Filter

1. A filter comprising:

a filter cup;

a filter insert having at least one layer of filter material, said filter insert inserted into said filter cup and having a substantially cylindrical shape;

a terminal disk arranged at an end face of said filter insert and abutting against an axial end of said at least one layer of filter material, said terminal disk positively-lockingly connected to an axially outwardly protecting circumferential wall of an end of said filter cup;

said terminal disk having a circumferential rim wherein said circumferential rim is configured to engage said end of said filter cup and is provided with locking means that positive-lockingly connect said terminal disk and said filter cup;

wherein said circumferential rim of said terminal disk comprises ring segments,

wherein adjacent ring segments separated from one another by narrow radial slots extending though an outer circumferential rim of said terminal disk,

wherein said ring segments axially engage said end of said filter cup,

wherein said locking means are radially inwardly oriented snap-on hooks provided on said ring segments, and

wherein said filter cup has at least one radially outwardly oriented projection that is engaged by said snap-on hooks.

2. The filter according to claim 1 , wherein said ring segments have an end face provided with openings for demolding said snap on hooks.

3. The filter according to claim 1 , wherein

said terminal disk has an outer circumference provided with an axial section,

wherein said axial section rests against an inner wall of said filter cup.

4. The filter according to claim 1 in the form of an air oil separator box comprising a collecting chamber for separated oil.

5. The filter according to claim 1 , wherein said terminal disk comprises an integrally formed preseparator.

6. The filter according to claim 1 , wherein

on an exterior side of said filter cup a circumferentially extending projection is arranged and

wherein between free ends of said ring segments and said circumferentially extending projection a circumferentially extending groove is formed for receiving a sealing ring.

7. The filter according to claim 5 , wherein

said terminal disk has an axial section at an outer circumference of said terminal disk and a coaxially arranged socket inside said axial section,

wherein said pre-separator is comprised of a plurality of curved guiding elements that are curved in an axial direction of said filter insert and are arranged between said axial section and said coaxially arranged socket.

8. A filter comprising:

a filter cup;

a filter insert inserted into said filter cup and having a substantially cylindrical shape;

a terminal disk arranged at an end face of said filter insert and connected to an end of said filter cup;

said terminal disk having a circumferential rim wherein said circumferential rim is configured to engage said end of said filter cup and is provided with locking means that positive-lockingly connect said terminal disk and said filter cup,

wherein said circumferential rim of said terminal disk comprises ring segments,

wherein said ring segments axially engage said end of said filter cup,

wherein said locking means are radially inwardly oriented snap-on hooks provided on said ring segments,

wherein said filter cup has at least one radially outwardly oriented projection that is engaged by said snap-on hooks,

wherein on an exterior side of said filter cup a circumferentially extending projection is arranged and

wherein between free ends of said ring segments and said circumferentially extending projection a circumferentially extending groove is formed for receiving a sealing ring.

9. A filter comprising:

a filter cup;

a filter insert inserted into said filter cup and having a substantially cylindrical shape;

a terminal disk arranged at an end face of said filter insert and connected to an end of said filter cup;

said terminal disk having a circumferential rim wherein said circumferential rim is configured to engage said end of said filter cup and is provided with locking means that positive-lockingly connect said terminal disk and said filter cup,

wherein said terminal disk comprises an integrally formed preseparator,

wherein said terminal disk has an axial section at an outer circumference of said terminal disk and a coaxially arranged socket inside said axial section,

wherein said pre-separator is comprised of a plurality of curved guiding elements that are curved in an axial direction of said filter insert and are arranged between said axial section and said coaxially arranged socket.