Filter System and Filter Element having a Coupling Device and Locking Device

Patent metadata

Field	Value
Publication number	US-2015231539-A1
Application number	US-201514623663-A
Country	US
Kind code	A1
Filing date	Feb 17, 2015
Priority date	Feb 20, 2014
Publication date	Aug 20, 2015
Grant date	—

Abstract

A fluid filter system has a filter element disposed in a filter housing with cover. A coupling device is provided with coupling element and corresponding coupling receptacle. The coupling device has a locking position and a release position. The coupling element engages the coupling receptacle in the locking position. The coupling element is released from the coupling receptacle in the release position. In the locking position, filter element and cover are coupled to each other. A locking device is provided with locking element and corresponding locking receptacle. The coupling device is moveable from the release position into the locking position by rotating the coupling element relative to the coupling receptacle about an axial direction and is releasable by rotating the coupling element relative to the coupling receptacle about the axial direction. The locking element locks the coupling device in the locking position by engaging the locking receptacle.

First claim

What is claimed is:

1 . A filter system for filtering a fluid, the filter system comprising:
a filter housing comprising a cover; a filter element disposed in the filter housing; a coupling device comprising at least two coupling parts, wherein the at least two coupling parts comprise a coupling element and a corresponding coupling receptacle; wherein the coupling device comprises at least one locking position and at least one release position, wherein the coupling element engages the coupling receptacle in the at least one locking position and wherein the coupling element is disengaged from the coupling receptacle in the at least one release position, wherein in the at least one locking position the filter element and the cover are coupled to each other; a locking device comprising at least two locking parts; wherein the at least two locking parts comprise at least one locking element and at least one corresponding locking receptacle; wherein the coupling device is configured to move from the at least one release position into the at least one locking position by rotating the coupling element relative to the coupling receptacle about an axial direction and is further configured to be released from the at least one locking position into the at least one release position by rotating the coupling element relative to the coupling receptacle about the axial direction; wherein the at least one locking element locks the coupling device in the locking position by engaging the at least one locking receptacle.

2 . The filter system according to claim 1 , wherein the coupling receptacle is divided axially into coupling segments, wherein the coupling element comprises axially oriented coupling jaws engaging between the coupling segments of the coupling receptacle in the at least one release position.

3 . The filter system according to claim 1 , wherein the coupling device, when moved from the at least one release position into the at least one locking position, experiences a progressive force in the axial direction.

4 . The filter system according to claim 1 , wherein the coupling receptacle comprises a spherical cross-section.

5 . The filter system according to claim 1 , wherein the coupling receptacle comprises an ellipsoid cross-section comprising a short axis and a long axis, wherein the short axis is oriented in axial direction.

6 . The filter system according to claim 1 , wherein the coupling receptacle is arranged on the filter element and the coupling element is arranged on the cover.

7 . The filter system according to claim 6 , wherein the at least one locking element is arranged on the filter element and the at least one locking receptacle is arranged on the cover.

8 . The filter system according to claim 6 , wherein the at least one locking element is arranged on the cover element and the at least one locking receptacle is arranged on the filter element.

9 . The filter system according to claim 1 , wherein the coupling receptacle is arranged on the cover and the coupling element is arranged on the filter element.

10 . The filter system according to claim 9 , wherein the at least one locking element is arranged on the filter element and the at least one locking receptacle is arranged on the cover.

11 . The filter system according to claim 9 , wherein the at least one locking element is arranged on the cover and the at least one locking receptacle is arranged on the filter element.

12 . The filter system according to claim 1 , wherein the coupling device is arranged center-symmetrical in the filter system.

13 . The filter system according to claim 1 , wherein the coupling receptacle is arranged on the filter element and comprises a bore configured to vent the filter system.

14 . The filter system according to claim 1 in the form of an oil filter or a fuel filter for an internal combustion engine.

15 . A filter element of a filter system, the filter system comprising a filter housing that comprises a cover and is configured to receive the filter element, wherein the cover of the filter housing comprises a first coupling part of a coupling device and wherein the cover of the filter housing further comprises a first locking part of a locking device; the filter element comprising:
an end disk comprising a second coupling part of the coupling device, the second coupling part of the coupling device configured to interact with the first coupling part of the coupling device; wherein the end disk further comprises a second locking part of the locking device that is configured to interact with the first locking part of the locking device.

16 . The filter element according to claim 15 , wherein the coupling device is configured to move from a release position into a locking position by rotating the first and second coupling parts relative to each other about an axial direction and is further configured to be released from the at least one locking position into the at least one release position by rotating the first and second coupling parts relative to each other about the axial direction, and wherein the first and second locking parts interact with each other to lock the coupling device in the locking position.

17 . The filter element according to claim 16 , wherein the first coupling part is a coupling receptacle and the second coupling part is a coupling element.

18 . The filter element according to claim 17 , wherein the first locking part is a locking element and the second locking part is a locking receptacle.

19 . The filter system according to claim 17 , wherein the first locking part is locking receptacle and the second locking part is a locking element.

20 . The filter element according to claim 16 , wherein the first coupling part is a coupling element and the second coupling part is a coupling receptacle.

21 . The filter element according to claim 20 , wherein the first locking part is a locking element and the second locking part is a locking receptacle.

22 . The filter system according to claim 20 , wherein the first locking part is locking receptacle and the second locking part is a locking element.

Assignees

• Mann & Hummel Gmbh

Inventors

• Hasenfratz Robert
• Wagner Fabian
• Roesgen André
• Thalmann Christian
• Pflueger Frank
• Skorpíková Petra

Classifications

• B01D35/30 Primary

  Filter housing constructions · CPC title

• B01D35/005 Primary

  Filters specially adapted for use in internal-combustion engine lubrication or fuel systems · CPC title

• B01D2201/295

  with projections extending in a radial outward direction, e.g. for use as a guide, spacing means · CPC title

• B01D2201/4015

  Bayonet connecting means · CPC title

• B01D2201/305

  Snap, latch or clip connecting means · CPC title