Ball joint with an inner joint part and chassis component with such a ball joint

Abstract

The invention relates to a ball joint (1, 16, 26, 31) with an inner joint part (2), wherein the inner joint part (2) has a ball joint (3), with a joint housing (4), wherein the ball joint (3) is movably mounted in the joint housing (4), and with at least one sealing bellows (6), wherein the sealing bellows (6) extends between the joint housing (4) and a contact section (7) of the inner joint part (2), and the contact section (7) of the inner joint part (2) is arranged outside an interior space (8) of the joint housing (4) that receives the ball joint (3). To enable a more compact design, the ball joint (1, 16, 26, 31) is characterized in that the ball joint (3) transitions directly into the contact section (7) for the sealing bellows (6).

Description

[0001] The invention relates to a ball joint with an inner joint part, wherein the inner joint part comprises a ball joint, and with a joint housing, wherein the ball joint is movably mounted in the joint housing, and with at least one sealing bellows, wherein the sealing bellows extends between the joint housing and a contact section of the inner joint part, and the contact section of the inner joint part is arranged outside an interior space of the joint housing that receives the ball joint. The invention further relates to a chassis component with such a ball joint.

[0002] Such a ball joint is known from KR 102 405 188 B1. In this design, the inner joint part is formed as a ball sleeve, with a joint pin extending from the ball of the inner joint part in two opposite directions. The ball of the joint first transitions into a pin neck section of the joint pin. At one end of the joint pin, facing away from the ball, a contact section is formed, against which a sealing bellows edge on the inner joint part rests. Thus, the pin neck section is formed between the contact section and the ball of the joint. This results in an overall length for the inner joint part that precludes a more compact design, which is sometimes desired.

[0003] The object underlying the invention is to further develop a ball joint and / or a chassis component of the type mentioned above in such a way as to enable a more compact design. In particular, an alternative embodiment is to be provided.

[0004] The problem underlying the invention is solved by means of a ball joint according to claim 1 and by means of a chassis component according to claim 10. Preferred embodiments of the invention are found in the dependent claims and in the following description.

[0005] The ball joint has an inner joint component. In vehicle construction, ball joints can be used in a variety of ways. Particularly in the chassis, ball joints serve to connect chassis components such as control arms, wheel carriers, tie rods, or the like to each other or to the vehicle body or an axle carrier attached to it. Such a ball joint can be designed as a ball sleeve joint or as a ball stud joint. Accordingly, the inner joint component can be realized as a ball sleeve or as a ball stud. The inner joint component has a ball joint. In particular, the ball joint component is generally not a complete sphere, but rather a segment of a spherical ball. Preferably, at least one stud segment of the inner joint component extends from the ball joint component away from it.

[0006] The ball joint has a joint housing, wherein the ball joint is movably mounted within the joint housing. In particular, the inner joint part is rotatably and / or tiltably mounted within the joint housing and / or in a bearing shell fixed within the joint housing. Preferably, a movable and / or articulated mounting of the inner joint part within the joint housing is understood to mean pivoting, tilting, and / or rotating mobility.

[0007] The term "tilting" or "tilting" of the inner joint part refers in particular to a movement of the inner joint part relative to the joint housing in which a change occurs in the angle between the central longitudinal axis of the inner joint part and the central longitudinal axis of the housing. Preferably, the tilting or tilting occurs about the center point of the bearing and / or the ball joint. The term "rotating" or "twisting" of the inner joint part refers in particular to a movement of the inner joint part in which the inner joint part is rotated relative to the joint housing about its central longitudinal axis.

[0008] The joint housing can be designed as a separate component, particularly as a sleeve. For example, the joint housing can be made of metal or sheet metal. Alternatively, the joint housing can be designed and / or supplied as a single-piece component of a chassis assembly.

