DE102023201495B3 - Bearing shell for a ball joint and ball joint with such a bearing shell - Google Patents

Abstract

The invention relates to a bearing shell (1) for a ball joint (15) and with an interior (2) for movably receiving a joint ball (19), wherein the interior (2) has a spherical segment-like inner surface (3), with a bearing shell opening (5) formed coaxially to a central longitudinal axis (6) of the bearing shell (1), with a circular disk-like or annular disk-like base surface (8) facing away from the bearing shell opening (5) and formed coaxially to the central longitudinal axis (6). In order to improve the rigidity and/or to be able to realize a more cost-effective production, the bearing shell (1) is characterized in that an end of the base surface (8) which is radially outer to the central longitudinal axis (6) merges directly into a truncated cone surface (10), wherein an outer radius of the truncated cone surface (10) increases starting from the base surface (8) in the direction of the bearing shell opening (5), and an end of the truncated cone surface (10) which is axially remote from the base surface (8) merges into a cylindrical surface (11) which is coaxial to the central longitudinal axis (6).

Description

The invention relates to a bearing shell for a ball joint and with an interior for movably receiving a joint ball, wherein the interior has a spherical segment-like inner surface, with a bearing shell opening formed coaxially to a central longitudinal axis of the bearing shell, with a circular disk-like or annular disk-like base surface facing away from the bearing shell opening and coaxially to the central longitudinal axis, wherein an end of the base surface radially outer to the central longitudinal axis immediately merges into a truncated cone surface, and an outer radius of the truncated cone surface increases from the base surface in the direction of the bearing shell opening, and an end of the truncated cone surface axially facing away from the base surface merges into a cylindrical surface formed coaxially to the central longitudinal axis. Furthermore, the invention relates to a ball joint with such a bearing shell, wherein the bearing shell is arranged in a joint housing and the base surface and the cylindrical surface lie fully against an inner surface of the joint housing formed to correspond in shape.

Such a bearing shell and such a ball joint are from the EN 10 2020 209 477 B3 known.

From the EN 10 2019 208 143 A1 A bearing shell with a circular disk-like or ring disk-like base surface facing away from the bearing shell opening and coaxial to the central longitudinal axis is known. This bearing shell is preferably used in a ball joint designed as a support joint.

In particular, for use in a ball joint, the bearing shell and/or ball joint must be designed to have the highest possible axial and/or radial stiffness in relation to the central longitudinal axis. Furthermore, the bearing shell and/or ball joint should be manufactured and/or constructed as simply and/or cost-effectively as possible.

The object underlying the invention is to further develop a bearing shell and/or a ball joint of the type mentioned at the outset in such a way that the rigidity is improved and/or a more cost-effective production can be achieved. In particular, an alternative embodiment is to be provided.

The object underlying the invention is achieved with a bearing shell according to claim 1 and by means of a ball joint according to claim 8. Preferred developments of the invention can be found in the subclaims and in the following description.

The bearing shell is designed for a ball joint, in particular for forming and/or producing a ball joint. The bearing shell has an interior space. This interior space is designed to movably accommodate a joint ball. The interior space has an inner surface in the shape of a spherical segment. In particular, the inner surface in the shape of a spherical segment is designed to correspond to the outer circumference and/or the radius of the joint ball, preferably when the bearing shell is mounted in a joint housing. The joint ball can be accommodated or stored in the interior space of the bearing shell in a form-fitting and articulated manner.

Furthermore, the bearing shell has a bearing shell opening formed coaxially to a central longitudinal axis of the bearing shell. The bearing shell opening is preferably delimited by means of an annular edge. The edge can simultaneously form or have an end face of the bearing shell. In particular, a diameter of the bearing shell opening is determined or defined by means of an inner diameter of the annular edge and/or the end face.

The bearing shell has a circular disk-like or ring disk-like base surface facing away from the bearing shell opening and coaxial to the central longitudinal axis. In particular, the base surface of the bearing shell is designed to rest against a housing base. In particular, the housing base is a component of a joint housing and/or housing cover that is separate or designed separately from the bearing shell. The base surface is preferably arranged or designed centrally and/or coaxially to the central longitudinal axis of the bearing shell.

According to the invention, an end of the base surface that is radially outer to the central longitudinal axis merges directly into a truncated cone surface. In this case, an outer radius of the truncated cone surface increases from the base surface in the direction of the bearing shell opening, in particular in the axial direction to the central longitudinal axis. Furthermore, an end of the truncated cone surface that is axially remote from the base surface merges into a cylindrical surface that is coaxial to the central longitudinal axis.

