Multipodegelenk

Abstract

Multipod joint (1) with an outer joint part (2) with a first longitudinal axis (3) and a cavity (4) running parallel to the first longitudinal axis (3) with an open end (5), wherein in the outer joint part (2) at least two recesses (7) running parallel to the first longitudinal axis (3) are formed distributed along a circumferential direction (6) extending around the first longitudinal axis (3), and an inner joint part (8) with a second longitudinal axis (9), comprising at least one central body (10) on which two pins (11) are formed, with pin axes (12) extending radially from the second longitudinal axis (9), wherein on each pin (11) a roller body (13) is arranged which can rotate at least about the pin axis (12).

Description

[0001] The present invention relates to a multipod joint comprising an outer joint part and an inner joint part with a central body having at least two integrally formed pins. A roller body is arranged on each of the pins. Furthermore, the invention relates to a motor vehicle having such a multipod joint.

[0002] The multipod joint is, in particular, a bipod joint with exactly two pivots, which are then offset by 180 degrees, i.e., molded onto the central body relative to each other. Alternatively, the multipod joint is a tripod joint with exactly three pivots, which are then molded onto the central body relative to each other, each offset by 120 degrees. The following explanations apply, taking into account the different number of pivots, to all such joint types.

[0003] Tripod joints of this type, for example, regularly comprise an outer joint part with a first longitudinal axis and a hollow space running parallel to the first longitudinal axis with an open end, wherein three recesses running parallel to the first longitudinal axis are formed in the outer joint part. The tripod joint further comprises an inner joint part with a second longitudinal axis, comprising at least one central body onto which three pins are formed, with pin axes extending radially from the second longitudinal axis. A roller body is arranged on each of the pins, which has at least one outer ring and an inner ring rotatable about a common axis of rotation, as well as bearing bodies arranged between the outer ring and inner ring. Each roller body is movably received in a recess along the first longitudinal axis.

[0004] To assemble the multipod joint with the pins and roller bodies arranged on them, the inner joint part can be pushed through the open end into the cavity of the outer joint part.

[0005] The central body can form a shaft itself or be connected to a shaft, for example via a spline.

[0006] The inner joint part can be displaced relative to the outer joint part along the first longitudinal axis and can be bent relative to the outer joint part by a flexion angle. The flexion angle is the smallest angle between the first and second longitudinal axes. When the joint is extended, the flexion angle is zero degrees. When the joint is flexed, the flexion angle is greater than zero degrees.

[0007] Tripod joints have been manufactured and marketed by the applicant for some time, for example, under the name AAR tripod joints. They are used primarily in motor vehicle side shafts, which serve, for example, as the drive connection between a differential gear and the drive wheels. So-called constant velocity fixed ball joints are typically used on the wheel side, and the AAR tripod joints mentioned here are used as plunging joints on the differential gear. The AAR tripod joints are specifically designed for articulation angles of the order of 23 degrees to 26 degrees (or less).

[0008] In a subtype of the AAR tripod joint, the AARi tripod joint, the inner ring is cylindrical towards the journal and the inner ring is fixed to the outer ring opposite the direction along the axis of rotation by retaining rings.

[0009] The journal contacts the bearing bodies or the inner ring of the roller body via so-called sliding surfaces (contact surfaces), which are particularly designed in the shape of spherical segments. These sliding surfaces are aligned in a circumferential direction around the second longitudinal axis, so that a torque acting around the longitudinal axes of the joint, i.e., in a circumferential direction around the first longitudinal axis, is transmitted via the sliding surfaces of the journal to the roller body and from the roller body to the recesses (or vice versa).

[0010] A roller body rolls along designated raceways and can thus be displaced within the recess along the first longitudinal axis. Each recess thus has two opposing raceways on which the roller body can be supported relative to a circumferential direction extending around the first longitudinal axis. Contact surfaces can be provided between these raceways of a recess, on which the roller body can be supported if necessary.

[0011] During the operation of a motor vehicle, for example, different conditions can occur on a sideshaft, which extends essentially parallel to a motor vehicle axle and via which a wheel can be driven by a drive unit. In traction mode, the wheel is driven by the drive unit. In overrun mode, the motor vehicle is towed by the vehicle's in-motion mass. For a tripod joint mounted on the sideshaft, the contact between the pins and the roller bodies, or between the roller bodies and the recesses, differs under certain conditions.

[0012] If, for example, the motor vehicle is moving forward during operation, the direction of rotation of the sideshaft remains constant. When changing between overrun and pull operation, the contact between the sliding surfaces of the pin and the roller body or between the roller body and the recesses changes (i.e. from one side to the other), e.g. viewed in a cross-section that runs transversely to the first longitudinal axis and / or to the second longitudinal axis. Even if the motor vehicle changes its direction of travel (from forward to reverse), the contact between the pin and roller body or between the roller body and the recess changes to the other side of the pin or recess, viewed in the circumferential direction.

[0013] Basically, the side of the sliding surfaces or the recess on which the contacts (which transmit the torque) are located is called the “active side” and the other side of the sliding surfaces or the recesses, on which the contacts are not located, is called the “passive side”.

[0014] When a motor vehicle is in towing operation, i.e. when the motor vehicle is driven by a drive unit, the pin makes contact with one of the sliding surfaces against the roller body, and the roller body in particular with one side of the recesses (active side). When the motor vehicle is in overrun or coasting operation (both known as coasting), i.e. when drive torques are introduced from the wheel and the drive unit is still connected (overrun operation) or decoupled (coasting operation), the pin makes contact with the other of the sliding surfaces against the roller body, and the roller body in particular with the other side of the recesses (active side). During overrun or coasting operation, the direction of the introduced torques and the direction of rotation of the joint are opposite to one another; during towing operation, they are in the same direction.

[0015] The properties of a multipod joint are defined in particular by a so-called ACFG value (Axial Cyclic Force Generation, unwanted axial forces generated by the joint). This value is expressed as the root mean square of the force, with the unit Newton root mean square [Nrms]. The value varies depending on the joint's flexion angle, whereby the value progression can be defined or determined for each joint depending on the flexion angle. The application range of the joint is thus limited by a maximum flexion angle at which the ACFG value does not exceed a value still considered permissible.

[0016] In addition, with multipod joints, the movement of the roller body during joint operation must be monitored. For example, the roller body can contact the recess on the passive side, especially when the joint is operated at a bending angle greater than zero. This contact can generate noise, but also friction losses, and can also cause wear on the roller body and / or the recess, which can actually limit the service life of the joint.

[0017] To control the movement of the roller body, it is known, for example, that the contact surfaces described above can be provided in the recesses, i.e. along the circumferential direction between the raceways of a recess. This can limit tilting of the roller body (about a so-called tilt or pitch axis - also referred to below as the first pivot axis). However, contact between the contact surface and the roller body also generates noise and friction losses. Tilting of the roller body about a so-called roll axis, which extends transversely to the extent of the respective recess, should also be controlled, because this can lead to contact between the roller body and the raceway or recess on the passive side.

[0018] A tripod joint is known, for example, from the subsequently published DE 10 2023 117 277 A1.

[0019] DE 10 2008 030 151 A1 is directed to a tripod joint for a motor vehicle.

[0020] US 2007 / 0 135 219 A1 is directed to a tripod joint.

[0021] DE 101 95 950 B3 describes a constant velocity joint.

[0022] The present invention is based on the object of at least partially solving the problems described with reference to the prior art.

[0023] In particular, a multipod joint should be proposed, which reduces the ACFG forces and prevents contact between the roller body and the recess on a passive side. Furthermore, contact between the roller body and the contact surfaces of the recess should be prevented wherever possible.

[0024] These objects are achieved with a multipod joint according to the features of patent claim 1. Further advantageous embodiments are specified in the dependent claims. It should be noted that the features listed individually in the dependent claims can be combined with one another in any technologically expedient manner and define further embodiments of the invention. Furthermore, the features specified in the claims are further specified and explained in the description, with further preferred embodiments of the invention being presented.

[0025] A multipod joint is proposed, with • an outer joint part with a first longitudinal axis and a cavity running parallel to the first longitudinal axis with an open end, wherein in the outer joint part, along a circumferential direction extending around the first longitudinal axis, at least two (in particular exactly two or exactly three, possibly more) recesses running parallel to the first longitudinal axis are distributed, and • an inner joint part with a second longitudinal axis, comprising at least one central body on which at least two (in particular exactly two or exactly three, possibly more) pins are formed with pin axes extending radially from the second longitudinal axis, wherein a roller body which is rotatable at least about the pin axis is arranged on each pin.

[0026] Each roller body (in particular an outer ring of the roller body) extends in a ring shape around an axis of rotation of the roller body.

[0027] Each roller body is movably received in the recesses along the first longitudinal axis. Each recess has two raceways opposite one another in the circumferential direction. Each raceway has a first section and a second section along a radial direction running transversely to the first longitudinal axis. When a torque directed in the circumferential direction is transmitted (during normal operation of the joint), the roller body (in particular the outer ring) is supported on one of the two raceways via a plurality of contact points relative to the circumferential direction. In this case, an instantaneous center of gravity for the roller body (by a first contact point and a second contact point, if applicable) can only be achieved via contact points (on the roller body or the outer ring or on the raceway) in the first section (of the raceway).by an additional fourth contact point) and at least one (third) contact point in the second section only supports a rotation of the roller body around the instantaneous pole.

