DE202020000864U1 - Ball constant velocity joint in the form of a cageless sliding joint - Google Patents

Abstract

Ball constant velocity joint (1) in the form of a cageless sliding joint, at least comprising: an axis of rotation (2); an outer joint part (3), which has a closed connection side (4), an open opening side (5) and a cavity delimited by an inner surface (6) (7), and on the inner surface (6) between the connection side (4) and the opening side (5) at least along an axial direction (8) extending outer ball tracks (9, 10); and an inner joint part (11) which is positioned in the cavity (7) of the outer joint part (3) and has connection means (12) for receiving a shaft (13) running in the direction of the opening side (5) of the outer joint part (3), and on a Outer surface (14) at least along the axial direction (8) running inner ball tracks (15, 16); whereby an outer ball track (9, 10) and an inner ball track (15, 16) each form a pair of tracks (17) with each other a ball (18) is arranged in each pair of tracks (17); wherein the outer ball tracks (9, 10) extend inwards from the opening side (5) and along the axial direction (8) to the connection side (4) in a radial direction (19).

Description

The invention relates to a constant velocity ball joint in the form of a sliding joint without a cage.

Ball-type constant velocity joints have been known for a long time. In the case of cageless joints, the control forces which act on the balls on the basis of the respective ball tracks in the inner joint part and outer joint part must be set such that the balls are adequately guided in all operating states. Dispensing with the cage makes it easier and cheaper to manufacture the joint. Furthermore, there is greater freedom in designing the joint because the movement of the balls in the individual pairs of tracks is not coupled to one another (via the cage). The ball tracks can thus be largely independent of each other.

From the US 3,002,364 , the US 3,13,431 , the US 3,298,200 as well as the US 3,338,070 Different designs of ball constant velocity joints in the form of sliding joints without a cage are known. In this case, however, ball tracks are always provided in the outer joint part, which extend outwards in a radial direction towards a connection side of the outer joint part.

• • einem Weg einer Kugel in der Kugelbahn in einer radialen Richtung (z. B. delta radiale Richtung) gegenüber
• • dem dabei zurückgelegtem Weg der Kugel in der Kugelbahn entlang der Drehachse (z. B. delta axiale Richtung);

also m = delta radiale Richtung / delta axiale Richtung.
Das Bahnsteigungsverhältnis ist negativ, wenn sich die Kugelbahn im Gelenkaußenteil hin zur Öffnungsseite in der radialen Richtung nach innen erstreckt. Das Bahnsteigungsverhältnis ist positiv, wenn sich die Kugelbahn im Gelenkaußenteil hin zur Öffnungsseite in der radialen Richtung nach außen erstreckt.A course of a ball track can be described by several parameters. One parameter is the platform ratio m. The platform ratio describes the ratio

• • opposite a path of a ball in the ball track in a radial direction (eg delta radial direction)
• • The path traveled by the ball in the ball track along the axis of rotation (eg delta axial direction);

thus m = delta radial direction / delta axial direction.
The pitch ratio is negative if the ball track in the outer joint part extends inwards towards the opening side in the radial direction. The pitch ratio is positive if the ball track in the outer joint part extends outward in the radial direction towards the opening side.

Another parameter is the PCR (Pitch Circle Radius). This denotes the radius opposite the axis of rotation on which a ball is arranged. In a stretched state of the ball constant velocity joint (that is, the axes of rotation of the outer joint part and the inner joint part are arranged coaxially to one another, that is, the ball constant velocity joint is not bent), in particular all balls are arranged on the same PCR. When the stretched ball constant velocity joint is pulled apart, ie when the balls are shifted towards the opening side, the PCR progressively decreases when the path ratio is negative.

For reasons of strength, it is generally advantageous to use an outer joint part that is closed on the connection side. The previous shape of the ball tracks in the outer joint part, i.e. starting from the opening side of the outer joint part to the connection side along an axis of rotation of the outer joint part in the radial direction to the outside (i.e. negative pitch ratio), creates an undercut in the outer joint part. However, this undercut makes it difficult to forge or mechanically process the ball tracks in the outer joint part.

The object of the present invention is to at least partially solve the problems mentioned with reference to the prior art. In particular, a ball constant velocity joint in the form of a sliding joint without a cage is to be proposed that is easier to manufacture than the ball constant velocity joints known from the prior art.