The advantage here is that high axial forces can be transmitted by means of the base surface and the truncated cone surface. This also enables a high axial stiffness of the bearing shell. The base surface and the truncated cone surface merge directly into one another. This also enables a simple and cost-effective production The truncated cone surface and the cylindrical surface can also transmit high radial forces. This also makes it possible to achieve a high radial rigidity of the bearing shell.

Preferably, the base surface, the truncated cone surface and/or the cylinder surface are solid and/or made from a solid material. In particular, the entire bearing shell is solid and/or made from a solid material. The solid material can be a plastic. Preferably, the bearing shell is designed to be slot-free. This promotes the development of a high rigidity of the bearing shell.

The bearing shell and/or the ball joint preferably has a joint axis and/or the central longitudinal axis around which the joint ball and/or an inner joint part can be moved. The joint axis and/or the central longitudinal axis preferably extend in the axial direction of the bearing shell, the ball joint and/or the inner joint part. The joint axis and the central longitudinal axis can coincide. The joint axis is preferably the central longitudinal axis. In particular, the bearing shell and/or the ball joint is rotationally symmetrical or essentially rotationally symmetrical with respect to the joint axis and/or the central longitudinal axis. The joint axis and/or the central longitudinal axis can run through a center point of the joint ball and/or the interior of the bearing shell.

In the context of the present application, the term "radial" can designate one or any direction that runs perpendicular to the axial direction of the bearing shell, the ball joint, the joint axis and/or the central longitudinal axis. The term "axial" can designate one or any direction that runs parallel to the axial direction of the bearing shell, the ball joint and/or the central longitudinal axis.

The joint ball and/or the inner joint part can be mounted in the bearing shell so that it can rotate and/or tilt. In particular, an articulated mounting and/or articulated mounting of the joint ball in the bearing shell means a pivoting movement, tilting movement and/or rotational movement. Preferably, an articulated mounting and/or an articulated connection of two components refers to a connection of the two components by means of a joint such that the two components can be rotated relative to one another about at least one axis of rotation. Articulated connections about exactly one axis of rotation, about exactly two axes of rotation or about exactly three axes of rotation are therefore possible. In particular, an articulated connection does not allow any translational movement of the two components relative to one another.

Preferably, the inner joint part is designed as a ball pin. The ball pin has the joint ball and a joint pin. In particular, the joint pin extends from the joint ball through the bearing shell opening to the outside.

According to a further embodiment, the cylinder surface has an outer diameter that is larger than an outer diameter of the end of the truncated cone surface facing away from the base surface. The truncated cone surface preferably merges directly into the cylinder surface. Alternatively, the truncated cone surface may not merge directly or indirectly into the cylinder surface. In particular, the end of the truncated cone surface facing away from the base surface merges into the cylinder surface by means of a ring-disk-like stepped surface, wherein the stepped surface is aligned radially to the central longitudinal axis. The truncated cone surface thus merges into the cylinder surface by means of the stepped surface. In other words, the stepped surface enables a balance between the largest outer diameter of the truncated cone surface at the end of the truncated cone surface facing away from the base surface and the outer diameter of the cylinder surface, which is larger than the outer diameter of the end of the truncated cone surface facing away from the base surface.

According to a further development, the cylinder surface extends in the axial direction of the central longitudinal axis up to an equatorial plane or at least up to an equatorial plane of the bearing shell. The equatorial plane is aligned at right angles to the central longitudinal axis. Furthermore, the equatorial plane is located in the axial direction of the central longitudinal axis at the height of a maximum inner diameter of the interior. In particular, the equatorial plane is not a materially formed surface, but rather characterizes the area of the interior of the bearing shell with a maximum inner diameter that is perpendicular to the central longitudinal axis.

According to the invention, the cylinder surface merges directly and/or without offset into an annular surface in the direction of the bearing shell opening. In the area of the transition from the cylinder surface to the annular surface, the cylinder surface and the annular surface can have the same outer diameter. In particular, the annular surface, preferably in a non-assembled state of the bearing shell, is designed to be cylindrical or similar to a cylinder. An end of the annular surface facing away from the base surface and/or the cylinder surface can merge directly into an end surface, the end surface being transverse or perpendicular to the central longitudinal axis. and the end face is located in the axial direction of the central longitudinal axis at the level of the bearing shell opening. In particular, the annular surface extends from an equatorial plane of the bearing shell in the direction of the end face.

