DE102018221259A1 - Assembly for a filter device - Google Patents

Abstract

The invention relates to a preassembly module (20) for a fluid cell (51) of a filter device (70), - with a filter housing (49) which partially delimits a housing interior (22) and which comprises an open filter housing pot (21), - with a Filter element (1) which is arranged interchangeably in the housing interior (22) and divides the housing interior (22) into a raw side (23) and a clean side (24), the filter element comprising: - A support structure extending along an axial direction (A) (2), on the circumferential side of which an annular filter medium (3) made of filter material is arranged; and - an annular first end plate (4a), the through opening (5) of which passes through a first pin element (6a), so that it protrudes along the axial direction (A) from the through opening (5), whereby from the (first) end plate (4a) a second pin element (6b) projects laterally at a distance from the first pin element (6a), - with a first valve body (26a) arranged on the first pin element (6a) and with one on the second pin element (6b) arranged second valve body (26b), - with a filter housing cover arranged on the filter housing pot, which is adjustably arranged on the filter housing pot by means of a guide device, - with a first valve opening (28a) provided on the filter housing pot (21), together with which the first valve body (26a) forms a first valve device (29a), - with a second valve opening (28b) provided on the filter housing pot (21), together with which the second valve body (26b) forms a second valve device (29b) t, - with a locking device (32) provided on the filter housing pot (21), which has at least one adjustable locking element (33a, 33b), preferably two adjustable locking elements (33a, 33b), by means of which / which the filter housing cover (25) with the filter housing pot (21) can be locked, so that in a locked state the filter housing cover (25) is fixed to the filter housing pot (21) and the rotatability of the filter housing cover (25) relative to the filter housing pot (21) is blocked.

Description

The invention relates to an assembly for a filter device and a filter device with such an assembly. The invention further relates to an internal combustion engine with such a filter device. Finally, the invention relates to a method for assembling the filter device.

Filter systems for oil change cells of internal combustion engines have been known for some time. Such an oil change cell is for example in the EP 3 146 171 A1 described. The cell contains the oil from the oil circuit. Thus, when changing the oil, the oil does not have to be drained off in the workshop as usual, but only the oil change cell needs to be replaced when servicing. In this way, the oil change is quicker and cleaner.

It is an object of the present invention to show new ways in the development of such filter systems.

This object is achieved according to the invention by the subject matter of the independent claims. Advantageous embodiments are the subject of the dependent claims.

The basic idea of the invention is accordingly to construct a filter device in a modular manner and to create an assembly for this purpose which can be installed as a structural unit on a filter head of an internal combustion engine. Said assembly contains a fluid cell, in which a so-called pre-assembly assembly can be installed. Said assembly contains all components relevant for the filtering. A filter element and filter housing are included in the pre-assembly module. The pre-assembly assembly also includes valve devices. These valve devices allow crude or pure oil accumulated on the raw and clean side in the filter element to be selectively discharged into the surroundings of the filter element. Conversely, an uncontrolled escape of the crude or pure oil in the closed state of the valve openings is prevented.

The filter element is equipped with two pin elements that protrude axially from the filter element and are laterally spaced apart. The two pin elements are suitable for actuating two different valve bodies, by means of which valve openings formed on the filter housing can optionally be closed or opened. When the two valve openings are open, crude or pure oil accumulated on the raw and clean side in the filter element can be drained in a targeted manner into the surroundings of the filter element. Conversely, an uncontrolled escape of the crude or pure oil in the closed state of the valve openings is prevented. Thus, complete valve devices are provided in the pre-assembly module with the filter element and the filter housing, by means of which the draining of crude oil and pure oil can be controlled in a targeted manner.

Thus, the pre-assembly module can be installed as a unit in the fluid cell, which in turn can be attached to the filter head of an internal combustion engine, without further adjustments to the valve devices being necessary. This considerably simplifies the assembly of a filter device with the filter element explained above.

An assembly according to the invention comprises a pre-assembly assembly and a fluid cell, which in turn has a fluid cell housing in which the pre-assembly assembly can be received or received.

