DE202005002955U1 - Filter insert for liquid filters, e.g. oil filters for car engines, has a drainage channel sealed by a plug which forms part of a special unit fixed to the insert by clamping or fixing tongues between the folds of the filter - Google Patents

Abstract

A filter insert for a liquid filter, with filter fabric between two end plates, inlet and outlet ducts for dirty and clean liquid and a drainage channel for emptying the filter, sealed by a plug forming part of a unit (60) attached to the rest of the insert by a connecting part (61), in which part (61) has a back part (62) outside the filter fabric (10') and one or more fixing or clamping tongues (63) projecting inwards between the folds of the fabric (10'). A filter insert (10) for a liquid filter (especially an oil filter), with two end plates (20, 30), at least one of which has a central opening (31), filter fabric (10') between the plates, a casing (11) with a lid (12) containing the insert (10), inlet and outlet ducts (13, 14) for dirty and clean liquid respectively, a drainage channel (15) for emptying the filter when replacing the insert, a plug (40) for closing this channel (15) on the bottom of the end plate facing the channel, which is pulled out when the insert is taken out of the casing and which forms part of a unit (60) with a connecting part (61) by means of which the unit (60) is attached to the rest of the insert (10) when assembled. In this insert, the connecting part (61) has a back part (62) located radially outside the filter fabric (10') and one or more fixing or clamping tongues (63) extending radially inwards between the folds (10") of the filter fabric (10'). Independent claims are also included for: (1) a filter insert (10A) as above in which part (61) has a back part (62) as above and at least two clamping arms (64) on opposite sides of the fabric (10') and together extending more than 180[deg] round the circumference of (10') (2) a filter insert (10B) as above with the back part (62) extending over the entire axial length of (10B) and with at least one clamping or locking arm (66) projecting from each end of the back part (62) parallel to the adjacent end plate (20, 30) (3) a filter insert (10C) as above in which the unit (60) comprises a supporting body (50) fitting inside the filter fabric (10') and forming the connecting part (61), with the lower end (51) projecting downwards through the central opening (31) and bearing a radially-aligned carrier (57) for the plug closure (40).

Description

The The present invention relates to a filter cartridge for a Liquid filters, in particular oil filters, with two end discs, at least one of which is a central one Having aperture, and with one between the end plates arranged filter body, the liquid filter a lidded filter housing in which the filter cartridge is to be arranged, as well as an inlet channel for cleaning and an outlet channel for cleaned liquid a discharge channel for emptying the filter when changing the Having filter insert, wherein as a closure member for the discharge channel a from the facing this end face of the filter insert axially outward towards extending locking mandrel is provided, the sealing in the installed state of the filter cartridge lies in a section of the discharge channel and that with the pulling out of the filter insert from the housing below Release of the discharge channel is pulled out of this, and the locking pin Part of a running with a connector unit is by means of of the connecting part to the rest of the filter cartridge is mounted in its assembled state.

A filter cartridge of the type indicated above is made DE 299 21 543 U1 known. In this known filter insert the closure mandrel is arranged centrally and extends concentrically to the lower end plate in the axial direction of the filter insert axially outward. Thus, this known filter insert is only usable for filters in which the cooperating with the locking mandrel portion of the discharge channel has a matching, located centrally under the filter cartridge position. An advantage of this known filter insert is that the closure mandrel comprehensive unit is connected to the rest of the filter cartridge. Thus, the filter element can be performed either with locking mandrel or without locking mandrel without different filter inserts must be made. Rather, if necessary, the unit is attached to the locking mandrel; if there is no need for a locking pin, simply no corresponding unit is attached to the filter element.

Out DE 39 03 675 C2 is an oil filter for cleaning lubricating oil, in particular for internal combustion engines of motor vehicles known. This oil filter is equipped with a filter housing arranged in the installed state at least approximately standing, also with a ring filter used to filter the oil, further with an oil inlet for the ring filter cartridge flowing around crude oil and with a connected to the central interior of the filter housing oil outlet for purified oil a pedestal at the lower end of the filter housing, further comprising an additional discharge channel, which is freed by removing the annular filter insert, from the filter crude oil space at the lower end of the filter housing. Further, in the filter insert to the lower end plate of the ring filter insert formed from the annular space axially downwardly projecting tube which engages in a cylindri's drain channel for the cleaned oil radially sealing. Further, it is provided here that at the lower end plate of the annular filter insert a protruding in the axial direction of the pin is formed, which protrudes sealingly in resting on the ring filter insert into the opening of the additional drain channel, and that are provided on the ring filter insert and the filter housing fixing means, the axial insertion of the Allow filter insert only in a position centering the pin on the opening of the drainage channel.

