Valve housing for a control valve of a camshaft adjusting system, and method for producing a valve housing

Patent metadata

Field	Value
Publication number	US-9284860-B2
Application number	US-201113883942-A
Country	US
Kind code	B2
Filing date	Aug 23, 2011
Priority date	Nov 9, 2010
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

A valve housing for a control valve of a camshaft adjuster, including a housing flange for fastening to a control unit as well as an essentially cylindrical housing component for accommodating a control piston. It is provided that the housing component is rotatably fixedly attached to the housing flange by a form-locked connection. A valve housing of this type is cost effective to manufacture and has a low weight, while ensuring operational reliability. The invention furthermore relates to a method for manufacturing an aforementioned valve housing.

First claim

What is claimed is:

1. A valve housing for a control valve of a camshaft adjusting system comprising:
a housing flange for fastening to a control unit; and
a cylindrical housing component for accommodating a control piston, the housing component being rotatably fixedly attached to the housing flange by a form-locked connection, wherein the housing flange includes a collar into which the housing component is inserted with a shoulder and wherein the shoulder of the housing component has a plurality of indentations along its outer circumference, via which the housing flange is caulked to the housing component.

2. The valve housing as recited in claim 1 wherein the housing component is additionally axially fixed to the housing flange by the form-locked connection.

3. The valve housing as recited in claim 1 wherein at least one of the indentations includes an edge recess on an edge of the shoulder facing away from the collar.

4. A valve housing for a control valve of a camshaft adjusting system comprising:
a housing flange for fastening to a control unit; and
a cylindrical housing component for accommodating a control piston, the housing component being rotatably fixedly attached to the housing flange by a form-locked connection, wherein the housing component includes a plurality of annular elements spaced an axial distance apart and connected to each other by axial webs.

5. The valve housing as recited in claim 4 wherein at least one collar part of the housing flange is crimped around a shoulder of the housing component and rests against the axial webs for rotatably fixed attachment.

6. The valve housing as recited in claim 4 wherein at least one of the annular elements is provided at one axial end of the housing component as a shoulder, the axial webs converging on the shoulder, each forming an axial contact surface for a collar of the housing flange.

7. A method for manufacturing a valve housing for a control valve, the method comprising:
producing a housing flange for fastening to a control unit;
producing a cylindrical housing component for accommodating a control piston; and
rotatably fixing the housing component to the housing flange by a form-locked connection, wherein
the housing flange is produced with a collar, the housing component is produced with a shoulder along whose outer circumference a plurality of indentations are provided, and the shoulder of the housing component is inserted into the collar of the housing flange, and a material of the collar is caulked into the indentations in the shoulder.

Assignees

• Bittel Phillipp
• Foerst Stefan
• Weiss Markus
• Groeschel Josef
• Schaeffler Technologies Ag

Inventors

• Bittel Phillipp
• Foerst Stefan
• Weiss Markus
• Groeschel Josef

Classifications

• F01L1/34 Primary

  characterised by the provision of means for changing the timing of the valves without changing the duration of opening {and without affecting the magnitude of the valve lift} · CPC title

• Y10T29/49293

  Camshaft making · CPC title

• F16K27/041

  cylindrical slide valves · CPC title

• F01L2001/34426

  Oil control valves · CPC title

• F15B13/044

  operated by electrically-controlled means, e.g. solenoids, torque-motors · CPC title