The preassembly module comprises a filter housing which partially delimits an interior of the housing and which comprises an open filter housing pot. A filter element is interchangeably arranged in the interior of the housing as part of the preassembly module, which divides the interior of the housing into a raw side and a clean side. The filter element comprises a support structure extending along an axial direction, on the circumferential side of which an annular filter medium made of a filter material is arranged. The filter element further comprises an annular (first) end disk, the through opening of which passes through a first pin element, so that it protrudes axially from the through opening. In addition, a second pin element protrudes laterally from the (first) end disk at a distance from the first pin element along the axial direction. As part of the preassembly module, a first valve body is arranged on the first pin element and a second valve body is arranged on the second pin element. In addition, the pre-assembly module comprises a filter housing cover which is arranged on the filter housing pot and which is adjustably arranged on the filter housing pot by means of a guide device. A first valve opening is provided on the filter housing pot, together with which the first valve body forms a first valve device. Accordingly, a second valve opening is also provided on the filter housing pot of the preassembly module, together with which the second valve body forms a second valve device. Finally, as part of the pre-assembly assembly, a locking device is provided on the filter housing pot, which has at least one adjustable locking element - preferably two adjustable locking elements - by means of which the filter housing cover can be locked with the filter housing pot. In a locked state of the locking device, the filter housing cover is thus fixed on the filter housing pot and at the same time the rotatability of the filter housing cover is blocked relative to the filter housing pot.

According to the invention, a latching unit for latching the fluid cell housing with the latching elements of the latching device of the preassembly module is provided on the fluid cell housing of the assembly. In this way, the pre-assembly module can be stably fixed to the fluid cell housing

According to a preferred embodiment, the first pin element and the first end plate are arranged concentrically to one another. This makes it possible to use a ring filter element in which a concentrically arranged valve opening is used to drain crude or pure oil. By providing a suitably designed valve body on the first pin element, said valve opening can thus be opened and closed again in a simple manner so that crude or pure oil can flow through it.

The second pin element is particularly preferably arranged eccentrically on the first end disk. This allows an eccentrically arranged valve opening to be used to drain pure or crude oil. By providing a suitably designed valve body on the second pin element, said additional valve opening can thus be opened and closed again in a simple manner so that pure or crude oil can flow through it.

The support structure is particularly expediently designed as a lattice structure with a tubular body-like geometry which delimits an interior of the tubular body in which the first pin element extends. The design as a lattice structure means that a pressure loss in the oil flowing through the filter medium can be kept low.

According to an advantageous development, the filter element comprises a second end plate, which lies axially opposite the first end plate, so that the filter medium is arranged axially between the two end plates. In this development, the support structure is connected to the second end plate and projects from the latter to the first end plate. A filter element according to this development proves to be particularly mechanically stable.

The two pin elements, the support structure and the two end plates can expediently be made of the same material. Thus, the same material can be used for the production of these components, which results in cost advantages.

The first pin element is expediently integrally formed on the second end plate and the second pin element is integrally formed on the first end plate. This embodiment also has an advantageous effect on the production costs.

According to another preferred embodiment, the first and / or the second pin element has the geometry of a cross in a cross section perpendicular to the axial direction. Valve bodies of different types can be mounted particularly easily on pin elements with such a cross-like geometry.

A first valve body is particularly preferably arranged on the first pin element and a second valve body is arranged on the second pin element, in each case for closing a valve opening. The provision of separate valve bodies for closing the valve openings can be dispensed with in this way.

According to an advantageous development, a fastening device for the adjustable connection of the filter element to a filter housing cover is provided on a side of the second end disk facing away from the filter medium. Such a fastening device facilitates the fastening of the filter element to the filter housing cover.

According to a preferred embodiment, the two valve openings are arranged on a housing base of the filter housing pot. When the filter housing is in the upright position, crude and pure oil accumulated in the interior of the housing can be drained downwards, following the direction of gravity.

According to an advantageous development, a tubular positioning aid for positioning the filter element with the support structure and the filter medium is arranged in the housing interior. This makes it easier to insert the filter element into the filter housing when it is replaced.

