DE8400958U1 - Radial spherical plain bearings - Google Patents

Description

SKF KUGELLAGERFABRIKEN GMBH Schweinfürt, January 10, 1984

DE 84 001 DE TPA / bla.tr

Rad I ₁ äl -Ge 1 enkl ager

The present innovation concerns a radial spherical plain bearing, that consists of an outer ring or the like and an inner ring or ball head arranged in a spherical bore consists in which the outer ring or the like, starting from an end face, with a circumferential, axially directed Recess and is provided with projections on the jacket in the region of the recess.

Such spherical bearings are known for example from DE-AS 25 25 836. With these well-known Spherical bearings are in the rotating, axially directed Recesses of the outer ring resilient crate provided, when inserting the bearing into a housing bore

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are deformed and parts of the outer ring radially iriA press. This ensures that the bore surface of the outer ring is pretensioned on the surface of the ball stud is in contact «Due to the production-related However, tolerances are not possible with this known construction! to achieve a certain game or a certain preload between the bearing parts.

Furthermore, from DE-GM 1 936 279 a clearance-free employed spherical bearing is known in which in the bore of the outer ring an eccentrically arranged annular groove is provided so that on one side of the outer ring a thin-walled ι ring-shaped circumferential elastic leg is formed, which is calibrated when the Deformed inner ring in the bore of the outer ring and the bearing adjusts without play.

In these known constructions, the inner ring or the ball head can be pushed out of the bore of the outer ring when there is a high axial load.

The present innovation is based on the task to create an efficiently manufactured spherical plain bearing in which a certain play or a certain preload is achieved between the bearing parts and the Inner ring or ball head is not pushed out of the bore of the outer ring or the like when the bearing is installed can be.

This task is solved according to the innovation in a joint bearing of the type mentioned in that the Outer ring on the side provided with the circumferential recess with axially directed, radially continuous Slits are provided which divide the outer and inner elastic tongues, and that at least one of the radial superimposed tongue Yi on the facing

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Provide surfaces with one or more ribs or the like is, the ribs separated by a gap from the other tongue when the bearing is not installed which is almost or completely closed when the bearing is installed «

With the joint bearing according to the innovation, it is possible to create an independently adjustable joint bearing that can be easily dismantled after removal from the housing bore.

According to further features of the innovation, two or more point diametrically opposed outer tongues on each other facing surfaces no ribs or the like. surface »provided with a circumferential groove that dividing a plate spring-like section »This plate spring-like section is used to bridge the axial tolerances and to generate an axially directed preload in the housing.

The innovation is described in more detail below with reference to an embodiment shown in the drawing.

Show it:

Fig. 1 is an axial section A-B according to FIG. 2 of a ge novelty joint bearing outer ring,

FIG. 2 shows the plan view of the one shown in FIG Outer ring,

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Fig. 3 shows an axial section C-D according to FIG. 4 of a further execution s f ο rm,

FIG. 4 shows the plan view of the spherical bearing outer ring according to FIG. 3,

FIG. 5 shows an axial section E-F according to FIG. 6 of a spherical bearing outer ring which has been modified again,

FIG. 6 shows a part of the top view of the spherical bearing outer ring according to FIG. 5,

FIG. 7 shows part of the view G according to FIG. 5. The spherical bearing shown in Figures 1 and 2

Outer ring is, starting from the end face 1, with a circumferential recess 2 and a plurality of radially continuous slots 3 distributed around the circumference provided that extend in the axial direction to over the

Bearing center extend and inner tongues 4 and outer

Divide tongues 5. Three zones are provided in the bore of the outer ring. In Zone I there is a Section 6 with the sliding surface for the inner ring or the ball head (not shown) of the spherical bearing. the Zone II has a section 7 with a circumferential recess so that the inner ring or the ball head in this area has no contact with the outer ring, the inner tongues 4 are in zone III with a Section 8 is provided with a radius of curvature which is shown in not installed condition of the bearing is less than that of the sliding surface of the inner ring, so that axially and radially acting springs are created that form the inner ring or bring the ball head to the section 6 to rest

