WO2020201478A1

WO2020201478A1 - Filter with a filter housing made of two filter housing parts and a filter insert which is replaceably arranged in the filter housing, and filter insert for the filter

Info

Publication number: WO2020201478A1
Application number: PCT/EP2020/059498
Authority: WO
Inventors: Steven GROSSE-FRINTROP; Michael Böhm; Martin Rölver; Andreas Stephan; Franz-Josef RICHTER
Original assignee: Hengst Se
Priority date: 2019-04-05
Filing date: 2020-04-03
Publication date: 2020-10-08
Also published as: DE102019108955A1

Abstract

The invention relates to a filter (1) with a two-part filter housing (10) and a filter insert (2) which is replaceably arranged therein (10). The filter housing parts (10.1, 10.2) can be connected together and can be separated from each other by a transversal movement along sliding guides (11.1, 11.2), and at least one locking means (4) is provided which blocks the housing parts (10.1, 10.2) from being separated in a blocking position and allows the filter housing parts (10.1, 10.2) to be separated in a release position. The invention additionally relates to a filter insert (2) for interacting with the filter (1). The filter (1) according to the invention is characterized in that the filter insert (2) is or has the locking means (4) or guides a separate locking means (4), the filter insert (2) can be moved relative to the filter housing (10) by means of an actuation element (3) which can be actuated from outside of the filter housing (10), and the locking means (4) can be moved between the blocking position and the release position by moving the filter insert (2) relative to the filter housing (10).

Description

Description:

Filter with a filter housing made up of two filter housing parts and with an interchangeable filter insert and filter insert for the filter arranged in the filter housing

The present invention relates to a filter with a filter housing, consisting of a first filter housing part and a detachably attached second, cup-shaped filter housing part with a bottom, and with a filter insert replaceable in the filter housing, the filter housing parts being pushed relative to each other across their longitudinal direction can be connected and separated from each other by sliding guides seen on them, with at least one locking means being provided, the filter housing parts being locked against separation from one another in a locking division of the locking means, and separation of the filter housing parts from one another being released in a release position of the locking means. The invention also relates to a filter insert for interaction with the filter.

A filter of the type mentioned at the outset is known from document US Pat. No. 4,416,775 A1. The document shows a filter assembly or unit with end caps held together by connecting rods with a filter housing between them and sealed to them. A filter cartridge is located in the housing. Each end cap is designed to provide a slideway for receiving a slide element which seals against the end piece and which abuts one end of the filter housing. The sliding elements can be attached to the end caps. The sliding elements can be laterally removed from the assembly together with the filter housing, with the end caps remaining connected in an air or gas line which contains the fluid to be filtered. In this way, the filter cartridge in the filter housing can be replaced without disconnecting the end caps from the air or gas line and without dismantling the cage formed by the end caps and the connecting rods. Several parallel to one another and transversely to the longitudinal direction of the filter serve as locking means Threaded bolts and associated nuts, by means of which the removable filter housing and the rest of the arrangement can be releasably fixed against each other.

A disadvantage of this prior art is that the loosening and connecting of the locking means is relatively complex and that they comprise loose parts, here nuts, which can easily be lost.

For the present invention, therefore, the object is to create a filter of the type mentioned, which avoids the disadvantages of the prior art ver and in which the locking means are faster, easier and more reliable to handle. In addition, a filter insert coordinated with the filter and interacting with the filter should be specified.

The solution of the first part of the problem relating to the filter succeeds in accordance with the invention with a filter of the type mentioned at the beginning, which is characterized in that the filter insert is or has the locking means or a separate locking means leads that the filter insert by means of an from outside half of the filter housing actuatable actuator is adjustable relative to the Filtergehäu se and that by means of the understanding of the filter insert relative to the filter housing, the locking means can be adjusted between its locking pitch and its release position.

In the filter according to the invention, the function of the locking is advantageously transferred completely or, in the case of a separate locking means guided by the filter insert, at least partially, to the filter insert already present in the filter. Since the filter insert can be adjusted relative to the filter housing by means of an actuating element which can be actuated from outside the filter housing, in order to adjust the locking means for its part, the filter can also be used comfortably and cleanly for maintenance personnel. The filter insert thus has an additional function and conventional screw locking means, which are required in the prior art, can be dispensed with. This simplifies and improves both the manufacture and the handling of the filter.

In a further embodiment of the filter according to the invention it is provided that the actuating element is arranged in the bottom of the second, cup-shaped filter housing part relative to the second filter housing part about an axis of rotation extending in its longitudinal direction and / or axially displaceable and sealingly is mounted captive and that by rotating and / or axially displacing the actuating element, the filter insert can be adjusted in its circumferential direction and / or axial direction and thus the locking means can be adjusted between its locking position and its release position. This ensures particularly simple and reliable handling of the filter and its locking means.

The invention further proposes that a locking element is arranged on the filter insert as a locking means, which in the locking division covers a seam between the first filter housing part and the second filter housing part and which in the release position is out of alignment with the seam between the first filter housing part and the second filter housing part and lies in the second, cup-shaped filter housing part. Because the locking element covers the seam between the first filter housing part and the second filter housing part in its locking division, the two filter housing parts can be displaced relative to one another transversely to their longitudinal direction, i.e. H. in the release direction, mechanically reliably prevented by the locking element. In the release position, the filter insert including the locking element is located in the second filter housing part, so that the two filter housing parts can then be moved transversely relative to one another in order to separate them from one another.

Alternatively, the locking element can also be provided in the cup-shaped, second filter housing part, for example as a slidable bolt near the interface to the first filter housing part, which then moves the filter insert or a guide element provided on it into a locking division by adjusting the filter insert from the actuating element is brought.

A further development of the filter suggests that the locking element is designed to be circumferential and that the outer circumference of the locking element is designed with at least one seal or as a seal, the at least one seal in the locking division being the interface between the first filter housing part and the second filter housing part overlapping radially sealing against the inner circumference. The shape of the ring-shaped circumferential locking element and the seal (s) on it is of course adapted to the contour of the inner circumference of the first and second filter housing part in the area on both sides of the seam. The contour can be round or also have other shapes, such as oval or polygonal. Alternatively, the locking element can cover only part of the seam or not directly at the seam, but in the locking division against a locking contour specially provided for this in the first filter housing part. For example, if the seam is designed as an inclined sliding guide with an incline to the horizontal of 20 degrees or more, in particular special 30 degrees or more, the locking element can be designed so that it is stored in the release position of the filter housing parts in the higher part of the cup-shaped, second filter housing part and, for example, by simply twisting hen in a locking division in the lower Part of the cup-shaped, second filter housing part is spent. Since the locking element then projects beyond the edge of the filter housing, it can rest against a locking contour at this point on the first filter housing part.