[0009] The ball joint has at least one sealing bellows, which extends between the joint housing and a contact section of the inner joint part. This contact section of the inner joint part is located outside an interior space within the joint housing that accommodates the ball joint. The sealing bellows serves, in particular, to protect the joint area of ​​the ball joint from external environmental influences such as contamination, moisture, mechanical stresses, and the like. To fulfill this function, the sealing bellows is made of a flexible, preferably elastic, material, ideally an elastomer, and is designed as a tube-like hollow body with two open ends.Preferably, the sealing bellows comprises a housing-side sealing bellows edge at one end facing the joint housing and a joint-inner-side sealing bellows edge at the opposite end facing the joint inner part, as well as a sleeve connecting these edges. The sleeve can be designed differently, whereby a contour can be selected that is both compressible and stretchable to ensure joint mobility. The housing-side sealing bellows edge and / or the joint-inner-side sealing bellows edge can each have a clamping ring. In particular, the clamping ring can be partially or completely embedded or integrated into the material of the sealing bellows, preferably the sleeve.

[0010] According to the invention, the ball joint transitions directly into the mounting section for the sealing bellows.

[0011] An advantage of this design is the elimination of a free section of the pin neck. The inner joint component, and therefore the ball joint, can be manufactured with a shorter overall length, resulting in a more compact design.

[0012] According to a further development, the system section has a cylindrical outer circumferential surface. In particular, the system section is designed to be conical, pin-shaped, or cylindrical. A sealing bellows edge on the inside of the joint is in direct or indirect contact with the outer circumferential surface of the system section.

[0013] Preferably, a retaining ring is fixed to the outer circumferential surface, with the sealing bellows edge resting on a contact surface of the retaining ring facing away from the outer circumferential surface. The retaining ring can be pressed onto the outer circumferential surface of the contact section. In particular, the retaining ring has an L-shaped cross-section. A first section of the retaining ring can be arranged coaxially to a central longitudinal axis of the inner joint part. A second section of the retaining ring can extend outwards from the first section, either transversely or perpendicularly to it. The second section can be arranged at an end of the first section facing away from the joint ball. Preferably, the second section serves as a contact surface for the sealing bellows edge on the inner joint part, acting in the axial direction to the central longitudinal axis of the inner joint part.This prevents axial slippage of the sealing bellows edge on the inside of the joint, especially towards a free end of the system section.

[0014] The contact section can be delimited by a web projecting radially outwards from the central longitudinal axis of the inner joint part. This web projects radially outwards beyond the outer circumferential surface of the contact section. In particular, the web is annular or ring-shaped. Preferably, the web is associated with a free end of the inner joint part and / or is arranged facing away from the ball joint of the inner joint part. The web can be formed integrally with the inner joint part. Furthermore, a side of the web facing away from the sealing bellows edge on the inner joint part can merge into an end face of the inner joint part and / or coincide with the end face of the inner joint part. In particular, the web prevents axial slippage of the sealing bellows edge or the retaining ring bearing against the contact section.

[0015] In a further embodiment, the sealing bellows extends radially from the joint housing to a central longitudinal axis of the joint housing, reaching the contact section of the inner joint part. This enables a particularly compact design of the ball joint, especially compared to a sealing bellows extending axially. In combination with the contact section for the sealing bellows' inner joint part edge, which transitions directly into the ball joint, the length of the inner joint part in the axial direction of its central longitudinal axis, and thus the overall length of the ball joint in the axial direction of the central longitudinal axis of the joint housing, can be significantly reduced. In particular, the sealing bellows compresses and / or stretches when the inner joint part is displaced radially relative to the central longitudinal axis of the joint housing.

[0016] The sealing bellows can have at least one fold, and in particular several folds, between the joint housing and the contact area of ​​the inner joint part. For example, the sealing bellows may have a single fold or two folds. The fold(s) allow the sealing bellows to stretch and / or compress when the inner joint part moves relative to the joint housing.

[0017] According to a further development, a housing-side sealing bellows edge rests against a contact surface. This contact surface can extend coaxially to the central longitudinal axis of the joint housing. For example, the contact surface can be provided or formed by means of an annular section of the joint housing. In particular, the contact surface is designed as a cylindrical inner circumferential surface of the joint housing and / or the annular section.