According to a further embodiment, starting from the equatorial plane of the bearing shell, a maximum dimension of the ring surface resulting in the axial direction to the central longitudinal axis corresponds to a maximum dimension of the cylinder surface resulting in the axial direction to the central longitudinal axis. The respective maximum dimension preferably determines a height of the ring surface or the cylinder surface measured parallel to the central longitudinal axis and starting from the equatorial plane and up to the respective end of the ring surface or the cylinder surface facing away from the equatorial plane. In particular, since these maximum dimensions and/or heights of the ring surface and the cylinder surface correspond, it follows that when the bearing shell is assembled, radial loads on the ring surface and the cylinder surface are of the same magnitude.

According to the invention, in an unassembled state of the bearing shell, the annular surface has a larger outer diameter starting from the cylindrical surface, in particular up to a radially aligned end face. The annular surface is preferably curved in the unassembled state of the bearing shell. In particular, in the unassembled state of the bearing shell, the annular surface is bent outwards starting from the equatorial plane and/or the cylindrical surface and in the direction of the end face radially to the central longitudinal axis. In the unassembled state, the annular surface and/or the bearing shell can therefore have a maximum outer diameter in the region of the annular surface and at the end of the annular surface facing away from the cylindrical surface. In particular, the unassembled bearing shell has a maximum outer diameter at the level and/or in the region of the bearing shell opening.

The ring surface is preferably cylindrical in an assembled state. An outer diameter of the cylindrical ring surface corresponds to the outer diameter of the cylinder surface. In particular, the bearing shell is arranged in a joint housing in the assembled state. When arranging and/or pressing the bearing shell into the joint housing, a part of the ring surface that is bent radially outwards can be deformed radially inwards so that the entire ring surface adapts to the outer diameter of the cylinder surface in terms of its outer diameter. At the same time, an inner diameter of the bearing shell opening can be reduced, whereby a sufficiently secure hold of a joint ball in the bearing shell is achieved. In particular, the joint ball of the inner joint part is pressed into the joint housing through the bearing shell opening before the bearing shell is assembled. The inner joint part and the bearing shell can thus be inserted and/or pressed into the joint housing together.

A ball joint with a bearing shell according to the invention is particularly advantageous, wherein the bearing shell is arranged in a joint housing and the bottom surface and the cylinder surface lie fully against an inner surface of the joint housing that has a corresponding shape. In particular, the ball joint and/or the bearing shell is designed for use in a chassis component for a chassis of a vehicle, preferably a motor vehicle. The ball joint and/or the bearing shell can thus be arranged in a chassis component. The ball joint can be used in a variety of ways in vehicle construction. In particular in the chassis, ball joints are used to connect chassis components, such as control arm components, wheel carriers, tie rods or the like, to one another or to the vehicle body or an axle carrier attached to it. Preferably, ball joints have a joint housing that is open on at least one side, in particular with a housing recess that forms the inner surface of the joint housing, for receiving an inner joint part. The inner joint part can be realized as a ball sleeve or as a ball pin. When designed as a ball pin, a pivot pin of the inner joint part can extend out of the housing opening and the bearing shell opening.

According to a further development of the ball joint, the inner surface of the joint housing has a step. In particular, the step is designed to correspond in shape to the step surface and thus to the transition between the truncated cone surface and the cylindrical surface of the bearing shell. The step surface of the bearing shell thus rests on the step of the joint housing in a shape corresponding to that. In particular, the inner surface has a hollow cylindrical section, with the cylindrical surface and the annular surface of the bearing shell resting in a form-fitting manner on the cylindrical section of the joint housing.

Preferably, the bearing shell is held in the joint housing by means of a locking ring. In particular, the locking ring is designed as a single piece and/or as a closed ring. The locking ring can be made of a metal. The locking ring is held in a groove in the joint housing. The groove can be closed after the locking ring has been inserted due to a plastic The locking ring can be formed by mechanical deformation of a housing edge. In particular, the locking ring is fixed to the joint housing by flanging the housing edge. The locking ring lies on the front face of the bearing shell. This holds the bearing shell in the joint housing. In particular, the bearing shell is clamped between the locking ring and the step of the joint housing in the axial direction to the central longitudinal axis, whereby the bearing shell is held and/or secured against rotation about the central longitudinal axis. This means that a positive locking anti-twist device is not necessary.