Of the previously described filter cartridge is suitable only for applications in which the additional spillway is arranged eccentrically relative to the filter insert. Because the pin is formed on the lower end plate of the filter insert, a special End disk are manufactured. With this end plate is then the Filter cartridge but only for filter housing usable in which a relative to the filter insert eccentrically arranged additional spillway is available. For Filter housing without An additional spillway the filter insert is no longer usable. For this reason, need for filters with an additional Spillway and for filters without the extra spillway different filter cartridges be prepared and kept, which increased manufacturing technology and logistical effort required.

For the present Invention therefore has the task of a filter cartridge of the to provide the aforementioned type, the above-mentioned Avoid disadvantages and in particular at a reduced manufacturing and logistical effort a more flexible Use of the filter cartridge is possible, both in filter housings with an eccentric discharge channel as well as in filter housings without such a discharge channel.

A first solution The object is achieved according to the invention with a filter cartridge of the beginning mentioned type, which is characterized in that the connecting part a radially outside on Filter cloth body lying back part and one or more of this back portion radially inward between folds of the filter cloth body having extending clamping or adhesive tongues.

An essential feature of the invention is that the unit of connecting part and locking mandrel is a separate component, which is connected only when needed with the filter cartridge. In order to In the manufacture of the filter insert, care must be taken not to use it later in a filter housing with a drainage channel or in a filter housing without a drainage channel. This allows a rational production and easier logistics in production, warehousing and distribution of the filter cartridge. About the connecting part, the unit is sufficiently safe and at the same time connected in a very simple manner with the rest of the filter cartridge, if there is a need for an equipment of the filter cartridge with the locking mandrel. Since the clamping or gluing tongues extend between the folds of the filter cloth body, no additional space for the accommodation is needed, so that the connection of the unit with the rest of the filter cartridge is very compact. This avoids having to make changes to an existing filter housing changes.

A The first development of the filter insert according to the invention proposes that the Clamping tongues through a pair of mirror-symmetrical, elastic-flexible, in the ground state abutting flat tongues are formed that the Tongue pair by moving the unit in the radial direction of the filter cartridge clamped inwardly on one of the folds of the filter cloth body is and that way the unit with the filter body connected is. In this version the unit can be particularly easily connected to the filter cloth body be, with a simple postponing for the preparation of the compound completely is sufficient. The clamping force applied by the clamping tongues ensures for one sufficient. secure hold of the unit without any further means or action are necessary.

A alternative development provides that the adhesive tongue by a single flat tongue is formed that the tongue by moving the Unit in radial direction of the filter insert in between two folds of the filter cloth body inserted with the interposition of at least one adhesive layer is and that way the unit with the filter body connected is. In this version the unit is simpler in construction because it is only one single flat adhesive tongue needed. This is a slightly higher Effort by the use of at least one adhesive layer opposite. in the However, the result here too is unity in a simple manner and sufficiently securely connected to the filter cloth body.

A another alternative embodiment suggests that the Adhesive tongues formed by a pair of mutually parallel tongues are at a distance from each other, the thickness of a fold of the filter cloth body corresponds to that Tongue pair by moving the unit in the radial direction of the filter cartridge inwardly on one of the folds of the filter cloth body with an interposition min least an adhesive layer is pushed and that so the unit connected to the filter cloth body is. In this version The unit again has a pair of two tongues that come with one the folds of the filter cloth body are to be glued. As a specific advantage, this version offers a particularly secure connection of the unit with the filter body. there can adapt to the wrinkle shape of the space between the two adhesive tongues wedge-shaped be trained to damage to sweat on the filter cloth.

at all explained above versions The unit can be advantageous regardless of the axial length and independently from the inside and outside diameter of the filter cloth body be used.

A second solution The object set above succeeds according to the invention with a Filter insert of the type mentioned, characterized is that the Connecting part a radially outside on the filter cloth body lying back part and at least two of this mutually opposite in the circumferential direction the filter material body over together more than 180 ° extending bracket arms having.

Also in this second filter insert according to the invention that's the locking pin and the connecting unit comprising a separate component, that with a usual Filter insert is connected, if there is a need for the locking mandrel. In contrast to the solution described above are the connecting means not here between the folds of the filter cloth body, but engage radially Outside around the outer circumference of the filter material body via a big enough Circumference angle around. Even with this configuration, the unit from connecting part and locking pin when needed quickly and easy with the remaining filter element get connected. An application of glue or other fasteners is not required here. additional can be an adhesive bond between the outside of the filter cloth body and be provided this facing the inside of the staple arms.

