Axle unit

Patent metadata

Field	Value
Publication number	US-10173467-B2
Application number	US-201515510111-A
Country	US
Kind code	B2
Filing date	Sep 8, 2015
Priority date	Sep 12, 2014
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

The present invention relates to an axle unit comprising an axle tube and an axle stub, wherein the axle stub is formed to be rotationally symmetrical with respect to a stub axis in some regions and has a channel which extends substantially parallel to the stub axis, wherein the axle stub has a first connection portion which has an engagement geometry for fluid-tight connection to the channel, wherein the axle tube is formed to be substantially rotationally symmetrical about a tube axis and wherein the axle tube and the axle stub are fixed on/to one another by way of a cross-member in such a way that the tube axis and the stub axis are spaced from one another.

First claim

The invention claimed is:

1. An axle unit, comprising:
an axle tube; and
an axle stub;
wherein the axle stub is rotationally symmetrical with respect to a stub axis in some regions and has a channel which extends substantially parallel to the stub axis;
wherein the axle stub has a first connection portion which has an engagement geometry for fluid-tight connection to the channel;
wherein the axle tube is substantially rotationally symmetrical about a tube axis;
wherein the axle tube and the axle stub are fixed to one another by way of a cross-member such that the tube axis and the stub axis are spaced from one another; and
wherein a second connection portion opposite the first connection portion is arranged on at least one of the end face of the cross-member and the axle stub.

2. The axle unit as claimed in claim 1 , wherein the second connection portion has an engagement geometry configured for fluid-tight connection to the channel.

3. The axle unit as claimed in claim 2 , wherein the second connection portion is accessible from the outside.

4. The axle unit as claimed in claim 3 , wherein at least one of the channel and the second connection portion are arranged spaced from the first joining region and from the second joining region.

5. The axle unit as claimed in claim 2 , wherein the second connection portion is arranged on the cross-member.

6. The axle unit as claimed in claim 2 , wherein the second connection portion is arranged on the axle stub.

7. The axle unit as claimed in claim 2 , wherein the channel is connected in a fluid-tight manner to at least one of a cross-member channel provided in the cross-member, and to a second connection portion on the cross-member.

8. The axle unit as claimed in claim 1 , wherein the axle stub has, at an end of the axle stub opposite the first connection portion, a first joining region which is configured to fix on a corresponding second joining region of the cross-member, and wherein the first joining region has an extent at least one of along and transversely to the stub axis.

9. The axle unit as claimed in claim 1 , wherein the axle stub has a fastening portion configured to fix a drive unit in place, and wherein the fastening portion is especially arranged adjacent to the first connection portion.

10. The axle unit as claimed in claim 1 , wherein a supporting element is configured to be fixed on the cross-member and on at least one of the axle stub and the axle tube to absorb forces and bending moments between the cross-member and the at least one of the axle stub and the axle tube.

11. The axle unit as claimed in claim 1 , wherein the channel is located in a sleeve element arranged in the axle stub.

12. The axle unit as claimed in claim 1 , wherein the axle stub is integral with the channel as a cast body.

13. The axle unit as claimed in claim 1 , wherein the axle stub has a plurality of channels, wherein a plurality of first connection portions and second connection portions are in fluid-conducting communication with the channel.

14. The axle unit as claimed in claim 13 , wherein the channel is one of multiple channels.

15. The axle unit as claimed in claim 1 , wherein the axle tube is friction welded to the cross-member.

16. The axle unit as claimed in claim 1 , wherein the tube axis and the stub axis are spaced from one another by an offset, and wherein the ratio of the offset to a stub length of the axle stub is 0.2 to 2.

17. The axle unit as claimed in claim 16 , wherein the ratio of the offset to the stub length is from 0.3 to 1.5.

18. The axle unit as claimed in claim 17 , wherein the ratio of the offset to the stub length is from 0.8 to 1.

Assignees

• Saf Holland Gmbh

Inventors

• Christ Armin

Classifications

• B60B2900/115

  Complexity · CPC title

• B60B2900/113

  Production or maintenance time · CPC title

• B60B2900/112

  Costs · CPC title

• B60B2310/302

  by welding · CPC title

• B60B35/08 Primary

  of closed hollow section · CPC title