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and generate freedom from play. With the specified preload, a certain frictional torque is set and the automatic readjustment of the bearing is guaranteed. One or more axially extending ribs 9 are arranged on the inner tongues 4, in which case When the bearing is not installed, a gap 10 remains between the ribs 9 and the outer tongues 5. The outer tongues 5 each have a conical projection 11 on the jacket. This achieves that the outer tongues 5 are bent radially inward when installing the bearing in the bore of a housing and the outer ring is arranged with a radial preload in a housing, which, however, is not or only slightly acts on the inner ring. This deformation creates the gap 10 between the axially extending ribs 9 and the outer tongues 5 largely closed, so that after the installation of the outer ring in the bore of a housing in the radial direction almost a form fit between the inner tongues 4 and the outer Tongues 5 is achieved, which prevents the inner ring or the ball head from being dismantled after the bearing has been installed can be. Two diametrically opposite outer tongues 12 are each provided with a radially outwardly directed projection 13 on a Has side radially directed end faces 14. So that the two outer tongues 12 better in the radial direction can yield, the mutually facing surfaces 12a are formed without ribs 9. On the unslotted Side is the outer ring, at a distance from the end face and starting from the lateral surface 15, with a circumferential recess 16 provided, which divides a plate spring-like portion 17, the outer side surface

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18 is designed inclined to the center of the camp. The plate spring-like one When inserting the bearing into a housing bore, section 17 is preloaded in the axial direction to such an extent that until the radial projections 13 engage in housing grooves or the like. And the outer ring with a constant axial preload is fixed in the housing.

The spherical bearing outer ring shown in FIGS. 3 and 4 differs from that in FIGS. 1 and 2 Outer ring shown in that it has an annular in the end face 19 facing away from the slots 3 Has recess 20 in which an O-ring 21 made of an elastic material is arranged, which is not built-in State of the bearing protrudes beyond the end face 19. The elastic O-ring 21 is when inserted of the bearing in a housing bore so far compressed in the axial Fiichiang that the radial Projections 13 snap into housing grooves or the like and the outer ring with a constant axial preload is fixed in the housing.

In the construction shown in Figs is the spherical bearing outer ring instead of the plate spring-like section 17 (Fig. 1) with several, end face resilient tongues 22 arranged on the outer ring are provided.

These described embodiments are only examples. of a spherical bearing outer ring according to the innovation, changes in the design are within the scope of the innovation possible.

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Claims (7)

1 tSKFKUGELLAGERFABRIKEN • ■ «· ··· · ι> ■ 10.01.1984 TPA / bla.trZ • ·« f · • · a · i | ···· GMBHSchweinfurt, DE 84 001 DE Radi al-Ge1 enklager protection claims 1. Radial spherical plain bearing, consisting of an outer ring Or the like. And an inner ring or ball head arranged in a spherical bore, in which the Outer ring, starting from one end face, with a circumferential, axially directed recess and on the The jacket is provided with projections in the region of the recess, characterized in that the outer ring on the side provided with the circumferential recess (2) axially directed, radially continuous Has slots (3) which divide the outer tongues (5, 12) and inner elastic tongues (4), and that at least one of the radially superposed tongues (4 or 5) on the mutually facing Surfaces with one or more ribs (9) or the like. Is provided, the ribs (9) in the When not installed, the bearing is separated from the other tongues (5 or 4) by a gap (10) which is almost or completely closed when the bearing is installed. -2- -2- 2. Radial spherical plain bearing according to claim 1, characterized in that that the outer ring in the bore has a section (7) with a circumferential recess has, to which there is a section on the unslotted side of the outer ring with the sliding surface for the inner ring or the spherical head of the spherical bearing and on the other Side is connected to a section (8) with a radius of curvature, which in the non-installed state of the The bearing is smaller than that of the sliding surface of the inner ring. 3. Radial spherical plain bearing according to one of claims 1 or 2, characterized in that two or more diametrically opposing outer tongues (12) on the mutually facing surfaces (12a) have no ribs (9) or the like. 4. Radial spherical plain bearing according to one of claims 1 to 3, characterized in that the outer ring is on the unslotted side, at a distance from the end face and, proceeding from the jacket surface (15), has a circumferential recess (16) which has a cup spring-like section (17) divides. 5. Radial spherical plain bearing according to claim 4, characterized in that that the outer side surface (18) of the plate spring-like section (17) to the center of the bearing executed inclined i «t. -3- • · Il It t * IfII Il (· · · Ii ι «ι« · «ti -3- 6. Radial spherical plain bearing according to one of claims 1 to 3, characterized «that the outer ring is in the The end face (19) facing away from the slots (3) has an annular recess (20) in which an O-ring (21) is arranged from an elastic material, which in the non-installed state of the bearing protrudes beyond the face of the outer ring. | 7. Radi al-spherical plain bearing according to one of claims 1 to 3, characterized in that on the the slots (3) facing away from the end face of the outer ring resilient tongues (22) or the like. Are arranged. -4-