A ball constant velocity joint with the features according to claim 1 contributes to solving these problems. Advantageous further developments are the subject of the dependent claims. The features listed individually in the claims can be combined with one another in a technologically meaningful manner and can be supplemented by explanatory facts from the description and / or details from the figures, further embodiment variants of the invention being shown.

• • eine Drehachse;
• • ein Gelenkaußenteil, das eine geschlossen ausgeführte Anschlussseite, eine offene Öffnungsseite und einen von einer Innenfläche begrenzten Hohlraum hat, sowie sich auf der Innenfläche zwischen der Anschlussseite und der Öffnungsseite zumindest entlang einer axialen Richtung verlaufende äußere Kugelbahnen; sowie
• • ein Gelenkinnenteil, welches im Hohlraum des Gelenkaußenteils positioniert ist und Anschlussmittel zur Aufnahme einer in Richtung der Öffnungsseite des Gelenkaußenteils verlaufenden Welle aufweist, sowie sich auf einer Außenfläche zumindest entlang der axialen Richtung verlaufende innere Kugelbahnen;

wobei jeweils eine äußere Kugelbahn und eine innere Kugelbahn ein Bahnpaar miteinander bilden; wobei jeweils eine Kugel in jedem Bahnpaar angeordnet ist; wobei die äußeren Kugelbahnen ausgehend von der Öffnungsseite und entlang der axialen Richtung hin zur Anschlussseite in einer radialen Richtung nach innen verlaufen.A ball constant velocity joint in the form of a cageless sliding joint is proposed, at least comprising:

• • an axis of rotation;
• An outer joint part which has a closed connection side, an open opening side and a cavity delimited by an inner surface, and outer ball tracks which run at least along an axial direction on the inner surface between the connection side and the opening side; such as
• An inner joint part which is positioned in the cavity of the outer joint part and has connecting means for receiving a shaft running in the direction of the opening side of the outer joint part, and inner ball tracks running on an outer surface at least along the axial direction;

an outer ball track and an inner ball track forming a pair of tracks with each other; one ball being arranged in each pair of tracks; the outer ball tracks extending inwards from the opening side and along the axial direction to the connection side in a radial direction.

In particular, the path gradient ratio is positive for all balls and all outer ball paths, ie m> zero.

The constant velocity ball joint is a sliding joint, i. H. the inner joint part is displaceable in the axial direction relative to the outer joint part. The displacement path is at least 3 mm [millimeters] in each direction, starting from the position of the inner joint part and outer joint part, in which the balls lie in a central plane of the joint. The total displacement is therefore at least 6 mm. In particular, the total displacement is at least 10 mm.

In particular, in the stretched state of the ball constant velocity joint, if all balls are arranged in the center plane of the joint, all balls are on the same PCR, i. H. the balls are all arranged at the same distance from the axis of rotation in their respective ball track. If the ball constant velocity joint is pulled apart, i.e. if the balls are moved towards the opening side, the PCR increases (the same for each ball) because the path ratio is positive.

In particular, all outer ball tracks are oriented identically, i. H. they run inwards from the opening side and along the axial direction to the connection side in a radial direction. In particular, the outer ball tracks run continuously inwards, so they always have a positive pitch ratio.

In particular, the outer joint part has no undercut, that is to say no local widening in the radial direction starting from the opening side and towards the connection side.

In particular, all inner ball tracks are oriented identically, i. H. they run outwards from the opening side and along the axial direction to the connection side in a radial direction.

The course of the outer ball tracks is particularly easy to produce, especially when the outer joint parts are closed on the connection side, because the material of the outer joint part can be displaced in the direction of the cavity (e.g. by forging or broaching, etc.).

The outer joint part is in particular only open on the opening side, i. that is, the inner joint part can only be inserted into the cavity of the outer joint part via the opening side. Furthermore, this means in particular that the outer ball tracks towards the connection side are formed only by the inner surface of the outer joint part. In particular, there are no openings between the cavity and the surroundings of the outer joint part through a wall of the outer joint part (except on the opening side). The ball tracks extend from the opening side to the connection side.

In particular, the constant velocity ball joint has six, eight or ten pairs of tracks.

In particular, the outer ball tracks extend in the radial direction along an outer tilt angle which is (constantly) inclined with respect to the axis of rotation in the radial direction.

