DE7414644U - ball-bearing - Google Patents

Description

SKP KUQELLAGERFABRIKEN GMPh. 'Schweinfurt, 2y. H

TP / Fei / He

ball-bearing

The innovation concerns a ball bearing with inlaid in thin-walled bearing rings Raceway wires and elastic padding arranged in the bore of the inner ring or on the jacket of the outer ring.

The innovation is based on the task of a ball bearing of the type mentioned above To create a way in which the raceway wires inserted into the respective bearing ring are kept axially at a distance and in which the elastic cushions thanks to a simple and safe assembly with the respective Bearing ring can be connected. In addition, it must be economical to manufacture be.

According to the innovation, this task is performed in a ball bearing with thin walls Bearing rings inserted raceway wires solved in that the elastic pad is distributed on the circumference is provided with radially protruding elevations, which engage in corresponding recesses in the bearing rings and which keep the track wires inserted in the respective bearing ring axially at a distance. It is advantageous when using those provided with an elastic pad "■■ \ gel bearings as steering column bearings that they are used during the operation of the Motor vehicle shocks occurring in the axial as well as in the radial direction already absorb through the elastic pad and do not transfer it to the bearing itself. The elastic upholstery has a multiple here in the innovation item To meet puncture. So it serves the above-mentioned interception of the Shock loads, on the other hand, the elevations integrally connected to it, which penetrate corresponding recesses in a thin-walled bearing ring, to the bracket, d. H. to prevent wandering and axial displacement as well as used for the safe assembly of the elastic pad. Finally fix-

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SKP KUGELIAGERFABRIKEN OMBH '■'''^; '"' · '' · * '·' Sheet - 2 -

ren the elevations the raceway wires in the axial direction.

In an advantageous embodiment of the innovation are those in the thin-walled Recesses located in the bearing ring for receiving the corresponding elevations of the pad are square or rectangular. Is beneficial It is also according to the innovation if the end surfaces of the elevations are arched or designed in such a way that the row of balls rolling on the raceway wires is not disturbed. In a further advantageous embodiment of the innovation is integral with the elastic pad one extending in the radial direction Sealing washer formed, which runs sealingly against the shoulder of the opposite bearing ring with its sealing lip. This is particularly advantageous when the elastic cushion made of soft plastic, e.g. B. rubber is made. Another feature of the innovation is that the elastic pad has axial recesses in the bore surface or on the lateral surface, which are closed at both ends by narrow ring webs. By this measure are when pressed, z. B. on a steering column, bridged diameter tolerances so that a secure hold is still guaranteed.

In the drawing, embodiments of the innovation are shown, which in are described in more detail below.

Here show:

Figure 1 shows a cross section through a ball bearing according to the invention an elastic pad attached to the inner ring by means of a snap connection and

Figure 2 shows another embodiment of a ball bearing with one-sided Sealing of the bearing.

1 shows a ball bearing 1 comprising an inner thin-walled bearing ring 2 and an outer thin-walled bearing ring 5 · I ⁿ the bearing rings 2 and 3 are preferably made of spring wire made open or closed raceway wires 4 and 5 can be engaged with a circular cross section, because the tracks for which -

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SKF KUOELLAOERFABRIKEN ONBH Sheet -

Up rolling balls 6 form. One end 7 of the inner ring 2 and one end

6 of the outer ring 3 are angled so that only a small one between the two Gap remains. Located in the bore of the inner thin-walled bearing ring 2 An elastic pad 9 made of rubber or the like. It has axially extending recesses 10 on its bore surface. The axial recesses 10 of the elastic pad 9 are at both ends by narrow radially Ring webs 11 and 12 completed. As a result, a narrow ring-shaped area is created at both ends, which detaches the steering column or the like and effectively prevents the ingress of dirt. Both ends I ^ and 14 of the outer surface of the elastic pad 9 lie on the bends

7 and 15 of the inner ring 2. In the cylindrical section 16 of the inner ring 2 there are several recesses 17 distributed around the circumference, which are connected by don with the elastic pad 9 one-piece elevations 18 are penetrated. The end faces 19 of the elevations l8 are arched in the exemplary embodiment. The elevations 18 ensure that once the elastic pad 9 is on securely the cylindrical section 16 of the inner ring 2 axially and in the circumferential direction is fixed. On the other hand, the elevations 18 protrude into the interior of the ball bearing 1 into the area of the arranged raceway wires 4, so that according to the innovation the two raceway wires 4 of the inner ring 2 are held at a distance from one another by the elevations 18.