The design of the aforementioned seal (s) can be different. The seal on the outer circumference of the locking element is preferably designed as a single preassembled elastomer seal or as two separate preassembled, axially spaced apart elastomer seals or as one or more directly molded thermoplastic elastomer lips. In each embodiment of the seal or seals on the locking element mentioned here, in addition to the locking function, sealing of the two filter housing parts against one another is guaranteed in their interconnected state. At the same time, it is ensured here that the seal is replaced and renewed with every filter maintenance that involves changing the filter insert without any additional work.

The invention further provides for the filter that the actuating element in the interior of the second filter housing part has first engagement elements, that second engagement elements are arranged on the filter insert and that the first and second engagement elements can be brought into and out of engagement in at least one first rotational position relative to one another and in their engaged state in other rotational positions than the first rotational position relative to one another in an axially tensile and shear-proof engagement with one another. This enables both a simple connection and separation of the filter insert with or from the actuating element as well as the adjustment of the filter insert relative to the filter housing required for locking and unlocking the locking means. The locking and unlocking of the locking means is preferably carried out by axially adjusting the filter element relative to the filter housing, for this purpose the filter element is expediently guided in the second filter housing part so that it cannot be rotated or rotated to a limited extent and is axially displaceable.

For the aforementioned guidance, in particular for the purpose of simple design and manufacture, it is preferably further provided that axially extending first guide elements are arranged at least over an area of the inner circumference of the second, cup-shaped filter housing part, in particular near the bottom, and that on the filter insert radially outwardly projecting, with play or greater play between the first guide elements protruding second guide elements are arranged, the guide elements together form a rotation lock or rotation angle limitation for the filter element relative to the second Filterge housing part.

Furthermore, it is preferably provided that the filter insert has a hollow, tubular filter material body, preferably made of a zigzag-shaped folded filter material web, which is sealingly framed by two end disks on the front side, and that the second engagement elements are arranged on the end disk partially facing the bottom of the second filter housing or are molded. The Filterstoffkör by can have a hollow cylindrical shape, but alternatively also have other hollow shapes, the end disks expediently corresponding in their outline shape with the cross-sectional shape of the filter material body.

In a specific development of the filter, one embodiment provides that the first engagement elements on the actuating element are a plurality of guide pins distributed in the circumferential direction, pointing inwards or outwards in the radial direction, and that the second engagement elements on the filter insert are arranged radially to match the guide pins outwardly or inwardly white, in the circumferential direction over part of the circumference of the filter insert verlau Fende, at least at one end in the circumferential direction and / or in the axial direction are open guide grooves. This achieves with a relatively simple form of the handle elements that the filter insert and the actuating element can easily be brought into and out of engagement with one another and that in the engaged state, rotating the actuating element causes the filter insert to move axially relative to the filter housing. In an alternative embodiment of the filter, it is provided that the first engagement elements on the actuating element have a plurality of radially outwardly or inwardly pointing, circumferentially over part of the circumference of the actuating element, open at least at one end in the circumferential direction and / or in the axial direction There are guide grooves and that the second engagement elements on the filter insert are a plurality of guide pins distributed in the circumferential direction to match the guide grooves and pointing inwards or outwards in the radial direction. This achieves the same advantages as in the configuration described above.

So that the filter insert is reliably axially adjusted during the aforementioned rotation of the actuating element, it is further provided that the second handle elements on the filter insert or the guide grooves forming the first engagement elements on the actuating element have a helical course.

In many cases where filters are used, there is only limited space for installation and movement. In order to take account of this requirement, the invention provides that the sliding guides on the first filter housing part and the second filter housing part are designed and arranged in such a way that the two filter housing parts are offset from their separated position in a mutually transverse to their longitudinal direction and partially overlap Position can be brought together axially and placed against each other and can be transferred from this position by transverse displacement relative to each other into their connecting position and in reverse order from their connecting position into their separating position. This means that for separating the second filter housing part from the first filter housing part and for connecting them to one another, only a relatively small sideways movement space is required, the extent of which is, for example, only about half the diameter of the filter housing in the transverse displacement direction or even less. To increase stability, several sliding guides or partial guides can be arranged one above the other.

A further contribution to simple handling of the filter is achieved in that a part of the actuating element located outside the filter housing is preferably designed as a handwheel and / or with or as a rotary tool attachment. It is also preferably provided that a through hole is made in the bottom of the second filter housing part, that an axially central bearing part of the actuating element lies in the through hole and that at least one bearing sealing ring is arranged between the inner circumference of the through hole and the outer circumference of the bearing part.

In particular, for reasons of simple manufacture and assembly of the filter, it is provided that the actuating element has an axially outer actuating element part and an axially inner actuating element part which are connected to one another in a rotationally fixed and axially fixed manner. The actuator parts can be prefabricated separately, positioned at the bottom of the filter housing in the area of the implementation hole inside and outside and then connected to each other, for. B. latched or glued or welded.

A further contribution to simple and error-free handling of the filter is that the actuating element and / or the second filter housing part are / is preferably equipped with signal elements by means of which the locking division and / or the release position of the locking device can be seen - and / or can be displayed audibly and / or haptically.

In the filter according to the invention, the filter housing or at least its second filter housing part and the filter insert can have a round or non-round, in particular polygonal or oval, outline shape when viewed in cross section. These increased shaping possibilities result in particular from the fact that no relative rotation is necessary for connecting and disconnecting the filter housing parts of the filter according to the invention to produce and loosen a screw connection between the filter housing parts that has been provided up to now in common filters. In addition, a non-round shape of the filter housing and filter insert can offer improved space utilization by accommodating an enlarged filter surface with the same amount of installation space.

In order to prevent the installation of unsuitable foreign filter inserts in the filter according to the invention, the interacting or contacting parts of the filter insert and filter housing can be designed in the form of a key and lock coding. This means that only a specific filter insert designed and configured in a suitable manner and shape fits into the filter housing. To solve the second part of the problem relating to the filter insert, the invention proposes a filter insert for interaction with a filter according to any one of claims 1 to 15, the filter insert being exchangeable in the filter housing and the filter insert being characterized in that it is a Locking means is designed or has a locking means or is designed for guiding a separate locking means and that in the installation state the filter insert stood by means of an understanding of the filter insert relative to the filter housing, the locking means between its locking division, in which the Fil tergehäuseteile are locked against separation from each other, and his Release position, in which a separation of the filter housing parts from one another is released, is adjustable.

The filter insert according to the invention is designed for the intended interaction with the filter according to the invention explained above, in particular designed as or with the locking means or designed for guiding egg nes separate locking means.

Furthermore, a locking element is preferably arranged as Verriege management means on the filter insert, by means of which a seam between the first filter housing part and the second filter housing part can be covered in the installed state of the filter insert in the locking division and which, for taking the release position, does not coincide with the seam between the first filter housing part and the second filter housing part can be brought and can be received in the second, cup-shaped filter housing part.