[0018] In a further embodiment, the contact surface can be designed as a cylindrical inner circumferential surface of a retaining section formed integrally with a bearing shell for the ball joint. In particular, the bearing shell is fixed in the joint housing, with the ball joint being movably mounted in the bearing shell. The bearing shell with the retaining section can be manufactured by injection molding. For this purpose, the bearing shell can be manufactured by injection molding directly between the joint housing and the ball joint. In particular, the bearing shell with the retaining section is made of a plastic. Preferably, the retaining section has a ring-shaped or annular retaining web that is coaxial with the central longitudinal axis of the joint housing. A connecting web of the retaining section extends radially inwards from the retaining web to the central longitudinal axis of the joint housing.The housing-side sealing bellows edge can abut both the retaining web and the connecting web. The connecting web can abut an end face of the joint housing. In particular, the retaining section of the bearing shell has an L-shaped or L-like cross-section. Preferably, the retaining section of the bearing shell is arranged outside an interior space of the joint housing. A bearing section of the bearing shell can articulately support the ball joint, wherein the bearing section is arranged within the joint housing and / or the interior space of the joint housing. In particular, the bearing section of the bearing shell fills a region of the interior space between the joint housing and the ball joint.

[0019] Preferably, the housing-side sealing bellows edge and the joint-side sealing bellows edge are arranged at the same axial height with respect to the central longitudinal axis of the joint housing.

[0020] In a further embodiment, a housing-side sealing bellows edge of the sealing bellows is fixed to the joint housing by means of a clamping ring. In particular, the clamping ring is at least partially pressed onto the joint housing, preferably onto an outer circumferential surface of the joint housing. By means of the clamping ring, the housing-side sealing bellows edge can be reliably fixed to the joint housing.

[0021] The clamping ring can have an L-shaped cross-section. In particular, the clamping ring is formed from a first leg and a second leg. The first leg of the clamping ring can be fixed to a receiving section of the joint housing. Preferably, the receiving section is designed for arranging and / or fixing the clamping ring to the joint housing. The housing-side sealing bellows edge of the sealing bellows can be fixed and / or clamped between the second leg of the clamping ring and an end face of the joint housing. In particular, the first leg extends coaxially to the central longitudinal axis of the joint housing and / or the second leg extends radially to the central longitudinal axis of the joint housing. The second leg can extend transversely or at right angles and radially inwards from one end of the first leg to the central longitudinal axis of the joint housing.

[0022] According to a further development, the receiving section has a first receiving surface and a second receiving surface. The first receiving surface extends coaxially to the central longitudinal axis of the joint housing, and the second receiving surface extends radially outwards from the first receiving surface to the central longitudinal axis of the joint housing. In particular, the second receiving surface provides a boundary for the radial positioning of the clamping ring on the receiving section. For example, pressing the clamping ring onto the receiving section and in the axial direction of the central longitudinal axis of the joint housing is limited by the second receiving surface.

[0023] The housing-side sealing bellows edge can be glued and / or vulcanized to the clamping ring. This can simplify the assembly of the sealing bellows and the clamping ring.

[0024] A chassis component with a ball joint according to the invention is particularly advantageous. In particular, the ball joint is designed as a ball-sleeve joint and / or the inner part of the joint is designed as a ball sleeve. The chassis component and / or the ball joint can be arranged in the chassis of a motor vehicle.

[0025] Preferably, the chassis component is further developed according to the embodiments described herein in connection with the ball joint according to the invention. Furthermore, the ball joint described herein can be further developed according to the embodiments described herein in connection with the chassis component.

[0026] The invention is explained in more detail below with reference to the figures. Reference numerals refer to identical, similar, or functionally equivalent components or elements. The figures show: Fig. 1 a cutaway side view of a first ball joint according to the invention, Fig. 2 a cutaway side view of a second ball joint according to the invention, Fig. 3 a cutaway side view of a third ball joint according to the invention, and Fig. 4 a cutaway side view of a further ball joint according to the invention.