The filter element is expediently axially adjustable and arranged in the housing interior in a rotationally fixed manner with respect to the circumferential direction relative to the filter housing pot. This allows easy pre-assembly of the filter element in the filter housing.

The guide device is particularly expediently designed in such a way that it allows the filter housing cover to be pushed axially onto the filter housing cover and then rotated relative to the filter housing cover into a preassembly position, so that the filter housing cover is fixed axially relative to the filter housing cover after rotation.

According to an advantageous development, the guide device can be designed in the manner of a link guide. Such a backdrop makes it easy Pushing the filter housing cover described above onto the filter housing pot by means of an axial movement and a subsequent rotary movement.

The link guide expediently comprises a projection which projects from the filter housing pot and which engages in a link existing on the filter housing cover. Such a guide system is technically easy to implement and therefore also inexpensive to manufacture.

The link can particularly preferably have a first link section running along the axial direction and a second link section running transverse to the axial direction. In this way, the above-described axial push-on ability of the filter housing cover can be realized in connection with a twisting that follows the twisting.

The pin elements are expediently designed such that in the preassembly position of the filter housing cover, the two valve bodies arranged on the pin elements close the two valve openings. In this way, an undesired escape of oil from the raw or clean side into the surroundings of the filter housing can be prevented.

According to another preferred embodiment, the latching device is designed such that the filter housing cover can only be latched to the filter housing pot in the preassembly position by means of the at least one latching element.

In a further preferred embodiment, the filter housing cover and the filter element are matched to one another in such a way that the filter housing cover can be adjusted from the pre-assembly position into a final assembly position by means of a further rotary movement when the latching element is not locked. In the final assembly position, the pin elements with the two valve bodies release the two valve openings.

According to another preferred embodiment, the filter housing cover with the filter element and the two pin elements provided on the support structure, including the two valve bodies, is arranged axially offset relative to the filter housing pot in the final assembly position relative to the pre-assembly position.

An actuating element is particularly preferably provided on the filter housing cover, which presses the filter element axially toward the filter housing pot when the filter housing cover is moved from the preassembly position into the final installation position. The actuating element can preferably be implemented in the manner of an extension.

According to another preferred embodiment, the filter housing cover has a web which projects on the outside and preferably extends in the circumferential direction of the filter housing cover. In this web there is a recess for each locking element, into which locking element can engage to fix the filter housing cover on the filter housing pot.

According to a preferred embodiment, the latching device is designed such that the at least one latching element forms a latching connection with the web formed on the filter housing cover as soon as the filter housing cover reaches the preassembly position.

According to an advantageous development, the web is designed such that a rotary movement of the filter housing cover, at least in sections, causes a simultaneous axial movement of the filter housing cover towards the filter housing pot.

The web extending along the circumferential direction can expediently have a slope in the axial direction.

The web can particularly preferably have a ramp-like web structure. The slope mentioned above can also be realized in this way.

The web for forming the ramp-like web structure can expediently have a web height measured along the axial direction and increasing at least in sections in the circumferential direction.

According to an advantageous development, the at least one latching element is biased towards an engagement position, in which it engages in the recess provided on the web. This is particularly preferred for both locking elements.

According to an advantageous development, the at least one latching element is biased towards the engagement position by means of a spring-elastic component. In this way, an undesired release of the latching can be prevented. This further development can expediently be applied to both or all locking elements.

According to an advantageous development, at least one locking element is designed like a butterfly and is mounted on the filter housing pot so as to be pivotable about an axis of rotation by means of a bearing section. In this development, a first wing for engaging in the recess provided on the web and a second wing for interacting with one on the fluid cell stand by the bearing section provided locking unit. This further development can expediently be applied to both or all locking elements.

The first wing of the at least one latching element expediently comprises a latching hook for engaging in the recess provided on the web.

According to an advantageous development, two latching elements are provided, which lie opposite one another along the circumferential direction of the filter housing cover.

According to another preferred embodiment, the latching unit of the assembly has at least one projection which projects from the fluid cell housing and projects into the fluid cell housing interior and with which the latching element of the latching device can be latched or latched. Two such projections are particularly preferably provided for reliable locking.

