DE102017211627B4 - Ball joint for a suspension arm - Google Patents

Abstract

Ball joint for a suspension arm, with a ball socket (12) and a ball head (9) and a rigidly connected to this pin (14) comprehensive ball stud (10) formed as a one-piece, metallic body and with its ball head (9) movable in the ball socket (12) is mounted, characterized in that the ball pin (10) is at least partially or completely formed as a hollow body.

Description

The invention relates to a ball joint for a suspension arm according to the preamble of claim 1, a suspension arm with such a ball joint according to the preamble of claim 9 and a method for producing such a ball joint or such a suspension arm according to the preamble of claim 10.

From the generic DE 196 38 231 A1 as well as the DE 10 2006 022 270 A1 In each case, a ball pin of a ball joint is known, wherein the ball pin is at least partially or completely formed as a hollow body.

Of the DE 10 2009 054 999 A1 shows a composite component, wherein in a U-shaped shell, a structural component is added with stiffening agents.

Suspension arms are articulated components and connect kinematic points in the suspension of vehicles and transmit movements and forces. The connection of a suspension link with a steered front wheel is usually realized with a ball joint, since this allows a second degree of freedom of the vehicle wheel mounted on the wheel for steering. In chassis technology, suspension control arms are preferably used today in series applications, preferably made of steel or aluminum. Furthermore, suspension links made of fiber composite materials are known. These suspension arms are in particular trailing arm and wishbone. For example, in the chassis of a passenger vehicle (car) three-point link (3-point link) used as Radführungslenker.

Made of metal, such as made of aluminum or steel, produced in the case of misuse a strong plastic deformation, the e.g. is visible by a malposition of the vehicle wheel. The driver can thus perceive the damage directly visually and / or by impairing the driving behavior. An advantage of a suspension arm made of metal is thus that a damage caused by misuse by a plastic deformation of the suspension arm is visible. Furthermore, the driving behavior of the vehicle generally also changes at the same time. The disadvantage, however, is that a chassis link made of metal has a high weight and a low specific strength and optionally offers only limited freedom of design.

In the case of a component of fiber composite material, in particular of a fiber-plastic composite (FKV), a failure such as e.g. a fiber break or intermediate fiber break or delamination, however, to strength and stiffness losses or to a sudden destruction of the component. Fiber breakage is generated, for example, by fiber-parallel stresses. In particular, an inter-fiber fracture extends between the fibers, either through the matrix or at a fiber-matrix interface. A crack extends e.g. parallel to the fiber direction. A delamination describes a separation break between individual layers of the FRP material and can suddenly spread over a larger area of the component. Since the abovementioned failure mechanisms can occur abruptly, they must be avoided in safety-relevant components in chassis technology. In particular, there is no plastic deformation before failure, which could indicate an overuse of the FKV component. Therefore, it makes sense to integrate load indicators into an FKV component, which make a functional impairment visible in the case of abuse.

A chassis link made of fiber composite material, in particular of a fiber-plastic composite, comprises e.g. a weight of 420 g, whereas a corresponding suspension arm made of aluminum, e.g. has a weight of 688 g. Although a suspension link made of fiber composite material can thus be produced more easily than a corresponding suspension link made of metal, there is a continuing desire to be able to further reduce the weight of the suspension link. One way to reduce weight is e.g. in that to replace existing metal parts with plastic parts. For example, the ball stud of the ball joint to be installed in the chassis link has a weight of 210 g and thus weighs about half of the FKV structure. The problem is, however, that the ball stud is exposed to heavy loads and may not break in abuse, which is why it is usually made of metal, preferably made of high-strength steel. Preferably, the ball stud should be made of a stretchable material having, for example, an elongation of 20% or more.

Proceeding from this, the invention has the object, in a ball joint of the type mentioned reduce the weight of the ball pin but still be able to avoid a sudden breaking in abuse case.

This object is achieved by a ball joint according to claim 1, by a suspension link with such a ball joint according to claim 9 and by a method according to claim 10.

