Sliding element with partially hardened latching elevation

Patent metadata

Field	Value
Publication number	US-11466595-B2
Application number	US-201816639172-A
Country	US
Kind code	B2
Filing date	Aug 9, 2018
Priority date	Aug 16, 2017
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

A slide element for displacement of a cam segment in an axial direction along a camshaft may include a slide sleeve, which has a longitudinal toothing formed at least sectionally along an inner wall of the slide sleeve and has a latching section formed on the inner wall and serving for interaction with a latching means. The latching section comprises a latching means receiving part, which comprises at least two latching grooves formed adjacently in an axial direction and at least one latching elevation formed between the latching grooves of the latching means receiving part and directed inward. The latching elevation may be partially hardened exclusively in a latching means transfer region.

First claim

What is claimed is:

1. A slide element for displacement of a cam segment in an axial direction along a shaft of a camshaft, the slide element comprising a slide sleeve having a longitudinal toothing formed at least sectionally along an inner wall of the slide sleeve, the slide sleeve having a latching section that is formed on the inner wall and is configured to interact with a latching means, wherein the latching section comprises a latching means receiving part that includes latching grooves formed adjacently in an axial direction and a latching elevation formed between the latching grooves and directed inward, wherein the latching elevation is partially hardened, exclusively in a latching means transfer region, wherein the latching means transfer region of the latching elevation comprises teeth that are formed adjacently to one another in a circumferential direction.

2. The slide element of claim 1 wherein the latching elevation is partially hardened by way of induction heating.

3. The slide element of claim 2 wherein the latching elevation is heated at least in the latching means transfer region by way of an inductor, wherein a width of the inductor corresponds to a length of the latching means transfer region formed in a circumferential direction and to be hardened.

4. The slide element of claim 1 wherein at least one of the teeth is formed in an extension to the longitudinal toothing.

5. The slide element of claim 1 comprising a cam segment that includes axially adjacently arranged cams with mutually different cam profiles including a cam base circle and including a cam elevation.

6. The slide element of claim 5 wherein the latching elevation is partially hardened in the latching means transfer region that is opposite the cam elevation of the cam segment.

7. The slide element of claim 1 wherein the latching means transfer region is cooled by way of a flowable cooling medium that is conductible via an inductor to the latching means transfer region.

8. A slide element for displacement of a cam segment in an axial direction along a shaft of a camshaft, the slide element comprising a slide sleeve having a longitudinal toothing formed at least sectionally along an inner wall of the slide sleeve, the slide sleeve having a latching section that is formed on the inner wall and is configured to interact with a latching means, wherein the latching section comprises a latching means receiving part that includes latching grooves formed adjacently in an axial direction and a latching elevation formed between the latching grooves and directed inward, wherein the latching elevation is partially hardened, exclusively in a latching means transfer region, wherein the latching elevation comprises a toothed ring of ring-like form that includes teeth formed adjacently in a circumferential direction.

9. The slide element of claim 8 wherein at least one of the teeth is formed in an extension to the longitudinal toothing.

Assignees

• Thyssenkrupp Presta Tecct Ag
• Thyssenkrupp Ag

Inventors

• Kargl Rene

Classifications

• F01L2303/01

  Tools for producing, mounting or adjusting, e.g. some part of the distribution · CPC title

• F01L2013/0052

  with cams provided on an axially slidable sleeve · CPC title

• F01L1/047 Primary

  Camshafts · CPC title

• F01L2001/0471

  Assembled camshafts · CPC title

• B23P2700/02

  Camshafts · CPC title