According to another preferred embodiment, the latching unit, in particular the at least one projection, is designed such that, before latching with the latching element, it removes the latching of this latching element with the filter housing cover, in particular with the web present on the filter housing. This allows the filter housing cover to be rotated relative to the filter housing base, so that the assembly can be attached as a unit to the flange of the filter head by means of the latching unit.

The at least one projection is particularly preferably wedge-shaped. This embodiment is particularly easy to implement.

The invention further relates to a filter device. The filter device comprises a filter head with a flange, to which the assembly explained above can be attached or is attached. The advantages of the assembly explained above are therefore also transferred to the filter device according to the invention. The filter device comprises a crude oil and a pure oil connection, both of which are provided on the filter head and communicate fluidly with the first and second valve openings when the assembly is attached to the flange. In addition, the filter device according to the invention comprises a bayonet catch for releasably attaching the filter housing cover to the filter head.

According to an advantageous development, the flange on the filter head and the web on the filter housing cover are each part of the bayonet catch. A bayonet lock designed in this way allows the filter housing cover to be rotated in a simple manner from the pre-assembly position into the final assembly position and in this way to fasten the assembly as a unit to the filter head.

According to another preferred embodiment, the flange forming the bayonet catch has at least one first wall section, on which the web provided on the filter housing cover can be locked. In this embodiment, the flange forming the bayonet catch has at least one second wall section, by means of which one of the latching elements of the latching device can be moved away from the engaged position. In this way it is possible to then turn the filter housing cover from the pre-assembly position to the final assembly position.

According to an advantageous development, the bayonet lock is activated by rotating the filter housing cover from the pre-assembly position into the final assembly position relative to the flange, so that the assembly is fixed to the filter head by means of the bayonet lock.

According to an advantageous development, the flange with the at least one first and at least one second wall section is formed by a peripheral wall protruding from a filter head base. In this development, a first wall height of the at least one first wall section measured from the filter head base along the axial direction is greater than a second wall height of the at least one second wall section measured from the filter head base along the axial direction.

According to a further advantageous development, two first and two second wall sections alternate along a circumferential direction of the flange. These wall sections are preferably formed integrally with one another. This embodiment is technically simple to implement and therefore particularly inexpensive.

According to another preferred embodiment, the bayonet catch is designed such that the assembly can be placed on the flange in the preassembly position.

According to another preferred embodiment, a stop is formed on the at least one first wall section, which axially fixes the filter housing cover in the final assembly position on the filter head.

The stop is expediently formed by a wall collar protruding radially from the first wall section.

The invention further relates to an internal combustion engine with the filter device explained above. The advantages of the filter device are therefore also transferred to the internal combustion engine.

Finally, the invention relates to a method for assembling the filter device. The advantages of the filter device are therefore also transferred to the method.

Further important features and advantages of the invention emerge from the subclaims, from the drawing and from the associated description of the figures with reference to the drawing.

It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the combination specified in each case, but also in other combinations or on their own without departing from the scope of the present invention.

A preferred embodiment of the invention is shown in the drawing and is explained in more detail in the following description.

• 1 die Komponenten der erfindungsgemäßen Filterelements 1 in einem nicht montierten Zustand,
• 2, 3 das zusammen gebaute Filterelement der 1 in unterschiedlichen perspektivischen Ansichten,
• 4 die Komponenten der erfindungsgemäßen Vormontage-Baugruppe in separater Darstellung,
• 5 die Positionierhilfe der Vormontage-Baugruppe in separater, perspektivischer Darstellung,
• 6, 7 die Vormontage-Baugruppe der 4 in zwei unterschiedlichen Längsschnitten,
• 8 die sich aus der Vormontage-Baugruppe und einer Fluidzelle zusammensetzende Baugruppe vor dem Zusammenbau (linke Darstellung) und nach dem Zusammenbau (rechte Darstellung),
• 9 die Baugruppe der 8 in einem zusammengebauten Zustand in einem Längsschnitt,
• 10 eine Detaildarstellung der 9 im Bereich eines einzelnen Rastelements,
• 11 die Baugruppe der 8 und 9 vor der Montage an einem Filterkopf einer Brennkraftmaschine,
• 12 eine Detaildarstellung der 11,
• 13, 14 Darstellungen, die die Befestigung der Baugruppe am Filterkopf der Brennkraftmaschine illustrieren.

