Output element of a camshaft adjuster having a partial structuring on the contact surface to the camshaft

Patent metadata

Field	Value
Publication number	US-10316707-B2
Application number	US-201715497476-A
Country	US
Kind code	B2
Filing date	Apr 26, 2017
Priority date	Apr 27, 2016
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

An output element (1) of a camshaft adjuster (8) is described, in which the output element (1) has a contact surface (2) for rotatably fixed connection to a camshaft; the contact surface (2) has at least one outlet port (3) of an oil channel (4) of the output element (1), which may be situated opposite an outlet port of an oil channel of the camshaft in order to conduct hydraulic medium from the camshaft into the output element (1); the contact surface (2) has a structuring (6) in order to increase the torque transmission between the output element (1) and the camshaft; this structuring (6) is structure-free in the area (5) around the outlet port (3) and this area (5) is designed for sealing the outlet port (3) with respect to the surrounding environment.

First claim

What is claimed is:

1. An output element of a camshaft adjuster comprising:
a contact surface for rotatably fixed connection to a camshaft, the contact surface having at least one outlet port of an oil channel of the output element, the at least one outlet port of the oil channel of the output element situatable opposite at least one camshaft outlet port of a camshaft oil channel of the camshaft in order to conduct hydraulic medium from the camshaft into the output element;
the contact surface having a first area including a pattern of elevations configured for engaging the camshaft for torque transmission between the output element and the camshaft, the contact surface having a second area not including the pattern of elevations and surrounding the at least one outlet port of the oil channel of the output element, and the second area being designed for contacting a further part for forming a seal around the at least one outlet port of the oil channel of the output element.

2. The output element as recited in claim 1 wherein the pattern of elevations is a laser structuring.

3. The output element as recited in claim 1 wherein the second area borders the at least one outlet port of the oil channel of the output element.

4. The output element as recited in claim 1 wherein one individual elevation of the pattern of elevations completely borders the at least one outlet port of the oil channel of the output element.

5. The output element as recited in claim 1 wherein the second area is set back axially with respect to the pattern of elevations.

6. The output element as recited in claim 1 wherein the second area is planar.

7. The output element as recited in claim 1 wherein the second area is conical.

8. The output element as recited in claim 1 wherein the at least one outlet port of the oil channel of the output element is multiple outlet ports and the second area borders the multiple outlet ports.

9. The output element as recited in claim 8 wherein the second area includes a multiple rings, each of the multiple rings surrounding a different one of the multiple ports.

10. The output element as recited in claim 9 wherein the first area surrounds all of the multiple rings.

11. The output element as recited in claim 8 wherein the second area includes a first ring surrounding all of the multiple ports.

12. The output element as recited in claim 11 wherein the first area includes a second ring radially outside of the first ring and a third ring radially inside of the first ring.

13. The output element as recited in claim 12 wherein the second area includes a fourth ring radially inside of the third ring, the fourth ring surrounding a central opening of the contact surface.

14. The output element as recited in claim 1 wherein the at least outlet port of the oil channel of the output element includes a first outlet port, the first area including a ring surrounding the first outlet port.

15. An output element of a camshaft adjuster comprising:
a contact surface for rotatably fixed connection to a camshaft, the contact surface having a central opening and an axial outlet port of an oil channel of the output element, the axial outlet port of the oil channel of the output element configured to be situated opposite a camshaft outlet port of a camshaft oil channel of the camshaft in order to conduct hydraulic medium from the camshaft into the output element;
the contact surface having a first area including a pattern of elevations configured for engaging the camshaft for torque transmission between the output element and the camshaft, and the contact surface further having a second area not including the pattern of elevations surrounding the axial outlet port of the oil channel of the output element, the second area being designed for contacting the camshaft for forming a seal around the outlet port of the oil channel of the output element; and
a third area not including the pattern of elevations in the shape of a circular ring adjacent to the central opening and configured to contact the camshaft for forming a seal around a radial outlet port arranged in the central opening.

Assignees

• Schaeffler Technologies Ag

Inventors

• Weber Juergen

Classifications

• F01L2800/18

  Testing or simulation · CPC title

• F01L2250/06

  the camshaft being driven by gear wheels · CPC title

• F01L2250/04

  the camshaft being driven by belts · CPC title

• F01L2250/02

  the camshaft being driven by chains · CPC title

• F01L2001/34423

  Details relating to the hydraulic feeding circuit · CPC title