A preferred embodiment proposes that the clamping arms each have a bent shape adapted to the outer circumference of the filter material body and can be elastically flexibly deflected radially outwards and can be automatically springed in radially inward direction. In this embodiment, a particularly simple attachment of the unit to the rest of the filter cartridge is made possible because only a slight spread on the staple arms radially outward is necessary to the unit in the axial direction of the fil set on the filter cloth body. After this placement, the clamp arms jump back to their original position, in which they connect the unit sufficiently firmly and securely with the rest of the filter cartridge.

ever after design of the filter housing, in which the filter insert according to the invention it may be necessary or at least appropriate a relative rotation of the filter cartridge and unit relative to each other even without using glue to prevent. This is preferred provided that radially inside at least one of the bracket arms at least one radially to inside between two folds of the filter cloth body extending anti-rotation rib is arranged. Advantageously, the anti-rotation rib arrives at Attaching the unit to the filter cloth body practically automatically between two folds of the filter cloth body, with the desired Verdrehsicherung is already effected without further assembly steps are necessary for it.

The Unit according to the second solution is independent from the axial length and usable by the inner diameter of the filter cloth body. Also regarding of the outside diameter of the filter cloth body can the unit over at least a certain diameter range can be used.

A third solution The object set above succeeds according to the invention with a Filter insert of the type mentioned, characterized is that the Connecting part a radially outside on the filter cloth body lying, over the axial length having the filter insert extending back part, of which both axial ends at least one parallel to the respective immediately adjacent end plate of the filter insert extending Clamping or latching arm runs out.

Also in this solution is the unit comprising the connecting part and the locking mandrel separate component, which if necessary connected to the filter element becomes. To connect the unit with the filter cartridge will be here used the end plates, with which the two clamping or latching arms of the connecting part of the unit interact.

A further embodiment provides that the clamping or latching arms are formed by a pair of elastic-flexible arms which by moving the unit in the radial direction of the filter insert inside clamping and / or latching axially outside on the two end plates of the filter insert are pushed and that so the unit with the filter cartridge connected is. In this version is the effort for making the connection of the unit with the rest of the filter cartridge again very low, because here too a very simple radial pushing enough. Since the clamping or latching arms axially outside with the end discs in Intervene there is no risk of damage here for the Filter cloth body. For the two clamping or latching arms is in the axial direction of the filter cartridge seen only a very small height needed; also the back part can be kept very flat, so that in this embodiment of the Filter insert no changes in a filter housing, in which the filter insert according to the invention including the unit attached to it will become necessary.

For all above described solutions and their embodiments is preferably provided that of the back in each case a carrier part emanates, the outer circumference the discharge channel facing end plate of the filter insert engages around and the locking pin wearing. In this embodiment, the back part is on the shortest possible Away with the locking pin connected so that with Lowest material cost and space required by the filter housing Position of the locking pin can be adjusted. Different radial positions of the locking mandrel relative to the outer circumference the forehead disk can simply considered by different radial lengths of the support member become.

A fourth solution The object set above succeeds according to the invention with a Filter insert of the type mentioned, characterized is that the Unit one arranged inside the filter cloth body, at the same time the connecting part forming support body of Includes filter cartridge, the existence through the lower end of the support body the central opening in the un direct front disc axially protrudes below and that of the lower End of the support body radially outward running support part goes out wearing the locking pin.

Also in this solution according to the invention, a conventional filter insert can optionally be performed with a locking mandrel or remain without locking mandrel. The unit comprising the closure mandrel here also includes the support body, which is required anyway for many filter cartridges for reasons of differential pressure resistance. For filter cartridges that require a locking pin, a support body with locking pin is inserted into the interior of the filter cartridge, here by axial insertion from bottom to top; if a locking mandrel is not needed, a conventional support body without locking mandrel is used. Again, no additional, housing changes making necessary space for the connection of the closure mandrel comprehensive unit with the filter cartridge is needed. Advantageously, here an unchanged unit of support body and closure mandrel together with filter cartridges of different outer diameter. Changes in the radial distance of the locking mandrel from the central axis of the filter cartridge can be easily taken into account by changing the radial length of the support member.

