ROTOR CARRIER, DISK CARRIER, A SYSTEM COMPRISING BOTH AND A METHOD FOR PRODUCING THE SYSTEM

Abstract

The present disclosure relates to a rotor carrier for an electric machine provided for the drive of a motor vehicle, which has, on the circumference, a rotor carrier connecting portion, which extends in a radial direction of the rotor carrier for connecting to a disk carrier connecting portion of a disk carrier of a multi-disk clutch. The present disclosure furthermore relates to a disk carrier for a multi-disk clutch for decoupling an electric machine provided for the drive of a motor vehicle from an internal combustion engine, which has, on the outer circumference, a disk carrier connecting portion for connecting to a rotor carrier connecting portion of a rotor carrier of the electric machine. The present disclosure furthermore relates to a system having a rotor carrier and a disk carrier as well as a method for producing such a system.

Claims

1. A rotor carrier for an electric machine provided for a drive of a motor vehicle, which has, on a circumference thereof, a rotor carrier connecting portion which extends in a radial direction of the rotor carrier for connecting to a disk carrier connecting portion of a disk carrier.

2. The rotor carrier as claimed in claim 1, wherein the rotor carrier connecting portion is designed to form a material-fitting or form-fitting connection to the disk carrier connecting portion.

3. The rotor carrier as claimed in claim 1, wherein the rotor carrier connecting portion has an indentation for realizing a radial force on the disk carrier.

4. The rotor carrier as claimed in claim 3, wherein a receiving hole for receiving the disk carrier connecting portion is provided at the base of the indentation.

5. The rotor carrier as claimed in claim 1, wherein the rotor carrier connecting portion has a radially inwardly projecting rotor carrier stud for engaging with the disk carrier connecting portion.

6. The rotor carrier as claimed in claim 5, wherein the rotor carrier stud has a head for engaging behind the disk carrier connecting portion.

7. A disk carrier for a multi-disk clutch for decoupling an electric machine provided for a drive of a motor vehicle from an internal combustion engine, which has, on the outer circumference, a disk carrier connecting portion for connecting to a rotor carrier connecting portion of a rotor carrier of the electric machine.

8. A disk carrier as claimed in claim 7, wherein the disk carrier connecting portion extends in a radial direction of the disk carrier for connecting to the rotor carrier connecting portion.

9. The disk carrier as claimed in claim 7, wherein the disk carrier connecting portion is designed to form a form-fitting connection to the rotor carrier connecting portion.

10. The disk carrier as claimed in claim 7, wherein the disk carrier connecting portion has a receiving opening for receiving the rotor carrier connecting portion.

11. The disk carrier as claimed in claim 10, wherein the receiving opening has an undercut.

12. The disk carrier as claimed in claim 7, wherein the disk carrier connecting portion has a radially outwardly projecting, disk carrier stud for engaging with the rotor carrier connecting portion.

13. A system having a rotor carrier as claimed in one claim 1 and a disk carrier which has on an outer circumference thereof, a disk carrier connecting portion, wherein the rotor carrier and the disk carrier are connected to one another via the rotor carrier connecting portion and the disk carrier connecting portion.

14. A method producing system as claimed in claim 13 comprising: forming the rotor carrier connecting portion or the disk carrier connecting portion; arranging the disk carrier in the rotor carrier; and forming a material-fitting or form-fitting connection with the aid of the rotor carrier connecting portion and the disk carrier connecting portion.

15. The method as claimed in claim 14, wherein the formation of the rotor carrier connecting portion or the disk carrier connecting portion comprises forming an indentation in a surface of the rotor carrier or a surface of the disk carrier.

16. The disk carrier as claimed in claim 12, wherein the rotor carrier connecting portion comprises an indentation having a base, wherein the base further comprises a receiving hole and wherein the disk carrier stud head projects into the receiving hole.

17. The disk carrier as claimed in claim 16, wherein the disk carrier stud includes a disk carrier stud head for engaging behind the receiving hole.

18. The disk carrier as claimed in claim 17, wherein the disk carrier stud head is flush with an outer wall of the rotor carrier at an end that is remote from the disk carrier.

19. The disk carrier as claimed in claim 3, wherein the rotor connecting portion has a plurality of indentations, and wherein the plurality of indentations are evenly spaced from one another in a circumferential direction.

20. The disk carrier as claim in claim 3, wherein the indentation has a base and a raised portion, the raised portion projecting radially outward.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Exemplary arrangements of the disclosure are now described by way of example and with reference to the accompanying figures, in which:

[0057] FIG. 1 shows a system having a rotor carrier and a disk carrier according to a first exemplary arrangement;

[0058] FIG. 2 shows a connection between the rotor carrier and the disk carrier of FIG. 1;

[0059] FIG. 3 shows a perspective view of the system of FIG. 1;

[0060] FIG. 4 shows a connection between a rotor carrier and a disk carrier according to a second exemplary arrangement;

[0061] FIG. 5 shows a connection between a rotor carrier and a disk carrier according to a third exemplary arrangement;

[0062] FIG. 6 shows a connection between a rotor carrier and a disk carrier according to a fourth exemplary arrangement; and

[0063] FIG. 7 shows a method for producing a system having a rotor carrier and a disk carrier.