The assembly of the ball bearing 1 can advantageously take place in the manner that first the two raceway wires 4 are brought into their positions in the thin-walled inner ring 2. A prefabricated elastic pad 9 is now inserted into the bore of the inner ring 2, wherein the raised portions 18 connected to it snap into the recesses I7 of the inner ring 2, they penetrate and thus keep the track wires 4 axially at a distance. The elastic pad 9 is by means of the elevations 18 in the bore of the inner ring 2 secured against rotation. In the following steps, the outer ring 5 »d. H. at first it is only at one end

8 angled, pushed on with an inserted track wire 5, the balls 6 filled in, the second track wire 5 pushed in and in the last step the end 20 of the outer ring 3 is angled by flanging or the like.

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SKP KUGELLAGERPABRIKEN GMBH

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Figure 2 shows a modified embodiment of a ball bearing with elastic pad. The ball bearing 1 corresponds to that shown in FIG. The elastic pad is also largely designed as described in Figure 1, however, it is here in one piece with a sealing plate 22 extending in the radial direction, which is connected to the sealing lip 2} on the cylindrical shoulder surface 24 of the outer ring 3 runs sealingly. Through this the ball bearing 1 is sealed on one side and the ingress of dust, liquid or the like is effectively prevented.

The assembly of this bearing can advantageously take place in such a way that the ball bearing 1 is completely completed first. The separately manufactured elastic pad 21 is then pushed into the bore of the inner ring 2, the elevations 18 snap into the recesses YJ and the sealing washer 22, which is integrally formed with it, comes to rest with its diaphragm lip on the shoulder surface 24 of the outer ring.

The innovation is of course not limited to the ones shown and described Limited examples. There are no further constructive changes possible, which are within the scope of the idea of innovation. For example, the axial recesses 10 in the bore surface of the elastic pad 9 and 21 be designed as continuous recesses or they can also be with a narrow, radially extending annular web 11 or are closed at one end.

The elastic pad 9 or 21 can also be on the outer surface of the outer ring 3 can be arranged. In addition, it is also possible to use both rings, i. H. Inner ring 2 and outer ring 3 of a ball bearing 1 to be provided with an elastic cushion.

Claims (6)

1. Ball bearings with raceway wires inserted in thin-walled bearing rings and in the bore of the inner ring or on the jacket of the outer ring arranged elastic pad, characterized in that the elastic Pad (9, 21) distributed on the circumference is provided with radially projecting elevations (18) which are inserted into corresponding recesses (17) of the Engage the bearing rings (2) and hold the raceway wires (4) inserted in the respective bearing ring (2) axially at a distance. 2. Ball bearing according to claim 1, characterized in that in the thin-walled The recesses (17) located in the bearing ring (2) are square or rectangular. 2. Ball bearings naoh Anspruoh 1 or 2, characterized in that the end faces (19) of the elevations (18) are arched. 4. Ball bearings naoh one of the preceding claims, characterized., that in one piece with the elastic pad (9, 21) one in the radial direction extending sealing washer (22) is formed, which with its service lip (23) sealing on the shoulder (24) of the opposite bearing ring (JS) starts up. 5. Ball bearing according to one of the preceding claims, characterized in that that the elastic pad (9, 21) made of soft plastic, for. B. rubber produced is. 6. Ball bearing naoh one of the preceding claims, characterized in that that the elastic pad (9, 21) in the bore surface or on the lateral surface has axial recesses (10) which are preferably closed at both ends by narrow annular webs (11, 12).