For the purpose of preferably easier and cheaper Mass production is for all solutions described above and embodiments of the filter insert preferably provided that the unit respectively a one-piece injection molding made of plastic.

in the Following are embodiments of Invention explained with reference to a drawing. The figures of the drawing demonstrate:

1 a liquid filter in longitudinal section with a filter insert with closure mandrel in a first embodiment,

2 one from the locking pin 1 and an associated connection part comprising unit as a single part in a perspective view,

3 the filter cartridge with the unit attached to it 1 and 2 , also in perspective view,

4 the filter material body of the filter cartridge 3 together with the unit in plan view with omitted end plates,

5 a filter cartridge with a closure mandrel unit in a second embodiment in perspective view,

6 the unit comprising the locking mandrel 5 as a single part, also in perspective view,

7 a liquid filter with a filter cartridge and a closure mandrel comprehensive unit in a further embodiment, in longitudinal section,

8th the filter cartridge and the unit with the locking mandrel off 7 in itself, in perspective view,

9 the unit with the locking pin out 7 and 8th as an individual part in a side view,

10 a liquid filter with a filter cartridge and with a closure mandrel comprehensive unit in a further embodiment, in longitudinal section, and

11 the unit with the locking pin out 10 as an individual part in a perspective view.

1 shows a complete liquid filter, eg oil filter of an internal combustion engine, in longitudinal section with a top open, through a screw cap 12 closed housing 11 , Inside the case 11 is a filter cartridge 10 arranged for cleaning, for example, lubricating oil of an internal combustion engine. By a in 1 visible, lateral left and a lower part of the filter housing 11 run an inlet channel 13 for the liquid to be cleaned, an outlet channel 14 for the filtered liquid and a discharge channel 15 , which is used to empty the interior of the filter housing 11 when changing the filter cartridge 10 serves.

In the case 11 inserted filter insert 10 is the drainage channel 15 through one with the filter cartridge 10 connected locking pin 40 sealed liquid-tight. For this purpose has the locking pin 40 , which here has the shape of a cylinder, a circumferential groove 41 into which a sealing ring 42 is inserted.

The filter insert 10 is of conventional design and has a star-shaped folded filter body 10 ' , the upper side and lower side by an upper end disc 20 and a lower end disk 30 is enclosed. The upper end disc 20 is executed here closed and on its upper side it has a concentric ring of axially upwardly projecting, tongue-shaped locking elements 22 , integral with the front disc 20 are formed. By means of these locking elements 22 is the filter element 10 detachable with the screw cap 12 connected so that when loosening the screw 12 this the filter cartridge 10 in the axial direction with upward.

The lower end disc 30 of the filter insert 10 is with a central opening 31 executed. With this central opening 31 sits the filter cartridge 10 on the lower end 51 a supporting body 50 inside the filter insert 10 is located here and executed fixed to the housing.

In operation of the filter 1 the liquid to be purified flows from the inlet channel 13 Coming in the radial direction from outside to inside through the filter element 10 and from the interior of the filter cartridge 10 axially down through the support body 50 and then through the outlet channel 14 from. When flowing through the filter insert 10 Dirt particles in the filter material body 10 ' retained.

The above-mentioned locking pin 40 for the discharge channel 15 is part of a unit 60 next to the locking pin 40 also a connecting part 61 includes. By means of this connecting part 61 is the unit 60 with the filter cloth body 10 ' of the filter insert 10 connected. From the connecting part 61 is in 1 only a flat, radially outward on the filter material body 10 ' adjacent back part 62 visible, noticeable; the other elements of the connecting part 61 lie inside the filter cloth body 10 ' and are therefore in 1 not visible.

The back part 62 and the locking pin 40 are about a carrier part 67 connected to each other, the outer circumference of the lower end disc 30 surrounds and the axially and eccentrically to the central axis of the filter insert 10 downwardly extending locking mandrel 40 wearing. The unit 60 consists of one piece of plastic and is conveniently made as an injection molded part.

The 2 shows the unit 60 consisting of the locking pin 40 and the connecting part 61 , as an individual part in perspective view. Right is in 2 the locking pin 40 with his groove 41 for the sealing ring, not shown here. To the left, the carrier part closes 67 in the flat back part 62 passes. From the back part 62 extend two parallel clamping tongues parallel to each other 63 upwards, which abut each other in their basic state or at least approximately abut each other.

The through the back part 62 and the clamping tongues 63 formed connecting part 61 serves the unit 60 clamped on a fold 10 '' of the filter cloth body 10 ' sit up. This is the unit 60 in the radial direction of the filter cartridge 10 moved from outside to inside, with the two clamping tongues 63 pinching one of the wrinkles 10 '' of the filter cloth body 10 ' to pinch. This ensures a sufficiently safe and accurate seat of the unit 60 and thus also the locking pin 40 relative to the rest of the filter cartridge 10 taken care of. The unit 60 also here consists of one piece of plastic and is suitably made as an injection molded part.