In particular, the outer tilt angle is between 10 and 25 degrees, preferably between 13 and 21 degrees, particularly preferably between 15 and 19 degrees.

In particular, the outer joint part has outer first ball tracks and outer second ball tracks, which are arranged alternately along a circumferential direction. The outer first ball tracks additionally extend in a circumferential direction along an outer first inclination angle which is inclined in the circumferential direction with respect to the axis of rotation. The outer second ball tracks additionally extend in a circumferential direction along an outer second inclination angle that is inclined in the circumferential direction with respect to the axis of rotation. The outer first angle of inclination and the outer second angle of inclination extend in mutually opposite circumferential directions.

In particular, the outer angles of inclination are between 3 and 15 degrees, preferably between 5 and 13 degrees, particularly preferably between 7 and 11 degrees.

In particular, the outer first inclination angles and the outer second inclination angles have the same angular amounts (only opposite orientations).

In particular, the inner ball tracks extend outward from the opening side and along the axial direction to the connection side in the radial direction.

In particular, the inner ball tracks extend in the radial direction along an inner tilt angle that is inclined with respect to the axis of rotation in the radial direction.

In particular, the inner tilt angle is between 10 and 25 degrees, preferably between 13 and 21 degrees, particularly preferably between 15 and 19 degrees.

In particular, the inner tilt angles and the outer tilt angles have the same angular amounts (only opposite orientations).

In particular, the inner joint part has inner first ball tracks and inner second ball tracks, which are arranged alternately along a circumferential direction. In particular, the inner first ball tracks additionally extend in a circumferential direction along an inner first inclination angle which is inclined with respect to the axis of rotation in the circumferential direction; wherein the inner second ball tracks additionally extend in a circumferential direction along an inner second inclination angle which is inclined in the circumferential direction with respect to the axis of rotation. The inner first angle of inclination and the inner second angle of inclination extend in opposite circumferential directions.

In particular, the inner angles of inclination are between 3 and 15 degrees, preferably between 5 and 13 degrees, particularly preferably between 7 and 11 degrees.

In particular, the inner first inclination angles and the inner second inclination angles have the same angular amounts (only opposite orientations).

In particular, all angles of inclination of the ball tracks of the ball constant velocity joint have the same angular amounts.

In particular, the inner ball track and the outer ball track of a pair of tracks each additionally extend in a circumferential direction along an inclination angle that is inclined in the circumferential direction with respect to the axis of rotation. The inner ball track extends along an inner angle of inclination which is inclined in the circumferential direction with respect to the axis of rotation and the outer ball track extends along an outer angle of inclination which is inclined in the circumferential direction with respect to the axis of rotation. The inner angle of inclination and the outer angle of inclination are inclined in opposite directions with respect to the axis of rotation.

In particular, at least two inner ball tracks arranged adjacent to each other or two outer ball tracks arranged adjacent to each other extend parallel to a central plane, the central plane encompassing the axis of rotation and extending along the radial direction relative to the circumferential direction centrally between the ball tracks. In particular, this regulation applies to all pairs of inner ball tracks and / or outer ball tracks of the constant velocity ball joint. In this case, only two specific ball tracks arranged adjacent to each other form the respective pair of ball tracks.

In particular, simpler manufacture can be achieved in this way. In particular, such. B. simultaneous machining of two ball tracks with a broaching tool, since the movement of the tools relative to the inner joint part or the outer joint part takes place parallel to one another.

The constant velocity ball joint can be used in particular for the transmission of torques in motor vehicles or drive trains of motor vehicles.

The constant velocity ball joint can, for. B. due to the lack of a cage and the favorable structural design inexpensive to produce. In particular, the constant velocity ball joint has a low component weight, so that it can be made less solid due to its closed design on the connection side.

As a precaution, it should be noted that the numerals used here ("first", "second", ...) serve primarily (only) to distinguish between several similar objects, sizes or processes, in particular, no dependency and / or order of these objects, sizes or mandate processes to each other. If a dependency and / or sequence is required, this is explicitly stated here or it is evident for the person skilled in the art to study the specifically described configuration. If a component can occur more than once ("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.

The use of indefinite articles ("a", "a", "one" and "one"), especially in the claims and the description reflecting them, is to be understood as such and not as a numerical word. Terms and components introduced accordingly are to be understood in such a way that they are present at least once and in particular can also be present more than once.