[0027] Fig. Figure 1 shows a cutaway side view of a first ball joint 1 according to the invention. The ball joint 1 has an inner joint part 2. In this embodiment, the ball joint 1 is designed as a ball sleeve joint, and the inner joint part 2 is designed as a ball sleeve. The inner joint part 2 has a ball 3, the ball 3 being movably mounted in a joint housing 4. According to this embodiment, the inner joint part 2 is rotatably and / or tiltably mounted in a bearing shell 5 fixed in the joint housing 4. In this example, the joint housing 4 is designed as a separate component in the form of a sleeve formed from sheet metal. Alternatively, the joint housing can be implemented and / or provided as a one-piece component of a chassis component.

[0028] In this embodiment, the ball joint 2 has two sealing bellows 6. Each sealing bellows 6 extends between the joint housing 4 and a contact section 7 of the inner joint part 2. The contact section 7 of the inner joint part 2 is arranged outside an interior space 8 of the joint housing 4 that accommodates the ball joint 3 and the bearing shell 5.

[0029] The sealing bellows 6 has a housing-side sealing bellows edge 9 at one end facing the joint housing 4 and a joint-side sealing bellows edge 10 at an opposite or away end facing the inner part of the joint 2.

[0030] The ball joint 3 transitions directly into the mounting section 7 for the sealing bellows 6 or the sealing bellows edge 10 on the inside of the joint. According to this embodiment, the mounting section 7 has a cylindrical outer circumferential surface 11. Furthermore, the mounting section 7 is conical or cylindrical in shape. In this example, the sealing bellows edge 10 on the inside of the joint of the sealing bellows 6 rests directly against the outer circumferential surface 11 of the mounting section 7.

[0031] The sealing bellows 6 extends radially from the joint housing 4 to a central longitudinal axis 12 of the joint housing 4, to the contact section 7 of the inner joint part 2. In combination with the contact section 7, which transitions directly into the ball joint 3, for the sealing bellows edge 10 on the inner joint part side, the length of the inner joint part 2 in the axial direction of a central longitudinal axis 13 of the inner joint part 2, and thus of the entire ball joint 1 in the axial direction of the central longitudinal axis 12 of the joint housing 4, is significantly reduced. When the inner joint part 2 is displaced radially relative to the central longitudinal axis 12 of the joint housing 4, as illustrated here, the respective sealing bellows 6 is compressed on the one hand and stretched on the other.In this embodiment, the sealing bellows 6 has a fold between the joint housing 4 and the contact section 7 of the inner joint part 2, which allows the sealing bellows 6 to stretch and / or compress when the inner joint part 2 moves in relation to the joint housing 4.

[0032] The housing-side sealing bellows edge 9 of the sealing bellows 6 rests against a contact surface 14 of the joint housing 4. In this example, the contact surface 14 extends coaxially to the central longitudinal axis 12 of the joint housing 4. Here, the contact surface 14 is provided by means of an annular section 15 of the joint housing 4. The contact surface 14 is designed as a cylindrical inner circumferential surface of the joint housing 4 or the annular section 15. In this embodiment, the housing-side sealing bellows edge 9 and the joint-side sealing bellows edge 10 are arranged at essentially the same axial height with respect to the central longitudinal axis 12 of the joint housing 4. This results in a particularly compact design for the ball joint 1.

[0033] In this embodiment, the housing-side sealing bellows edge 9 and the joint-side sealing bellows edge 10 are each secured and fixed with respect to their position on the contact surface 14 and the outer circumferential surface 11 by means of a clamping ring 16 and 17 respectively.

[0034] Fig. Figure 2 shows a cutaway side view of a second ball joint 16 according to the invention. The construction of the second ball joint 16 is similar to that of the first ball joint 1 according to the invention. Fig. 1. Identical features therefore bear the same reference symbols as before. In this respect, reference is also made to the preceding description to avoid repetition.

[0035] The sealing bellows on the inside of the joint is positioned as in the version according to Fig. 1 at the system section 7. In contrast, according to the ball joint 16 shown here, the housing-side sealing bellows edge 9 of the sealing bellows 6 is fixed to the joint housing 4 by means of a clamping ring 19. According to this embodiment, the housing-side sealing bellows edge 9 extends radially outwards to the central longitudinal axis of the joint housing 4.