In a further embodiment of the filter insert, it is provided that the locking element is designed to be circumferential and that the outer circumference of the locking element is designed with at least one seal or as a seal, the at least one seal being the interface between the first filter housing part in the installed state of the filter insert in the locking division and the second filter housing part can be placed against its inner circumference so as to cover it in a radially sealing manner. The shape of the annular locking element and the seal (s) on it is of course adapted to the contour of the inner circumference of the first and second filter housing part in the area on both sides of the seam between the two interconnected filter housing parts. The shape of the inner circumference of the first and second filter housing part in the area of both On the other hand, the seam and the outer circumference of the locking element on the Fil tereinsatz can be round or have other shapes, such as oval or polygonal.

In a further embodiment, the seal on the outer circumference of the locking element is designed as a single preassembled elastomer seal or as two separate preassembled, axially spaced apart elastomer seals or as one or more directly molded thermoplastic elastomer lips.

It is further proposed that second engagement elements are arranged on the filter insert, which interact with first engagement elements arranged on an actuating element inside the second filter housing part, the first and second engagement elements being engageable and disengaging in at least one first rotational position relative to one another and are in their engaged state in other rotational positions than the first rotational position relative to one another in an axially tensile and shear-proof engagement with one another.

A further development provides that on the filter insert radially outwardly protruding second guide elements are arranged, which in the installed state of the filter insert cooperate with axially extending first guide elements at least over an area of the inner circumference of the second, cup-shaped filter housing part, in particular near the ground, the first guide elements on the filter insert radially outwardly protruding second guide elements with play or greater play protrude between the first guide elements and wherein the first and second guide elements together form an anti-twist device or twist angle limitation for the filter insert relative to the second filter housing part.

For the filter insert it is further provided that it has a hollow, tubular filter material body, which is sealingly framed by two end disks on the front side, and that the second engagement elements are arranged or formed on the end disk facing the bottom of the second filter housing part when the filter insert is installed.

The second engagement elements on the filter insert are preferably designed as guide grooves pointing radially outwards or inwards, running in the circumferential direction over part of the circumference of the filter insert, at least at one end in the circumferential direction and / or in the axial direction, which when installed of the filter insert with first engagement elements formed on the actuating element, formed by radially inwardly or outwardly transmitting, circumferentially distributed guide pins.

Alternatively, the second engagement elements on the filter insert are a plurality of circumferentially distributed guide pins that point inwards or outwards in the radial direction and that, when the filter insert is installed, have several radially outwards or inwards pointing in the circumferential direction over part of the circumference of the actuating element extending first engagement elements formed at least at one end in the circumferential direction and / or in the axial direction open guide grooves on the actuating element interact.

In a related development, the guide grooves forming the second engagement elements on the filter insert have a helical course.

Finally, the invention provides for the filter insert that, viewed in cross section, it has a round or non-round, in particular polygonal or oval, outline shape.

In the following, exemplary embodiments of the invention are explained using a drawing. The figures in the drawing show:

Figure 1 shows a filter with a two-part filter housing and a replaceable filter insert, not visible here, arranged in it, in the assembled state, in a side view,

FIG. 2 shows a first filter housing part of the filter from FIG. 1, as an individual part, in a view slightly obliquely from below,

Figure 3 shows a second filter housing part of the filter from Figure 1, as a single part, in a view slightly obliquely from above,

Figure 4 shows a filter insert of the filter from Figure 1, as an individual part, in side view,

FIG. 5 shows the filter insert from FIG. 4, viewed at an angle from above, FIG. 6 shows the second filter housing part of the filter from FIG. 1, together with a filter insert in a first phase of its insertion into the second filter housing part, in longitudinal section,

7 shows the second filter housing part from FIG. 6 with the filter insert in a second phase of its insertion, in a longitudinal section,

FIG. 8 shows the second filter housing part from FIG. 6 with the filter insert inserted therein, in a state that is not yet locked, connected to the first filter housing part from FIG. 2, in a longitudinal section,

FIG. 9 the first and second filter housing parts with the inserted therein

Filter insert, during an axial displacement of the filter insert to block the connection between the filter housing parts, in longitudinal section,

FIG. 10 shows the filter with the filter housing parts and the filter insert in the finally assembled, operational state, in longitudinal section,

FIG. 11 shows the filter in a second embodiment, with a non-round, four-cornered housing outline, viewed at an angle from below,

FIG. 12 shows the first filter housing part of the filter from FIG. 11, as an individual part, in an oblique view from below,

13 shows the second filter housing part of the filter from FIG. 11, as an individual part, in a view at a slight angle from above,

FIG. 14 shows the filter insert of the filter from FIG. 11, as an individual part, in a view at a slight angle from above,

FIG. 15 shows a modified second filter housing part, with a square outline, in plan view,

FIG. 16 shows a further modified second filter housing part, with an octagonal outline, in plan view, FIG. 17 shows the lower part of a second filter housing part with an actuating element in a modified embodiment, in longitudinal section, and FIG

FIG. 18 shows the lower part of a second filter housing part with an actuating element in a further modified embodiment, in longitudinal section.

In the following description of the figures, the same parts in the various drawing figures are always provided with the same reference symbols, so that not all reference symbols have to be explained again for each drawing figure.

Figure 1 shows a filter 1 with a two-part filter housing 10 and a replaceable filter element arranged therein, not visible here, in the assembled state, in a side view. The filter 1 here has an essentially circular outline.

The first, upper in Figure 1 filter housing part 10.1 has on its lower side here a first sliding guide 11.1, which interacts with a second sliding guide 11.2 on the top of the second, lower filter housing part 10.2, the two sliding guides 11.1, 11.2 releasable connecting means between the two Form housing parts 10.1, 10.2. In the embodiment shown in Figure 1, the second, lower housing part 10.2 can be separated from the first filter housing part 10.1 by moving it transversely to the longitudinal direction of the filter housing 10 to the left, provided that a locking means, not visible here, is in its release or release position. As Figure 1 illustrates, ge is sufficient for separating the two filter housing parts 10.1, 10.2 from each other their transverse displacement relative to each other by half or even less of the diameter of the filter housing 10, because the sliding guides 11.1, 11.2 distributed over the filter housing parts 10.1, 10.2 are.

On its free, here upper end face, the first filter housing part 10.1 has a connecting flange 16 with a radially outer circumferential seal 16 ', with a raw medium inlet 12 located radially inward from the seal 16' and with a radially inner, central clean medium outlet 12 '. Here the connection flange 16 is designed so that the filter 1 can be screwed onto a counter connection flange of a device such as an internal combustion engine instead of a common screw-on interchangeable cartridge. For example, the filter can serve as an oil filter for the lubricating oil of the internal combustion engine.

The second filter housing part 10.2 is cup-shaped with a round outline here and is connected at its upper, open end to the first, upper filter housing part 10.1 by means of the sliding guides 11.1, 11.2.

