Actuator for cam phaser and cam phaser

Abstract

An actuator for a cam phaser, the cam phaser including a hydraulic valve that is adjustable by the actuator, wherein the actuator is receivable at a housing section of a component that receives the cam phaser, wherein the actuator includes a retaining element and a housing with functionally relevant components, wherein the actuator is attached by the retaining element at the housing section, wherein the retaining element is configured separate from the housing, wherein safe positioning of the actuator at the housing section is provided by a section of the retaining element that supports the actuator at the housing section in a direction of an axial orientation of the actuator, and wherein a housing cover of the housing is at least partially arranged between the section of the retaining element and the housing section.

What is claimed is: 
     
         1 . An electromagnetic actuator for a cam phaser, the electromagnetic actuator comprising:
 an actuator housing that includes an actuator housing functional section and an actuator housing cover; and   a retainer element;   wherein the actuator housing provides a full enclosure for functionally relevant components including a coil carrier and a pole tube,   wherein the electromagnetic actuator is receivable at a component housing section of a component that receives the cam phaser,   wherein the electromagnetic actuator is attachable at the component housing section by the retainer element,   wherein the retainer element is configured separate from an inside of the full enclosure of the functionally relevant components provided by the actuator housing,   wherein the retainer element is not in contact with the functionally relevant components,   wherein the electromagnetic actuator is supported at the component housing section by a section of the retainer element in a direction of an axial orientation of the electromagnetic actuator,   wherein the actuator housing cover of the actuator housing is at least partially arranged between the section of the retainer element and the component housing section, and   wherein the actuator housing functional section and the actuator housing cover are fixed at each other through direct bidirectional axial and radial form locking between the actuator housing functional section and the actuator housing cover so that the actuator housing functional section and the actuator housing cover by themselves enclose and support the functionally relevant components to render the functionally relevant components functional.   
     
     
         2 . The electromagnetic actuator according to  claim 1 , wherein the actuator housing cover and the retainer element are arranged along a circumference of the actuator housing functional section as an outer boundary that is oriented away from the component housing section. 
     
     
         3 . The electromagnetic actuator according to  claim 1 , wherein the retainer element is recessed to accommodate the actuator housing. 
     
     
         4 . The electromagnetic actuator according to  claim 1 , wherein the retainer element envelops the actuator housing essentially along a circumference of the actuator housing and along an enveloping surface of the actuator housing. 
     
     
         5 . The electromagnetic actuator according to  claim 1 , wherein the retainer element receives the actuator housing in a form locking manner. 
     
     
         6 . The electromagnetic actuator according to  claim 1 ,
 wherein the retainer element includes a contact surface that is arranged transversal to the axial orientation of the electromagnetic actuator, and   wherein the contact surface is arranged opposite to and in contact with an actuator housing surface.   
     
     
         7 . The electromagnetic actuator according to  claim 1 ,
 wherein a snap lock element is arranged at an enveloping surface of the actuator housing,   wherein the snap lock element is configured to prevent a movement of the retainer element in the axial orientation.   
     
     
         8 . The electromagnetic actuator according to  claim 1 , wherein the retainer element is configured to receive a connection socket that is arranged at the actuator housing. 
     
     
         9 . The electromagnetic actuator according to  claim 1 , wherein the retainer element receives a connection socket of the actuator at least partially. 
     
     
         10 . The electromagnetic actuator according to  claim 1 , wherein the retainer element is configured as an injection molded component. 
     
     
         11 . The electromagnetic actuator according to  claim 9 , wherein the retainer element includes an electrical connection of the connection socket. 
     
     
         12 . The electromagnetic actuator according to  claim 1 , wherein the retainer element is attachable at the component housing section in a disengageable manner. 
     
     
         13 . The electromagnetic actuator according to  claim 1 , wherein the retainer element is configured as a frame. 
     
     
         14 . The electromagnetic actuator according to  claim 1 , wherein the component housing section is a section of a cylinder head of an internal combustion engine. 
     
     
         15 . A cam phaser, comprising: the electromagnetic actuator according to  claim 1 .