• 1: ein Gelenkaußenteil eines Kugelgleichlaufgelenks in einer Seitenansicht im Schnitt;
• 2: ein Kugelgleichlaufgelenk mit einem Gelenkinnenteil und dem Gelenkaußenteil nach 1, in einer Ansicht entlang der Drehachse;
• 3: das Gelenkinnenteil nach 2 in einer Draufsicht;
• 4: das Gelenkinnenteil nach 2 und 3 in einer Ansicht entlang der Drehachse;
• 5: das Gelenkaußenteil nach 1 und 2 in einer Ansicht entlang der Drehachse;
• 6: das Gelenkaußenteil nach 5 in einer Draufsicht im Schnitt;
• 7: das Kugelgleichlaufgelenk nach 2 in einer Seitenansicht im Schnitt;
• 8: das Kugelgleichgelenk nach 2, in einer Ansicht entlang der Drehachse;
• 9: das Gelenkinnenteil nach 8 in einer Draufsicht;
• 10: das Gelenkinnenteil nach 8 und 9 in einer Ansicht entlang der Drehachse;
• 11: das Gelenkaußenteil nach 8 in einer Draufsicht im Schnitt; und
• 12: das Gelenkaußenteil nach 11 in einer Ansicht entlang der Drehachse.

The invention and the technical environment are explained in more detail below with reference to the accompanying figures. It should be pointed out that the invention is not intended to be limited by the exemplary embodiments mentioned. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figures and with others To combine components and knowledge from the present description. In particular, it should be pointed out that the figures and in particular the proportions shown are only schematic. Show it:

• 1 : A joint outer part of a ball constant velocity joint in a side view in section;
• 2nd : a constant velocity ball joint with an inner joint part and the outer joint part after 1 , in a view along the axis of rotation;
• 3rd : the inner joint part after 2nd in a top view;
• 4th : the inner joint part after 2nd and 3rd in a view along the axis of rotation;
• 5 : the outer joint part after 1 and 2nd in a view along the axis of rotation;
• 6 : the outer joint part after 5 in a plan view in section;
• 7 : the ball constant velocity joint after 2nd in a side view in section;
• 8th : the ball joint according to 2nd , in a view along the axis of rotation;
• 9 : the inner joint part after 8th in a top view;
• 10th : the inner joint part after 8th and 9 in a view along the axis of rotation;
• 11 : the outer joint part after 8th in a plan view in section; and
• 12th : the outer joint part after 11 in a view along the axis of rotation.

The 1 shows an outer joint part 3rd a ball constant velocity joint 1 in a side view in section. 2nd shows a constant velocity ball joint 1 with an inner joint part 11 and the outer joint part 3rd to 1 , in a view along the axis of rotation 2nd . 3rd shows the inner joint part 2nd in a top view. 4th shows the inner joint part 11 to 2nd and 3rd in a view along the axis of rotation 2nd . 5 shows the outer joint part 3rd to 1 and 2nd in a view along the axis of rotation 2nd . 6 shows the outer joint part 3rd in a plan view in section VI-VI 5 . 7 shows the ball constant velocity joint 1 to 2nd in a side view in section. The 1 to 7 are described together below.

The ball constant velocity joint 1 is designed in the form of a cage-free sliding joint (i.e. without a cage). It includes an axis of rotation 2nd , an outer joint part 3rd , which is a closed connection side 4th , an open opening side 5 and one from an inner surface 6 limited cavity 7 has, as well as on the inner surface 6 between the connection side 4th and the opening side 5 at least along an axial direction 8th running outer ball tracks 9 , 10th . It also includes an inner joint part 11 which is in the cavity 7 of the outer joint part 3rd is positioned and connecting means 12th (a toothing, see 4th ) to accommodate one towards the opening side 5 of the outer joint part 3rd running wave 13 has, as well as on an outer surface 14 at least along the axial direction 8th running inner ball tracks 15 , 16 . One outer ball track each 9 , 10th and an inner ball track 15 , 16 form a pair of tracks 17th together. One ball each 18th is in every train pair 17th arranged. The outer ball tracks 9 , 10th run from the opening side 5 and along the axial direction 8th towards the connection side 4th in a radial direction 19th inside.

The platform ratio for all balls 18th and all outer ball tracks 9 , 10th is positive, so m> zero.