Each shows schematically:

• 1 the components of the filter element according to the invention 1 in an unassembled state,
• 2nd , 3rd the assembled filter element of the 1 in different perspective views,
• 4th the components of the preassembly assembly according to the invention in a separate representation,
• 5 the positioning aid of the pre-assembly module in a separate, perspective view,
• 6 , 7 the pre-assembly assembly of the 4th in two different longitudinal sections,
• 8th the assembly composed of the pre-assembly assembly and a fluid cell before assembly (left illustration) and after assembly (right illustration),
• 9 the assembly of the 8th in an assembled state in a longitudinal section,
• 10th a detailed representation of the 9 in the area of a single locking element,
• 11 the assembly of the 8th and 9 before mounting on a filter head of an internal combustion engine,
• 12 a detailed representation of the 11 ,
• 13 , 14 Representations that illustrate the attachment of the assembly to the filter head of the internal combustion engine.

The 1 to 3rd show an example of a filter element 1 as part of a preassembly assembly according to the invention 20th . The 1 shows the essential components of the filter element 1 before assembly, the 2nd and 3rd in an assembled state in two different perspective views.

The filter element 1 includes a support structure 2nd that extend along an axial direction A extends. The circumference is on the support structure 2nd an annular or hollow cylindrical filter medium 3rd made of filter material, for example a fleece. The axial direction A extends along a central longitudinal axis M of the annular or hollow cylindrical filter medium 3rd . A radial direction R extends perpendicularly from the central longitudinal axis M away, a circumferential direction U runs around the central longitudinal axis M around. The axial direction A , the radial direction R and the circumferential direction U each extend orthogonally to each other.

How 1 reveals the filter element 1 an annular first end plate 4a that have a through hole 5 borders. The representation of the 3rd you can see that with the assembled filter element 1 the through opening 5 from a first pin element 6a is penetrated so that this along the axial direction A from the through opening 5 protrudes. It also says of the first end plate 4a laterally at a distance from the first pin element 6a in the axial direction A from the filter medium 3rd away a second pin element 6b from. The two pin elements 6a , 6b can have essentially the same geometric shape. In the example of the 1 to 3rd have the two pin elements 6a , 6b in a cross section perpendicular to the axial direction A for example, the geometric shape of a cross. On the two pin elements 6a , 6b each valve body (not shown here) can be arranged to close valve openings.

Corresponding 3rd are the first pin element 6a and the first end plate 4a arranged concentrically to each other. It is also the first pin element 6a also concentric to the through opening 5 arranged.

The support structure 2nd is according to 1 as a lattice structure 7 formed with the geometry of a tubular body. The lattice structure 7 delimits a tube body interior 8th , in which the first pin element 6a extends in sections. A main section thus extends 9a of the first pin Elements 6a inside the tubular body interior 8th and goes along the axial direction A into an end section 9b over that of the through opening 5 the first end plate 4a reaches through and axially from the through opening 5 protrudes. The filter element 1 also includes a second end plate 4b that of the first end plate 4a along the axial direction A opposite. This is the filter medium 3rd axially between the two end plates 4a , 4b arranged. The filter medium 3rd which has a peripheral surface 11 has, and thus also the filter element 1 will be along the axial direction A from the two end plates 4a , 4b limited. The two end plates are useful 4a , 4b circular. In contrast to the first end plate 4a holds the second end plate 4b no through opening.