In the lower end of the second filter housing part 10.2 of the outer Actuate transmission element part 31 of an actuating element 3 is visible, the function of which will be explained below.

Figure 2 shows the first filter housing part 10.1 of the filter 1 from Figure 1, as a single part, in a view slightly obliquely from below. The first filter housing part 10.1 is now shown in such a viewing direction that the associated first sliding guide 11.1 is clearly visible.

In the center of the first filter housing part 10.1 is the clean medium outlet 12 ', which is covered here by a valve disk. The connection flange 16, which is not further visible here, is located on the upper side of the first filter housing part 10.1.

Figure 3 shows the second filter housing part 10.2 of the filter 1 from Figure 1, as a single part, in a view slightly obliquely from above.

On the upper, free edge 15 of the second filter housing part 10.2, the associated second sliding guide 11.2 runs.

The interior of the second filter housing part 10.2, which is still empty here, is used to accommodate a filter element.

In the lower end region of the second filter housing part 10.2, the outer actuating element part 31 of the actuating element 3, designed as a rotatable handwheel, is visible again. Figure 4 shows the filter insert 2 of the filter 1 from Figure 1, as a single part in Seitenan view. The filter insert 2 has a hollow, tubular, here hollow-cylindrical, filter material body 20 made of a zigzag-shaped folded filter material web, which is framed by two end disks 21, 22 in a sealing manner.

At the top of the filter insert 2, an annular umlau fendes locking element 40 is arranged as locking means 4 or is formed on its end plate 22 there, which forms its radially outermost part in relation to the rest of the filter insert 2.

The locking element 40 is used to cover a seam between tween the first filter housing part 10.1 and the second filter housing part 10.2 in a locking division and thus to prevent their separation by sliding sideways. In a release position, the locking element 40 is out of alignment with the seam between the first filter housing part 10.1 and the second filter housing part 10.2 and then lies in the second, cup-shaped filter housing part 10.2.

On the end plate 21 of the filter insert 2, which in the installed state faces a bottom of the second, cup-shaped filter housing part 10.2 and is lower in FIG. 4, second guide elements 24, here in the form of radially outwardly protruding blades distributed in the circumferential direction of the end plate 21, are integrally formed In Figure 6 to 10 visible first guide elements 14 on the inner circumference of the second Fil tergehäuseteils 10.2 form a rotation lock or rotation angle limitation for the filter insert 2 relative to the second filter housing part 10.2.

Furthermore, the end plate 21 has a hollow-cylindrical extension 25 on the underside with second engagement elements 26. The latter are designed as radially outwardly white send, each in the circumferential direction helically over part of the circumference of the extension 25 running, at their one, lower end 26 'in the axial direction open guide grooves. These guide grooves serve to cooperate with first engagement elements 36 in the form of guide pins on an axially inner actuating element part 32 located in the second filter housing part 10.2, which is shown in FIGS. 6 to 10 and is described in more detail below with reference to these figures. FIG. 5 shows the filter insert 2 from FIG. 4, now in an oblique view from above. At the top of the filter insert 2, on its end plate 22 there, the ring-shaped encircling locking element 40 is visible as locking means 4, which in relation to the rest of the filter insert 2 forms its radially outermost part. The end disk 22 is provided with a central opening 22 'through which filtered medium, after flowing through the filter material body 20, can flow in the radial direction from the outside to the inside from the interior of the filter insert 2 to the clean medium outlet of the filter. Concentric to the central opening 22 ', this surrounding, on the Obersei te of the upper end plate 22 of the filter insert 2, a sealing collar 23 is arranged, here integrally formed.

At the lower end of the filter insert 2 in FIG. 5, the first, lower end disk 21 with the radially protruding, wing-shaped second guide elements 24 and with the axially protruding extension 25 with the groove-shaped second engagement elements 26 arranged on its outer circumference is visible.

FIG. 6 shows the second filter housing part 10.2 of the filter 1 from FIG. 1, together with a filter insert 2 in a first phase of its insertion into the second filter housing part 10.2, in a longitudinal section.

The second filter housing part 10.2 is cup-shaped and is open at the top and has a bottom 10.3 at the bottom. Centrally in the bottom 10.3 is a through hole 13 through which the actuating element 3 he stretches. The actuating element 3 has an axially outer actuating element part 31 which is adapted to the outer contour of the base 10.3 and is designed here as a manually operable handwheel. An axially central bearing part 33 of the actuating element 3 is located in the through hole 13 under the interposition of a bearing sealing ring 34. An axially inner actuating element part 32 of the actuating element 3 is located in the lower region of the interior of the second filter housing part 10.2.

The axially outer actuating element part 31 and the axially central bearing part 33 of the actuating element 3 are made in one piece with one another and are connected to the axially inner actuating element part 32 in a rotationally fixed and axially fixed manner, here latched. In the through hole 13, the actuating element 3 can be rotated about an axis of rotation 30 which coincides with the longitudinal center axis of the second filter housing part 10.2 and the filter insert 2 therein.

On the axially inner actuating element part 32 of the actuating element 3, the first engagement elements 36 are arranged in the form of radially inwardly pointing pins, which cooperate with the second engagement elements 26 in the form of the grooves on the extension 25 of the filter insert 2, but not yet in the state according to FIG are in engagement with one another, since the filter insert 2 is only partially inserted into the second filter housing part 10.2.

Over a lower region of the inner circumference of the second filter housing part 10.2, first guide elements 14 in the form of ribs or webs extend in the axial direction and are distributed over the circumference. These first Füh approximately elements 14 act together with the previously described second guide elements 24 on the first, lower end plate 21 of the filter insert 2 men. In the state of engagement with one another, the guide elements 14 at 24 form a rotation lock or angle of rotation limitation for the filter insert 2 relative to the second filter housing part 10.2.

The upper end of the filter housing part 10.2 forms its upper edge 15, on wel chem the associated second sliding guide 11.2 is located.

The filter insert 2 carries, on its end disk 22 adjacent to the edge 15, the ring-shaped circumferential locking element 40 which serves as the locking means 4 and which carries a seal 41 with a rectangular cross-section on its outer circumference. In the exemplary embodiment according to FIG. 6, the locking element 40 is made in one piece with the end plate 22 via material bridges with medium-permeable spaces between them, preferably as a plastic injection-molded part. In the center of the end plate 22 is its opening 22 '.

The locking element 40 can also be designed to be movable on the filter insert 2, so that when the height of the filter insert 2 is adjusted, the locking element 40 and the filter insert 2 can also be adjusted over different heights. The lower end disk 21 of the filter insert 2 in FIG. 6 is designed as a closed disk and is connected on the top to a lattice-shaped support body 27 arranged in the interior of the filter material body 20, here latched. At its upper end, the support body 27 is also verras tet with the upper end plate 22.

From the underside of the lower end disk 21, the hollow cylindrical extension 25 extends concentrically downwards, here in one piece. On its outer circumference, the extension 25 has the groove-shaped second engaging elements 26 already described.

