| 摘要 |
A fluid filter insert for a fluid filter having a filter housing, a cover and a central standpipe with a locking device preventing a closing of the cover, comprising a hollow cylindrical filter material body, two end plates enclosing said filter material body at its ends, at least one protruding member carried on the filter insert. The filter insert is configured to be placed onto the standpipe, and the protruding member of the filter insert, when the filter insert is placed onto the standpipe, is configured to actuate the locking device in an unlocking direction and allowing a complete placing of the filter insert. When the filter insert is placed onto the standpipe, the protruding member is brought into engagement with the locking device, wherein the locking device is moved in the unlocking direction by the protruding member. |
| 主权项 |
1. A replaceable filter insert for use in a fluid filter having a filter housing and a cover, the filter housing having a central standpipe connected thereto arranged to receive the filter insert thereon, the standpipe having on a free side facing the cover an end piece that is axially displaceable relative to the standpipe, the end piece being preloaded by a force acting in an upward direction of expulsion, the end piece, when in its expelled position, being locked by a locking device that prevents it from being pushed further down the standpipe after a limited extent, and a connection of the cover to the filter housing then being prevented, the locking device being formed by locking tabs that form a part of the standpipe or the end piece, the locking tabs being preloaded by a force acting in the radial outward locking direction, and each locking tab, with its respective locking surface, preventing the end piece in its upward expelled position from being axially pushed down relative to the standpipe, wherein the locking tabs are capable of being moved in the radial inward direction into their unlocking position, and wherein, in order to form a filter circumvention valve, an end face of the end piece is fashioned as a valve body, the filter insert comprising:
a hollow cylindrical filter material body, two end plates enclosing said filter material body at its ends, at least one protruding member movable with the filter insert, a cover-side one of the end plates of the filter insert having a central opening that forms a valve seat for the valve body in order to form a filter circumvention valve, and the filter insert being configured to be placed onto the central standpipe connected to the filter housing, and the protruding member on the filter insert, when the filter insert is placed onto the standpipe, configured to actuate the locking device in the radial inward unlocking direction and allowing a complete placing of the filter insert, wherein when the filter insert is placed onto the standpipe, the protruding member is brought into engagement with the locking device, wherein the locking tabs are moved radially inward in the unlocking direction by the protruding member, enabling a pushing down of the end piece on the standpipe. |