According to 1 is the support structure 2nd with the second end plate 4a connected and from this along the axial direction A to the first end plate 4a down. The support structure 2nd passes through one in the annular or hollow cylindrical filter medium 3rd trained and extending along the axial direction A extending circular or cylindrical opening 10th . The two pin elements are useful 6a , 6b , the support structure 2nd as well as the two axial end plates 4a , 4b trained in the same material. A suitable plastic, for example, is suitable as the material. The first pin element is preferred 6a integral to the second end plate 4b and the second pin element 6b integral to the first end plate 4a molded. Finally, on one of the filter media 3rd opposite side 12 the second end plate 4b a fastening device 13 for adjustable connection of the filter element 1 with a filter housing cover (in the 1 to 3rd not shown) may be provided.

The 4th , 6 and 7 show an example of a so-called pre-assembly module 20th with a filter element explained above 1 . The pre-assembly assembly 20th can be installed as a structural unit in a fluid cell after their assembly, that is after their pre-assembly. The 4th shows a perspective view, the 6 and 7 show different sectional views. In addition to the filter element 1 includes the pre-assembly assembly 20th a filter housing pot open at the top 21st which has a housing interior 22 partially limited. The filter element 1 is according to the 6 and 7 in the interior of the housing 22 arranged interchangeably so that it is the housing interior 22 into a raw page 23 and into a clean page 24th divided.

In the example of the 4th is the raw side 23 with respect to the radial direction R radially outside and the clean side 24th arranged radially inside, ie the filter medium 3rd of the filter element 1 is flowed through radially outside radially inside. Of course, in a variant not shown, the raw side 23 radially inside and the clean side 24th be arranged radially outside.

The sectional views of the 6 and 7 you take the one on the first pin element 6a arranged and this axially extending first valve body 26a , one in the case back 27th of the filter housing pot 21st arranged first valve opening 28a seal or release oil to flow through.

Accordingly, one takes the 7 one on the second pin element 6b arranged and this along the axial direction A extending second valve body 26b , which correspondingly one also in the case back 27th of the filter housing pot 21st arranged second valve opening 28b closes. The first valve body 26a and the first valve opening 28a form a first valve device 29a out. The second valve body 26b and the second valve opening 28b accordingly form a second valve device 29b out. The first valve device 29a serves to drain accumulated pure oil from the clean side 24th . The second valve device serves in an analogous manner 29b for draining accumulated waste oil from the raw side 23 . The two valve devices 29a , 29b are part of the pre-assembly assembly 20th . The pre-assembly assembly 20th can also be one inside the case 22 arranged and tubular positioning aid 30th include. The positioning aid 30th is concentric to the filter housing pot 21st arranged and extending along the axial direction A . The positioning aid 30th facilitates the insertion and positioning of the filter element 1 with the support structure 2nd and the filter medium 3rd in the interior of the housing 22 .

After inserting the filter element 1 in the interior of the housing 22 close the on the pin elements 6a , 6b arranged valve body 26a , 26b the two valve openings 28a , 28b . In addition to the filter element 1 and to the filter housing pot 21st includes the pre-assembly assembly 20th also a filter housing cover 25th , by means of which after arranging the filter element 1 in the interior of the housing 22 the open filter housing pot 21st can be tightly closed. The filter housing cover 25th and the filter housing pot 21st together form a filter housing 49 the pre-assembly assembly 20th out.

The filter housing cover 25th can be used to close the interior of the housing 22 first axially onto the filter housing pot 21st postpone (see arrow P in 4th ). A subsequent twisting of the filter housing cover 25th relative to the filter housing pot 21st along the circumferential direction U in a Position, which is referred to below as the pre-assembly position, causes the filter housing cover 25th after such twisting axially with respect to the filter housing pot 21st is fixed.