[0028] Alternatively or additionally, this property of the multipod joint can also be described as follows: Each roller body is movably received in the recesses along the first longitudinal axis. Each recess has two raceways opposite one another in the circumferential direction. Each raceway has a first section and a second section along a radial direction running transversely to the first longitudinal axis. When a torque directed in the circumferential direction is transmitted (during normal operation of the joint), the roller body (in particular the outer ring) is supported on one of the two raceways via a plurality of contact points (these form in particular an instantaneous center) relative to the circumferential direction. The roller body contacts the raceway in the first section via at least two contact points (either exactly two or exactly three contact points, a first contact point, a second contact point, if applicable).a fourth contact point) and in the second section via at least or exactly one (third) contact point (this or these only allow support of a rotation of the roller body around the instantaneous pole).

[0029] The raceway sections are arranged adjacent to each other along a radial direction (or, in the case of a straight joint arrangement, along a direction parallel to the axis of rotation or the journal axis). If necessary, an additional section without a special function can also be provided between the sections (e.g., only to space the first section from the second section).

[0030] Each roller body extends in a ring around a rotational axis of the roller body. Each roller body has, in particular, a first region and a second region along the rotational axis. The regions are arranged adjacent to one another along the rotational axis. If necessary, a further region without a special function can also be provided between the regions (e.g., only for spacing the first region from the second region). The first and second regions are each characterized in particular by a special contour of an outer peripheral surface of the roller body.

[0031] The roller body comprises, in particular, (exclusively) an outer ring and an inner ring, which are rotatable relative to one another. These can, in particular, be in direct contact with one another. Alternatively, additional bearing bodies (rolling elements, e.g., needle-shaped rolling elements) are arranged between the inner ring and the outer ring. These (in particular cylindrical) bearing bodies are arranged in an installation space of the inner ring or the outer ring. A plurality of these bearing bodies are arranged along the circumferential direction around the axis of rotation. The bearing bodies are secured against displacement along the axis of rotation, in particular by means of retaining rings arranged in a respective groove on the outer ring.

[0032] The rotation of the inner ring relative to the outer ring enables the roller body to roll along the recesses or raceways in the outer joint part, so that the inner joint part can be displaced along the first longitudinal axis relative to the outer joint part.

[0033] When the inner part of the joint is bent relative to the outer part of the joint, the roller bodies are guided further through the raceways, whereby at least the pins are pivoted relative to the roller bodies.

[0034] In particular, the roller bodies are guided through the recesses in such a way that pivoting of the roller bodies relative to the recesses is not possible or is limited as much as possible (i.e., in particular, pivoting about a first pivot axis and / or about a second pivot axis does not occur).

[0035] Alternatively, when the inner part of the joint is bent, the roller bodies are also pivoted relative to the recesses.

[0036] In particular, in addition to the relative rotation, the inner ring and the outer ring can also (only) perform a relative displacement relative to each other along the common axis of rotation. For example, a displacement of the inner ring toward the second longitudinal axis can be limited by a retaining ring; alternatively, no limitation is provided. In particular, a displacement of the inner ring relative to the outer ring away from the second longitudinal axis is limited by a retaining ring.

[0037] In particular, the outer ring forms (precisely or only) a first stop with the inner ring, which limits displacement of the inner ring relative to the outer ring along the axis of rotation and away from the second longitudinal axis. In particular, this first stop is formed by a projection on the outer ring or on the inner ring, against which the inner ring or the outer ring abuts when the inner ring has been displaced to its maximum. The inner ring can therefore only be displaced along this direction, i.e. along the axis of rotation (in particular away from the second longitudinal axis), until the stop surfaces make contact. In the other direction along the axis of rotation (i.e. towards the second longitudinal axis), the inner ring can be displaced indefinitely, at least relative to the outer ring, but not relative to the journal, in particular during normal operation.

[0038] Especially in the case of a bipod joint (with only two pins), no stop can be provided between the outer ring and the inner ring, so that the inner ring can be moved indefinitely relative to the outer ring along the axis of rotation.

[0039] The starting point or zero point for the displacement is in particular the position of the inner ring when the joint is not flexed (i.e. coaxial arrangement of the longitudinal axes of the outer and inner joint parts) starting from the PCR1, i.e. the PCR of the inner joint part. From there, at least the largest part of the movement of the inner joint part (corresponds to the ROM, i.e. the displacement path of the respective pin starting from the PCR1 along the axis of rotation away from the second longitudinal axis) is made possible by the possible displacement path towards the first stop. If the inner ring contacts the outer ring at the first stop before reaching the maximum flexion angle, the further movement of the inner joint part, in particular up to the maximum flexion angle, which is (only) reached during assembly of the joint, can be absorbed by the play of the respective roller body in the respective recess on the outer joint part.

[0040] At least when the rotational axis and the journal axis are arranged coaxially, the inner ring forms (exactly or only) a second stop with the journal. The second stop limits any displacement of the inner ring along the journal axis toward the second longitudinal axis. During intended operation, i.e., when the inner joint part is arranged together with the outer joint part to form a multipod joint, the displacement of the inner ring relative to the journal along the journal axis away from the second longitudinal axis is unlimited, i.e., limited only by the first stop. In particular, the outer ring is supported on the recesses, so that the first stop then prevents any further displacement of the inner joint part.

[0041] The first stop can be used to limit any displacement of the inner ring during coastal operation (thrust and sailing operation).

[0042] The second stop can be used to control any displacement of the inner ring during traction operation.

[0043] In particular, the first stop is arranged along the axis of rotation on a first side of the bearing body pointing towards the second longitudinal axis or on a second side of the bearing body pointing away from the second longitudinal axis.

[0044] If the first stop is arranged along the axis of rotation on a first side of the bearing body pointing towards the second longitudinal axis, it can be formed in particular by a projection of the inner ring which extends along a radial direction away from the axis of rotation and at least partially over the outer ring.

[0045] If the first stop is arranged along the axis of rotation on a second side of the bearing body pointing away from the second longitudinal axis, it can be formed in particular by a projection of the outer ring which extends inwards along a radial direction towards the axis of rotation and at least partially over the inner ring.

[0046] In particular, the first stop is formed by the outer ring itself or by a retaining ring arranged on the outer ring. The retaining ring can be designed, for example, in the manner of a so-called snap ring. The retaining ring can be arranged in a circumferential groove on the outer ring and protrude from the groove so that the retaining ring contacts the inner ring when the inner ring is displaced sufficiently far along the rotational axis and away from the second longitudinal axis.

[0047] A retaining ring, or the groove required for it, requires additional space, so the roller body may need to be larger. On the other hand, the outer ring can be manufactured more cost-effectively by using a retaining ring instead of a projection formed on the outer ring.

[0048] In particular, an installation space for the bearing bodies on the outer ring is delimited by a retaining ring arranged on the outer ring. In particular, the installation space is delimited by a retaining ring on both sides of the bearing bodies, i.e., on the first side toward the second longitudinal axis and on the second side facing away from the second longitudinal axis.

[0049] In particular, the inner ring has a stepped shape in a cross-section (running transversely to the second longitudinal axis), so that a contact surface of the inner ring that interacts with the bearing body is offset outwardly (i.e., away from the second longitudinal axis) along the axis of rotation relative to an end surface of the inner ring. The end surface of the inner ring is, in particular, the innermost surface of the inner ring (inwardly along the axis of rotation, i.e., toward the second longitudinal axis).

[0050] The stepped shape can comprise sections that run at right angles to each other or sections that run at an angle to each other.

[0051] The retaining ring is particularly slotted so that it can be elastically deformed for installation in the groove of the outer ring.

[0052] In particular, the second stop can be formed by a retaining ring arranged in a groove on the outer ring.

[0053] The intended operation of the multipod joint (also referred to as a joint) includes, in particular, that the inner and outer joint parts are arranged relative to each other as intended for the specific application. For example, all roller bodies are arranged in the recesses and the joint is only operated within a specific range of the articulation angle, e.g., between zero and 30 degrees or between zero and 26 degrees. Furthermore, the torques considered permissible for the joint are transmitted between the outer and inner joint parts, and displacement of the roller bodies along the first longitudinal axis occurs only to a certain extent.

[0054] Improper operation includes, for example, the assembly of the joint or the assembly of joint parts, such as the arrangement of the roller bodies on the journals.

[0055] In particular, each roller body is supported via a plurality of contact points on (only) one of the two raceways (i.e., on the so-called active side). Preferably, (at least) three contact points are provided.

[0056] Each raceway has a first section and a second section, in particular along a radial direction running transversely to the first longitudinal axis. The sections are arranged adjacent to one another along the radial direction. If necessary, a further section without a special function can also be provided between the sections (e.g. only to space the first section from the second section). The first and second sections are each characterized in particular by a special and thereby different shape of a raceway surface. The surface of each raceway is designed to be constant, in particular along the first longitudinal axis (at least in the area over which the roller bodies travel during intended operation).

[0057] In particular, the contact points are all located in a cross-section that runs transversely to the first longitudinal axis.

[0058] In particular, the contact points are arranged spaced apart from one another along a radial direction which runs transversely to the first longitudinal axis.

[0059] In particular, an instantaneous pole for the roller body is formed only via (i.e. exclusively via) these contact points in the first section.

[0060] In the first section, exactly two contact points (the first contact point and the second contact point) or even more than two contact points can be provided. This additional contact point, referred to below as the fourth contact point, is then arranged along the radial direction between the first contact point and the second contact point. The second contact point is arranged, in particular, along the radial direction between the first contact point and the third contact point (in the second section).

[0061] An instantaneous pole is a fundamentally well-known abstraction used in kinematics, which is used, for example, in transmission technology, robotics and in the design of wheel guides in automobiles.