The aforementioned ball joint for a suspension arm, with a ball socket and a ball head and a rigid with this associated pin comprising ball pin, which is formed as a one-piece, metallic body and is mounted with its ball head movable in the ball socket, in particular further developed in that the ball pin is at least partially or completely formed as a hollow body.

By at least partially or completely forming the ball stud as a hollow body material and thus weight can be saved compared to the prior art. Furthermore, in the event of an overloading of the ball stud, a deformation of the ball stud initially takes place, since the ball stud consists of metal. An abrupt breakage of the ball stud in case of abuse can thus be avoided.

The ball stud is or preferably forms a monolithic and / or material-homogeneous body. In this sense, the feature that the ball stud is formed as a one-piece body, in particular be replaced by the fact that the ball stud is formed as a one-piece and / or as a monolithic and / or as a material-homogeneous body.

Preferably, the ball stud comprises a Kugelzapfenwandung. Preferably, the ball pivot is associated with a pin longitudinal axis. In particular, the ball pin and / or the Kugelzapfenwandung with respect to the or a longitudinal axis of the pin rotationally symmetric or substantially rotationally symmetrical. Advantageously, the center of the ball head is located on the pin longitudinal axis.

The ball stud is preferably made of a ferrous material, e.g. Stole. Alternatively, the ball stud is e.g. made of titanium. Although titanium is relatively expensive, the cost can be reduced by the fact that the ball pin is not or not completely made of solid material, but at least partially or completely formed as a hollow body.

The ball stud is or is preferably made of metal by a generative manufacturing process. The generative manufacturing process is e.g. referred to as additive manufacturing. For example, the generative manufacturing process is 3D printing.

According to one embodiment, one or more cavities are or are provided in the ball stud. For example, the cavity or cavities, in particular by the material of the ball stud, separated from each other and / or divided into a plurality of partial cavities.

According to one embodiment, a spherical head cavity is or is provided in the ball head, which preferably forms the cavity or a part thereof or one of the cavities. For example, the ball-head cavity is elongated or cylindrical. Preferably, the ball-head cavity is spherical. In particular, in a spherical ball-head cavity significantly more material and thus weight can be saved as in an elongated or cylindrical ball-head cavity. For example, the ball head cavity, in particular by the material of the ball stud, divided into a plurality of partial cavities.

According to one embodiment, a spigot cavity is or is provided in the spigot, which preferably forms the cavity or one or another part thereof or one or another of the cavities. Preferably, the pin cavity is elongate or cylindrical. For example, the journal cavity, in particular by the material of the ball stud, divided into a plurality of partial cavities.

According to a further development, one or more, for example, are or will be in the ball stud and / or in the stud and / or in the stud cavity and / or in the ball head and / or in the ball head cavity and / or in the cavity or cavities web-shaped and / or rib-shaped and / or bar-shaped and / or rod-shaped, stiffening elements provided. The stud cavity and / or the ball head cavity and / or the cavity and / or one or at least one of the cavities is or will be or will be formed by the one or more stiffening elements in or in each of several part cavities or in or each one of more Partial cavities or divided into or in the respective partial cavities. For example, the cavities and / or the partial cavities are separated by the stiffening elements. Preferably, the or the stiffening elements are part of the one-piece and / or monolithic and / or material-homogeneous body. By or the stiffening elements, it is possible to increase the strength of the ball stud.

According to one embodiment, a truss structure is formed by the stiffening elements. For example, several of the stiffening elements extend transversely to the pin longitudinal axis and are spaced apart in the direction of the pin longitudinal axis. Additionally or alternatively, several or more other of the stiffening elements extend, for example, obliquely to the pin longitudinal axis. In particular, one or more stiffening element pairs are formed by the oblique stiffening elements, wherein the stiffening elements of the or each stiffening element pair are arranged crossing each other. Advantageously, the or each pair of stiffening elements between two transversely arranged to the pin longitudinal axis extending stiffening elements. For example, runs through the intersection of the intersecting stiffening elements of the or each pair of stiffening element or one of the transverse to the pin longitudinal axis extending stiffening elements.