[0036] The clamping ring 19 is partially pressed onto an outer circumferential surface of the joint housing 4. The clamping ring 19 reliably secures the housing-side sealing bellows 9 to the joint housing 4. This allows the clamping ring 16 to be tightened according to the design shown. Fig. 1. For this purpose, the clamping ring 19 has an L-shaped cross-section according to this embodiment. Accordingly, the clamping ring 19 has a first leg 20 and a second leg 21.

[0037] Here, the first leg 20 of the clamping ring 19 is fixed to a receiving section 22 of the joint housing 4. Thus, the ball joint 18 has the receiving section 22 instead of the ring section 15 of the ball joint 1 according to Fig. 1. The receiving section 22 is designed for arranging and securing the clamping ring 19 to the joint housing 4. For this purpose, the housing-side sealing bellows edge 19 is secured or clamped between the second leg 21 of the clamping ring 19 and an end face 23 of the joint housing 4. The end face 23 defines an axial end of the joint housing 4 and extends radially to the central longitudinal axis 12 of the joint housing 4. In this embodiment, the housing-side sealing bellows edge 10 is vulcanized to the clamping ring 19.

[0038] The first leg 20 extends coaxially to the central longitudinal axis 12 of the joint housing 4 and the second leg 21 extends radially to the central longitudinal axis 12 of the joint housing 4. The second leg 21 extends at right angles and radially inwards from one end of the first leg 20 to the central longitudinal axis 12 of the joint housing 4.

[0039] The receiving section 22 has a first receiving surface 24 and a second receiving surface 25. The first receiving surface 24 extends coaxially to the central longitudinal axis 12 of the joint housing 4, and the second receiving surface 25 extends radially outwards from the first receiving surface 24 to the central longitudinal axis 12 of the joint housing 4. The second receiving surface 25 provides a boundary for the radial pressing of the clamping ring 19 onto the receiving section 22, thus limiting the pressing of the clamping ring 19 onto the receiving section 22 and in the axial direction of the central longitudinal axis 12.

[0040] Fig. Figure 3 shows a cutaway side view of a third ball joint 26 according to the invention. The construction of the further ball joint 26 is similar to that of the second ball joint 16 according to the invention. Fig. 2. Identical features therefore bear the same reference symbols as before. In this respect, reference is also made to the preceding description to avoid repetition.

[0041] The housing-side sealing bellows 9 is as in the version according to Fig. 2 is fixed by means of the clamping ring 19. In contrast, according to the ball joint 26 shown here, the sealing bellows 10 on the inside of the joint is not arranged directly, but indirectly on the outer circumferential surface 11 of the system section 7.

[0042] For this purpose, a retaining ring 27 is fixed on the outer circumferential surface 11 of the system section 7, wherein the sealing bellows edge 10 on the inside of the joint part rests on a contact surface 28 of the retaining ring 27 facing away from this outer circumferential surface 11.

[0043] In this embodiment, the retaining ring 27 is pressed onto the outer circumferential surface 11 of the contact section 7. The retaining ring 27 has an L-shaped cross-section in this example. A first section 29 of the retaining ring 27 is arranged coaxially with the central longitudinal axis 13 of the inner joint part 2. A second section 30 of the retaining ring 27 extends outwards from the first section 29 at right angles to it. The second section 30 is located at an end of the first section 29 facing away from the ball joint 3. The second section 30 serves as a bearing for the sealing bellows 10 on the inner joint part, acting axially in the direction of the central longitudinal axis 13 of the inner joint part 2. This prevents the sealing bellows 10 on the inner joint part from slipping axially towards a free end of the contact section 7.

[0044] In this embodiment, the clamping ring 17 is designed according to the specifications in Fig. 1 or Fig. 2 omitted. Alternatively, the clamping ring 17 can also be used in combination with the retaining ring 27.