3 shows in perspective view the filter cartridge 10 together with the attached unit 60 out 2 , The filter insert 10 consists of the filter body 10 ' and the two front discs 20 and 30 , Here also the upper end disc a central opening 21 Has. The filter body 10 ' has a variety of folds 10 '' on, one of which is the unit 60 wearing. The two clamping tongues 63 lie between the unit 60 wearing fold 10 '' and the two immediately adjacent further folds 10 '' , On the outer circumference of the filter cloth body 10 ' lies the flat, axially extending back part 62 , The back part 62 goes down into the about 90 ° radially inwardly bent support member 67 over, the locking thorn 40 wearing. Also here has the locking pin 40 the groove 41 with the sealing ring arranged therein 42 ,

4 shows in a plan view of the filter cloth body 10 ' with the attached unit 60 , wherein for reasons of clarity, the end plate 20 is omitted. As the 4 shows particularly clearly, there is the Filterstoffkörper 10 ' from a filter web, star-shaped to a large number of folds 10 '' folded.

On one of these folds 10 '' is the unit 60 by means of her two clamping tongues 63 clamped. This clamping can, like the 4 shows clearly, very simply by radial sliding of the clamping tongues 63 on the fold 10 '' be effected. Here are the two clamping tongues 63 elastic-flexible away from each other. Due to the self-restoring force of the clamping tongues 63 becomes the unit 60 clamped on the fold 10 '' held. If necessary, by means of adhesive, the connection between the unit 60 and the fold 10 '' to be improved. When using adhesive may also be due to a clamping action of the tongues 63 completely dispensed with.

4 also illustrates that the back part 62 is very flat and barely over the outer periphery of the filter cloth body 10 ' protrudes in the radial direction to the outside. This allows the attachment of the unit 60 on the filter cloth body 10 ' without changes to the associated filter housing 1 (see 1 ).

5 shows a perspective view of a filter cartridge 10 with one unit 60 in a modified version. The filter insert 10 is also of conventional design and has a star-shaped folded filter body 10 ' with an upper end disc 20 and a lower end disc 30 ,

The unit 60 here also includes the locking pin 40 and a connecting part 61 , This connection part 61 consists here of two clip arms 64 extending from a back part 62 extend opposite to each other in the circumferential direction and over a circumferential angle of more than 180 °, for example, about 270 °, the outer circumference of the filter cloth body 10 ' extend. From the back part 62 Here, too, the right-angled radially inwardly angled support member 67 from the axially downwards eccentric to the central axis of the filter cartridge 10 protruding locking pin 40 wearing. The locking pin 40 also has a groove here 41 with a sealing ring inserted in it 42 ,

The unit 60 according to 5 can be independent of the axial length and independent of the In nendurchmesser of the filter insert 10 be used as the shape of the unit 60 only to the outer diameter of the filter cartridge 10 is adapted.

6 shows the unit 60 out 5 as an individual part in perspective view. In the background is the back part 62 , from which in the circumferential direction opposite to each other, the two bracket arms 64 extend. From the lower end of the back piece 62 the carrier part runs 67 in the radial direction inwards and carries on its underside the locking pin 40 ,

At the in 6 left clamp arm 64 is at its radially inwardly facing side an anti-rotation rib 65 arranged, which extends in the axial direction. When attaching the unit 60 on the filter element 10 (see 5 ) passes the anti-rotation rib 65 between two adjacent folds 10 '' of the filter cloth body 10 ' and thus ensures that the unit 60 relative to the filter cartridge 10 can not twist after attaching.

Also the unit 60 according to 6 consists of a one-piece injection-molded part made of plastic, whereby the production is easy and whereby the staple arms 64 get the flexibility and flexibility needed for their function readily.

7 again shows a complete filter 1 in longitudinal section. Except for the unit 60 vote in 7 visible parts of the filter 1 with the execution according to 1 and it is because of the importance of not unity 60 reference numerals in 7 on the description of 1 directed.

The unit 60 includes also in the example according to 7 the locking pin 40 and a connecting part 61 , The connecting part 61 consists of a flat long back 62 extending over the entire axial length of the filter cartridge 10 extends. At the top and bottom of the back 62 is in each case a radially inwardly running clamping or latching arm 66 intended. By means of this pair of arms 66 is the unit 60 clamping and / or latching on the filter insert 10 put on and so relative to this sufficiently safe and accurately positioned.

8th shows a filter cartridge 10 and the unit 60 out 7 in a perspective view. The filter insert 10 Again, there is a star-shaped folded filter body 10 ' with a variety of wrinkles 10 '' and two of the filter cloth body 10 ' enclosing frontal discs 20 and 30 , It is in 8th , deviating from 7 , the upper end disc 20 without locking elements 22 and with a central opening 21 executed.