According to a further embodiment, the locking ring has a ring-like projection directed obliquely to the central longitudinal axis and in the direction of the interior and onto a surface of the joint ball to form a flow stop. Due to the projection, there is a minimal distance between the locking ring and the surface of the joint ball. This can bring about an effective or natural flow stop with regard to the plastic material of the bearing shell. In particular, such a flow stop enables the setting of low preloads in the ball joint and thus low torques for actuating the ball joint.

Preferably, the ball joint is further developed according to all embodiments explained in connection with the bearing shell according to the invention described here. Furthermore, the bearing shell described here can be further developed according to all embodiments explained in connection with the ball joint.

• 1 eine geschnittene Seitenansicht einer erfindungsgemäßen Lagerschale,
• 2 eine perspektivische Seitenansicht von Bestandteilen zum Ausbilden eines erfindungsgemäßen Kugelgelenks, und
• 3 eine geschnittene Seitenansicht eines erfindungsgemäßen Kugelgelenks.

The invention is explained in more detail below with reference to the figures. The same reference numerals refer to the same, similar or functionally identical components or elements. They show:

• 1 a sectional side view of a bearing shell according to the invention,
• 2 a perspective side view of components for forming a ball joint according to the invention, and
• 3 a sectional side view of a ball joint according to the invention.

1 shows a sectional side view of a bearing shell 1 according to the invention. The bearing shell 1 is made of a plastic. Furthermore, the bearing shell 1 is shown in a non-assembled state. The bearing shell 1 has an interior 2 for movably receiving a joint ball (not shown in detail here). Accordingly, the interior 2 has an inner surface 3 in the form of a spherical segment. The bearing shell 1 has a ring-like edge 4. The ring-like edge 4 determines or defines a bearing shell opening 5. The joint ball (not shown in detail here) can be arranged in the interior 2 through the bearing shell opening 5. In addition, the joint ball can partially extend out of the bearing shell opening 5 and/or an inner joint part comprising the joint ball can extend out of the bearing shell opening 5. The bearing shell opening 5 is formed coaxially to a central longitudinal axis 6 of the bearing shell 1. The bearing shell 5 has an end face 7 which is aligned transversely or at right angles to the central longitudinal axis 6 and is located in the axial direction of the central longitudinal axis 6 at the level of the bearing shell opening 5. In this embodiment, the end face 7 simultaneously forms the ring-like edge 4.

Facing away from the bearing shell opening 5 and coaxial with the central longitudinal axis 6, the bearing shell 1 has a bottom surface 8 which in this embodiment is designed like a ring disk. In this example, the bottom surface 8 has an outer diameter which in this embodiment corresponds to at least 3/4 of a maximum inner diameter of the interior 2. The diameter of the bottom surface 8 and the interior 2 extend at right angles to the central longitudinal axis 6.

In this embodiment, the base surface 8 is flat except for a central elevation 9. The central elevation 9 is designed as an injection point that results from the injection molding of the bearing shell 1.

An outer end of the base surface 8 radially to the central longitudinal axis 6 merges directly into a truncated cone surface 10. In this case, an outer radius of the truncated cone surface 10 increases starting from the base surface 8 in the direction of the bearing shell opening 5.

Furthermore, an end of the truncated cone surface 10 facing away from the base surface 8 merges into a cylindrical surface 11 formed coaxially to the central longitudinal axis 6. The cylindrical surface 11 has an outer diameter that is larger than an outer diameter of the end of the truncated cone surface 10 facing away from the base surface 8. Thus, the truncated cone surface 10 does not merge directly into the cylindrical surface 11. Instead, the end of the truncated cone surface 10 facing away from the base surface 8 merges into the cylindrical surface 11 by means of a ring-disk-like step surface 12. The step surface 12 is aligned radially to the central longitudinal axis 6.

The cylinder surface 11 extends in the axial direction of the central longitudinal axis 6 at least up to an equatorial plane 13 of the bearing shell 1. The equatorial plane 13 is aligned at right angles to the central longitudinal axis 6 and is located in the axial direction the central longitudinal axis 6 at the level of a maximum inner diameter of the interior space 2.

The cylindrical surface 11 merges directly into an annular surface 14 in the direction of the bearing shell opening 5. An end of the annular surface 14 facing away from the base surface 8 merges directly into the end surface 7. The annular surface 14 extends from the equatorial plane 13 of the bearing shell 1 in the direction of the end surface 7.

The ring surface 14 is not cylindrical in the non-assembled state of the bearing shell shown here. Instead, the ring surface 14 in the non-assembled state is bent radially outwards to the central longitudinal axis 6, starting from the cylindrical surface 11 and up to the end face 7. The outer diameter of the ring surface increases continuously in the direction of the end face 7.