[0045] Fig. Figure 4 shows a cutaway side view of a further ball joint 31 according to the invention. The construction of the further ball joint 31 is similar to that of the first ball joint 1 according to the invention. Fig. 1. Identical features therefore bear the same reference symbols as before. In this respect, reference is also made to the preceding description to avoid repetition.

[0046] In this embodiment, the contact surface 14 for the housing-side sealing bellows 9 is designed as a cylindrical inner circumferential surface of a retaining section 31. Here, the retaining section 32 is realized as a single-piece component of the bearing shell 5.

[0047] The retaining section 32 has a ring-shaped retaining web 33 that is coaxial with the central longitudinal axis 12 of the joint housing 4. The retaining web 32 forms the contact surface 14. Extending from the retaining web 32, a connecting web 34 of the retaining section 32 projects radially inwards towards the central longitudinal axis 12 of the joint housing 4. The side of the connecting web 34 facing away from the sealing bellows 6 rests on an outer surface or end face 35 of the joint housing 4. In this embodiment, the outer surface 35 extends perpendicular to the central longitudinal axis 12 of the joint housing 4.

[0048] In this example, the housing-side sealing bellows edge 9 rests against both the retaining web 33 or the contact surface 14 and the connecting web 34, namely on a side of the connecting web 34 facing away from the end face 35 of the joint housing 4.

[0049] The retaining section 32 forms an L-shaped or L-like cross-section in the area of ​​the housing-side sealing bellows edge 9 with the retaining web 33 and the connecting web 34. The retaining section 32 of the bearing shell 5 is located outside the interior 8 of the joint housing 4. A bearing section 36 of the bearing shell 5 movably receives the ball joint 3. The bearing section 36 is located within the joint housing 4, specifically within the interior 8 of the joint housing 4. The bearing section 36 of the bearing shell 4 fills a region of the interior 8 between the joint housing 4 and the ball joint 3.

[0050] The bearing shell 5 with the retaining section 32 and the bearing section 36 is manufactured using an injection molding process. In this process, a plastic material is injected and / or cast between the joint housing 4 and the ball joint 3 to form the bearing shell 5.

[0051] In this embodiment, it can be seen that the contact section 7 is bounded by a web 37 projecting radially outwards from the central longitudinal axis 13 of the inner joint part 2. The web 37 projects radially outwards beyond the outer circumferential surface 11 of the contact section 7. In this embodiment, the web 37 is ring-shaped. One web 37 is arranged at each of two free ends of the inner joint part 2 facing away from each other. The web 37 is formed integrally with, or as a component of, the inner joint part 2.

[0052] In this embodiment, one side of the web 37 facing away from the sealing bellows edge 10 on the inside of the joint transitions into an end face 38 of the inner joint part 2. In this example, the end face is flat and perpendicular to the central longitudinal axis 13 of the inner joint part 2. The web 38 prevents axial slippage of the sealing bellows edge 10 on the inside of the joint part, which in this embodiment rests against the contact section 7. Reference sign 1 ball joint 2. Inner joint part 3 ball joints 4 joint housings 5 bearing cup 6 sealing bellows 7 Plant section 8 Interior 9 housing-side sealing bellows edge 10 joint inner part sealing bellows edge 11 External perimeter area 12 Central longitudinal axis of the joint housing 13 Central longitudinal axis of the inner joint part 14 Contact area 15 Ring section 16 clamping ring 17 Clamping ring 18 ball joint 19 clamping ring 20 first thigh 21 second thigh 22 Recording section 23 Front surface 24 first recording area 25 second recording surface 26 ball joint 27 retaining ring 28 Plant area 29 first section 30 second section 31 Ball joint 32 Stop section 33 landing stage 34 Connecting bridge 35 Front surface 36 Storage section 37 Bridge 38 Front QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] KR 102 405 188 B1

[0002]