DETAILED DESCRIPTION

[0064] In FIG. 1, a system 100 is shown, which has a rotor carrier 1 and a disk carrier 11, which are designed and connected to one another according to a first exemplary arrangement. The rotor carrier 1 supports a rotor stack (not shown) and is part of a rotor of an electric machine (not shown). The rotor carrier 1 has a hollow cylindrical portion 2.

[0065] The disk carrier 11 is designed as an outer disk carrier of a multi-disk dutch, which is provided as a disconnect dutch 1 and has a hollow cylindrical portion 12. The disk carrier 11 is furthermore arranged in the rotor carrier 1 and is generally pushed therein. In the assembled state, the rotor carrier 1 and the disk carrier 11 have a common longitudinal axis or axis of symmetry R.

[0066] FIG. 2 shows an enlargement (not drawn to scale) of region A of FIG. 1. The rotor carrier 1 has a rotor carrier connecting portion 3 on the circumference of its hollow cylindrical portion 12. The rotor carrier connecting portion 3 has an indentation 5, which is illustrated schematically and extends radially inwards. The indentation 5 is configured in such a way that it exerts a radially inwardly acting spring force on the disk carrier 11, which is arranged in the rotor carrier 1.

[0067] In the exemplary arrangement shown, the indentation 5, as viewed in the circumferential direction of the rotor carrier 1, has a trapezoidal cross-section. Other cross-sections are also possible provided they realize the above-described spring force and the indentation 5 is suitable for welding to the disk carrier connecting portion 13.

[0068] The disk carrier 11 has a disk carrier connecting portion 13. In the arrangement shown here, the disk carrier connecting portion 13 corresponds to a region of the outer wall of the hollow cylindrical portion 12 of the disk carrier 11, wherein the region is in at least partial contact with the indentation 5. The rotor carrier connecting portion 3 and the disk carrier connecting portion 13 form a form-fitting connection 9a, which can be formed, for example, by laser welding or spot-welding. The rotor carrier 1 and the disk carrier 11 are thus connected to one another in a rotationally fixed and axially fixed manner.

[0069] In other alternatives (not shown), the indentation 5 can be designed in such a way that the spring force realized thereby is strong enough for the indentation 5 to form a force-fitting connection to the disk carrier connecting portion 13 and for the rotor carrier 1 to therefore be connected to the disk carrier 11.

[0070] FIG. 3 shows a perspective view of the system of FIG. 1. The rotor carrier 1 has a plurality of indentations 5 over its entire circumference, which are evenly distributed in the circumferential direction of the rotor carrier 11. In other words, the indentations 5 are evenly spaced from one another in the circumferential direction. Alternatively, the indentations 5 can be unevenly distributed in the circumferential direction, i.e. they can be at different spacings from one another.

[0071] The indentations 5 are welded to the disk carrier connecting portions 13 of the disk carrier 11 and form material-fitting connections 9a. Alternatively, only some of the plurality of indentations 5 may be welded to the disk carrier 11.

[0072] The indentations 5 are furthermore arranged in different positions as seen in the axial direction of the axis R. An improved load distribution can thus take place via the indentations 5. Alternatively, the indentations can be arranged in the same position in the axial direction, for example centrally on the circumference of the rotor carrier 1.

[0073] In further exemplary arrangements (not shown), only a single indentation 5 may be provided. Additionally, this single indentation 5 can extend along the entire circumference in the circumferential direction of the rotor carrier 1 and, furthermore additionally, the single indentation 5 can be welded to the rotor carrier at least partially, if not completely, along its circumference.

[0074] FIG. 4 shows a second exemplary arrangement for the rotor carrier 1 and the disk carrier 11. The indentation 5 here has a base 5a and a raised portion 5b, wherein the raised portion 5b is arranged on the base 5a and projects radially outwards. As a result of the raised portion 5b, the indentation 5 can be elastically deformed in the radial and/or axial direction, so that the indentation 5b can have a spring effect. In some embodiments, the disk carrier 11 can be arranged in the rotor carrier 1 more easily as a result of the elastic deformability of the indentation 5. In other exemplary arrangements (not shown), it is also possible that the indentation 5 does not have a raised portion 5b on its base 5a.