For rotating the filter housing cover 25th can an actuating element on this upper side in a rotationally fixed manner 31 be shaped in the manner of a twist grip, by means of which the filter housing cover 25th relative to the filter housing pot 21st along the circumferential direction U can be rotated. In the pre-assembly position of the filter housing cover 25th close the on the pin elements 6a , 6b arranged valve body 26a , 26b the two valve openings 28a , 28b . Sliding the filter housing cover on axially 25th on the filter housing pot 21st as well as the subsequent turning of the filter housing cover 25th relative to the filter housing pot 21st is with the help of a guide 34 accomplished. The leadership facility 34 is as a backdrop tour 35 educated. The scenery tour includes this 35 one in 4th recognizable and from the filter housing pot 21st protruding projection 36 which is in a on the filter housing cover 25th trained backdrop 37 engages or reaches through. How 4th shows the backdrop 37 one along the axial direction A extending first backdrop section 38a and one transverse to the axial direction A extending second backdrop section 38b on. The first stage section 38a thus causes the axial guidance of the filter housing cover 25th when pushed onto the filter housing pot 21st along the axial direction A . The second stage section 38b however, causes the rotary movement of the filter housing cover following the axial movement 25th relative to the filter housing pot 21st along the circumferential direction U .

As the 4th and 6 can be recognized is by the filter housing pot 21st a locking device 32 provided the two adjustable locking elements 33a , 33b includes. By means of these locking elements 33a , 33b can the filter housing cover 25th after being pushed open axially with the filter housing pot 21st be locked. The filter housing cover is in such a locked state 25th on the filter housing pot 21st fixed, so in particular the rotatability of the filter housing cover 25th relative to the filter housing pot 21st is blocked. For locking the filter housing cover 25th with the filter housing pot 21st has the filter housing cover 25th two protruding on the outside and extending in the circumferential direction U extending webs 39 on each other in the circumferential direction U preferably opposite. The locking device 32 is designed such that the locking elements 33a , 33b with the on the filter housing cover 25th existing webs 39 form a locking connection. For this are part of the locking device 32 in the respective web 39 a recess 40a or40b provided, in which to fix the filter housing cover 25th on the filter housing pot 21st one locking element each 33a , 33b can intervene. The recesses can expediently 40a , 40b complementary to the locking elements 33a , 33b be trained. The locking elements 33a , 33b and the recesses 40a , 40b are designed and coordinated so that the web 39 when attempting to rotate the filter housing cover 25th relative to the filter housing pot 21st along the circumferential direction U , for example by actuating the actuating element 31 , acts as a stop and thus prevents rotation as long as the locking elements 33a , 33b in the recesses 40a , 40b intervention.

In summary, the two locking elements form 33a , 33b So with the on the filter housing cover 25th trained bridges 39 a snap connection once the filter housing cover 25th has reached the pre-assembly position. Here is the locking device 32 with the locking elements 33a , 33b and the recesses 40a , 40b preferably designed such that the filter housing cover 25th by means of the two locking elements 33a , 33b only in the pre-assembly position with the filter housing pot 21st can be locked. The filter housing cover is located 25th in the pre-assembly position, this is the pre-assembly assembly 20th fully assembled and ready for installation in a fluid cell.

The two locking elements 33a , 33b can expediently be biased towards an engagement position in which they are in the on the webs 39 existing cutouts 40a , 40b intervention. Each of the two locking elements 33a , 33b can by means of a spring-elastic component 41a , 41b for example in the manner of a spiral spring, which is biased as in 6 shown on the one hand on the filter housing pot 21st and the other on the respective locking element 33a , 33b supports.

The 4th and 6 a possible structural design of the two locking elements can be detailed 33a , 33b remove. Accordingly, a single locking element 33a , 33b formed like a butterfly and by means of a bearing section 43 about an axis of rotation D swiveling on the filter housing pot 21st be stored. From the storage section 43 is a first locking element wing 42a and a second locking element wing 42b from. The first locking element wing 42a of the respective locking element 33a , 33b can have a snap hook 44 to intervene in the respective web 39 provided recess 40a respectively. 40b exhibit. The second locking element wing 42b can, however, serve as an actuating element to the respective locking element 33a , 33b to move away from the engaged position.

The pre-assembly assembly explained above 20th can be used as a unit in a fluid cell 51 are used, which is based on the following 8th is explained. In the example scenario, the fluid cell comprises 51 a fluid cell housing 52 , in which a through opening 53 is formed, in which in turn the pre-assembly assembly 20th along the axial direction A can be used. This is in 8th , left representation, shown. The passage opening 53 forms a fluid cell housing interior 56 out. In one in the through opening 53 or in the fluid cell housing interior 56 recorded state - this state is in 8th , right illustration shown - form the preassembly 20th and the fluid cell 51 an assembly 50 , which can be attached as a unit to a filter head of an internal combustion engine.