FIG. 7 shows the second filter housing part 10.2 from FIG. 6 with the filter insert 2 in a second phase of its insertion, also in longitudinal section. The filter insert 2 is now inserted so far into the second filter housing part 10.2 that the upper edge of the locking element 40 is flush with the upper edge 15 of the second filter housing part 10.2.

At the same time, during the further insertion of the filter insert 2 into the second filter housing part 10.2, the second engagement elements 26 on the filter insert 2 and the first engagement elements 36 on the actuating element 3 come into engagement with one another. For this purpose, the peg-shaped first engagement elements 36 on the actuating element 3 and the one shown in FIG 4 and 5 visible axially open ends 26 'of the second engagement elements 26 on the extension 25 brought into congruence with one another in the circumferential direction in order to bring the engagement elements 36, 26 into engagement with one another. By subsequently rotating the actuating element 3 relative to the second filter housing part 10.2, which cannot be rotated or can only be rotated to a limited extent, the peg-shaped first engagement elements 36 migrate along the second engagement elements 26 formed by the helical grooves and thus ensure an axial displacement of the filter insert 2 in the second filter housing part 10.2 downwards in the direction towards the bottom 10.3 until the position shown in FIG. 7 of the filter insert 2 relative to the second filter housing part 10.2 is reached.

FIG. 8 shows the second filter housing part 10.2 from FIG. 6 with the filter insert 2 inserted therein in a state that is not yet locked to the first filter housing part 10.2 from FIG. 2, again in longitudinal section. With the two th filter housing part 10.2, the first filter housing part 10.1 is now shifted relative to one another in the horizontal of the plane of the drawing by Querver Sliding guides 11.1, 11.2 connected. This transverse displacement for connecting the two filter housing parts 10.1, 10.2 is possible here without hindrance because the filter insert 2 is located completely in the lower, second filter housing part 10.2 and does not protrude upward beyond this, i.e. it is outside the range of movement of the sliding guides 11.1, 11.2.

The sliding guides 11.1, 11.2 run here in a direction with a slight inclination to the perpendicular to the longitudinal axis of the filter 1 and thus slightly inclined to the horizontal of the plane of the drawing in FIG. 8. Alternatively, the sliding guides 11.1, 11.2 can also have a greater slope or inclination to the vertical run to the longitudinal axis of the filter 1.

In particular from an inclination of 15 degrees and above, a locking element can be implemented in a simple manner, which can act by pure twisting without adjusting the height of the filter insert 2.

Figure 9 shows the first and second filter housing parts 10.1, 10.2 with the filter insert 2 inserted therein during an axial displacement of the filter insert 2 to block the connection between the filter housing parts 10.1, 10.2, in a longitudinal section. In comparison to its position in FIG. 8, the filter insert 2 is now displaced by a certain distance in the axial direction upwards in the direction of the first filter housing part 10.1. This axial displacement of the filter insert 2 is generated by rotating the actuating element 3 in a direction which is opposite to the rotation of the actuating element 3 described in connection with FIG. Together with the filter insert 2, the locking element 40 arranged on the upper end disk 22 is now moved upwards and into a position in which it, with its circumferential seal 41, the seam 15 'between the first filter housing part 10.1 and the second filter housing part 10.2 already covered.

Figure 10 shows the filter 1 with the filter housing parts 10.1, 10.2 and the filter insert 2 in the finally assembled, operational state, also in longitudinal section. The filter insert 2 is now brought into its maximum upwardly displaced position by means of the actuating element 3, in which the locking element 40 with the interposition of the seal 41 symmetrically and in equal parts on the inner circumference of the two filter housing parts 10.1, 10.2 on both sides of the parting plane or seam 15 'between this filter housing parts 10.1, 10.2 is applied. In this place ment of the filter insert 2, the two filter housing parts 10.1, 10.2 are locked against transverse displacement relative to one another, that is, secured in their connecting position. At the same time, the seal 41 on the outer circumference of the locking element 40 seals the parting plane or seam 15 'between the two filter housing parts 10.1, 10.2, so that no medium can escape from the interior of the filter 1 to the outside.

Surrounding the central opening 22 ', the filter element 2 has the sealing collar 23 which, in the locking pitch, rests in a sealing manner on a mating contour of the first filter housing part 10.1. The sealing collar 23 not only seals the clean side against the raw side of the filter 1, but also fulfills the function of a further locking element, by which a transverse displacement of the housing parts 10.1, 10.2 relative to one another is blocked.

In order to safely avoid that the filter insert 2 can automatically move out of its now occupied locking position, locking means 39 or friction means or locking means are expediently provided between the actuating element 3 and the second filter housing part 10.2, which prevent undesired automatic rotation of the actuating element 3 and thus prevent axial adjustment of the filter insert 2 during operation of the filter 1.

The actuating element 3 has for this purpose on the inner, the bottom 10.3. facing th side of its axially outer actuating element part 31 a plurality of arranged distributed over the order at defined points, in the example four, locking means 39, here in the form of locking tongues. The latching means 39 engage in a toothed ring 19 provided on the housing base 10.3. When rotating the actuating element 3, an acoustic and haptic feedback to the operator is generated by the springing back of the locking means 39 while sliding over the teeth of the ring gear 19. By defined end stops, which are realized by higher teeth in the ring gear 19 that cannot be overcome by the locking means 39, the operator easily recognizes the end positions of the actuating element 3. In addition, the actuating element 3 must be used to adjust the actuating element 3 through the locking tongues engaging in the ring gear 19 39 a certain adjusting force can be applied, so that an undesired automatic adjustment of the actuating element 3, for example due to vibrations occurring during operation, is effectively avoided. There is also the possibility that the actuating element 3 and / or the second filter housing part 10.2 are / is equipped with further signal elements not shown here, by means of which the reaching or taking of the locking division and / or the release position of the locking means 4 is visible and / or can be audibly indicated.

For filter operation, the filter 1 is connected by means of the connection flange 16 on the top of the first filter housing part 10.1 to a counter-connection flange, not shown here, for example on an internal combustion engine, here by means of an internal thread provided in the central clean medium outlet 12 'with an external thread nipple of the Counter connection flange screwed. The filter 1 serves in particular as a replacement for conventional screw-on filter cartridges that can only be replaced as a whole, which is both economically and ecologically disadvantageous.

Medium to be filtered, for example lubricating oil of an internal combustion engine, flows through the connection flange 16 through the radially outer raw medium inlet 12 into the interior of the filter 1 and first reaches the outer circumference of the Fil tereinsatzes 2 within the second filter housing part 10.2. From there, the medium to be filtered flows in the radial direction from the outside to the inside through the filter material body 20 of the filter insert 2, with dirt particles contained in the medium to be filtered being retained in the filter material body 20. The lattice-shaped support body 27 in the interior of the filter material body 20 supports the here hollow cylindrical filter material body 20 against collapsing. The filtered medium then enters the interior of the hollow filter material body 20 and flows there upward through the clean medium outlet 12 ′ via the connection flange 16.

