Patent ID: 8858793

Claim:
A filter ( 10 ) for filtering fluids, comprising: a filter housing ( 12 ), comprising: at least two housing parts ( 14 , 16 ; 514 ), and a filter element ( 18 ; 518 ) which by means of a releasable detent connection ( 20 ) is attached in one of the housing parts that acts as a fastening housing part ( 14 ; 14 ) for the filter element ( 18 ; 518 ); wherein the detent connection ( 20 ) comprises at least two interacting detent components ( 32 , 36 ), and one of the detent components ( 32 ) is connected with the filter element ( 18 ; 518 ) and one of the detent components ( 36 ) with the fastening housing part ( 14 ; 514 ); and at least one of the detent components comprises at least one detent means ( 32 ) and one of the detent components ( 36 ) includes a recess ( 38 ) corresponding with the detent means ( 32 ), in which recess the detent means ( 32 ) hooks in a bayonet-like manner, and the recess ( 38 ) comprises the following areas: a locking area ( 40 ) for receiving the detent means ( 32 ) while the housing parts ( 14 , 16 ; 514 ) are connected; a retaining area ( 42 ) for receiving the detent means ( 32 ) during opening of the filter housing ( 12 ); a translation area ( 44 ) for releasing the detent means ( 32 ) in the recess ( 38 ); and an insertion/removal area ( 46 ) for resistance-free joining and separating of detent means ( 32 ) and recess ( 38 ); wherein a switching device ( 58 ; 558 ) comprises at least two corresponding switching components ( 60 , 78 ; 560 ); wherein one of the switching components ( 60 ; 560 ) is connected with the filter element ( 18 ; 518 ) and wherein one of the switching components ( 62 ; 562 ) is connected with the fastening housing part ( 14 ; 514 ); and one of the switching components ( 60 ; 560 ) has at least one switching lug ( 76 ; 576 ) extending radially relative to a rotation/insertion axis ( 30 ; 530 ) of the filter ( 10 ); and one of the switching components ( 62 ; 562 ) comprises a switching guide ( 78 ; 578 ) for guiding the switching lug ( 76 ; 576 ) such that the switching guide ( 78 ; 578 ), upon an impulse-like relative axial movement of the filter element ( 18 ; 518 ) in a direction toward the fastening housing part ( 14 ; 514 ), guides the switching lug ( 76 ; 576 ) and thereby effects a rotation of the filter element ( 18 ; 518 ) relative to the fastening housing part ( 14 ; 114 ) around the rotation/insertion axis ( 30 ; 530 ) for moving the detent means ( 32 ) from the insertion/removal area ( 46 ) into the locking area ( 40 ) or from the retaining area ( 42 ) into the insertion/removal area ( 46 ), depending on the position of the detent means ( 32 ) in the recess ( 38 ) before effecting the axial movement.