According to a further development, the ball-head cavity or one or at least one of the partial cavities of the ball head merges into the journal cavity or into one or at least one of the partial cavities of the journal. For example, the ball-head cavity and the spigot cavity form a common cavity. The ball stud wall preferably surrounds and / or surrounds the hollow space and / or partial cavities, preferably completely or at least partially. For example, the cavity and / or ball-head cavity and / or the spigot cavity and / or the cavities and / or the partial cavities are formed as or in each case as a free space.

The one or more cavities and / or the partial cavities are or are provided in particular for reducing the weight of the ball stud. Additionally or alternatively, or is e.g. by the or the cavities and / or partial cavities, the strength of the ball stud, in particular targeted and / or defined and / or locally, reduced. In the event of overloading (misuse) of the ball stud, a deformation of the ball stud, preferably in a targeted and / or defined and / or local manner, can preferably be brought about in the area of the cavity or cavities and / or partial cavities. The cavity (s) and / or partial cavities thus form, in particular, one or more weak points, e.g. can also be referred to as fuse points and / or crash elements. The weak point or weak points are for example advantageous if the ball joint is used in a component made of a fiber-plastic composite and / or integrated or will, as thus, especially with a suitable design of vulnerabilities, in case of abuse, a functional impairment can be made visible.

According to a further development, the pin has an opening on its front side facing away from the ball head. In particular, the pin cavity or at least one of the partial cavities of the pin is accessible through this opening. Alternatively, the pin is on its end facing away from the ball head, e.g. closed trained.

According to one embodiment, the ball socket consists of the same or of the same or a different material than the ball stud. Preferably, the ball socket made of plastic, which is preferably a thermoplastic material. For example, the ball socket made of polyoxymethylene (POM), polyamide (PA) or polyetheretherketone (PEEK). Advantageously, the ball socket is designed as a bearing shell, which is in particular a spherical shell or forms. Preferably, the ball stud is slidably mounted with its ball and / or slidably mounted in the ball socket. Preferably, the ball stud is rotatably and / or pivotally mounted in the ball socket with its ball head. In particular, the ball pin extends out of the ball socket. The ball socket preferably comprises a ball socket opening, through which the ball pin extends out of the ball socket. The ball socket opening may e.g. Also referred to as a bearing shell opening or as a spherical shell opening.

According to one embodiment, a joint housing is or is provided, in which the ball socket, in particular together with the ball head, is or is introduced. Preferably, the ball joint comprises the or a joint housing, in which the ball socket, in particular together with the ball head, is introduced or is. Advantageously, the joint housing comprises a pin opening, through which the ball pin extends out of the joint housing. Preferably, the joint housing made of metal or plastic, which is preferably reinforced with fibers. For example, the hinge housing is made of aluminum, magnesium or a ferrous material, such as aluminum. Stole. Alternatively, the hinge housing consists of e.g. of a thermoplastic or thermosetting plastic, preferably reinforced with fibers, e.g. Glass fibers and / or aramid fibers and / or carbon fibers and / or basalt fibers.

The invention further relates to a suspension link with a ball joint and consisting of a fiber-plastic composite and a Gelenkaufnahmeausnehmung comprehensive handlebar body into which the ball joint is introduced or is. The ball joint is in particular the ball joint described above. The suspension link can be developed in accordance with all embodiments explained in connection with the previously described ball and socket joint. Furthermore, the ball joint described above can be developed according to all embodiments explained in connection with the suspension control arm.

Preferably, the ball joint is introduced with its ball socket and / or with its joint housing in the Gelenkaufnahmeausnehmung. In particular, the ball joint and / or the ball pin extends out of the link body.

The fiber-plastic composite comprises, for example, a matrix with fibers embedded therein. These fibers include, for example, glass fibers and / or Aramid fibers and / or carbon fibers and / or basalt fibers. For example, the fibers are short fibers and / or long fibers and / or continuous fibers. The matrix is preferably formed from a thermoplastic or thermosetting plastic or resin or synthetic resin.

According to one embodiment, the link body is assigned a maximum load, wherein the strength of the ball stud is reduced by the one or more cavities and / or partial cavities such that upon reaching or exceeding the maximum load of the link body deformation of the ball stud in the region of the cavities and / or partial cavities or at least one of the cavities and / or partial cavities occurs.

