DE2641603A1 - Metal journal for wood roller shutter shafts - has sharp ended tube driven into wood leaving stub shaft bearing seat - Google Patents

Abstract

A metal journal for the rolling friction bearings on a roller shutter with a wooden shaft is made of a tube with sharp edges at one end which is driven axially into the centre of the shaft. The part which penetrates into the wood can be circular, oval, square, triangular in section or ribbed. The circular journal end is separated from the embedded end by an upset collar in the tube wall or by a step from a larger dia. to the smaller dia. of the bearing seat. This creates an inexpensive journal and prevents splaying of the wooden shaft ends.

Description

Bearing journals for wooden shafts.

The invention relates to a bearing pin made of metal for hammering in in the wooden shaft ends, for example: roller shutter shafts.

Wooden shafts require a pair of metal bearing journals for storage, to ensure durability and precise concentricity.

Hot-forged bearing journals in solid design are known. It was always necessary to drive in or press in these massive bearing journals a pre-drilling of the wooden shaft. Nevertheless, the end of the wooden shaft was not fanned out to avoid and the absolutely firm hold was no longer given. Also additional Metal end caps around the wooden shaft end could not prevent this. The massive Forged journals are also costly and imprecise in nature.

To create a lightweight, precise and inexpensive journal, which has a tight fit and prevents the wooden shaft end from splicing open, relates to the following invention.

A hollow bearing journal, like a tube, serves the purpose excellent and eliminates the splicing of the wooden shaft end thanks to its small size massive cross-section. In addition, the metal end caps are removed as well pre-drilling in the head ends of the wooden shaft. That to be covered in the wooden shaft end Part of the bearing journal can also have a wide variety of cross-sections Prevent twisting in the wood (see drawing, section A - B).

This part of the hollow journal can be at the ends, from the outside to Inside and vice versa, as well as both, beveled in equal parts of the wall be. The resulting point cuts the wood, which -it is easy to hammer means. On the other hand, this results in a firm hold, since the wood is firm on the inner and outer wall.

The other part of the bearing journal (see softening, section C-D) is used the inclusion of a bearing, preferably a roller or ball bearing. A bead which can also be upset or crimped, serves as a lateral support for the Camp.

Also a tube with a larger diameter, reduced down to a bearing seat results in the bearing seat with lateral support.

Claims (5)

Metal bearing journals for wooden shafts, characterized in that that the metal bearing journal is hollow, similar to a tube and a small solid one Has cross section. 2. Metal bearing pin according to claim 1, characterized in that the part of the bearing journal to be driven into the wooden shaft in a wide variety of ways Cross-sections such as round, oval, angular, with an edge, with a flat, with a nose ~ etc. designed can be. 3. Metal bearing pin according to claim 1 and 2, characterized in that that the wall of the part of the bearing pin to be driven into the Hclzwelle the end, optionally from the outside to the inside, as well as from the inside to the outside, or can also be beveled in equal parts. 4. Metal bearing pin according to claim 1, 2 and 3, characterized in that that the hollow bearing pin, the free end of which has a bearing seat, a bead is upset, or crimped, which gives the bearing a lateral support. 5. Metal bearing pin according to claim 1, 2 and 3, characterized in that that the bearing seat is reduced down from a larger diameter and thereby at the same time there is a lateral hold for the camp.