The pitch ratio describes the ratio of a path of a ball 18th in the ball track 9 , 10th , 15 , 16 in a radial direction 19th : delta radial direction 27 compared to the distance covered by the ball 18th in the ball track 9 , 10th , 15 , 16 along the axis of rotation 2nd delta axial direction 28 . The pitch ratio is positive because the outer ball tracks 9 , 10th in the outer joint part 3rd towards the opening side 5 in the radial direction 19th extending outwards (see 1 ). In 1 is also the PCR 29 shown, i.e. the radius relative to the axis of rotation 2nd on which a bullet 18th is arranged. In a stretched state of the constant velocity ball joint 1 (i.e. axes of rotation 2nd of outer joint part 3rd and inner joint part 11 are arranged coaxially to each other, the ball constant velocity joint 1 not bowed) are all balls 18th on a same PCR 29 arranged. When the straight constant velocity joint is pulled apart 1 when the bullets 18th so towards the opening side 5 moved, the PCR increases 29 increasingly because the platform ratio is positive.

The ball constant velocity joint 1 is a sliding joint, ie the inner joint part 11 is opposite the outer joint part 3rd in the axial direction 8th movable (in 1 based on the balls 17th shown). The displacement path, i.e. the displacement of the inner joint part 11 along the axial direction 8th corresponds to twice the path of the ball shown 17th along the outer ball track 9 , 10th of the outer joint part 3rd (please refer 1 ).

All outer ball tracks 9 , 10th have the same orientation, ie they start from the opening side 5 and along the axial direction 8th towards the connection side 4th in a radial direction 19th inside. The outer ball tracks run here 9 , 10th continuously inwards, so always have a positive platform ratio.

The outer joint part 3rd has no undercut, i.e. starting from the opening side 5 and towards the connection side 4th no local expansion in the radial direction 19th , on.

All inner ball tracks too 15 , 16 have the same orientation, ie they start from the opening side 5 and along the axial direction 8th towards the connection side 4th in a radial direction 19th outward.

The outer joint part 3rd is only on the opening side 5 executed open. The ball constant velocity joint 1 has six pairs of tracks 17th on.

The outer ball tracks 9 , 10th extend in the radial direction 19th along one, opposite the axis of rotation 2nd in the radial direction 19th constantly inclined outer tilt angle 20th .

The outer joint part 3rd has outer first ball tracks 9 and outer second ball tracks 10th on that along a circumferential direction 21 are arranged alternately. The outer first ball tracks 9 additionally extend in the circumferential direction 21 along one, opposite the axis of rotation 2nd in the circumferential direction 21 inclined outer first angle of inclination 22 . The outer second ball tracks 10th additionally extend in the circumferential direction 21 along one, opposite the axis of rotation 2nd in the circumferential direction 21 inclined outer second angle of inclination 23 . The outer first angle of inclination 22 and the outer second angle of inclination 23 extend in opposite circumferential directions 21 . The outer first angle of inclination 22 and the outer second angles of inclination 23 have the same angular amounts but opposite orientations.

The inner ball tracks 15 , 16 run from the opening side 5 and along the axial direction 8th towards the connection side 4th in the radial direction 19th outward. The inner ball tracks 15 , 16 extend in the radial direction 19th along one, opposite the axis of rotation 2nd in the radial direction 19th inclined inner tilt angle 24th . The inner tilt angle 24th and the outer tilt angle 20th have the same angular amounts but opposite orientations.

The inner joint part 11 has inner first ball tracks 15 and inner second ball tracks 16 on that along a circumferential direction 21 are arranged alternately. The inner first ball tracks 15 additionally extend in a circumferential direction 21 along one, opposite the axis of rotation 2nd in the circumferential direction 21 inclined inner first angle of inclination 25th . The inner second ball tracks 16 additionally extend in a circumferential direction 21 along one, opposite the axis of rotation 2nd in the circumferential direction 21 inclined inner second angle of inclination 26 . The inner first angle of inclination 25th and the inner second angle of inclination 26 extend in opposite circumferential directions 21 . The inner first angles of inclination 25th and the inner second angles of inclination 26 the same angular amounts have only opposite orientations.

All angles of inclination 22 , 23 , 25th , 26 the ball tracks 9 , 10th , 15 , 16 the ball constant velocity joint 1 have the same angular amounts.