[0062] In the case of a rigid body moving in a plane, an instantaneous center of gravity is the point in space around which the body can be considered and treated as rotating only at the instant (time, infinitesimal). The velocity at the instantaneous center of gravity is zero at the instant under consideration, or would be if the rigid body extended to the instantaneous center of gravity. In particular, the instantaneous center of gravity is formed by the intersection of the surface normal of the first contact point with the surface normal of the second contact point. In particular, a surface normal of a fourth contact point (if present) also extends through the instantaneous center of gravity.

[0063] The roller body (or the outer ring of the roller body) contacts the raceway in the first section on the active side via the contact points (of the first area). The instantaneous center of rotation requires that the contact points form a pivot joint with a joint axis (the instantaneous center of rotation) around which the roller body or outer ring can pivot.

[0064] In particular, the instantaneous center of rotation is formed at any given time only by the contact points in the first section. The first section and the second section of the respective track are fixed (due to the shape or contour of the track), i.e., unchangeable. This means, in particular, that the instantaneous center of rotation is always formed only by the contact points in the first section, while the rotation around the instantaneous center is always supported by the contact point in the second section.

[0065] The location of the contact points is therefore always defined or determined by the specific design of the career path.

[0066] However, at least (in particular exactly) one contact point is provided in the second section, at which the roller body is supported in such a way that rotation (pivoting) around the instantaneous pole is just not possible (i.e. when transmitting a torque and corresponding contacting of the raceway on the active side).

[0067] In particular, the contact points are arranged along the journal axis or along the radial direction such that, on the active side, a rotation of the roller body or the outer ring about the instantaneous center can always be supported via the contact point arranged in the second section, at least during the intended operation of the multipod joint.

[0068] In particular, the contact points of the first section define or stabilize a position of the roller body or outer ring along the radial direction (relative to the recess or raceway, i.e., relative to the outer joint part). Stabilized means, in particular, that the roller body is always automatically returned to this position (particularly due to the existing torque and the contacting surfaces of the roller body and raceway).

[0069] In particular, the contact points of the first section (also) control, i.e., reduce, or prevent, any pivoting (so-called tilting or pitching) of the roller body (or outer ring) about a first pivot axis (tilting or pitch axis) running transversely to the rotational axis and transversely to the raceways. This can, in particular, prevent contact between the roller body or outer ring and the contact surface (in the recess, along the circumferential direction) between the raceways.

[0070] In particular, the at least one contact point of the second section controls, i.e., in particular, reduces or prevents, pivoting (a so-called rolling movement) of the roller body (or outer ring) about a second pivot axis (rolling axis) running transversely to the axis of rotation and parallel to the raceways. This can, in particular, prevent contact between the roller body or outer ring and the raceway on the passive side.

[0071] In particular, the special design of raceways and roller bodies prevents contact between the roller body and the outer joint part at other (unintended) contact points (on the otherwise usual contact surfaces or on the passive side). This can reduce or prevent the ACFG value, as well as unwanted noise.

[0072] In particular, in a proper operation of the joint and starting from a non-pivoted arrangement of the rolling body in the recess (i.e. with an extended arrangement of the joint), a pivoting about the first pivot axis can be limited to an amount of at most 10 angular degrees, in particular of at most 5 angular degrees, preferably of at most 3 angular degrees, particularly preferably of at most one (1) angular degree, or even completely suppressed (pivoting by zero angular degrees).

[0073] In particular, in a proper operation of the joint and starting from a non-pivoted arrangement of the rolling body in the recess (i.e. with an extended arrangement of the joint), a pivoting about the second pivot axis can be limited to an amount of at most 5 angular degrees, in particular of at most 3 angular degrees, preferably of at most 2 angular degrees, particularly preferably of at most one (1) angular degree, or even completely suppressed (pivoting by zero angular degrees).

[0074] In particular, the roller body is supported (during normal operation of the joint) via exactly three contact points of the raceway, wherein the instantaneous pole is formed only by a first contact point and a second contact point, which are arranged in the first section, wherein a third contact point, which is arranged in the second section, only supports the rotation of the roller body about the instantaneous pole.

[0075] In particular, during normal operation of the multipod joint, each roller body contacts the respective recess at any given time only via the majority of contact points, preferably only via the first, second and third contact points (if necessary also via the fourth contact point), on the respective one raceway.

[0076] In particular, the raceways and the roller body are designed such that, in an extended arrangement of the multipod joint, i.e. when the longitudinal axes are aligned coaxially to one another (the articulation angle is then zero angular degrees), the contact points are arranged at a respective distance from the journal axis, wherein the distances deviate from one another by a maximum of 10%, in particular a maximum of 5%, preferably a maximum of 2% or even a maximum of 1% of the smallest distance (and in particular are all the same size). In particular, a (fourth) distance of the fourth contact point, if present, can have a greater deviation. In particular, the (fourth) distance of the fourth contact point is greater than the distances of the other contact points.

[0077] If the distances are as equal as possible, sliding friction between the roller body and the raceway at the contact points can be minimized as much as possible (when the roller body rolls on the raceway).

[0078] In particular, the raceways and the roller body are designed such that, in an extended arrangement of the multipod joint, i.e. when the longitudinal axes are aligned coaxially with one another, and in a cross-section extending transversely to the longitudinal axes, at each contact point, a surface normal to the surface of the roller body has a contact angle between the surface normal and a tangential direction extending transversely to the journal axis and the longitudinal axis. A contact angle of the (first and second) contact points forming the instantaneous center of rotation is each at least five degrees, in particular at least 8 degrees, preferably at least 10 degrees. Preferably, a contact angle of the (first and second) contact points forming the instantaneous center of rotation is at most 45 degrees, preferably at most 30 degrees, particularly preferably at most 20 degrees.

[0079] In particular, a fourth contact angle of a fourth contact point, if present, is smaller than the contact angles of the first contact point and the second contact point. In particular, the fourth contact angle is zero.

[0080] In particular, the contact angles of the (first and second) contact points forming the instantaneous pole are either equal or different in magnitude. In particular, they differ from each other by one to 10 degrees, preferably by one to 5 degrees.

[0081] In particular, the first contact angle is greater than the second contact angle, wherein the second contact angle is arranged along the radial direction between the first contact angle and the third contact angle. In particular, the first contact angle is oriented differently than the second contact angle and (if the third contact angle is not equal to zero) the third contact angle. In particular, the sum of the second contact angle and the third contact angle deviates from the value of the first contact angle by at most 10 angular degrees, preferably by at most 5 angular degrees, particularly preferably by at most 2 angular degrees, or in particular corresponds to the value of the first contact angle.

[0082] In particular, the contact angle of the (third) contact point, which only supports the rotation of the roller body around the instantaneous pole, is smaller than the contact angles of the (first and second) contact points forming the instantaneous pole. In particular, the contact angle of this (third) contact point is at most 10 degrees, preferably at most 5 degrees, particularly preferably at most 2 degrees, or even zero degrees.

[0083] In particular, the contact angle of the (third) contact point, which only supports the rotation of the roller body around the instantaneous pole, has an amount of less than one angular degree.

[0084] In particular, the raceway in the first section, which contacts the contact points or has the (first and second) contact points that form the instantaneous center of rotation for the roller body, has a Gothic shape in a cross-section extending transversely to the first longitudinal axis (i.e., it is constructed as a pointed arch composed of two circular arcs). If a fourth contact point is provided, it is arranged along the radial direction between the first contact point and the second contact point. The raceway can have a different shape, for example, between the pointed arches.

[0085] The first contour and the shape of the raceway are designed in particular such that a specific ratio exists between a distance between the (first and second) contact points in the first section and a difference between the (first, second, and fourth) distances. The ratio is formed by the distance (or its unsigned value, in millimeters) between the first contact point and the second contact point parallel to the axis of rotation (with the joint extended) and the difference (or its unsigned value, in millimeters) between the smaller of the first distance (of the first contact point) and the second distance (of the second contact point) as well as the fourth distance (of the fourth contact point).

[0086] The following applies to the distance: Distance=first contact point−second contact point

[0087] The difference applies if the first distance is the smaller distance: Difference=fourth distance−first distance or, if the second distance is the smaller distance: Difference=fourth distance−second distance

[0088] The following applies to the ratio: Ratio=Distance / Difference

[0089] The ratio is in particular more than 1.5; preferably between 4 and 1.5, particularly preferably between 2.5 and 1.5.

[0090] The circular arcs can, in particular, have the same or different radii. The (first and second) contact points between the roller body and the raceway then lie on the circular arcs or the flanks of the pointed arc. Depending on the (first and second) contact angle or the shape of the pointed arc or the shape of the circular arcs, the (first and second) contact points are arranged at the same distance from the journal axis or at different distances from the journal axis.

[0091] In particular, the raceway in the second section, which contacts the (third) contact point, which only supports the rotation of the roller body about the instantaneous center, has a rectilinear, concave (i.e. curved away from the roller body) or convex (i.e. curved towards the roller body) shape in a cross-section extending transversely to the first longitudinal axis. If the second sections are rectilinear, the shapes run in particular parallel to one another in the cross-section, alternatively also inclined to one another - and thereby opening or closing towards the second longitudinal axis. In a parallel arrangement, the shapes can also run in the cross-section (in an extended arrangement of the joint) inclined to the axis of rotation or pin axis.

[0092] In particular, the roller body has, in a cross-section which encompasses the axis of rotation, in a first region a first contour of an outer circumferential surface comprising the (first, second and optionally fourth) contact points and, in a second region, a second contour of the outer circumferential surface comprising at least one (third) contact point.