The suspension link is e.g. a two-point link, a three-point link or a multipoint link. Preferably, the suspension arm comprises one or two or more additional joints. The or each of the additional joints is e.g. a ball joint or a rubber mount.

Preferably, the suspension arm is installed in a chassis of a vehicle. The vehicle is preferably a motor vehicle. Advantageously, the ball stud is connected to a vehicle component, which is in particular a chassis component. For example, the chassis component is a wheel or stub axle. By means of the additional joints or the suspension arm is preferably connected to another vehicle component. The other vehicle component is e.g. a subframe or a subframe or a vehicle body. Each of the vehicle components mentioned is, in particular, a component of or a vehicle.

The invention further relates to a method for producing the ball joint and / or suspension link described above, wherein the ball socket is produced and the ball pin formed at least partially or completely as a hollow body by a generative manufacturing process, in particular made of metal, and with his ball head in the Ball socket is movably mounted.

The method can be developed in accordance with all embodiments explained in connection with the previously described ball joint and / or with the suspension link described above. Furthermore, the previously described ball joint and / or the above-described suspension link can be developed according to all embodiments explained in connection with the method.

In the additive manufacturing process, which is e.g. Also referred to as additive manufacturing, it is for example 3D printing. Preferably, the one or more stiffening elements, in particular with the formation of the partial cavities, are produced together with the ball stud by the generative manufacturing process.

Advantageously, the ball socket made of the same or of the same or of a different material than the ball stud. Preferably, the ball socket is made of plastic, which is preferably a thermoplastic material. For example, the ball socket is made of polyoxymethylene (POM), polyamide (PA) or polyetheretherketone (PEEK). Advantageously, the ball socket is designed as a bearing shell, which is in particular a spherical shell or forms. Preferably, the ball stud is mounted with its ball head slidably and / or slidably in the ball socket. Preferably, the ball pin is mounted with its ball head rotatable and / or pivotable in the ball socket. In particular, the ball pin extends out of the ball socket. Preferably, the ball socket is provided with a ball socket opening through which the ball pin extends out of the ball socket. The ball socket opening may e.g. Also referred to as a bearing shell opening or as a spherical shell opening.

According to a first alternative, the ball socket is e.g. manufactured and / or manufactured separately from the ball stud. Preferably, after the manufacture of the ball socket and the ball stud, the ball stud is mounted with its ball head movable in the ball socket. For this purpose, the ball socket is snapped in particular on the ball head of the ball stud.

According to a second alternative, the ball socket is e.g. manufactured and / or manufactured together with the ball stud by the generative manufacturing process. Preferably, the ball pin is mounted with its ball head, in particular movable, in the ball socket.

According to one embodiment, the or a joint housing is produced, in which the ball socket, in particular together with the in her, preferably movable, mounted ball head, is introduced. Advantageously, the joint housing is provided with or a pin opening through which the ball pin extends out of the joint housing. Preferably, the joint housing is made of metal or plastic, which is or is preferably reinforced with fibers. For example, the joint housing is made of aluminum, magnesium or an iron material, such as steel. Alternatively, the joint housing is made of, for example, a thermoplastic or thermosetting plastic which is preferably reinforced with fibers comprising, for example, glass fibers and / or aramid fibers and / or carbon fibers and / or basalt fibers.

According to one embodiment, the or a link body is made of a fiber-plastic composite and provided with or a Gelenkaufnahmeausnehmung. Preferably, in particular after or during the manufacture of the link body and / or after the manufacture of the ball joint, the ball socket is introduced into the Gelenkaufnahmeausnehmung together with the ball pin mounted in it and / or the ball joint, in particular with its ball socket and / or with its joint housing , For example, the joint housing is made before or during the manufacture of the handlebar body. The fiber-plastic composite comprises e.g. a matrix with fibers embedded therein. These fibers include e.g. Glass fibers and / or aramid fibers and / or carbon fibers and / or basalt fibers. For example, the fibers are short fibers and / or long fibers and / or continuous fibers. The matrix is or is preferably formed from a thermoplastic or thermosetting plastic or resin or synthetic resin.

