Patent DE-102006034485-A1 (DE)
Title: Oil filter assembly comprises a receiving chamber closed by a cover element with a spring-loaded support tube that is fixed in the receiving chamber for housing a radial filter element, which flows throughable by oil in a radial direction
Inventor: MAIER JAN
IPC: B01D27/10
Filed: 2006-07-21
Abstract: The oil filter assembly comprises receiving chamber (18) closed by cover element (14) with spring-loaded support tube (22) that is fixed in the receiving chamber for housing a radial filter element (20), which flows throughable by oil in radial direction. The support tube is fixed along the axial direction between operation and discharge positions in displaceable manner in such a way that the support tube closes a discharge opening in the operation position and opens the discharge opening in the discharge position when the receiving chamber is left open. The oil filter assembly comprises a receiving chamber (18) closed by a cover element (14) with a spring-loaded support tube (22) that is fixed in the receiving chamber for housing a radial filter element (20), which flows throughable by oil in a radial direction. The support tube is fixed along the axial direction between operation and discharge positions in displaceable manner in such a way that the support tube closes a discharge opening in the operation position when the receiving chamber is closed by the cover element, and opens the discharge opening in the discharge position when the receiving chamber is left open. The side of the cover element that faces the filter cartridge has a mounting surface for the support tube, which is formed in such a manner that the filter element is fixed on the support tube during closing of the receiving chamber. The support tube is directly displaced from the mounting surface and set to the operation position. The cover element and the mounting surface directly hold the support tube in the operation position. The support tube projects the filter element towards the cover element in the closed receiving chamber and the filter element placed on the support tube. The mounting surface of the support tube is formed by blades that taper inwardly along the radius or bars that taper axially downwards. The blades and the bars are arranged at the inner side of the cover element. Between the blades and bars, the oil that flows around the filter element can reach the free end of the support tube. The mounting surfaces and the filter element lie in different levels along the axial direction and/or the mounting surface of the support tube is arranged at the cover element. The base area of the receiving chamber and axially-extending connecting pins engage themselves in pin sockets, which are arranged at pods that protrude outwardly along the radius or at partially continuous collar of the support tube that protrudes outwardly along the radial direction. The pods or the collar partly serve for the placement of the side of the filter element that is turned away from the cover element. The housing of the receiving chamber is made of plastic and the connecting pins are designed at the housing. The free ends of the connecting pins have an expansion. The distance from the base area of the receiving chamber to the bottom edge of the expansion is slightly higher than the axially-extending thickness (D) of the pods or the collar. The expansion is produced by hot riveting after the insertion of the support tube. The pin sockets are produced in the connecting pins and are designed in such a manner that the support tube is rotated conditionally around its longitudinal axis. The cover element has engaging sections for conditional co-rotation of the support tubes and/or the filter element during rotation of the cover element. The side of the support tube that is turned away from the cover element and the region of the support tube that is not covered by the filter element, has an extension section, which is closed along the radial direction, which protrudes into a clear oil space with an oil outlet at its region turned away from the cover element. At the extension section, a continuous seal washer, which protrudes out along the radial direction and which separates the filter cartridge from the clear oil space in the operating position, is designed. The free end of the support tube has a closure section for locking the outlet opening in the operating position. A spring element is mounted around the extension section in the clear oil space. The side of the cover element that faces the receiving chamber has rear-sided gripping sections for rear-sided holding of the fi1ter element sections. With the help of the cover element, the filter element is pulled out and taken out of the receiving chamber during the removal of the cover element from the support tube. The side of the rear gripping sections facing the filter element and feed slants is intended in such a manner that the filter element is placed on the support tube. The rear-sided gripping sections hold the filter element sections at the rear side. The rear gripping sections are designed as spring latches with rear-sided locking regions. The taper downwards in a manner essentially parallel to the central longitudinal axis of the filter element and the cover element. The rear-side gripping sections are formed of joining bars, which are arranged on the cover element, which possess an edge that runs essentially parallel to the central longitudinal axis of the filter element and which has a socket that runs along the radial direction for rear-sided gripping of the filter element sections.