[0093] The first contour can be formed by one or more radii or have a curved profile. For example, the first contour can have a first curvature (defined by at least one radius) at the first contact point and a second curvature of the same or different type (defined by at least one radius) at the second contact point. In particular, the first contour can also have other profiles, possibly even straight lines, between the curved profiles at the contact points.

[0094] In particular, the first contour is formed by a first radius (i.e., spherical) and the second contour by a second radius (i.e., spherical or elliptical). In particular, the radii are either different or equal to each other.

[0095] In particular, the second radius is larger than the first radius, in particular by a factor of at least 1.1 or at least 1.2 (i.e. second radius = factor x first radius).

[0096] Alternatively, the radii are the same size.

[0097] If the radii are of equal size, the two raceways of a recess contacted by the roller body can be designed differently from each other, so that the arrangement of the first section and the second section in the raceways is different.

[0098] In particular, a PCR1 of the inner joint part and a PCR2 of the outer joint part are arranged along a radial direction between the instantaneous center of rotation and the at least one third contact point. The respective PCR is the pitch circle radius of the respective joint part.

[0099] The definition of the pitch circle radius (PCR) is generally known, especially for multipod joints.

[0100] The pitch circle radius of the pivots or inner joint part (PCR1) is the so-called effective radius. This is defined for an extended joint, i.e., the longitudinal axes are arranged coaxially to each other. The effective radius defines the lever arm of the force resultant when transmitting a torque. The pitch circle radius of the pivots or inner joint part is therefore the radius, starting from the second longitudinal axis of the inner joint part, on which, for example, the centers of the spherical segment-shaped sliding surfaces of the pivot are located when the joint is extended.

[0101] The pitch circle radius of the outer joint part (PCR2) or the recesses is also the so-called effective radius, which is defined for a straight joint, i.e., the longitudinal axes are arranged coaxially to each other. The effective radius defines the lever arm of the force resultant when transmitting a torque.

[0102] Furthermore, a motor vehicle with at least one multipod joint according to the invention is also claimed here.

[0103] The use of indefinite articles ("a," "an," "one," and "another"), particularly in the patent claims and the description reproducing them, is to be understood as such and not as a numeral. Terms or components introduced accordingly are therefore to be understood as appearing at least once and, in particular, as being able to appear multiple times.

[0104] As a precaution, it should be noted that the numerals used here ("first", "second", ...) primarily serve (only) to distinguish between several similar objects, quantities, or processes, and therefore do not necessarily prescribe any interdependence and / or sequence of these objects, quantities, or processes. Should a dependence and / or sequence be necessary, this is explicitly stated here or will be obvious to the person skilled in the art upon studying the specifically described embodiment. To the extent that a component can occur multiple times ("at least one"), the description of one of these components can apply equally to all or part of the majority of these components, but this is not mandatory.

[0105] The invention and the technical environment are explained in more detail below with reference to the accompanying figures. It should be noted that the invention is not intended to be limited by the exemplary embodiments cited. In particular, the features described with regard to a particular joint type (bipod joint or tripod joint) are also transferable to other joint types (e.g., to the other of a bipod joint and a tripod joint). It should be noted in particular that the figures, and in particular the proportions depicted, are only schematic. They show: Fig. 1: a detail of a cross-section of a first embodiment of a tripod joint; Fig. 2: a detail of a cross-section of the first embodiment of a tripod joint; Fig. 3: a second embodiment of a tripod joint in a cross-section, in an extended state; Fig. 4: the tripod joint after Fig. 3 in a downward bent position; Fig. 5: the tripod joint after Fig. 3 and Fig. 4 in an upwardly bent position; Fig. 6: the tripod joint after Fig. 3 to 5 in a position bent to the left; Fig. 7: the tripod joint after Fig. 3 to 6 in a position bent to the right; Fig. 8: a detail of a cross-section of a third embodiment of a tripod joint; Fig. 9: a detail of a cross-section of a fourth embodiment of a tripod joint; Fig. 10: a detail of a cross-section of a fifth embodiment of a tripod joint; Fig. 11: the detail of the first variant of a tripod joint according to Fig. 2; Fig. 12: a detail of a cross-section of a sixth embodiment of a tripod joint; Fig. 13: a detail of a cross-section of a seventh embodiment of a tripod joint; Fig. 14: a detail of a cross-section of an eighth variant of a tripod joint; Fig. 15: a detail of a cross-section of a ninth embodiment of a tripod joint; Fig. 16: a detail of a cross-section of a tenth embodiment of a tripod joint; Fig. 17: a detail of a cross-section of an eleventh variant of a tripod joint; Fig. 18: a detail of a cross-section of a twelfth embodiment of a tripod joint; Fig. 19: a detail of a cross-section of a thirteenth embodiment of a tripod joint; Fig. 20: a detail of a cross-section of a fourteenth embodiment of a tripod joint; Fig. 21: a detail of a cross-section of a fifteenth embodiment of a tripod joint; Fig. 22: a detail of a cross-section of a sixteenth embodiment of a tripod joint; Fig. 23: a detail of a cross-section of a seventeenth embodiment of a tripod joint; Fig. 24: a detail of a cross-section of a bipod joint; Fig. 25: the tripod joint according to the second embodiment in the extended state in a side view in section; and Fig. 26: the tripod joint according to Fig. 25 in a bent state.

[0106] Fig. 1 shows a detail of a cross-section of a first embodiment of a tripod joint 1. Fig. 2 shows a detail of a cross-section of the first embodiment of a tripod joint 1. Fig. 3 shows a second embodiment of a tripod joint 1 in a cross section, in an extended state. Fig. 4 shows the tripod joint 1 after Fig. 3 in a downward bent position. Fig. 5 shows the tripod joint 1 after Fig. 3 and Fig. 4 in an upward bent position. Fig. 6 shows the tripod joint 1 after Fig. 3 to 5 in a position bent to the left. Fig. 7 shows the tripod joint 1 after Fig. 3 to 6 in a position bent to the right. The Fig. 1 to 7 are described together below.

[0107] The tripod joint 1 comprises an outer joint part 2 with a first longitudinal axis 3 and a cavity 4 running parallel to the first longitudinal axis 3 with an open end 5, wherein in the outer joint part 2, along a circumferential direction 6 extending around the first longitudinal axis 3, three recesses 7 running parallel to the first longitudinal axis 3 are formed, distributed. The tripod joint 1 further comprises an inner joint part 8 with a second longitudinal axis 9. The inner joint part 8 comprises a central body 10, on which three pins 11 are formed, with pin axes 12 extending radially from the second longitudinal axis 9, wherein on each pin 11 there is arranged a roller body 13 which can rotate at least about the pin axis 12.

[0108] Each roller body 13 extends in a ring around a rotation axis 14 of the roller body 13.

[0109] Each roller body 13 is movably received in a recess 7 along the first longitudinal axis 3. Each recess 7 has two raceways 17, 18 opposite one another in the circumferential direction 6. Each raceway 17, 18 has a first section 15 and a second section 16 along a radial direction 37 running transversely to the first longitudinal axis 3. When a torque directed in the circumferential direction 6 is transmitted, the roller body 13 is supported with the outer ring 39 relative to the circumferential direction 6 via a plurality of contact points 19, 20, 21 on one of the two raceways 17, 18. In this case, an instantaneous pole 22 for the roller body 13 is formed only via contact points 19, 20 (on one of the raceways 17, 18) in the first section 15, and at least one contact point 21 in the second section 16 only supports a rotation of the roller body 13 about the instantaneous pole 22.

[0110] Each roller body 13 extends in a ring around a rotational axis 14 of the roller body 13. Each roller body 13 has a first region 44 and a second region 45 along the rotational axis 14. The regions 44, 45 are arranged adjacent to one another along the rotational axis 14. Between the regions 44, 45, a further region without a special function is provided (e.g., only for spacing the first region 44 from the second region 45 or for forming the transition between the regions 44, 45). The first region 44 and the second region 45 are each characterized by a special contour 31, 32 of an outer circumferential surface of the roller body 13.

[0111] The roller body 13 comprises an outer ring 39 and an inner ring 40, which are rotatable relative to one another. For this purpose, bearing bodies 41 (rolling elements, here needle-shaped rolling elements) are arranged between the inner ring 40 and the outer ring 39. These bearing bodies 41 are arranged in an installation space of the outer ring 39, wherein the installation space is delimited relative to the direction of the axis of rotation 14 by retaining rings 46. A plurality of these bearing bodies 41 are arranged along the circumferential direction 6 around the axis of rotation 14. The bearing bodies 41 are secured against displacement along the axis of rotation 14 by the retaining rings 46, which are arranged in a respective groove on the outer ring 39.

[0112] The rotation of the inner ring 40 relative to the outer ring 39 enables the roller body 13 to roll along the recesses 7 or raceways 17, 18 in the outer joint part 2, so that the inner joint part 8 can be displaced along the first longitudinal axis 3 relative to the outer joint part 2.

[0113] When the inner joint part 8 is bent relative to the outer joint part 2, the roller bodies 13 are guided further through the raceways 17, 18, whereby at least the pins 11 are pivoted relative to the roller bodies 13.

[0114] The roller bodies 13 are guided through the recesses 7 in such a way that pivoting of the roller bodies 13 relative to the recesses 7 is not or hardly possible.

[0115] In addition to the relative rotation, the inner ring 40 and the outer ring 39 can also perform a relative displacement along the common rotation axis 14. For example, a displacement of the inner ring 40 toward the second longitudinal axis 9 can be limited by a retaining ring 46 (see, for example, Fig. 8), alternatively no limitation is provided (see e.g. Fig. 1 to 7). Displacement of the inner ring 40 relative to the outer ring 39 away from the second longitudinal axis 9 is limited by a retaining ring 46.