Furthermore, in this embodiment, starting from the equatorial plane 13 of the bearing shell 1, a maximum dimension of the ring surface 14 resulting in the axial direction to the central longitudinal axis 6 corresponds to a maximum dimension of the cylinder surface 11 resulting in the axial direction to the central longitudinal axis 6. In other words, the ring surface 14 and the cylinder surface 11 each have the same height starting from the equatorial plane 13, with the ring surface 14 and the cylinder surface 11 extending in directions facing away from each other starting from the equatorial plane 13.

2 shows a perspective side view of components for forming a ball joint 15 according to the invention. In addition to the bearing shell 1, an inner joint part 16, a locking ring 17 and a joint housing 18 are provided for forming the ball joint 1. The bearing shell 1 is made of solid material or is slot-free.

The inner joint part 16 is designed as a ball pin and has a joint ball 10 and a joint pin 20. The locking ring 17 is designed as a closed ring.

In this embodiment, the joint housing 18 is made of a metal. Furthermore, the joint housing 18 has a housing recess 21. The housing recess 21 forms an inner surface of the joint housing 18 for positively receiving the bearing shell 1. A housing opening 23 of the joint housing 18 is surrounded by a ring-like housing edge 24.

3 shows a sectional side view of the ball joint 15 according to the invention in an assembled state. The annular surface 14 of the bearing shell 1 is cylindrical in the assembled state, wherein an outer diameter of the cylindrical annular surface 14 corresponds to the outer diameter of the cylindrical surface 11.

Before mounting the bearing shell 1 in the joint housing 18, the joint ball 13 of the inner joint part 16 is first inserted through the bearing shell opening 5 according to 1 Thus, the inner joint part 16 and the bearing shell 1 are pressed together into the joint housing 18 or into the housing recess 21 according to 2 used.

When inserting or pressing the bearing shell 1 into the joint housing 18, the 1 The part of the ring surface 14 that is bent radially outwards is deformed radially inwards in such a way that the entire ring surface 14 adapts in terms of its outer diameter to the outer diameter of the cylinder surface 11 or a hollow cylinder-like section of the inner surface 22 of the joint housing 18. At the same time, an inner diameter of the bearing shell opening 5 is reduced.

The base surface 8, the cylinder surface 11 and the ring surface 14 lie completely against the shape-corresponding inner surface 22 of the joint housing 18. In this embodiment, the joint housing has a recess 25 in the area of the elevation 9, into which the elevation 9 projects. The inner surface 22 of the joint housing 18 has a step 26. The step surface 12 of the bearing shell 1 lies on the step 26 in a shape-corresponding manner.

The bearing shell 1 is held in the joint housing 18 by means of the locking ring 17. For this purpose, the locking ring 17 is held in a groove 27 of the joint housing 18. After the locking ring 17 has been inserted, the groove 27 is formed as a result of a plastic deformation of the initially ring-like housing edge 23 according to 2 Thus, the locking ring 17 is fixed to the joint housing 18 due to a flanging of the housing edge 23.

In this case, the locking ring 17 simultaneously rests on the end face 7 of the bearing shell 1. The bearing shell 1 is clamped between the locking ring 17 and the step 26 of the joint housing 18 in the axial direction of the central longitudinal axis 6, whereby rotation of the bearing shell 1 about the central longitudinal axis 6 is blocked or prevented.

In this embodiment, the locking ring 17 has an oblique to the central longitudinal axis 6 and in the direction of the interior 2 or approximately in the direction of a center of the joint ball 19 and on a surface of a joint ball 19 directed, ring-like projection 28 for forming a flow stop. Due to the projection 28, a minimal distance results between the locking ring 17 and the surface of the joint ball 19.

Reference symbols

1

Bearing shell

2

inner space

3

Inner surface

4

edge

5

Layer shell opening

6

Central longitudinal axis

7

Frontal area

8th

Floor area

9

Survey

10

truncated cone surface

11

Cylinder surface

12

Step surface

13

Equatorial plane

14

Ring area

15

Ball joint

16

Inner joint part

17

Locking ring

18

Joint housing

19

Joint ball

20

Pivot pin

21

Housing recess

22

Inner surface

23

Housing opening

24

Housing edge

25

deepening

26

Level

27

Groove

28

head Start

Claims (11)