In the 8th right on the filter insert 10 attached unit 60 includes the locking mandrel visible below 40 with his groove 41 for the sealing ring, not shown here 42 as well as the back part 62 with both arms 66 , The two arms 66 run parallel to the axially outer surface of the two end discs 20 and 30 radially inward. The upper end disc 20 has in the illustrated embodiment, a concentric circumferential locking groove 26 into which the upper arm 66 of the connecting part 61 engages with a detent not visible here. This will be the connecting part 61 relative to the upper end disc 20 secured against automatic release.

The lower arm 66 of the connecting part 61 here forms at the same time the carrier part 67 , which also here eccentric, axially projecting locking mandrel 40 wearing.

9 shows the unit 60 according to 7 and 8th in itself as an individual part in a side view. Down in 9 lies the locking pin 40 with its sealing ring groove 41 , The connecting part 61 consists here of the long flat back part 62 and the two arms 66 coming from the two outer ends of the back piece 62 bent at right angles. The upper arm 66 has an axially inwardly facing latch 66 ' that with the locking groove 26 in the upper end disc 20 (see 8th ) of the filter cartridge 10 engages when the unit 60 on the filter insert 10 is attached.

The lower arm 66 at the same time forms the carrier part 67 that the connecting part 61 with the locking pin 40 combines. Also the unit 60 according to the 7 to 9 is expedient a one-piece injection molded plastic, whereby the two arms 66 and the back part 61 obtained the required for the assembly spring property easily.

In the execution according to the 7 to 9 is the unit 60 regardless of the outside diameter and inside diameter of the filter insert 10 usable.

A final embodiment of the unit 60 is in the 10 and 11 shown. The 10 again shows a complete filter 1 in longitudinal section, in which all parts of the housing 11 as well as the filter element 10 with the example in 1 to match. With regard to the reference numbers relating to these parts in 10 is therefore on the description of 1 directed.

Different from the previously described embodiments is in the example according to the 10 and 11 that the unit 60 here the central in the filter insert 10 arranged support body 50 includes. With its lower end 51 occurs the support body 50 in the axial direction down through the central opening 31 in the lower end disc 30 of the filter insert 10 through and so protrudes from the filter cartridge 10 downwards in front. This is the bottom end 51 of the support body 50 centering, but loose on a suitably shaped counterpart of the housing 11 placed.

From an axially below the lower end disc 30 lying area of the lower end 51 of the support body 50 go a carrier part 57 in the radial direction to the outside, which also here axially and eccentrically downwardly extending locking mandrel 40 wearing. Here is the locking pin 40 again in the form of a beveled at its lower end cylinder with a groove 41 and a circumferentially inserted sealing ring 42 executed.

The filter insert 10 is also here by means of the upper end disc 20 provided latching means 22 with the screw cap 12 connected so that when loosening the screw 12 the filter cartridge 10 together with the screw cap 12 is moved upward. At the same time is the support body 50 so with the filter cartridge 10 connected, that also the support body 50 and with it the locking thorn 40 together with the screw cap 12 and the filter cartridge 10 to be moved upwards. This will when loosening the screw 12 also here the derivation channel automatically 15 opened and inside the filter housing 11 Liquid located through the drainage channel 15 flow out. In this way, a white most liquid-free filter cartridge 10 out of the case 11 be removed.

11 shows the unit 60 out 10 as an individual part in a perspective view. Here it becomes clear that unity 60 Here, too, is a one-piece component, which expediently consists of plastic and is produced by injection molding. From the bottom 51 of the support body 50 goes in the radial direction outward of the carrier part 57 out, the locking thorn 40 with the sealing ring groove 41 wearing. Again, the locking pin runs 40 in the axial direction, but to the longitudinal center axis of the support body 50 eccentric, down.

In the execution according to the 10 and 11 is the unit 60 independent of the outer diameter of the filter element 10 usable.