[0116] The outer ring 39 forms a first stop 47 with the inner ring 40 (precisely or only) via the retaining ring 46, which limits any displacement of the inner ring 40 relative to the outer ring 39 along the axis of rotation 14 and away from the second longitudinal axis 9. This first stop 47 is formed by a projection (the retaining ring 46) on the outer ring 39, against which the inner ring 40 abuts when the inner ring 40 has been displaced to the maximum extent away from the second longitudinal axis 9. The inner ring 40 can therefore only be displaced along this direction, i.e. along the axis of rotation 14 (away from the second longitudinal axis 9), until the stop surfaces make contact. In the other direction along the axis of rotation 14 (i.e. towards the second longitudinal axis 9), the inner ring 40 can, during normal operation, be displaced indefinitely, at least relative to the outer ring 39, but not relative to the pin 11.

[0117] The starting point or zero point for the displacement is the position of the inner ring 40 when the joint 1 is not bent (i.e. coaxial arrangement of the longitudinal axes 3, 9 of the outer joint part 2 and the inner joint part 8, see Fig. 3) starting from the PCR1 35, i.e. the PCR of the inner joint part 8. From there, at least the largest part of the movement of the inner joint part 8 (corresponds to the ROM, i.e. the displacement path of the respective pin 11 starting from the PCR1 35 along the rotation axis 14 away from the second longitudinal axis 9) is made possible by the possible displacement path towards the first stop 47. Should the inner ring 40 contact the outer ring 39 at the first stop 47 before reaching the maximum bending angle 52, the further movement of the inner joint part 8, in particular up to the maximum bending angle 52, which is (only) reached during assembly of the joint 1, can be absorbed by the play of the respective roller body 13 in the respective recess 7 on the outer joint part 2.

[0118] At least when the rotational axis 14 and the journal axis 12 are arranged coaxially, the inner ring 40 forms (exactly or only) a second stop 48 with the journal 11. The second stop 48 limits a displacement of the inner ring 40 along the journal axis 12 towards the second longitudinal axis 9. During intended operation, i.e. when the inner joint part 8 is arranged together with the outer joint part 2 to form the tripod joint 1, the displacement of the inner ring 40 relative to the journal 11 along the journal axis 12 away from the second longitudinal axis 9 is unlimited, i.e. limited only by the first stop 47. The outer ring 39 is supported on the recesses 7 or the raceways 17, 18, so that the first stop 47 then prevents further displacement of the inner joint part 8.

[0119] The first stop 47 can limit the displacement of the inner ring 40 during coastal operation (thrust and sailing operation).

[0120] The second stop 48 can be used to control any displacement of the inner ring 40 during traction operation.

[0121] The first stop 47 is arranged along the rotation axis 14 on a second side of the bearing body 41 pointing away from the second longitudinal axis 9.

[0122] The first stop 47 is formed by a retaining ring 46 arranged on the outer ring 39. The retaining ring 46 is designed in the manner of a so-called snap ring. The retaining ring 46 is arranged in a circumferential groove on the outer ring 39 and protrudes from the groove, so that the retaining ring 46 contacts the inner ring 40 when the latter is displaced sufficiently far along the rotational axis 14 and away from the second longitudinal axis 9.

[0123] The installation space for the bearing bodies 41 on the outer ring 39 is delimited by a retaining ring 46 arranged on the outer ring 39. The installation space is delimited on both sides of the bearing bodies 41, i.e., towards the second longitudinal axis 9 on the first side and on the second side facing away from the second longitudinal axis 9, by a retaining ring 46.

[0124] Each roller body 13 is supported on one of the two raceways 17, 18 (i.e., on the so-called active side) via a plurality of contact points 19, 20, 21. Three contact points 19, 20, 21 are provided.

[0125] Each raceway 17, 18 has a first section 15 and a second section 16 along a radial direction 37 running transversely to the first longitudinal axis 3. The sections 15, 16 are arranged adjacent to one another along the radial direction 37. Between the sections 15, 16, a further section without a special function is provided (e.g., only for spacing the first section 15 from the second section 16 or for forming the transition between the sections 15, 16). The first section 15 and the second section 16 are each characterized by a special shape of a surface of the raceway 17, 18. The surface of each raceway 17, 18 is constant along the first longitudinal axis 3 (at least in the area over which the roller bodies 13 travel during intended operation).

[0126] The contact points 19, 20, 21 all lie in a cross-section that runs transversely to the first longitudinal axis 3. The contact points 19, 20, 21 are arranged spaced apart from one another along the radial direction 37, which runs transversely to the first longitudinal axis 3. An instantaneous pole 22 for the roller body 13 is formed only above (i.e., exclusively above) contact points 19, 20 in the first section 15. The instantaneous pole 22 is formed by the intersection of the surface normal 26 of the first contact point 19 with the surface normal 26 of the second contact point 20.

[0127] In the case of a planar motion of a rigid body (here, the roller body 13 or the outer ring 39), an instantaneous center of mass 22 is the point in space around which the body can be considered and treated as rotating only at the instant (time, infinitesimal) (because it is pressed against the contour of the raceway 17, 18 due to the torque). The velocity at the instantaneous center of mass is zero at the instant under consideration.

[0128] The roller body 13 (or the outer ring 39 of the roller body 13) contacts the first raceway 17 in the first section 15 on the active side via the contact points 19, 20 (of the first region 44). The instantaneous pole 22 requires that the contact points 19, 20 form a rotary joint with a joint axis (the instantaneous pole 22) about which the roller body 13 or the outer ring 39 is or would be pivotable.

[0129] However, exactly one third contact point 21 is provided in the second section 16, at which the roller body 13 is supported in such a way that rotation (pivoting) around the instantaneous pole 22 is just not possible.

[0130] The instantaneous center of rotation 22 is formed at any given time only by the contact points 19, 20 in the first section 15. The first section 15 and the second section 16 of the respective track 17, 18 are fixed, i.e., unchangeable. This means that the instantaneous center of rotation 22 is always formed only by the contact points 19, 20 in the first section 15, while the rotation about the instantaneous center of rotation 22 is always supported by the third contact point 21 in the second section 16.

[0131] Thus, the position of contact points 19, 20, 21 is always defined or determined by the special design of track 17, 18.

[0132] The contact points 19, 20, 21 are arranged along the journal axis 12 or along the radial direction 37 such that, on the active side, a rotation of the roller body 13 or the outer ring 39 about the instantaneous pole 22 can always be supported via the third contact point 21 arranged in the second section 16, at least during the intended operation of the tripod joint 1.

[0133] A position of the roller body 13 or the outer ring 39 along the radial direction 37 (relative to the recess 7 or the raceway 17, 18, i.e., relative to the outer joint part 2) is defined or stabilized via the contact points 19, 20 of the first section 15. Stabilized means that the roller body 13 is always automatically shifted back to this position (due to the shape of the first section 15, the respective area 44, 45, and the prevailing torque transmitted between the outer joint part 2 and the inner joint part 8).

[0134] The contact points 19, 20 of the first section 15 also control, i.e., in particular, reduce or prevent, any pivoting of the roller body 13 (or outer ring 39) about a first pivot axis 42 extending transversely to the rotational axis 14 and transversely to the raceways 17, 18. This prevents contact between the roller body 13 or outer ring 39 and the contact surface of the outer joint part 2 (in the recess 7, along the circumferential direction 6 between the raceways 17, 18).

[0135] Via the third contact point 21 of the second section 16, a pivoting of the roller body 13 (or the outer ring 39) about a second pivot axis 43 running transversely to the axis of rotation 14 and parallel to the raceways 17, 18 (see Fig. 25 and Fig. 26) is controlled, i.e., in particular, reduced or prevented. This prevents contact between the roller body 13 or outer ring 39 and the raceway 17, 18 on the passive side.

[0136] The special design of raceways 17, 18 and roller bodies 13 or outer ring 39 prevents contact between the roller body 13 and the outer joint part 2 at other (unintended) contact points (on the otherwise usual contact surfaces or on the passive side). This also allows unwanted noise to be reduced or prevented by the ACFG value.

[0137] The roller body 13 is supported (during normal operation of the joint 1) via exactly three contact points 19, 20, 21 of the respective contacted raceway 17, 18 (i.e. only on the active side), wherein the instantaneous pole 22 is formed only by a first contact point 19 and a second contact point 20, which are arranged in the first section 15, wherein a third contact point 21, which is arranged in the second section 16, only supports the rotation of the roller body 13 about the instantaneous pole 22.

[0138] During normal operation of the tripod joint 1, each roller body 13 contacts the respective recess 7 at any given time only via the majority of contact points 19, 20, 21, i.e. only via the first contact point 19, the second contact point 20 and the third contact point 21, on the respective one raceway 17, 18.

[0139] The raceways 17, 18 and the roller body 13 are designed in such a way that when the tripod joint 1 is in an extended arrangement (see Fig. 2, Fig. 3, Fig. 26), i.e. when the longitudinal axes 3, 9 are aligned coaxially with each other (the bending angle 52 is then zero angular degrees), the contact points 19, 20, 21 are arranged at a respective distance (first distance 23, second distance 24, third distance 25) from the pin axis 12, wherein the distances 23, 24, 25 deviate from each other by a maximum of 1% of the largest distance 23, 24, 25.

[0140] If the distances 23, 24, 25 are of equal size, sliding friction between the roller body 13 and the raceway 17, 18 at the contact points 19, 20, 21 can be minimized (when the roller body 13 rolls on the raceway 17, 18).