A raw side and a clean side of the filter 1 are in the area of the first filter housing part 10.1 by sealingly cooperating, ringförmi ge, not specifically numbered walls on the top of the upper end plate 22 and inside the first filter housing part 10.1 ge separates medium-tight from each other. The sealing engagement of the two walls mentioned here with one another is advantageously also produced by means of the axial displacement of the filter insert 2 by the actuating element 3.

To maintain the filter 1 by replacing the filter insert 2, the filter insert 2 is first moved downwards by turning the actuating element 3 until the Locking element 40 is below the parting plane or seam 15 '. Then the lower, second filter housing part 10.2 together with the filter insert 2 located therein can be separated from the first filter housing part 10.1 remaining on the mating connection flange by transverse displacement.

The medium remaining in the second housing part 10.2 can then be poured into a separate medium collecting container, whereby the filter insert 2 cannot fall out of the second filter housing part 10.2 due to its still existing engagement with the actuating element 3.

To release the filter insert 2 from the second filter housing part 10.2, the actuating element 3 is then rotated in the opposite direction of rotation until the second engagement elements 26 of the filter insert 2 disengage from the first engagement elements 36 of the actuation element 3. The filter insert 2 can now simply by gravity from the second filter housing part 10.2 forth, z. B. in a collecting container for used filter cartridges 2, can be dropped without a maintenance person having to touch the dirty filter cartridge 2.

FIG. 11 shows the filter 1 in a second embodiment, here with a filter housing 10 with a non-round, approximately quadrangular housing outline with slightly rounded corners, in an oblique view from below.

In this filter 1, too, there are two filter housing parts 10.1, 10.2 arranged one above the other, which are releasably connected to one another via sliding guides 11.1, 11.2.

In the bottom 10.3 of the second, cup-shaped filter housing part 10.2, an actuating element 3 is also rotatably mounted here in a medium-tight manner, of which only its axially outer actuating element part 31 is visible in FIG.

A connection flange 16 is again provided on the free end face of the first filter housing part 10.1, which faces upwards here.

Figure 12 shows the first filter housing part 10.1 of the filter 1 from Figure 11 as an individual part, in a view obliquely from below. On the underside of the first filter housing part 10.1 the first sliding guide 11.1 is formed radially on the outside. The clean medium outlet 12 'is located in the center of the first filter housing part 10.1.

FIG. 13 shows the second filter housing part 10.2 of the filter 1 from FIG. 11 as an individual part, in a view at a slight angle from above. On the upper edge 15 of the second Filterge housing part 10.2 whose sliding guide 11.2 is formed, which cooperates with the previously mentioned sliding guide 11.1 of the first filter housing part 10.1 to connect the filter housing parts 10.1, 10.2 with each other.

In the interior of the second filter housing part 10.2, a filter insert 2 is already arranged here, which here, analogous to the position according to FIG. 7, with its locking means 4 does not protrude upwards beyond the upper edge 15 of the second filter housing part 10.2, i.e. it assumes a position , in which the connection of the first and second filter housing part 10.1, 10.2 by means of the sliding guides 11.1,

11.2 can take place without hindrance.

Here, too, the locking means 4 is formed by an annular circumferential Verriege treatment element 40, which is of course adapted to the shape of the, according to the outer contour, the square course of the inner circumference of the second Filterge housing part 10.2.

The axially outer actuating element part 31 of the actuating element 3 is again visible on the underside in FIG.

FIG. 14 shows the filter insert 2 of the filter 1 from FIG. 11 as an individual part, in a view at a slight angle from above.

The upper end plate 22 in FIG. 14 is again made in one piece with the locking means 4 in the form of the ring-shaped locking element 40, which runs along a rectangle, here a square, with rounded corners, with a circumferential seal 41 arranged on its outer circumference. In the center of the end plate 22, the opening 22 'is also located here, which is connected to the clean medium outlet of the filter in the installed state.

At the bottom in FIG. 14, the lower end disk 21 of the filter insert 2 with the extension 25 extending downward from the end disk 21 is visible. On the outer circumference of the extension 25, the second engagement elements 26 are in the form of In the circumferential direction helically extending grooves with axially downwardly open ends 26 'formed. As FIG. 14 illustrates, a filter insert 2 can be accommodated in a filter housing with a non-round, for example square, outline, which has an enlarged filter surface of its filter material body 20 without requiring an enlarged installation space compared to a filter housing with a round outline.

Apart from the different outlines or contours of the filter housing parts 10.1, 10.2 and the filter insert 2, the properties and functions of the filter 1 and its components according to FIGS. 11 to 14 correspond to the properties and functions of the previously described embodiment, to the description of which reference is made in this regard.

FIG. 15 shows a second filter housing part 10.2, also with an approximately square outline, in a top view, the peripheral areas between the rounded corners here having a slight outward curvature, which is particularly important for the mechanical stability and dimensional stability of the filter housing when exposed to pressurized medium to be filtered contributes.

FIG. 16 shows a further second filter housing part 10.2 in plan view, now with an octagonal outline with rounded corners, as a further example of the outlines conceivable in the filter according to the invention.

FIG. 17 shows the lower part of a second filter housing part 10.2 with an actuating element 3 in a modified embodiment, in longitudinal section. In this embodiment, the actuating element 3 is in its axially central position tion part 33 by means of a screw thread 37 in the bottom 10.3 of the second Filterge housing part 10.2 mounted and guided and seals abge by means of a bearing sealing ring 34. The axially inner actuating element part 32 presses against a central extension 25 on the underside of the lower end plate 21 of the filter insert 2, wel cher is acted upon by a restoring device, not shown, such as a spring, with a force in the direction of the actuating element 3.

By rotating the actuating element 3 about its axis of rotation 30 by means of manual actuation of the axially outer actuating element part 31 in the form of a handle, depending on the direction of rotation, the filter element 2 relative to which it accommodates the second filter housing part 10.2 in the axial direction upwards or downwards. ben in order to adjust a locking means provided here on the upper end of the filter insert 2, not shown in FIG. 17, between its release position and its locking pitch.

It is evident to a person skilled in the art that in the embodiment according to FIG. 17, further functions, such as a fluid drain, can easily be provided on the actuating element 3.