According to one embodiment, the handlebar body is or will be assigned a maximum load. Preferably, the strength of the ball stud is reduced by the cavity or cavities and / or partial cavities such that deformation of the ball stud in the region of or cavities and / or partial cavities or at least one in the loaded state of the handlebar when reaching or exceeding the maximum load of the handlebar body the cavities and / or partial cavities occurs.

• 1 eine perspektivische Ansicht eines Fahrwerklenkers mit einem Kugelgelenk gemäß einer ersten Ausführungsform,
• 2 einen Längsschnitt durch einen Kugelzapfen des Kugelgelenks nach 1,
• 3 eine schematische Darstellung zur Veranschaulichung eines Verfahrens zur Herstellung des Kugelgelenks nach 1,
• 4 eine schematische Darstellung zur Veranschaulichung eines alternativen Verfahrens zur Herstellung des Kugelgelenks nach 1,
• 5 einen Längsschnitt durch einen Kugelzapfen für ein Kugelgelenk gemäß einer zweiten Ausführungsform und
• 6 einen Längsschnitt durch einen Kugelzapfens für ein Kugelgelenk gemäß einer dritten Ausführungsform.

The invention will be described below with reference to several embodiments with reference to the drawing. In the drawing show:

• 1 a perspective view of a suspension arm with a ball joint according to a first embodiment,
• 2 a longitudinal section through a ball stud of the ball joint after 1 .
• 3 a schematic representation for illustrating a method for producing the ball joint according to 1 .
• 4 a schematic representation for illustrating an alternative method for producing the ball joint according to 1 .
• 5 a longitudinal section through a ball pin for a ball joint according to a second embodiment and
• 6 a longitudinal section through a ball pin for a ball joint according to a third embodiment.

Out 1 is a perspective view of a suspension arm 1 it can be seen, a ball joint 2 according to a first embodiment and the ball joint 2 receiving handlebar body 3 made of fiber composite material. The suspension handlebar 1 forms a three-point link with two arms 4 and 5 , at the free ends of each a rubber bearing 6 respectively. 7 is provided. The poor 4 and 5 go at their ends opposite the free ends in a transition area 8th into each other, in which the ball joint 2 is provided. The poor 4 and 5 as well as the transition area 8th are through the handlebar body 3 educated.

In 1 is the suspension handlebar 1 in the area of the ball joint 2 shown cut, which is a ball head 9 (please refer 2 ) comprehensive ball stud 10 as well as a joint housing 11 in which the ball stud 10 with his ball head 9 with the interposition of a ball socket 12 in the form of a spherical shell (see 3 ) is movably mounted. The joint housing 11 is with a pin opening 13 provided, through which passes the ball stud 10 from the joint housing 11 extends out.

2 shows a longitudinal section through the ball stud 10 , one rigid with the ball head 9 connected pins 14 which points in the direction of a through the center 15 of the ball head 9 run pin longitudinal axis 16 from the ball head 9 extends away. The ball stud 10 is designed as a hollow body and has in the ball head 9 a, in particular free, spherical ball-head cavity 17 on. In the cone 14 is an elongated journal cavity 18 provided by stiffening elements 19 into several partial cavities 32 is divided. Here are some of the stiffening elements 19 transverse and other oblique to the journal longitudinal axis 16 , The cavities 17 and 18 as well as the stiffening elements 19 are from a ball stud wall 20 enclosed, with respect to the journal longitudinal axis 16 is rotationally symmetric and the outer shape of the ball stud 10 certainly. Furthermore, the stiffening elements 19 through the material of the ball stud 10 educated.