[0141] The raceways 17, 18 and the roller body 13 are designed such that, in an extended arrangement of the tripod joint 1, i.e. when the longitudinal axes 3, 9 are aligned coaxially with one another, and in a cross-section extending transversely to the longitudinal axes 3, 9, at each contact point 19, 20, 21, a surface normal 26 to the surface of the roller body 13 has a contact angle (first contact angle 27, second contact angle 28, third contact angle 29) between the surface normal 26 and a tangential direction 30 extending transversely to the journal axis 12 and the longitudinal axis 3, 9. A contact angle 27, 28 of the contact points 19, 20 forming the instantaneous pole 22 is approximately 10 degrees each.

[0142] The contact angles 27, 28 of the contact points forming the instantaneous pole 22 are each equal in magnitude (see Fig. 1 and Fig. 2) or varying in amount (e.g. Fig. 19 and Fig. 20).

[0143] The third contact angle 29 of the third contact point 21, which only supports the rotation of the roller body 13 around the instantaneous pole 22, is smaller than the contact angles 27, 28 of the contact points 19, 20 forming the instantaneous pole 22. The third contact angle 29 of this third contact point 21 is zero angle degrees (see Fig. 1 to 7). However, it can also be about 5 degrees (see Fig. 19, Fig. 21, Fig. 22).

[0144] The raceway 17, 18 has in the first section 15, which contacts the contact points 19, 20 or has the contact points 19, 20 which form the instantaneous pole 22 for the roller body 13, a gothic shape in a cross section extending transversely to the first longitudinal axis 3 (i.e. it is constructed as a pointed arch made up of two circular arcs, see e.g. Fig. 3 to 7). The circular arcs can also have such a large radius, possibly infinite, that a conical shape is present (see e.g. Fig. 1 and Fig. 2)

[0145] The circular arcs can have the same or different radii. The contact points 19, 20 between the roller body 13 and the raceway 17, 18 lie on the circular arcs or the flanks of the pointed arc. Depending on the contact angle 27, 28, or the shape of the pointed arc, or the shape of the circular arcs, the contact points 19, 20 are arranged at the same distance 23, 24 from the journal axis 12 or at different distances 23, 24 from the journal axis 12.

[0146] The raceway 17, 18 has in the second section 16, which contacts the third contact point 21, which only supports the rotation of the roller body 13 about the instantaneous pole 22, a straight ( Fig. 3 to 7), concave (i.e. curved away from the roller body 13; see Fig. 1 and Fig. 2) or convex (i.e. curved towards the roller body 13, see Fig. 13) form. If the second sections 16 are designed in a straight line, the shapes run in particular parallel to each other in the cross section (see 3 to 7 and 22), alternatively also inclined to each other - and thereby opening towards the second longitudinal axis 9 (see Fig. 19) or closing (see Fig. 21)).

[0147] The roller body 13 has, in a cross-section encompassing the rotational axis 14, a first contour 31 of an outer circumferential surface in a first region 44, comprising the contact points 19, 20, and a second contour 32 of the outer circumferential surface in a second region 45, comprising at least one third contact point 21. The first contour 31 is defined by a first radius 33 (i.e., spherical) and the second contour 32 by a second radius 34 (i.e., spherical - e.g., Fig. 1 to 7 - or elliptical - e.g. Fig. 3 to 7 and 20). In particular, the radii 33, 34 are either different or equal to each other.

[0148] If the radii 33, 34 are different, the second radius 34 is larger than the first radius 33 (see Fig. 3, Fig. 7 and Fig. 20).

[0149] Alternatively, the radii 33, 34 are the same size ( Fig. 1 and Fig. 2).

[0150] If the radii 33, 34 are of the same size, the two raceways 17, 18 of a recess 7, which are contacted by the roller body 13, can be designed differently from one another, so that the arrangement of the first section 15 and the second section 16 in the raceways 17, 18 is different (see e.g. Fig. 17).

[0151] A PCR1 35 of the inner joint part 8 and a PCR2 36 of the outer joint part 2 are arranged along a radial direction 37 between the instantaneous pole 22 and the at least one third contact point 21.

[0152] Fig. 8 shows a detail of a cross-section of a third embodiment of a tripod joint 1. The explanations regarding the Fig. 1 to 7 is referred to.

[0153] Here, the journal 11 is spherical and the inner ring 40 is cylindrical. The inner ring 40 is fixed to the outer ring 39 in both directions along the rotation axis 14 via the retaining rings 46 arranged in the outer ring 39.

[0154] In a cross-section encompassing the rotational axis 14, the roller body 13 has, in a first region 44, a first contour 31 of an outer circumferential surface comprising the contact points 19, 20, and, in a second region 45, a second contour 32 of the outer circumferential surface comprising at least one third contact point 21. The first contour 31 is formed by a first radius 33 (i.e., spherical) and the second contour 32 by a second radius 34 (i.e., spherical), with the radii 33, 34 being of equal size.

[0155] The raceway 17, 18 has a Gothic shape in the first section 15, which contacts the contact points 19, 20 or has the contact points 19, 20 that form the instantaneous pole 22 for the roller body 13, in a cross-section extending transversely to the first longitudinal axis 3. The circular arcs have equal radii 33, 34. The contact points 19, 20 between the roller body 13 and the raceway 17, 18 lie on the circular arcs or the flanks of the pointed arch.

[0156] The raceway 17, 18 has, in the second section 16, which contacts the third contact point 21, which only supports the rotation of the roller body 13 about the instantaneous pole 22, a rectilinear shape in a cross-section extending transversely to the first longitudinal axis 3, wherein the shapes run parallel to one another in the cross-section.

[0157] Fig. 9 shows a detail of a cross-section of a fourth embodiment of a tripod joint 1. The explanations for Fig. 8 is referred to.

[0158] In contrast to the third embodiment, the inner ring 40 has a concave, spherical sliding surface toward the journal 11. The inner ring 40 is freely movable relative to the outer ring 39 along the rotation axis 14.

[0159] Fig. 10 shows a detail of a cross-section of a fifth embodiment of a tripod joint 1. The explanations for Fig. 8 is referred to.

[0160] In contrast to the third embodiment, the inner ring 40 has a convex-shaped sliding surface towards the pin 11, wherein the pin is cylindrical.

[0161] Displacement of the inner ring 40 relative to the outer ring 39 away from and toward the second longitudinal axis 9 is limited by a respective retaining ring 46. The first stop 47 formed by the retaining ring 46 is arranged along the rotational axis 14 on a second side of the bearing body 41 facing away from the second longitudinal axis 9.

[0162] Fig. 11 shows a detail of the first embodiment of a tripod joint 1 according to Fig. 1 and Fig. 2. Regarding the comments on the Fig. 1 to 7 is referred to.

[0163] Fig. 12 shows a detail of a cross-section of a sixth embodiment of a tripod joint 1. The explanations for Fig. 11 is referred to.

[0164] In contrast to the first embodiment, the roller body 13 has, in a cross section which includes the axis of rotation 14, in a second region 45, a second contour 32 of the outer circumferential surface which includes at least one third contact point 21 and which is elliptically shaped.

[0165] Fig. 13 shows a detail of a cross-section of a seventh embodiment of a tripod joint 1. The explanations to Fig. 12 is referred to.

[0166] In contrast to the sixth embodiment, the raceway 17, 18 in the second section 16, which contacts the third contact point 21, which only supports the rotation of the roller body 13 about the instantaneous pole 22, has a convex shape (i.e. a shape curved towards the roller body 13) in a cross section extending transversely to the first longitudinal axis 3.

[0167] Fig. 14 shows a detail of a cross-section of an eighth embodiment of a tripod joint 1. The explanations regarding the Fig. 1 to 7 is referred to.

[0168] In contrast to the first embodiment, the raceway 17, 18 in the second section 16, which contacts the third contact point 21, which only supports the rotation of the roller body 13 about the instantaneous center 22, has a rectilinear shape in a cross-section extending transversely to the first longitudinal axis 3. In this cross-section, the shapes extend at an angle to one another, opening toward the second longitudinal axis 9.

[0169] In contrast to the first embodiment, the inner ring 40 has a stepped shape in a cross-section running transversely to the second longitudinal axis 9, so that a contact surface of the inner ring 40 that interacts with the bearing bodies 41 is offset outwards (i.e., away from the second longitudinal axis 9) along the axis of rotation 14 relative to an end surface of the inner ring 40. The end surface of the inner ring 40 is the innermost surface of the inner ring 40 (inwards along the axis of rotation 14, i.e., toward the second longitudinal axis 9). The stepped shape comprises sections that run at right angles to one another. In addition, the inner ring 40 is fixed to the outer ring 39 in both directions along the axis of rotation 14 by means of the retaining rings 46 arranged in the outer ring 39.

[0170] Due to the stepped shape, the inner ring 40 can be moved further along the rotation axis 14 towards the second longitudinal axis 9.

[0171] Fig. 15 shows a detail of a cross-section of a ninth embodiment of a tripod joint 1. The explanations regarding the Fig. 3 to 7 are referred to.

[0172] In contrast to the second embodiment, the raceways 17, 18 of a recess 7, which are contacted by the roller body 13, are designed differently from one another, so that the arrangement of the first section 15 and the second section 16 in the raceways 17, 18 is different or interchanged.

[0173] Fig. 16 shows a detail of a cross-section of a tenth embodiment of a tripod joint 1. The explanations to Fig. 14 is referred to.

