Connection device for a shaft

Patent metadata

Field	Value
Publication number	US-9631675-B2
Application number	US-201514851582-A
Country	US
Kind code	B2
Filing date	Sep 11, 2015
Priority date	Mar 12, 2013
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

A lightweight construction connection device is provided for a shaft, formed from an end section of a pipe segment, over which the shaft can be slid and having a knurling on the radial outside surface thereof. A support ring is arranged in the interior of the end section of the pipe segment.

First claim

What is claimed is:

1. A connection for a shaft, comprising:
a pipe segment having an end section, the end section being located at a longitudinal end of the pipe segment, a radial outer surface of the end section of the pipe segment having external toothing;
a radially protruding bead that is adjacent to the end section, and having an outer diameter that is larger than an outer diameter of the end section;
a balancing area that is located on an opposite side of the radially protruding bead from the end section; and
a supporting ring arranged in an interior of the end section of the pipe segment, wherein
the end section of the pipe segment having the supporting ring and the radial outer surface with the external tooting are configured for the shaft to be slid over the end section,
an outer diameter of the end section of the pipe segment gradually decreases to a predetermined diameter along a longitudinal direction of the pipe segment, and
the balancing area having an outer diameter that is smaller than the outer diameter of the end section.

2. The connection according to claim 1 , wherein the end section of the pipe segment has a thin-walled construction with a wall thickness of between 1.2 and 2.5 millimeters.

3. The connection according to claim 2 , wherein an outer diameter of the supporting ring is larger than an inner diameter of the end section of the pipe segment.

4. The connection according to claim 3 , further comprising a press-fit connection of the supporting ring in the interior of the end section of the pipe segment.

5. The connection according to claim 4 , wherein the supporting ring has an axial dimension of from 10 to 20 millimeters.

6. The connection according to claim 1 , wherein an outer diameter of the supporting ring is larger than an inner diameter of the end section of the pipe segment.

7. The connection according to claim 1 , further comprising a press-fit connection of the supporting ring in the interior of the end section of the pipe segment.

8. The connection according to claim 1 , wherein the supporting ring has an axial dimension of from 10 to 20 millimeters.

9. The connection according to claim 1 , wherein the external toothing is a milled knurling.

10. The connection according to claim 9 , wherein the milled knurling extends in a longitudinal axis of the end section of the pipe segment.

11. The connection according to claim 1 , wherein the balancing area is configured to allow balancing weights to be mounted.

12. The connection according to claim 1 , wherein the pipe segment is made of steel.

13. The connection according to claim 1 , wherein
the support ring is disposed in the middle of the end section, and
the supporting ring extends, along a longitudinal direction of the end section, about one third of a length of the end section.

14. A connection for a shaft, comprising:
a pipe segment having
on an outer surface thereof a radially protruding bead, and external teeth disposed on a radial outer surface of the pipe segment adjacent to the radially protruding bead;

a balancing area that is located on an opposite side of the radially protruding bead from an end section; and
a supporting ring arranged in an interior of the end section of the pipe segment, wherein
the end section of the pipe segment having the supporting ring and the radial outer surface with the external teeth is configured for the shaft to be slid over the end section,
the support ring is disposed in the middle of the end section,
the supporting ring extends, along a longitudinal direction of the end section, about one third of a length of the end section,
the radially protruding bead defines a breaking location at which the connection breaks when a predefined load is applied to the connection,
the end section is located at a longitudinal end of the pipe segment,
the radially protruding bead has an outer diameter that is larger than an outer diameter of the end section, and
the balancing area has an outer diameter that is smaller than the outer diameter of the end section.

15. A connector assembly comprising:
a shaft;
a pipe segment having
a radially protruding bead, and external teeth disposed on a radial outer surface of the pipe segment adjacent to the radially protruding bead; and

a supporting ring arranged in an interior of an end section of the pipe segment; and
a balancing area that is located on an opposite side of the radially protruding bead from the end section, wherein
the end section of the pipe segment having the supporting ring and the radial outer surface with the external teeth are configured for the shaft to be slid over the end section,
an outer diameter of the end section of the pipe segment gradually decreases to a predetermined diameter along a longitudinal direction of the pipe segment, to thereby accept cooperation with shafts of different sizes,
the radially protruding bead defines a breaking location at which the connector assembly breaks when a predefined load is applied to the connector assembly,
the end section is located at a longitudinal end of the pipe segment,
the radially protruding bead has an outer diameter that is larger than an outer diameter of the end section, and
the balancing area has an outer diameter that is smaller than the outer diameter of the end section.

16. The connector assembly according to claim 15 , wherein the shaft is made of fiber-reinforced plastic.

17. The connector assembly according to claim 16 , wherein the fiber-reinforced plastic is a carbon fiber reinforced plastic.

18. The connector assembly according to claim 17 , wherein the shaft is a drive shaft of a motor vehicle.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Streinz Wolfgang
• Zeilner Armin
• Reindl Johann
• Hofstetter Josef
• Gruenwald Heinrich

Classifications

• F16D1/0858

  due to the elasticity of the hub (including shrink fits) · CPC title

• B60K17/22

  characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft · CPC title

• F16D1/10 Primary

  Quick-acting couplings in which the parts are connected by simply bringing them together axially · CPC title

• F16C3/026

  Shafts made of fibre reinforced resin · CPC title

• F16C3/023

  made of several parts, e.g. by welding · CPC title