receiving and guiding a bearing bolt, especially for awnings and roller shutters. 5

With the known grooved tube end caps, it is unavoidable that after a certain period of time, the rotation of the bearing bolt causes squeaking noises that are perceived as unpleasant. These squeaking noises are caused by the friction between the bearing bolts made of steel and the bearing bolt holders made of chemical material.

The invention is based on the object of designing a grooved tube end cap of the type shown in such a way that even after a long period of operation no annoying squeaking noises occur.

This object is achieved according to the invention in that a cylinder sliding bushing is inserted and secured in the central recess of the grooved tube end cap, whereby the cylinder sliding bushing is made of a sliding material. Advantageously, the cylinder sliding bushing is made of sintered bronze impregnated with 81.

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In an embodiment of the invention, the central recess on the front side is provided with a circumferential inner stop, the diameter of which is larger than the inner diameter of the cylinder bush. In a preferred embodiment, the inserted cylinder sliding bush rests against the inner stop and is fixed in the functional position by a locking means, whereby the locking means can be formed by a toothed disk.

It is in the nature of the invention that the cylinder bushing and the toothed disk are firmly enclosed by the chemical material of the grooved tube end cap or partially embedded in the chemical material. This enclosing or embedding is achieved by inserting the cylinder sliding bushing and the toothed disk into the still warm grooved tube end cap and the chemical material shrinking as it cools.

Thanks to the inventive design of the grooved tube end cap, there are no squeaking noises in the bearing points even after a long period of operation. The cylinder sliding bush used has self-lubricating properties, which guarantees quiet operation and freedom from maintenance.

An embodiment of the invention is shown in the drawing and is explained in more detail below.

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Fig. 1 a vertical section through a grooved pipe end cap with inserted cylinder sliding bushing and inserted toothed disk and

Fig 2 a view of a toothed disc.

A cylinder sliding bush 3 made of sintered bronze soaked in oil is inserted into the central recess 2 of a grooved tube end cap 1. On the other hand, the central recess 2 has a circumferential inner stop 4, the diameter D of which is larger than the inner diameter d of the cylinder sliding bush 3. The cylinder sliding bush 3 rests against the inner stop 4 and is held in this position by a

Toothed washer 5 secured.

The cylinder sliding bush 3 and the toothed disk 5 are inserted into the still warm grooved pipe end cap 1. By shrinking the chemical material when it cools, the teeth of the toothed disk 5 anchor themselves in the grooved pipe end cap 1. In addition, the shrinking of the chemical material provides additional security for the lubrication of the grooved pipe end cap 1.

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List of reference symbols: I,' 1 grooved pipe end cap

f. 2 central recess in 1

i 3 cylinder sliding bush

I 4 inner stop in 2

5 Toothed washer

D diameter of 4

d diameter of 3

Claims (9)

Patent Attorney.·..' *..·%.* *,,",.* OsrongstraBeio Dipl.-Ing. Siegfried Schirmer SeronWäiJioss Authorized representative . Fax (05 21) 210 54 formerly the European Patent Office 05.08.1988 966/123-1 Applicant: Clauss-Markisen GmbH & Co Bissinger Strasse 6 Bissingen-Ochsenwang Protective speech: 1. Grooved tube end cap, preferably made of chemical materials, with a central recess for receiving and guiding a bearing bolt, in particular for awnings and roller shutters, characterized in that a cylinder sliding bush (3) is inserted and secured in the recess (2). 2. Grooved pipe end cap according to claim 1, characterized in that the cylinder sliding bush (3) consists of a sliding material is formed. 3. Grooved pipe end cap according to claim 1 or 2, characterized in that the cylinder sliding bush (3) is made of sintered bronze soaked in oil. 4. Grooved pipe end cap according to one of claims 1 to 3, characterized in that the central recess (2) is provided on the front side with a circumferential inner stop (4). 5. Grooved pipe end cap according to one of claims 1 to 4, characterized in that the diameter (D) of the inner stop (4) is larger than the inner diameter (d) of the cylinder sliding bush (3). - 2 - 966/123-1 6. Grooved pipe end cap according to one of claims 1 to 5, characterized in that the inserted cylinder sliding bush (3) rests against the inner stop (4). 7. Grooved pipe end cap according to one of claims 1 to 6, characterized in that the inserted cylinder sliding bush (3) is fixed in the functional position by a securing means. 8. Grooved pipe end cap according to claim 7, characterized in that the securing means is formed by a toothed disk (5). 9. Grooved pipe end cap according to one of claims 1 to 8, characterized in that the cylinder sliding bush (3) and the toothed disk (5) are firmly enclosed by the chemical material of the grooved pipe end cap (1) or are partially embedded in the chemical material. &bull; Description -