DE858341C - Roller bearing arrangement, especially for tie rods for sewing machines - Google Patents

Description

Rolling bearing arrangement, in particular for tie rods for sewing machines The invention relates to a roller bearing arrangement, which is used in particular to support the tie rod heads is intended for sewing machines, but can be used wherever a Part supported on a journal via roller bearings has limited mobility must be perpendicular to the journal diameter.

It is already 1) ch-annt, the tie rod heads on their bearing journals to be stored using self-aligning ball bearings. It has been shown from-er that the resulting great mobility of the tie rod head perpendicular to the bearing pin leads to difficulties if, for example, both ends of the tie rod over such Bearing heads and journals are stored. Rather, what is desired is limited mobility of the tie rod heads in connection with a sufficient restoring force for the Alignment of the drawbar perpendicular to the bearing pin. The invention aims that Forming a bearing arrangement that has these properties.

The bearing arrangement according to the invention consists of two roller bearings with a common inner bearing ring, a rubber ring and a metal ring, the rubber ring being pressed onto the metal ring and the inner bearing ring on the rubber ring so that the rubber ring encompasses the end faces of the bearing ring, the metal ring Forms abutment for the end faces of the rubber ring. The metal ring is used to hold the journal. The common inner bearing ring simultaneously forms radial and axial guide surfaces for the two rows of balls of the roller bearing, the axial guide surfaces advantageously being formed by upsetting the bearing ring. The rubber ring allows loading bordered oscillating motions of the bearing assembly perpendicular to the bearing diameter, in which a row of balls is radially-en and the other Ktigclrcilie receives the axial bearing pressure and at the same time ensured by the rubber ring sufficient Rückstc11kraft.

The invention and further features of the invention are described below with reference to an exemplary embodiment shown in the drawing. In the drawing, FIG. 1 shows a longitudinal section through a bearing arrangement according to the invention for the rod head for a sewing machine and FIG. 2 shows a side view of the arrangement according to FIG.

The bearing arrangement consists of two ball bearings whose rows of balls are denoted by i and: 2. An outer bearing ring 3 or 4, which is designed as a half-shoulder bearing ring, belongs to each ball bearing. Both rings are held together by a sheet metal capsule 5 , which is flanged over these rings.

The inner common bearing ring 6 is compressed in the middle; the side surfaces of the upset part 7 form the axial guide surfaces for the Ktigellagerreili-en i and: 2. The bearing ring 6 sits on a rubber ring 8 and this in turn on a sheet metal ring, the end faces io of the bearing ring 6 guided axially through the rubber ring 8 and its end faces held by pressure clips, around which the sheet metal ring 9 with its ends 12 hertim is flanged.

The sheet metal ring 9, which can consist of a tube or an open sheet metal jacket, is used to hold the bearing pin 13, between the collar 14 and lutter 15 of which the tie rod head 16 receiving the bearing crane arrangement is fastened. This head consists of a pressed part with a round bore 17 for receiving the capsule 5, a one-sided flange ig as an abutment for this capsule containing the bearing arrangement and with an E, indrückung ig, which allows a subsequent flanging of the edge 2o after the insertion of the Lagei s granted. The lag eranordnung once ÜR f without any union so simple and cheap, and rabbit lierstellbar be further secured without these means only by Umbärdeln of the rim 20 in Zugstanglenkopf sixteenth

The tie rod head has a bolirting 21 for receiving the 7ugstaiigie designated by 22. In order to ensure a firm fit of the l ') lvcliliiilsc 9 on the bearing journal 13 , 1,: (*) iiiieli the gcstricli-elt breakthroughs 2,3 attached smciii in the sheet metal sleeve. In the case of, #, tifprcsseii (Ics inner bearing ring 0 on the rubber ring 9 this swells through the openings and thus results in a firm support cl, 2s sheet metal ring s 9 on d-crn 7aPfen 13.

Claims (2)

PAT ENTA NSP P # t ' C 11 E 1. Bearing arrangement consisting of two roller bearings with a common inner bearing ring, in particular for storage, (Icr zu "lstangcnlonnen -on sewing machines, characterized in that the inner bearing ring (6) on a rubber ring (8) and this is mounted on eirwin metal ring (9) , the rubber ring abutment for the end faces (io) of the bearing ring (6) and the nile metal ring (9) forming those for the rubber ring. 2. Rolling bearing arrangement according to claim i, characterized in that the radial and axial guide surfaces for lkldü bearing rows having. inner bearing ring (0) is compressed in its -. \ litte (7). 3. Rolling bearing arrangement according to claim 1, da-21 marked by the fact that the two outer bearing rings (3, 4) designed as flalbschulterla.-erungen and by a ül), he are both flanged Äletallkapsel (5) . 4. Wälzlageranordnun, - according to claim i, characterized in that the rubber ring receiving '- \ 1, ctallrii) 1 " (9) is umg, ebördclt at the ends and z #, vischen the tinigcb, # rdelteii ends ( 12) and your GuinmirIng, (8) Drucksclieibcn (ii) are arranged 5. Rolling bearing arrangement according to claim i, characterized in that (let the rubber ring (8) receiving -, metal ring (9) openings (23) for the passage of parts 6. Tie rod head with a bearing arrangement according to claim 1, characterized in that the tie rod head consisting of an attachment (16) has a bearing (17) for receiving the sheet metal capsule (5) with the bearing arrangement, a flange ( 18) as a first and cincii flanged edge (20) as a two (, ltcs axial abutment for the sheet metal capsule