[0075] The disk carrier connecting portion 13 has a receiving opening 15 for receiving the indentation 5, wherein the receiving opening 15 is designed as a through-opening in the disk carrier 11. The indentation 5 and the receiving opening 15 form a form-fitting connection, so that the rotor carrier 1 and the disk carrier 11 are connected to one another in a rotationally fixed and axially fixed manner. In the assembled state, the indentation 5 exerts a spring force on the disk carrier 11 in the radial direction. The indentation 5 can furthermore be elastically deformed in the axial direction owing to the raised portion 5b, so that the indentation 5 can exert a spring force on an inner edge of the receiving opening 15 in the axial direction. A force-fitting connection can thus be additionally formed between the indentation 5 and the receiving opening 15, so that a relative movement between the indentation 5 and the receiving opening 15 in the radial direction can be hindered, if not prevented. A stable connection can therefore be formed between the rotor carrier connecting portion 3 and the disk carrier connecting portion 13.

[0076] FIG. 5 shows a third exemplary arrangement for the rotor carrier 1 and for the disk carrier 11. The rotor carrier connecting portion 3 shown here likewise comprises the indentation 5 having the base 5a. The indentation 5 abuts against an outer wall of the disk carrier 11 and exerts the above-described spring force on the disk carrier 11

[0077] Instead of a raised portion 5b as in FIG. 4, the base 5a of the indentation 5 has a receiving hole 6 for receiving the disk carrier connecting portion 13. To this end, the disk carrier connecting portion 13 has a disk carrier stud 16 for engaging with the rotor carrier connecting portion 3. Upon engagement, the disk carrier stud 16 projects into the receiving hole 6. A form-fitting connection 9b between the rotor carrier connecting portion 3 and the disk carrier connecting portion 13 can therefore be formed by the receiving hole 6 and the disk carrier stud 16.

[0078] The disk carrier stud 16 furthermore has a disk carrier stud head 16a for engaging behind the receiving hole 6 of the indentation 5. The head 16a is designed to be flush with the outer wall of the hollow cylindrical portion 2 of the rotor carrier 1 at its end which is remote from the disk carrier 11.

[0079] FIG. 6 shows a fourth exemplary arrangement for the rotor carrier 1 and the disk carrier 11. Instead of an indentation 5 as in FIGS. 1 to 5, the rotor carrier connecting portion 3 here has a (rotor carrier) stud 7, which is in engagement with a receiving opening 17 of the disk carrier connecting portion 13, wherein the receiving opening 17 is designed as a receiving cavity. The rotor carrier stud 7 has a (rotor carrier stud) head 7a, which engages behind an undercut 17a provided in the receiving opening 17. A form-fitting connection 9b is thus formed in the circumferential direction of the rotor carrier 1 and the disk carrier 11. The rotor carrier 1 and the disk carrier 11 are therefore connected to one another in a rotationally fixed and axially fixed manner.

[0080] FIG. 7 shows a method for producing a system having the rotor carrier 1 and the disk carrier 11.

[0081] To this end, either the rotor carrier connecting portion 3 or the disk carrier connecting portion 13 are formed in S1, depending on which exemplary arrangement is produced.

[0082] In the first and third exemplary arrangements of FIGS. 1 to 3 or FIG. 5, the rotor carrier connecting portion 3 is firstly formed, namely the indentation 5 and possibly the receiving hole 6 at the base 5a of the indentation.

[0083] In the second and fourth exemplary arrangements of FIG. 4 or FIG. 6, the disk carrier connecting portion 13 having the receiving opening 15; 17 is initially formed. The disk carrier 11 is arranged in the rotor carrier 1 in S2.

[0084] The material-fitting or form-fitting connection 9a, 9b is formed with the aid of the rotor carrier connecting portion 3 and the disk-carrier connecting portion 13 in S3. To this end, absent corresponding connecting portion 3; 13 which was not formed in S1 is formed as required following the arrangement of the disk carrier 11 in the rotor carrier 1. The formation of the absent corresponding connecting portion 3; 13 is described below.

[0085] For the first exemplary arrangement as shown in FIGS. 1 to 3, the disk carrier connecting portion 13 is already present, namely as a region on the outer wall of the disk carrier 11 which is provided for welding to the indentation 5.

[0086] For the second exemplary arrangement according to FIG. 4, the surface of the outer wall of the rotor carrier 1 is indented by a forming tool, so that the indentation 5 having the raised portion 5b is formed by the reshaping of the rotor carrier 1. The indentation 5 forms the form-fitting connection 9b to the receiving opening 15. A cushion for holding against the forming tool is furthermore used when forming the indentation 5.

[0087] For the third exemplary arrangement according to FIG. 5, the surface of the inner wall of the disk carrier 11 is indented by a forming tool so that the disk carrier stud 16 having the head 16a is formed by the reshaping of the disk carrier 11. The disk carrier stud 16 forms the form-fitting connection 9b with the receiving hole 6 of the indentation 5. A corresponding cushion for holding against the forming tool is furthermore used when forming the disk carrier stud 17.

[0088] For the third exemplary arrangement according to FIG. 6, the surface of the outer wall of the rotor carrier 1 is indented by a forming tool so that the rotor carrier stud 7 having the head 7a is formed by the reshaping of the rotor carrier 1.

[0089] The rotor carrier stud 7 forms the form-fitting connection 9b with the receiving opening or receiving cavity 17.