1

filter all in all

10

filter cartridge

10 '

Filter cloth body

10 ''

wrinkles

11

casing

12

cover

13

intake port

14

outlet channel

15

Waterway

20

upper end disk

21

perforation

22

locking elements

26

locking groove

30

lower end disk

31

perforation

40

closure Dorn

41

groove

42

seal

50

support body

51

lower The End

57

support part

60

unit

61

connecting part

62

back

63

clamping tongues o. adhesive tongue (s)

64

clip arms

65

anti-rotation

66

clamping o. latching arms

67

support part

Claims (12)

Filter element ( 10 ) for a liquid filter ( 1 ), in particular oil filters, with two end discs ( 20 . 30 ), at least one of which has a central opening ( 31 ), and with one between the end discs ( 20 . 30 ) arranged filter body ( 10 ' ), wherein the liquid filter ( 1 ) with a lid ( 12 ) provided filter housing ( 11 ), in which the filter cartridge ( 10 ) and beside an inlet channel ( 13 ) for to be cleaned and an outlet channel ( 14 ) for purified liquid a discharge channel ( 15 ) for emptying the filter ( 1 ) when changing the filter cartridge ( 10 ), wherein as a closure member for the discharge channel ( 15 ) a facing away from this end face of the filter cartridge ( 10 ) axially outwardly extending locking mandrel ( 40 ) is provided, which in the installed state of the filter cartridge ( 10 ) sealing in a section of the discharge channel ( 15 ) and with the extraction of the filter insert ( 10 ) out of the housing ( 11 ) with release of the discharge channel ( 15 ) is pulled out of this, and wherein the locking mandrel ( 40 ) Part of one with a connecting part ( 61 ) unit ( 60 ), which by means of the connecting part ( 61 ) on the remaining filter cartridge ( 10 ) is mounted in its assembled state, characterized in that the Ver binding part ( 61 ) a radially outward on the filter material body ( 10 ' ) lying back part ( 62 ) and one or more of this back ( 62 ) radially inward between folds ( 10 '' ) of the filter body ( 10 ' ) extending clamping or gluing tongues ( 63 ) having. Filter insert according to claim 1, characterized in that the clamping tongues ( 63 ) by a pair of mutually mirror-symmetrical, elastically flexible, in the ground state abutting flat tongues ( 63 ) are formed, that the tongue pair ( 63 ) by moving the unit ( 60 ) in the radial direction of the filter cartridge ( 10 ) clamping inwards on one of the folds ( 10 '' ) of the filter body ( 10 ' ) and that so the unit ( 60 ) with the filter body ( 10 ' ) connected is. Filter insert according to claim 1, characterized in that the adhesive tongue ( 63 ) by a single flat tongue ( 63 ) is formed, that the tongue ( 63 ) by moving the unit ( 60 ) in the radial direction of the filter cartridge ( 10 ) in between two folds ( 10 '' ) of the filter body ( 10 ' ) is inserted with the interposition of at least one layer of adhesive and that so the unit ( 60 ) with the filter body ( 10 ' ) connected is. Filter insert according to claim 1, characterized in that the adhesive tongues ( 63 ) by a pair of mutually parallel tongues ( 63 ) are formed, which have a distance from each other, the thickness of a fold ( 10 '' ) of the filter body ( 10 ' ) corresponds to that the tongue pair ( 63 ) by moving the unit ( 60 ) in the radial direction of the filter cartridge ( 10 ) inward on one of the folds ( 10 '' ) of the filter body ( 10 ' ) is pushed with the interposition of at least one adhesive layer and that so the unit ( 60 ) with the filter body ( 10 ' ) connected is. Filter element ( 10 ) for a liquid filter ( 1 ), in particular oil filters, with two end discs ( 20 . 30 ), at least one of which has a central opening ( 31 ), and with one between the end discs ( 20 . 30 ) arranged filter body ( 10 ' ), wherein the liquid filter ( 1 ) with a lid ( 12 ) provided filter housing ( 11 ), in which the filter cartridge ( 10 ) and beside an inlet channel ( 13 ) for to be cleaned and an outlet channel ( 14 ) for purified liquid a discharge channel ( 15 ) for emptying the filter ( 1 ) when changing the filter cartridge ( 10 ), wherein as a closure member for the discharge channel ( 15 ) a facing away from this end face of the filter cartridge ( 10 ) axially outwardly extending locking mandrel ( 40 ) is provided, which in the installed state of the filter cartridge ( 10 ) sealing in a section of the discharge channel ( 15 ) and with the withdrawal of the filter cartridge ( 10 ) out of the housing ( 11 ) with release of the discharge channel ( 15 ) is pulled out of this, and wherein the locking mandrel ( 40 ) Part of one with a connecting part ( 61 ) unit ( 60 ), which by means of the connecting part ( 61 ) on the remaining filter cartridge ( 10 ) is mounted in its assembled state, characterized in that the connecting part ( 61 ) a radially outward on the filter material body ( 10 ' ) lying back part ( 62 ) and