[0174] In contrast to the eighth embodiment, the raceway 17, 18 in the second section 16, which contacts the third contact point 21, which only supports the rotation of the roller body 13 about the instantaneous pole 22, has a rectilinear shape in a cross-section extending transversely to the first longitudinal axis 3, wherein the shapes run parallel to one another.

[0175] Fig. 17 shows a detail of a cross-section of an eleventh embodiment of a tripod joint 1. The explanations to Fig. 16 is referred to.

[0176] In contrast to the tenth embodiment, the raceway 17, 18 in the second section 16, which contacts the third contact point 21, which only supports the rotation of the roller body 13 about the instantaneous pole 22, has a concave shape (i.e., a shape curved away from the roller body 13) in a cross section extending transversely to the first longitudinal axis 3.

[0177] In contrast to the tenth embodiment, the roller body 13 has, in a cross section which includes the axis of rotation 14, in a second region 45, a second contour 32 of the outer circumferential surface which includes at least one third contact point 21 and which is elliptically shaped.

[0178] Fig. 18 shows a detail of a cross-section of a twelfth embodiment of a tripod joint 1. The explanations to Fig. 17 is referred to.

[0179] In contrast to the eleventh embodiment, the raceway 17, 18 in the second section 16, which contacts the third contact point 21, which only supports the rotation of the roller body 13 about the instantaneous pole 22, has a rectilinear shape in a cross-section extending transversely to the first longitudinal axis 3, wherein the shapes of the raceways 17, 18 run parallel to one another.

[0180] Fig. 19 shows a detail of a cross-section of a thirteenth embodiment of a tripod joint 1. The explanations regarding the Fig. 16 is referred to.

[0181] In contrast to the tenth embodiment, the raceway 17, 18 in the second section 16, which contacts the third contact point 21, which only supports the rotation of the roller body 13 about the instantaneous center 22, has a rectilinear shape in a cross-section extending transversely to the first longitudinal axis 3. In this cross-section, the shapes extend at an angle to one another, opening toward the second longitudinal axis 9.

[0182] In addition, the contact angles 27, 28 of the contact points forming the instantaneous pole 22 are different in magnitude.

[0183] The third contact angle 29 of the third contact point 21, which only supports the rotation of the roller body 13 around the instantaneous pole 22, is smaller than the contact angles 27, 28 of the contact points 19, 20 forming the instantaneous pole 22. The third contact angle 29 of this third contact point 21 is approximately 5 angular degrees.

[0184] Fig. 20 shows a detail of a cross-section of a fourteenth embodiment of a tripod joint 1. The explanations to Fig. 12 is referred to.

[0185] In contrast to the sixth embodiment, the contact angles 27, 28 of the contact points 19, 20 forming the instantaneous pole 22 are different in magnitude.

[0186] As in the sixth embodiment, but unlike, for example, the thirteenth embodiment, the third contact angle 29 of the third contact point 21 is zero angular degrees.

[0187] Fig. 21 shows a detail of a cross-section of a fifteenth embodiment of a tripod joint 1. The explanations to Fig. 19 is referred to.

[0188] In contrast to the thirteenth embodiment, the shapes of the second sections 16 of the raceways 17, 18 run in a straight line and inclined to each other in the cross section, thereby closing towards the second longitudinal axis 9.

[0189] Fig. 22 shows a detail of a cross-section of a sixteenth embodiment of a tripod joint 1. The explanations to Fig. 19 and Fig. 21 is referred to.

[0190] In contrast to the thirteenth and fifteenth embodiments, the shapes of the second sections 16 of the raceways 17, 18 extend in a straight line and parallel to one another in the cross-section and, in an extended state of the tripod joint, are inclined relative to the axis of rotation 14 or pin axis 12.

[0191] Fig. 23 shows a detail of a cross-section of a seventeenth embodiment of a tripod joint 1. Reference is made to the explanations of the Fig. 1 to 7.

[0192] The raceway 17, 18 has, in the first section 15, which contacts the contact points 19, 20, 49 or has the contact points 19, 20, 49, a Gothic shape in a cross-section extending transversely to the first longitudinal axis 3 (i.e., it is constructed as a pointed arch consisting of two circular arcs). Between the circular arcs, the raceway 17, 18 has a rectilinear shape that deviates from the Gothic shape.

[0193] More than two contact points 19, 20 are provided in the first section 15. The further fourth contact point 49 is arranged along the radial direction 37 between the first contact point 19 and the second contact point 20. A surface normal 26 of the fourth contact point 49 extends through the instantaneous pole 22.

[0194] During normal operation of the multipod joint 1, each roller body 13 contacts the respective recess 7 at any given time only via the majority of the contact points 19, 20, 21, 50, i.e. only via the first, second, third and fourth contact points 19, 20, 21, 50 on the respective one raceway 17, 18.

[0195] The raceways 17, 18 and the roller body 13 are designed such that, when the tripod joint 1 is in an extended arrangement, i.e., when the longitudinal axes 3, 9 are aligned coaxially with one another (the articulation angle 52 is then zero angular degrees), the contact points 19, 20, 21 are arranged at a respective distance 23, 24, 25 from the journal axis 12, wherein the distances 23, 24, 25 deviate from one another by a maximum of 1% of the smallest (first, second, third) distance. The fourth distance 50 of the fourth contact point 49 has a greater deviation from the other distances 23, 24, 25. The fourth distance 50 of the fourth contact point 49 is greater than the distances 23, 24, 25 of the other contact points 19, 20, 21.

[0196] A fourth contact angle 51 of the fourth contact point 49 is smaller than the contact angles 27, 28 of the first contact point 19 and the second contact point 20. The fourth contact angle 51 is zero degrees.

[0197] The raceway 17, 18 has, in the second section 16, which contacts the third contact point 21, which only supports the rotation of the roller body 13 about the instantaneous pole 22, a rectilinear and mutually parallel shape in a cross-section extending transversely to the first longitudinal axis 3.

[0198] The roller body 13 has, in a cross-section encompassing the rotational axis 14, a first contour 31 of an outer circumferential surface in a first region 44, comprising the contact points 19, 20, 49, and a second contour 32 of the outer circumferential surface in a second region 45, comprising a third contact point 21. The first contour 31 is formed by a first radius 33 (i.e., spherical) and the second contour 32 by a second radius 34 (i.e., elliptical). The radii 33, 34 are designed differently from one another, with the second radius 34 being larger than the first radius 33.

[0199] The first contour 31 and the shape of the raceway 17 are designed such that a specific ratio exists between a distance 53 and a difference 54 between the distances 23, 24, 50. The ratio is formed by the distance 53 (or its unsigned value) parallel to the rotation axis 14 between the first contact point 19 and the second contact point 20 and the difference 54 (or its unsigned value) between the smaller of the first distance 23 and the second distance 24, as well as the fourth distance 50; thus, ratio = distance 53 / difference 54. The ratio is more than 1.5.

[0200] Fig. 24 shows a detail of a cross-section of a multipod joint 1 designed as a bipod joint 1. The explanations regarding the Fig. 1 to 23. Here, the journal 11, which has spherical sliding surfaces, is arranged in an inner ring 40, which has spherical contact surfaces. The inner ring 40 is freely movable relative to the outer ring 39 along the rotational axis 14.

[0201] In contrast to all other design variants, the roller body 13 comprises only an outer ring 39 and an inner ring 40. The bearing bodies 41 provided in the other design variants are not present, so that the inner ring 40 is rotatably mounted directly on the outer ring 39. However, this design without a bearing body 41 can also be implemented in other multipod joints 1 (e.g., tripod joints).

[0202] Fig. 25 shows a tripod joint 1 according to the second embodiment in a side view in section, in a motor vehicle 38 (indicated). Fig. 26 shows the tripod joint 1 after Fig. 26 in a bent state

[0203] The tripod joint 1 comprises an outer joint part 2 with a first longitudinal axis 3 and a cavity 4 running parallel to the first longitudinal axis 3 with an open end 5, wherein in the outer joint part 2, along a circumferential direction 6 extending around the first longitudinal axis 3, three recesses 7 running parallel to the first longitudinal axis 3 are formed, distributed. The tripod joint 1 further comprises an inner joint part 8 with a second longitudinal axis 9. The inner joint part 8 comprises a central body 10, on which three pins 11 are formed, with pin axes 12 extending radially from the second longitudinal axis 9, wherein on each pin 11 there is arranged a roller body 13 which can rotate at least about the pin axis 12.

[0204] Each roller body 13 extends in a ring around a rotation axis 14 of the roller body 13.

[0205] Each roller body 13 is movably received in a recess 7 along the first longitudinal axis 3. Each recess 7 has two raceways 17, 18 opposite one another in the circumferential direction 6.

[0206] The roller body 13 comprises an outer ring 39 and an inner ring 40, which are rotatable relative to one another. For this purpose, bearing bodies 41 (rolling elements, here needle-shaped rolling elements) are arranged between the inner ring 40 and the outer ring 39. These bearing bodies 41 are arranged in an installation space of the outer ring 39, wherein the installation space is delimited relative to the direction of the axis of rotation 14 by retaining rings 46. A plurality of these bearing bodies 41 are arranged along the circumferential direction 6 around the axis of rotation 14. The bearing bodies 41 are secured against displacement along the axis of rotation 14 by the retaining rings 46, which are arranged in a respective groove on the outer ring 39.