Bearing shell for a ball joint (15) and with an interior (2) for movably receiving a joint ball (19), wherein the interior (2) has a spherical segment-like inner surface (3), with a bearing shell opening (5) formed coaxially to a central longitudinal axis (6) of the bearing shell (1), with a circular disk-like or ring disk-like base surface (8) facing away from the bearing shell opening (5) and coaxially to the central longitudinal axis (6), wherein an outer end of the base surface (8) radially to the central longitudinal axis (6) immediately merges into a truncated cone surface (10), and an outer radius of the truncated cone surface (10) increases starting from the base surface (8) in the direction of the bearing shell opening (5), and an end of the truncated cone surface (10) axially facing away from the base surface (8) merges into a cylindrical surface (11) formed coaxially to the central longitudinal axis (6), characterized in that the cylindrical surface (11) in the direction of the bearing shell opening (5) directly merges into an annular surface (14), wherein the annular surface (14) in a non-assembled state has an increasing outer diameter starting from the cylinder surface (11). Bearing shell after Claim 1 , characterized in that the cylinder surface (11) has an outer diameter which is larger than an outer diameter of the end of the truncated cone surface (10) facing away from the base surface (8), in particular the end of the truncated cone surface (10) facing away from the base surface (8) merges into the cylinder surface (11) directly or by means of an annular disk-like step surface (12), wherein the step surface (12) is aligned radially to the central longitudinal axis (6). Bearing shell after Claim 1 or 2 , characterized in that the cylinder surface (11) extends in the axial direction of the central longitudinal axis (6) at least as far as an equatorial plane (13) of the bearing shell (1), wherein the equatorial plane (13) is aligned at right angles to the central longitudinal axis (6) and is located in the axial direction of the central longitudinal axis (6) at the level of a maximum inner diameter of the interior (2). Bearing shell according to one of the preceding claims, characterized in that an end of the annular surface (14) facing away from the base surface (8) merges directly into an end surface (7), wherein the end surface (7) is aligned transversely or at right angles to the central longitudinal axis (6) and is located in the axial direction of the central longitudinal axis (6) at the level of the bearing shell opening (5), in particular the annular surface (14) extends from an equatorial plane (13) of the bearing shell (1) in the direction of the end surface (7). Bearing shell according to one of the preceding claims, characterized in that, starting from an equatorial plane (13) of the bearing shell (1), a maximum dimension of the annular surface (14) resulting in the axial direction to the central longitudinal axis (6) corresponds to a maximum dimension of the cylinder surface (11) resulting in the axial direction to the central longitudinal axis (6), in particular When the bearing shell (1) is assembled, the radial loads on the ring surface (14) and the cylinder surface (11) are equal. Bearing shell according to one of the preceding claims, characterized in that the annular surface (14) in the unassembled state has the increasing outer diameter starting from the cylinder surface (11) up to a radially aligned end face (7), preferably the annular surface (14) is curved in the unassembled state of the bearing shell (1). Bearing shell according to one of the preceding claims, characterized in that the annular surface (14) is cylindrical in an assembled state, wherein an outer diameter of the cylindrical annular surface (14) corresponds to the outer diameter of the cylindrical surface (11). Ball joint with a bearing shell according to one of the preceding claims, wherein the bearing shell (1) is arranged in a joint housing (18) and the bottom surface (8) and the cylinder surface (11) lie fully against an inner surface (22) of the joint housing (18) which is designed to correspond in shape. Ball joint after Claim 8 , characterized in that the inner surface (22) of the joint housing (18) has a step (26), wherein a step surface (12) of the bearing shell (1) lies on the step (26) in a shape corresponding to that of the inner surface (22), in particular the inner surface (22) has a hollow cylindrical section, wherein the cylindrical surface (11) and an annular surface (14) of the bearing shell (1) bear in a form-fitting manner on the cylindrical section of the inner surface (22). Ball joint after Claim 8 or 9 , characterized in that the bearing shell (1) is held in the joint housing (18) by means of a locking ring (17), wherein the locking ring (17) is held in a groove (27) of the joint housing (18) and lies on an end face (7) of the bearing shell (1), in particular the bearing shell (1) is clamped between the locking ring (17) and a step (26) of the joint housing (18) in the axial direction to the central longitudinal axis (6), whereby the bearing shell (1) is held and/or secured against twisting about the central longitudinal axis (6). Ball joint after Claim 10 , characterized in that the closure ring (17) has an annular projection (28) directed obliquely to the central longitudinal axis (6) and in the direction of the interior (2) and onto a surface of a joint ball (19) for forming a flow stop.

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