at least two of this mutually opposite in the circumferential direction of the filter material body ( 10 ' ) via together more than 180 ° extending bracket arms ( 64 ) having. Filter insert according to claim 5, characterized in that the clamping arms ( 64 ) one each on the outer periphery of the filter material body ( 10 ' ) have adapted curved shape and elastically flexible radially outwardly deflectable and automatically be spring-loaded radially inward. Filter insert according to claim 6, characterized in that radially inward on at least one of the clamping arms ( 64 ) at least one radially inwardly between two folds ( 10 '' ) of the filter body ( 10 ' ) extending anti-rotation rib ( 65 ) is arranged. Filter element ( 10 ) for a liquid filter ( 1 ), in particular oil filters, with two end discs ( 20 . 30 ), at least one of which has a central opening ( 31 ), and with one between the end discs ( 20 . 30 ) arranged filter body ( 10 ' ), wherein the liquid filter ( 1 ) with a lid ( 12 ) provided filter housing ( 11 ), in which the filter cartridge ( 10 ) and beside an inlet channel ( 13 ) for to be cleaned and an outlet channel ( 14 ) for purified liquid a discharge channel ( 15 ) for emptying the filter ( 1 ) when changing the filter cartridge ( 10 ), wherein as a closure member for the discharge channel ( 15 ) a facing away from this end face of the filter cartridge ( 10 ) axially outwardly extending locking mandrel ( 40 ) is provided, which in the installed state of the filter cartridge ( 10 ) sealing in a section of the discharge channel ( 15 ) and with the withdrawal of the filter cartridge ( 10 ) out of the housing ( 11 ) with release of the discharge channel ( 15 ) is pulled out of this, and wherein the locking mandrel ( 40 ) Part of one with a connecting part ( 61 ) unit ( 60 ), which by means of the connecting part ( 61 ) on the remaining filter cartridge ( 10 ) is mounted in its assembled state, characterized in that the connecting part ( 61 ) a radially outward on the filter material body ( 10 ' ), over the axial length of the filter cartridge ( 10 ) extending back part ( 62 ), of whose two axial ends in each case at least one parallel to the respective immediately adjacent end plate ( 20 . 30 ) of the filter cartridge extending clamping or latching arm ( 66 ). Filter insert according to claim 8, characterized in that the two clamping or latching arms ( 66 ) by a pair of elastically flexible arms ( 66 ) formed by moving the unit ( 60 ) in the radial direction of the filter cartridge ( 10 ) inwardly clamping and / or latching axially on the outside of the two end discs ( 20 . 30 ) of the filter insert ( 10 ) and that so the unit ( 60 ) with the filter cartridge ( 10 ) connected is. Filter insert according to one of the preceding claims, characterized in that from the back part ( 62 ) each a carrier part ( 67 ), the outer circumference of the discharge channel ( 15 ) facing end plate ( 30 ) of the filter insert ( 10 ) and the locking pin ( 40 ) wearing. Filter element ( 10 ) for a liquid filter ( 1 ), in particular oil filters, with two end discs ( 20 . 30 ), at least one of which has a central opening ( 31 ), and with one between the end discs ( 20 . 30 ) arranged filter body ( 10 ' ), wherein the liquid filter ( 1 ) with a lid ( 12 ) provided filter housing ( 11 ), in which the filter cartridge ( 10 ) and beside an inlet channel ( 13 ) for to be cleaned and an outlet channel ( 14 ) for purified liquid a discharge channel ( 15 ) for emptying the filter ( 1 ) when changing the filter cartridge ( 10 ), wherein as a closure member for the discharge channel ( 15 ) a facing away from this end face of the filter cartridge ( 10 ) axially outwardly extending locking mandrel ( 40 ) is provided, which in the installed state of the filter cartridge ( 10 ) sealing in a section of the discharge channel ( 15 ) and with the withdrawal of the filter cartridge ( 10 ) out of the housing ( 11 ) with release of the discharge channel ( 15 ) is pulled out of this, and wherein the locking mandrel ( 40 ) Part of one with a connecting part ( 61 ) unit ( 60 ), which by means of the connecting part ( 61 ) on the remaining filter cartridge ( 10 ) in its assembled state, characterized in that the unit ( 60 ) one inside the Filterstoffkörpers ( 10 ' ), at the same time the connecting part ( 61 ) forming support body ( 50 ) of the filter insert ( 10 ) comprises a lower end ( 51 ) of the supporting body ( 50 ) through the central breakthrough ( 31 ) in the lower end disc ( 30 ) protrudes axially downwards and that from the lower end ( 51 ) of the supporting body ( 50 ) a radially outwardly extending support member ( 57 ) starting from the locking mandrel ( 40 ) wearing. Filter insert according to one of the preceding claims, characterized in that the unit ( 60 ) Is a one-piece injection molded part made of plastic.