Claims

[1] Ball joint with an inner joint part (2), wherein the inner joint part (2) has a ball joint (3), with a joint housing (4), wherein the ball joint (3) is movably mounted in the joint housing (4), and with at least one sealing bellows (6), wherein the sealing bellows (6) extends between the joint housing (4) and a contact section (7) of the inner joint part (2), and the contact section (7) of the inner joint part (2) is arranged outside an interior space (8) of the joint housing (4) that receives the ball joint (3), characterized by , that the ball joint (3) transitions directly into the installation section (7) for the sealing bellows (6). [2] Ball joint according to claim 1, characterized by, that the system section (7) has a cylindrical outer circumferential surface (11), wherein a sealing bellows edge (10) on the inside of the joint part of the sealing bellows (6) rests directly or indirectly on the outer circumferential surface (11), in particular a retaining ring (27) is fixed on the outer circumferential surface (11), wherein the sealing bellows edge (10) on the inside of the joint part rests on a contact surface (28) of the retaining ring (27) facing away from the outer circumferential surface (11). [3] Ball joint according to claim 1 or 2, characterized by , that the sealing bellows (6) extends radially from the joint housing (4) to a central longitudinal axis (12) of the joint housing (4) to the contact section (7) of the inner joint part (2), in particular a compression and / or stretching of the sealing bellows (6) results when the inner joint part (2) is displaced in relation to the central longitudinal axis (12) of the joint housing (4) in a radial direction to the central longitudinal axis (12) of the joint housing (4). [4] Ball joint according to any one of the preceding claims, characterized by , that the sealing bellows (6) between the joint housing (4) and the contact section (7) of the inner joint part (2) has at least one fold, in particular several folds. [5] Ball joint according to any one of the preceding claims, characterized bythat a housing-side sealing bellows edge (9) of the sealing bellows (6) abuts a contact surface (14), wherein the contact surface (14) extends coaxially to the central longitudinal axis (12) of the joint housing (4), in particular the contact surface (14) is designed as a cylindrical inner circumferential surface of the joint housing (4) or as a cylindrical inner circumferential surface of a retaining section (32) formed integrally with a bearing shell (5) for the joint ball (3), preferably the retaining section (32) has a ring-shaped or annular retaining web (33) coaxial to the central longitudinal axis (12) of the joint housing (4), wherein a connecting web (34) of the retaining section (32) extends radially inwards from the retaining web (33) to the central longitudinal axis (12) of the joint housing (4) and the housing-side sealing bellows edge (9) is connected to the retaining web (33) as well as at the connecting bridge (34). [6] Ball joint according to any one of claims 1 to 4, characterized by , that a housing-side sealing bellows margin (9) of the sealing bellows (6) is fixed to the joint housing (4) by means of a clamping ring (19). [7] Ball joint according to claim 6, characterized by , that the clamping ring (19) has an L-shaped cross-section, wherein a first leg (20) of the clamping ring (19) is fixed to a receiving section (22) of the joint housing (4) and the housing-side sealing bellows edge (9) of the sealing bellows (6) is fixed between a second leg (21) of the clamping ring (19) and an end face (23) of the joint housing (4), in particular the first leg (20) extends coaxially to the central longitudinal axis (12) of the joint housing (4) and / or the second leg (21) extends radially to the central longitudinal axis (12) of the joint housing (4). [8] Ball joint according to claim 7, characterized by, that the receiving section (7) has a first receiving surface (24) and a second receiving surface (25), wherein the first receiving surface (24) is coaxial to the central longitudinal axis (12) of the joint housing (4) and the second receiving surface (25) extends outwards from the first receiving surface (24) radially to the central longitudinal axis (12) of the joint housing (4), in particular the second receiving surface (25) forms a boundary for the arrangement of the clamping ring (19) on the receiving section (7) radially to the central longitudinal axis (12) of the joint housing (4). [9] Ball joint according to any one of claims 6 to 8, characterized by , that the housing-side sealing bellows edge (9) of the sealing bellows (6) is glued and / or vulcanized to the clamping ring (19). [10] Chassis component with a ball joint (1, 16, 26, 31) according to one of the preceding claims, in particular the ball joint (1, 16, 26) is designed as a ball sleeve joint and / or the inner part of the joint (2) as a ball sleeve.

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