Out 3 is a schematic representation illustrating a method for producing the ball joint 2 seen. First, in the steps 21 and 22 the ball stud 10 produced by a generative manufacturing process in the form of 3D printing, using a printhead 23 first the ball head 9 and then the pin 14 with the stiffening elements 19 made of metal. The cavities 17 and 18 as well as the partial cavities 32 be trained with it. step 21 shows the partially manufactured ball head 9 , and step 22 shows the ball head 9 with partly made pin 14 ,

Separately from the ball stud 10 becomes the ball cup 12 made in step 24 in the direction of the arrow 25 on the ball head 9 is snapped so that this to form a ball joint assembly 26 movable in the ball cup 12 is stored. The ball joint assembly 26 is in 3 shown and includes the spherical shell 12 as well as with his ball head 9 movable in the ball cup 12 mounted ball studs 10 ,

Furthermore, the joint housing 11 made into which the ball joint assembly 26 with her ball cup 12 under formation of the ball joint 2 is introduced. Also, the handlebar body 3 made of a fiber-plastic composite and having a Gelenkaufnahmeausnehmung 27 provided, in which the ball joint 2 with his joint housing 11 is introduced. In addition, the rubber bearings 6 and 7 at the ends of the handlebar arms 4 and 5 provided so that the suspension handlebar 1 according to 1 results.

Out 4 is a schematic representation illustrating an alternative method for producing the ball joint 2 seen. First, in the steps 28 and 29 the ball stud 10 and the ball cup 12 forming a ball joint assembly 26 produced by a generative manufacturing process in the form of 3D printing. It is by means of a print head 23 first the ball head 9 and then the pin 14 with the stiffening elements 19 made of metal. The cavities 17 and 18 as well as the partial cavities 32 be trained with it. Further, with a printhead 30 the spherical shell 12 made of plastic, or whereby, preferably simultaneously, the ball head 9 , in particular movable, in the spherical shell 12 is stored. step 28 shows the partially manufactured ball head 9 together with the manufactured ball cup 12 , and step 29 shows the ball head sitting in the ball socket 9 with partly made pin 14 , The ball joint assembly thus formed 26 is in 4 shown and includes the spherical shell 12 as well as with his ball head 9 movable in the ball cup 12 mounted ball studs 10 ,

Furthermore, the joint housing 11 made into which the ball joint assembly 26 with her ball cup 12 under formation of the ball joint 2 is introduced. Also, the handlebar body 3 made of a fiber-plastic composite and having a Gelenkaufnahmeausnehmung 27 provided, in which the ball joint 2 with his joint housing 11 is introduced. In addition, the rubber bearings 6 and 7 at the ends of the handlebar arms 4 and 5 provided so that the suspension handlebar 1 according to 1 results. That related to 4 explained method can be related to 3 replace explained procedure.

Out 5 is a longitudinal section through a ball stud 10 for a ball and socket joint according to a second embodiment, identical or similar features to the first embodiment being denoted by the same reference numerals as in the first embodiment. In contrast to the first embodiment, in particular intersecting, stiffening elements 31 additionally in the cavity 17 of the ball head 9 provided through which the cavity 17 into several partial cavities 33 is divided. Furthermore, the stiffening elements form 19 and or 31 a truss structure. In particular, the cavity 18 cylindrical. Apart from these differences, the second embodiment is consistent with the first embodiment, so that reference is made to the description of the first embodiment for further description of the second embodiment. Further, the ball stud according to the second embodiment can be manufactured in the same way as the ball stud according to the first embodiment, but in addition, the stiffening elements 31 in the ball head 9 getting produced. In particular, the ball stud according to the second embodiment can replace the ball stud according to the first embodiment.

Out 6 is a longitudinal section through a ball stud 10 for a ball joint according to a third embodiment, wherein identical or similar features to the first embodiment are denoted by the same reference numerals as in the first embodiment. In contrast to the first embodiment is in the pin 14 only a free cavity 18 provided in the free cavity 17 of the ball head 9 passes. In particular, there are no stiffening elements in the pin 14 intended. The cavity 18 is preferably cylindrical. Apart from these differences, the third embodiment is the same as the first embodiment, so that reference is made to the description of the first embodiment for further description of the third embodiment. Further, the ball stud according to the third embodiment can be manufactured in the same way as the ball stud according to the first embodiment, however, without the production of the stiffening elements. In particular, the ball stud according to the third embodiment can replace the ball stud according to the first embodiment.