Finally, FIG. 18 shows the lower part of a second filter housing part 10.2 with an actuating element 3 in a further embodiment, also in longitudinal section. The actuating element 3 is designed here as an axially displaceable, but not ver rotatable component. The axially outer actuating element part 31 and the axially central bearing part 33 of the actuating element 3 are guided here in the form of a pin and guided under sealing by the bearing sealing ring 34 through the through hole 13 in the bottom 10.3 of the second filter housing part 10.2. The axially inner actuating element part 32 is formed here with radially outwardly extending arms which, with their radially outermost end, engage in groove-shaped guide elements 14 extending in the axial direction on the inner circumference of the second housing part 10.2. Furthermore, the axially inner actuating element part 32 is locked here with the lower end disk 21 of the filter insert 2, whereby a tensile and shear-proof connection between the actuating element 3 and the filter insert 2 is formed. The lower end disk 21 of the filter insert 2 in turn engages at its radially outer edge with the second guide elements 24 formed there, likewise in the first guide elements 14. As a result, both the filter insert 2 and the actuating element 3 are non-rotatable or with a limited angle of rotation, but axially displaceable, guided in the second filter housing part 10.2.

Overall, the actuating element 3, the first guide elements 14 and the lower end plate 21 with their second guide elements 24 together with a return device (not shown), such as a spring, form a mechanism as is known from ballpoint pens.

For the axial displacement of the filter insert 2, at the upper end of which, which is not shown in FIG. 18, a locking means is also provided, manually or by a power drive on the axially outer actuating element part 31 of the actuating element 3, a purely axial direction, as required in one direction or the other, acting force exerted leading to a corresponding Axial displacement of the actuating element 3 and of the filter insert 2 connected to it in a tensile and shear-proof manner with the locking means.

A signaling device 35 in the form of a marked area is also provided on the actuating element 3 on its axially outer actuating element part 31. The axially outer actuating element part 31 is in a low-lying position in a release position so that the signaling device 35 protrudes through the through hole 13 in the cup-shaped, second filter housing part 10.2 and is clearly visible, as shown in FIG. In the locking division, the actuating element 3 is in an axially higher position, so that the signal device 35 is then located in the second filter housing part 10.2 and is no longer visible from the outside.

As FIGS. 17 and 18 illustrate, there is great design freedom in the filter 1 according to the invention in the design of the actuating element 3 and the engagement elements 26, 36 required to interact with the filter insert 2.

List of reference symbols:

Character designation

1 filter

10 filter housings

10.1 first (upper) filter housing part

10.2 second, cup-shaped filter housing part

10.3 soil from 10.2

1 1.1 first sliding guide on 10.1

1 1.2 second sliding guide on 10.2

12 Raw medium inlet

12 Clean medium outlet

13 through hole in 10.3 for 3

14 first guide elements inside on 10.2

15 margin of 10.2

15 'interface between 10.1 and 10.2

16 Connection flange on 10.1

16 'seal on 16

19 ring gear

2 filter insert

20 filter material bodies

21 first, lower end plate

22 second, upper end plate

22 central opening in 22

23 sealing collar

24 second guide elements at 21

25 continuation on 21

26 second engagement elements on 25

26 'axially open end of 26

27 support body in 20

3 actuator

30 axis of rotation of 3

31 axially outer actuating element part of FIG axially inner actuating element part of FIG. 3, axially central bearing part of FIG

Bearing seal on 13, 33

Signaling device

first engagement elements on 3

Screw thread between 3 and 10.3

Locking means

Locking element

Seal at 40

Claims

Patent claims:

1. Filter (1) with a filter housing (10), consisting of a first Filterge housing part (10.1) and a detachably attached second, cup-shaped filter housing part (10.2) with a base (10.3), and with a housing in the filter (10 ) interchangeably arranged filter insert (2), the filter housing parts (10.1, 10.2) being connectable and separable from one another by sliding relative to one another transversely to their longitudinal direction along sliding guides (11.1, 11.2) provided on them, with at least one locking means (4 ) is provided, with the filter housing parts (10.1, 10.2) in a blocking pitch of the locking means (4) are locked against separation from each other and separation of the filter housing parts (10.1, 10.2) from each other is enabled in a release position of the locking means (4) ,

characterized,

- that the filter insert (2) is or has the locking means (4) or a separate locking means (4) leads,

- That the filter insert (2) can be adjusted relative to the filter housing (10) by means of an actuating element (3) which can be actuated from outside the filter housing (10), and

- That by means of the understanding of the filter insert (2) relative to the Filterge housing (10), the locking means (4) is adjustable between its locking division and its release position.

2. Filter (1) according to claim 1, characterized in that the actuating element (3) in the bottom (10.3) of the second, cup-shaped filter housing part (10.2) relative to the second filter housing part (10.2) about an axis of rotation extending in its longitudinal direction (30) rotatable and / or axially displaceable ver sealingly arranged and captive and that through Rotation and / or axial displacement of the actuating element (3) of the filter insert (2) adjustable in its circumferential direction and / or axial direction and thus the locking means (4) can be adjusted between its locking pitch and its release position.

3. Filter (1) according to claim 1 or 2, characterized in that the filter insert (2) has a locking element (40) as locking means (4) is arranged, which in the locking division a seam (15 ') between the first filter housing part (10.1) and the second filter housing part (10.2) and which in the release position is out of alignment with the seam (15 ') between the first filter housing part (10.1) and the second filter housing part (10.2) and in the second, cup-shaped filter housing part ( 10.2).

4. Filter (1) according to claim 3, characterized in that the Verriege treatment element (40) is ring-shaped circumferentially and that the outer circumference of the locking element (40) is designed with at least one seal (41) or as a seal (41), wherein in the barrier division the at least one seal (41) the seam (15 ') between the first filter housing part (10.1) and the second filter housing part (10.2) rests radially sealingly against the inner circumference thereof.

5. Filter (1) according to claim 4, characterized in that the seal (41) on the outer circumference of the locking element (40) as a single vormon-oriented elastomer seal or as two separate preassembled, axially spaced apart elastomer seals or as one or more directly molded thermoplastic elastomer lips.

6. Filter (1) according to one of claims 1 to 5, characterized in that the actuating element (3) in the interior of the second filter housing part (10.2) has first engagement elements (36), that on the filter insert (2) second A handle elements ( 26) are arranged and that the first and second A handle elements (36, 26) can be brought into and out of engagement in at least one first rotational position relative to one another and in their engaged state in rotational positions other than the first rotational position relative to one another in an axially tensile and shear-proof engagement with each other.

7. Filter (1) according to claim 6, characterized in that the filter insert (2) is guided in the circumferential direction in a non-rotatable or limited rotatable and axially displaceable manner in the second filter housing part (10.2).

8. Filter (1) according to claim 7, characterized in that axially extending first guide elements (14) are arranged at least over one, in particular near the bottom, area of the inner circumference of the second, cup-shaped filter housing part (10.2) and that the filter insert (2) is radial Outwardly protruding, with play or greater play between the first guide elements (14) protruding second guide elements (24) are arranged, the guide elements (14, 24) together a rotation lock or rotation angle limitation for the filter insert (2) relative to form the second filter housing part (10.2).