8th shows the ball constant velocity joint 1 to 2nd , in a view along the axis of rotation 2nd . 9 shows the inner joint part 11 to 8th in a top view. 10th shows the inner joint part 11 to 8th and 9 in a view along the axis of rotation 2nd . 11 shows the outer joint part 3rd to 8th in a top view in section. 12th shows the outer joint part 3rd to 12th in a view along the axis of rotation 2nd . To the explanations 1 to 7 is referenced. The 8th to 12th are described together below.

The inner ball track 15 , 16 and the outer ball track 9 , 10th of a train pair 17th each additionally extend in a circumferential direction 21 along one, opposite the axis of rotation 2nd in the circumferential direction 21 inclined angle of inclination 22 , 23 , 25th , 26 . The inner ball track 15 , 16 extends along one, opposite the axis of rotation 2nd in the circumferential direction 21 inclined inner inclination angle 25th , 26 and the outer ball track 9 , 10th along one, opposite the axis of rotation 2nd in the circumferential direction 21 inclined outer angle of inclination 22 , 23 . The inner angle of inclination 25th , 26 and the outer angle of inclination 22 , 23 are opposite to the axis of rotation 2nd inclined in opposite directions.

Two inner ball tracks arranged adjacent to each other each extend 15 , 16 and two outer ball tracks arranged adjacent to each other 9 , 10th parallel to a central plane 30th , the middle plane 30th the axis of rotation 2nd includes and extends along the radial direction 19th against the circumferential direction 21 in the middle between the ball tracks 9 , 10th , 15 , 16 extends. This regulation applies to all pairs of inner ball tracks 15 , 16 and outer ball tracks 9 , 10th the ball constant velocity joint 1 . In this case, only two specific ball tracks arranged adjacent to each other form 9 , 10th , 15 , 16 the respective pair of ball tracks 9 , 10th , 15, 16. In the 8th to 12th is only one middle level at a time 30th between the pairs of ball tracks 9 , 10th , 15 , 16 shown. The middle level 30th parallel lines of the ball tracks 9 , 10th , 15 , 16 show the direction of action of a tool used to manufacture the ball tracks 9 , 10th , 15 , 16 parallel to the median plane 30th is moved. The direction of action of the tool is based on the respective angle of inclination 22 , 23 , 25th , 26 and the tilt angle 20th , 24th the respective ball track 9 , 10th , 15 , 16 together.

Reference list

1

Ball constant velocity joint

2nd

Axis of rotation

3rd

Outer joint part

4th

Connection side

5

Opening side

6

Inner surface

7

cavity

8th

axial direction

9

outer first ball track

10th

outer second ball track

11

Inner joint part

12th

Connection means

13

wave

14

Outside surface

15

inner first ball track

16

inner second ball track

17th

Train pair

18th

Bullet

19th

radial direction

20th

outer tilt angle

21

Circumferential direction

22

outer first angle of inclination

23

outer second angle of inclination

24th

inner tilt angle

25th

inner first angle of inclination

26

inner second angle of inclination

27

delta radial direction

28

delta axial direction

29

PCR

30th

Middle plane

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• US 3002364 [0003]
• US 313431 [0003]
• US 3298200 [0003]
• US 3338070 [0003]

Claims (17)