[0207] The inner joint part 8 is displaceable along the first longitudinal axis 3 relative to the outer joint part 2 and can be bent by a bending angle 52 relative to the outer joint part 2 (see Fig. 26). The flexion angle 52 is the smallest angle between the first longitudinal axis 3 and the second longitudinal axis 9. In an extended state of the joint 1, the flexion angle 52 is zero degrees (see Fig. 25). In a flexed state of joint 1, the flexion angle 52 is more than zero degrees (see Fig. 26). List of reference symbols 1 tripod joint 2 outer joint part 3 first longitudinal axis 4 cavity 5 End 6 Circumferential direction 7 Recess 8 inner joint part 9 second longitudinal axis 10 central bodies 11 cones 12 Pin axis 13 roller bodies 14 axis of rotation 15 first section 16 second section 17 first career 18 second career 19 first contact point 20 second contact point 21 third contact point 22 Instantaneous pole 23 first distance 24 second distance 25 third distance 26 surface normals 27 first contact angle 28 second contact angle 29 third contact angle 30 Tangential direction 31 first contour 32 second contour 33 first radius 34 second radius 35 pitch circle radius PCR1 (of the inner joint part) 36 pitch circle radius PCR2 (of the outer joint part) 37 radial direction 38 Motor vehicle 39 Outer ring 40 inner ring 41 bearing bodies 42 first swivel axis (tilt / pitch axis) 43 second swivel axis (roll axis) 44 first area 45 second area 46 Retaining ring 47 first attack 48 second attack 49 fourth contact point 50 fourth distance 51 fourth contact angle 52 flexion angles 53 Distance 54 Difference

Claims

[1] Multipod joint (1) with an outer joint part (2) having a first longitudinal axis (3) and a cavity (4) extending parallel to the first longitudinal axis (3) with an open end (5), wherein at least two recesses (7) extending parallel to the first longitudinal axis (3) are distributed in the outer joint part (2) along a circumferential direction (6) extending about the first longitudinal axis (3), and an inner joint part (8) with a second longitudinal axis (9), comprising at least one central body (10) on which at least two pins (11) are formed with pin axes (12) extending radially from the second longitudinal axis (9), wherein a roller body (13) rotatable at least about the pin axis (12) is arranged on each pin (11), wherein each roller body (13) extends in a ring shape about an axis of rotation (14) of the roller body (13); wherein each roller body (13) is movably received in the recesses (7) along the first longitudinal axis (3);wherein each recess (7) has two raceways (17, 18) opposite each other in the circumferential direction (6) and each raceway (17, 18) has a first section (15) and a second section (16) along a radial direction (37) extending transversely to the first longitudinal axis (3), wherein the roller body (13) is supported on one of the two raceways (17, 18) via a plurality of contact points (19, 20, 21, 49) when a torque directed in the circumferential direction (6) is transmitted relative to the circumferential direction (6), wherein only via contact points (19, 20, 49) in the first section (15) is an instantaneous center of rotation (22) for the roller body (13) formed and at least one contact point (21) in the second section (16) only supports a rotation of the roller body (13) about the instantaneous center of rotation (22); at least; a) the raceways (17, 18) and the roller body (13) are designed such that, in an extended arrangement of the multipod joint (1), i.e., when the longitudinal axes (3, 9) are aligned coaxially to each other, and in a cross-section extending transversely to the longitudinal axes (3, 9), at each contact point (19, 20, 21, 50) a surface normal (26) to the surface of the roller body (13) has a contact angle (27, 28, 29, 51) between the surface normal (26) and a tangential direction (30) extending transversely to the pivot axis (12) and to the longitudinal axis (3, 9); wherein a. a contact angle (27, 28) of the contact points (19, 20) forming the instantaneous pole (22) is at least five degrees, wherein the contact angle (29) of the contact point (21) that only supports the rotation of the roller body (13) about the instantaneous pole (22) is less than the contact angles (27, 28) of the contact points (19, 20) forming the instantaneous pole (22); or b. the contact angle (29) of the contact point (21) which only supports the rotation of the roller body (13) about the instantaneous pole (22) has a value of less than 10 degrees; or c. the instantaneous center of rotation (22) is formed by a first contact point (19) and a second contact point (20) arranged in the first section (15), wherein a third contact point (21) arranged in the second section (16) merely supports the rotation of the roller body (13) about the instantaneous center of rotation (22); wherein the sum of the second contact angle (28) of the second contact point (20) and the third contact angle (29) of the third contact point (21) differs by no more than 10 degrees from the value of the first contact angle (27) of the first contact point (19) or is equal to the value of the first contact angle (27); or b) the first section (15) of the raceway (17, 18), which contacts the contact points (19, 20) that form the instantaneous center of gravity (22) for the roller body (13), has a Gothic shape in a cross-section extending transversely to the first longitudinal axis (3); or c) the second section (16) of the recess (7), which contacts the contact point (21) that only supports the rotation of the roller body (13) about the instantaneous center of rotation (22), has a concave or convex shape in a cross-section extending transversely to the first longitudinal axis (3); or d) the roller body (13) in a cross-section which includes the axis of rotation (14) has in a first area (44) a first contour (31) of an outer circumferential surface which includes contact points (19, 20, 49) and in a second area (45) a second contour (32) of the outer circumferential surface which includes at least one contact point (21); wherein the first contour (31) is formed by at least one first radius (33) and the second contour (32) by at least one second radius (34), wherein the radii (33, 34) are different or equal in size, wherein the radii (33, 34) are equal in size and the raceways (17, 18) of a recess (7) contacted by the roller body (13) are designed differently from each other, such that the arrangement of the first section (15) and the second section (16) in the raceways (17, 18) is different. [2] Multipod joint (1) according to claim 1, wherein the roller body (13) is supported on the raceway (17, 18) via exactly three contact points (19, 20, 21), wherein the instantaneous pole (22) is formed only by a first contact point (19) and a second contact point (20) which are arranged in the first section (15), wherein a third contact point (21) which is arranged in the second section (16) only supports the rotation of the roller body (13) about the instantaneous pole (22). [3] Multipod joint (1) according to one of the preceding claims, wherein in intended operation of the multipod joint (1) each roller body (13) contacts the respective recess (7) at any time only via the majority of the contact points (19, 20, 21) on the respective raceway (17, 18). [4] Multipod joint (1) according to one of the preceding claims, wherein the raceways (17, 18) and the roller body (13) are designed such that, in an extended arrangement of the multipod joint (1), i.e. when the longitudinal axes (3, 9) are aligned coaxially to each other, the contact points (19, 20, 21, 49) are arranged at a respective distance (23, 24, 25, 50) from the pivot axis (12), wherein the distances (23, 24, 25, 50) differ from each other by no more than 10% of the smallest distance (23, 24, 25, 50). [5] Multipod joint (1) according to one of the preceding claims, wherein the raceways (17, 18) and the roller body (13) are designed such that, in an extended arrangement of the multipod joint (1), i.e., when the longitudinal axes (3, 9) are aligned coaxially to each other, and in a cross-section extending transversely to the longitudinal axes (3, 9), at each contact point (19, 20, 21, 50) a surface normal (26) to the surface of the roller body (13) has a contact angle (27, 28, 29, 51) between the surface normal (26) and a tangential direction (30) extending transversely to the pivot axis (12) and to the longitudinal axis (3, 9); wherein a contact angle (27, 28) of the contact points (19, 20) forming the instantaneous pole (22) is each at least five degrees. [6] Multipod joint (1) according to claim 5, wherein the contact angles (27, 28) of the contact points (19, 20) forming the instantaneous pole (22) are either equal in magnitude or different in magnitude. [7] Multipod joint (1) according to one of the preceding claims 5 and 6, wherein the contact angle (29) of the contact point (21) which only supports the rotation of the roller body (13) about the instantaneous pole (22) is less than the contact angles (27, 28) of the contact points (19, 20) forming the instantaneous pole (22). [8] Multipod joint (1) according to any one of the preceding claims 5 to 7, wherein the contact angle (29) of the contact point (21) which only supports the rotation of the roller body (13) about the instantaneous pole (22) has a value of less than 10 degrees. [9] Multipod joint (1) according to one of the preceding claims, wherein the first section (15) of the raceway (17, 18) which contacts the contact points (19, 20) which form the instantaneous pole (22) for the roller body (13) has a Gothic shape in a cross-section extending transversely to the first longitudinal axis (3). [10] Multipod joint (1) according to one of the preceding claims, wherein the second section (16) of the recess (7), which contacts the contact point (21) which only supports the rotation of the roller body (13) about the instantaneous pole (22), has a straight, concave or convex shape in a cross-section extending transversely to the first longitudinal axis (3). [11] Multipod joint (1) according to one of the preceding claims, wherein the roller body (13) has in a cross-section comprising the axis of rotation (14) a first contour (31) of an outer circumferential surface comprising the contact points (19, 20, 49) in a first region (44) and a second contour (32) of the outer circumferential surface comprising at least one contact point (21) in a second region (45); wherein the first contour (31) is formed by at least one first radius (33) and the second contour (32) by at least one second radius (34), wherein the radii (33, 34) are different or equal in size. [12] Multipod joint (1) according to claim 11, wherein the second radius (34) is larger than the first radius (33). [13] Multipod joint (1) according to claim 11, wherein the radii (33, 34) are of equal size and the raceways (17, 18) of a recess (7) which are contacted by the roller body (13) are designed differently from each other, so that the arrangement of the first section (15) and the second section (16) in the raceways (17, 18) is different. [14] Multipod joint (1) according to one of the preceding claims, wherein a PCR1 (35) of the inner part of the joint (8) and a PCR2 (36) of the outer part of the joint (2) is arranged along the radial direction (37) between the instantaneous pole (22) and the third contact point (21); wherein the PCR (35, 36) is the pitch circle radius. [15] Motor vehicle (38) with at least one multipod joint (1) according to claims 1 to 14.

Images