LIST OF REFERENCE NUMBERS

1

suspension arm

2

ball joint

3

Handlebar body of the suspension arm

4

control arm

5

control arm

6

Rubber bearing

7

Rubber bearing

8th

Transition region of the handlebar body

9

Ball head of ball stud

10

ball pin

11

joint housing

12

Ball socket / ball cup

13

Pintle opening of the joint housing

14

Spigot of ball stud

15

Center of the ball head

16

Journal longitudinal axis of the ball stud

17

Cavity in the ball head / ball-head cavity

18

Cavity in the journal / journal cavity

19

Stiffening element in the pin

20

Kugelzapfenwandung

21

Step: Production of the ball head

22

Step: Making the pin

23

Printhead for producing the ball stud

24

Step: Snap the ball cup onto the ball head

25

Arrow: Snapping the ball cup onto the ball head

26

Ball joint assembly

27

Gelenkaufnahmeausnehmung

28

Step: Production of the ball head and the ball cup

29

Step: Making the pin

30

Printhead for the production of the ball socket

31

Stiffening element in the ball head

32

Partial cavity in the journal

33

Partial cavity in the ball head

Claims (14)

Ball joint for a suspension arm, with a ball socket (12) and a ball head (9) and a rigidly connected to this pin (14) comprehensive ball stud (10) formed as a one-piece, metallic body and with its ball head (9) movable in the ball socket (12) is mounted, wherein the ball pin (10) at least partially or completely formed as a hollow body, characterized in that in the ball stud (10) one or more stiffening elements (19) are provided, through which at least one cavity (18 ) or a plurality of cavities (17, 18) in or in each case in a plurality of sub-cavities (32, 33) is divided or are. After ball joint Claim 1 , characterized in that in the ball head (9) is provided a spherical ball-head cavity (17). After ball joint Claim 1 or 2 , characterized in that in the pin (14) an elongated pin hollow space (18) is provided. Ball joint after the Claims 2 and 3 , characterized in that the ball-head cavity (17) merges into the journal cavity (18). Ball joint according to one of the preceding claims, characterized in that the one or more stiffening elements (19) is or are part of the one-piece body. Ball joint according to one of the preceding claims, characterized in that a truss structure is formed by the stiffening elements (19). Ball joint according to one of the preceding claims, characterized in that the ball socket (12) consists of a different material than the ball stud (10). Ball joint according to one of the preceding claims, characterized by a joint housing (11) into which the ball socket (12) is introduced. Bogie with a ball joint according to one of the preceding claims and a consisting of a fiber-plastic composite and a Gelenkaufnahmeausnehmung comprehensive handlebar body, in which the ball joint is introduced. Method for producing a ball joint according to one of Claims 1 to 8th or a suspension link Claim 9 characterized in that the ball socket (12) is produced and the at least partially or completely formed as a hollow body ball pin (10) made by a generative manufacturing process of metal and with its ball head (9) in the ball socket (12) is movably mounted, wherein in the ball stud (10) one or more stiffening elements (19 ), by which at least one cavity (18) or a plurality of cavities (18) is or are divided into or in each case into a plurality of partial cavities (32). Method according to Claim 10 , characterized in that the ball socket (12) is made together with the ball stud (10) by the generative manufacturing process. Method according to Claim 10 or 11 , characterized in that the one or more stiffening elements (19) are produced together with the ball stud (10) by the generative manufacturing process. Method according to one of Claims 10 to 12 , characterized in that the link body (3) is made of a fiber-plastic composite and provided with the Gelenkaufnahmeausnehmung (27) and the ball joint (2) in the Gelenkaufnahmeausnehmung (27) is introduced. Method according to Claim 13 , characterized in that the handlebar body (3) is assigned a maximum load and the strength of the ball stud (10) through the or the cavities (18) or partial cavities (32) is reduced such that in the loaded state of the suspension arm (1) at Achieving or exceeding the maximum load of the link body (3) a deformation of the ball stud in the region of the cavities (18) or partial cavities (32) or at least one of the cavities (17, 18) or partial cavities (32, 33) occurs.

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