Ball constant velocity joint (1) in the form of a cageless sliding joint, at least comprising: an axis of rotation (2); an outer joint part (3) which has a closed connection side (4), an open opening side (5) and a cavity (7) delimited by an inner surface (6), and is located on the inner surface (6) between the connection side (4) and outer ball tracks (9, 10) running along the opening side (5) at least along an axial direction (8); such as an inner joint part (11) which is positioned in the cavity (7) of the outer joint part (3) and has connection means (12) for receiving a shaft (13) extending in the direction of the opening side (5) of the outer joint part (3), and on a Outer surface (14) at least along the axial direction (8) inner ball tracks (15, 16); an outer ball track (9, 10) and an inner ball track (15, 16) each forming a pair of tracks (17); one ball (18) being arranged in each pair of tracks (17); the outer ball tracks (9, 10) extending inwards from the opening side (5) and along the axial direction (8) to the connection side (4) in a radial direction (19). Ball constant velocity joint (1) after Claim 1 , wherein the ball constant velocity joint (1) has six, eight or ten pairs of tracks (17). Ball constant velocity joint (1) according to one of the preceding claims, wherein the outer ball tracks (9, 10) extend in the radial direction (19) along an outer tilt angle (20) inclined with respect to the axis of rotation (2) in the radial direction (19) . Ball constant velocity joint (1) after Claim 3 , wherein the outer tilt angle (20) is between 10 and 25 degrees. Ball constant velocity joint (1) according to one of the preceding claims, wherein the outer joint part (3) has outer first ball tracks (9) and outer second ball tracks (10) which are arranged alternately along a circumferential direction (21); wherein the outer first ball tracks (9) additionally extend in the circumferential direction (21) along an outer first angle of inclination (22) inclined in relation to the axis of rotation (2) in the circumferential direction (21); wherein the outer second ball tracks (10) additionally extend in the circumferential direction (21) along an outer second inclination angle (23) which is inclined with respect to the axis of rotation (2) in the circumferential direction (21), the outer first inclination angle (22) and the outer second angle of inclination (23) extends in opposite circumferential directions (21). Ball constant velocity joint (1) after Claim 5 , wherein the outer angles of inclination (22, 23) are between 3 and 15 degrees. Ball constant velocity joint (1) according to one of the preceding Claims 5 and 6 , wherein the outer first inclination angle (22) and the outer second inclination angle (23) have the same angular amounts. Ball constant velocity joint (1) according to one of the preceding claims, wherein the inner ball tracks (15, 16) proceed from the opening side (5) and along the axial direction (8) to the connection side (4) in the radial direction (19) to the outside . Ball constant velocity joint (1) after Claim 8 , wherein the inner ball tracks (15, 16) extend in the radial direction (19) along an inner tilt angle (24) which is inclined in relation to the axis of rotation (2) in the radial direction (19). Ball constant velocity joint (1) after Claim 9 , wherein the inner tilt angle (24) is between 10 and 25 degrees. Ball constant velocity joint (1) according to one of the preceding Claims 9 and 10th , wherein the inner tilt angle (24) and the outer tilt angle (20) have the same angular amounts. Ball constant velocity joint (1) according to one of the preceding claims, wherein the inner joint part (11) has inner first ball tracks (15) and inner second ball tracks (16) which are arranged alternately along a circumferential direction (21); wherein the inner first ball tracks (15) additionally extend in the circumferential direction (21) along an inner first inclination angle (25) which is inclined with respect to the axis of rotation (2) in the circumferential direction (21); the inner second ball tracks (16) additionally extending in the circumferential direction (21) along an inner second inclination angle (26) which is inclined with respect to the axis of rotation (2) in the circumferential direction (21), the inner first inclination angle (25) and the inner second angle of inclination (26) extends in opposite circumferential directions (21). Ball constant velocity joint (1) after Claim 12 , wherein the inner inclination angles (25, 26) are between 3 and 15 degrees. Ball constant velocity joint (1) according to one of the preceding Claims 12 and 13 , wherein the inner first inclination angle (25) and the inner second inclination angle (26) have the same angular amounts. Ball constant velocity joint (1) according to one of the preceding Claims 12 and 13 , wherein all angles of inclination (22, 23, 25, 26) have the same angular amounts. Ball constant velocity joint (1) according to one of the preceding claims, wherein the inner ball track (15, 16) and the outer ball track (9, 10) of a track pair (17) each additionally in a circumferential direction (21) along a, opposite to the axis of rotation (2nd ) extend in the circumferential direction (21) inclined angle of inclination (22, 23, 25, 26), the inner ball track (15, 16) extending along an inner inclination angle (25 , 26) and the outer ball track (9, 10) extends along an outer inclination angle (22, 23) which is inclined with respect to the axis of rotation (2) in the circumferential direction (21), the inner inclination angle (25, 26) and the outer Inclination angles (22, 23) are inclined in opposite directions with respect to the axis of rotation (2). Ball constant velocity joint (1) according to one of the preceding claims, wherein at least two mutually adjacent inner ball tracks (15, 16) or two adjacent outer ball tracks (9, 10) each extend parallel to a central plane (30), the central plane (30) encompasses the axis of rotation (2) and extends along the radial direction (19) in relation to the circumferential direction (21) centrally between the ball tracks (9, 10, 15, 16).

Images