9. Filter (1) according to one of claims 6 to 8, characterized in that the filter insert (2) has a hollow, tubular filter material body (20) which is sealingly framed by two end disks (21, 22) on the front side, and that the second engagement elements (26) are arranged or formed on the end plate (21) facing the base (10.3) of the second filter housing part (10.2) or on an axial extension (25) of the end plate (21) connected to or integral with the end plate.

10. Filter (1) according to one of claims 6 to 9, characterized in that the first engagement elements (36) on the actuating element (3) are a plurality of distributed in order circumferential direction, in the radial direction inwardly or outwardly pointing guide pins and that the second Engagement elements (26) on the filter insert (2) arranged to match the guide pins, pointing radially outwards or inwards, in the circumferential direction over part of the circumference of the filter insert (2), at least at one end in the circumferential direction and / or guide grooves are open in the axial direction.

11. Filter (1) according to one of claims 6 to 9, characterized in that the first engagement elements (36) on the actuating element (3) have a plurality of radially outwardly or inwardly pointing, in the circumferential direction over part of the circumference of the actuating element (3) running, at least at one end in the circumferential direction and / or in the axial direction open guide are grooves and that the second engagement elements (26) on the filter insert (2) are a plurality of circumferentially distributed to match the guide grooves, in the radial direction inwardly or outwardly pointing guide pins.

12. Filter (1) according to claim 10 or 11, characterized in that the second engagement elements (26) on the filter insert (2) or the first A handle elements (36) on the actuating element (3) forming guide grooves egg NEN helical course.

13. Filter (1) according to one of claims 1 to 12, characterized in that the sliding guides (11.1, 11.2) on the first filter housing part (10.1) and on the second filter housing part (10.2) are designed and arranged in such a way that the two filter housing parts (10.1 , 10.2) from their disconnected position in egg ner mutually transverse to their longitudinal direction offset, each other partially overlapping position axially merge and rest against each other and can be transferred from this position by transverse displacement relative to each other in their connection position and in the reverse sequence from their connection stel development into their disconnected position .

14. Filter (1) according to one of claims 1 to 13, characterized in that the actuating element (3) and / or the second filter housing part (10.2) are / is equipped with signal elements, by means of which reaching or taking the locking division and / or the release position of the lock can be displayed visibly and / or audibly and / or haptically by means of (4).

15. Filter (1) according to one of claims 1 to 14, characterized in that the filter housing (10) or at least its second filter housing part (10.2) and the filter insert (2) seen in cross section a round or non-round, in particular polygonal or oval , Have an outline shape.

16. Filter insert (2) for interaction with a filter (1) according to one of claims 1 to 15, wherein the filter insert (2) in the filter housing (10) can be arranged interchangeably,

characterized, - That the filter insert (2) is designed as a locking means (4) or has a locking means (4) or is designed to guide a separate locking means (4) and

- That in the installed state of the filter insert (2) by means of an understanding of the filter insert (2) relative to the filter housing (10) the locking means (4) between its locking division in which the filter housing parts (10.1, 10.2) are locked against separation from one another, and its Lö seststellung, in which a separation of the filter housing parts (10.1, 10.2) from one another is released, is adjustable.

17. Filter insert (2) according to claim 16, characterized in that a locking element (40) is arranged as locking means (4) on the filter insert (2), by means of which, when the filter insert (2) is installed, a seam (15 ') between the first filter housing part (10.1) and the second filter housing part (10.2) can be covered and wel ches can be brought out of congruence with the seam (15') between the first filter housing part (10.1) and the second filter housing part (10.2) to assume the release position and in the second, cup-shaped Filterge housing part (10.2) can be received.

18. Filter insert (2) according to claim 17, characterized in that the locking element (40) is designed to be annular circumferential and that the outer circumference of the locking element (40) is designed with at least one log device (41) or as a seal (41), wherein in the installed state of the filter insert (2) in the locking division the at least one seal (41) the seam (15 ') between the first filter housing part (10.1) and the second filter housing part (10.2) can be placed against the inner circumference in a radially sealing manner.

19. Filter insert (2) according to claim 18, characterized in that the device (41) on the outer circumference of the locking element (40) as a single pre-assembled elastomer seal or as two separate pre-assembled, axially spaced elastomer seals or as one or more directly molded thermoplastic elastomer lips is executed.

20. Filter insert (2) according to one of claims 16 to 19, characterized in that the filter insert (2) second engagement elements (26) are arranged, which are arranged with an actuating element (3) inside the second Filterge housing part (10.2) first engagement elements (36) together, wherein the first and second engagement elements (36, 26) can be brought into and out of engagement in at least one first rotational position relative to one another and in their engaged state in rotational positions other than the first rotational position relative to one another in an axial train - and shear-proof engagement with each other.

21. Filter insert (2) according to any one of claims 16 to 20, characterized in that on the filter insert (2) radially outwardly projecting second guide elements (24) are arranged, which in the installed state of the filter insert (2) with at least one Axially extending first guide elements (14) interact, in particular near the ground, area of the inner circumference of the second, cup-shaped filter housing part (10.2), wherein the second guide elements (24) protruding radially outward on the filter insert (2) with play or greater play between the first guide elements (14) protrude and wherein the first and second guide elements (14, 24) together form an anti-rotation device or limit rotation angle for the filter insert (2) relative to the second filter housing part (10.2).

22. Filter insert (2) according to one of claims 16 to 21, characterized in that the filter insert (2) has a hollow, tubular filter material body (20) which is sealingly encompassed at the front by two end plates (21, 22), and that the second engagement elements (26) are arranged or formed on the end plate (21) facing the base (10.3) of the second filter housing part (10.2) when the filter insert (2) was installed.

23. Filter insert (2) according to one of claims 16 to 22, characterized in that the second engagement elements (26) on the filter insert (2) as radially outwardly or inwardly pointing, in the circumferential direction over part of the circumference of the filter insert (2 ) running, at least at one end in the circumferential direction and / or in the axial direction open guide grooves are executed, which in the installed state of the filter insert (2) with inward or outward in the radial direction in the circumferential direction distributed guide pins formed first engagement elements (36) on the actuating element (3) interact.

24. Filter insert (2) according to one of claims 16 to 22, characterized in that the second engagement elements (26) on the filter insert (2) are a plurality of circumferentially distributed guide pins that point inwards or outwards in the radial direction and are in the installed state of the Fil tereinsatzes (2) with a plurality of radially outwardly or inwardly white send, in the circumferential direction over part of the circumference of the actuating element (3) extending, at least at one end in the circumferential direction and / or in the axial direction open guide grooves formed first A handle element (36) on the actuating element (3) interacting.

25. Filter insert (2) according to claim 23 or 24, characterized in that the guide grooves forming the second engagement elements (26) on the filter insert (2) have a helical course.

26. Filter insert (2) according to one of claims 16 to 25, characterized in that the filter insert (2) has a round or non-round, in particular polygonal or oval, contour shape, seen in cross section.