The 9 shows the assembled assembly 50 with the one in the through hole 53 included preassembly 20th in a longitudinal section. How 9 can be seen is on the fluid cell housing 52 a locking unit 54 for locking the fluid cell housing 52 with the locking elements 33a , 33b the locking device 32 available. The locking unit 54 can two of the fluid cell housing 52 protruding and into the fluid cell housing interior 56 protruding protrusions 55 have, with which the locking elements 33a , 33b the locking device 32 can be locked.

The tabs 55 the locking unit 54 are designed such that they are locked with the respective locking element 33a , 33b the locking of this locking element 33a , 33b with the on the filter housing cover 25th existing jetty 39 picks up. To do this, the projections 55 as in 9 - And especially in the detailed representation of the 10th - shown to be wedge-shaped. The filter housing cover remains despite the release of the snap-in connection 25th by means of the guide device 34 on the filter housing pot 21st fixed, ie unwanted loosening of the filter housing cover 25th from the filter housing pot 21st avoided.

As already explained above, the filter housing cover is 25th if not with the filter housing cover 25th latched locking elements 33a , 33b adjustable by means of a further rotary movement from the already explained pre-assembly position into a final assembly position in which the pin elements 6a , 6b with the two valve bodies 26a , 26b the two assigned valve openings 28a , 28b release.

For this purpose, the filter housing cover 25th and the filter housing pot 21st matched to one another such that a rotary movement of the filter housing cover 25th from its pre-assembly position to the final assembly position along the circumferential direction U also an axial adjustment of the filter housing cover 25th , i.e. along the axial direction A , to the filter housing pot 21st effects. To achieve this coordination are those on the filter housing cover 25th provided webs 39 formed such that a rotary movement of the filter housing cover 25th a movement along the axial direction from the pre-assembly position to the final assembly position A of the filter housing cover 25th - And via an actuator 45 also the filter element 1 (see. 6 ) - to the filter housing pot 21st effects.

For this purpose, in the example scenario, they point along the circumferential direction U extending webs 39 in the axial direction A one slope each. For this purpose, each of the webs in turn has 39 sections of a ramp-like web structure 47 . To form this ramp-like web structure 47 owns the jetty 39 one along the axial direction A measured and in sections along the circumferential direction U increasing web height h. The jetty 39 is designed such that a rotational movement of the filter housing cover 25th in sections, a simultaneous axial movement of the filter housing cover 25th to the filter housing pot 21st along the axial direction A effects. In other words, the filter housing cover 25th and the filter element 1 are then matched to one another in such a way that a rotational movement of the filter housing cover 25th an axial adjustment of the filter element 1 causes.

As a result, the filter housing cover 25th with the filter element 1 and the two on the support structure 2nd provided pin elements 6a , 6b including the two valve bodies 26a , 26b in the final assembly position relative to the pre-assembly position relative to the filter housing pot 21st axially offset. Conversely, the filter housing cover rotates 25th an axial adjustment of the filter housing cover from the final assembly position back to its pre-assembly position 25th from the filter housing pot 21st path.

For axial adjustment of the filter element 1 by means of the filter housing cover 25th can the actuator 45 on the inside of the filter housing cover 25th , for example in the manner of an extension 46 , be arranged. Said process 46 presses while the filter housing cover is moving 25th to adjust the same from the pre-assembly position into the final assembly position axially on the second end plate 4b of the filter element 1 (see. 6 ) and adjusts the filter element in this way 1 along the axial direction A to the filter housing pot 21st there. When adjusting the filter element axially 1 to the filter housing pot 21st the two pin elements also go there 6a , 6b with the valve bodies 26a , 26b along the axial direction A relative to the two associated valve openings 28a , 28b adjusted so that this previously closed valve opening 28a , 28b opened and can be flowed through by crude oil or pure oil.

The assembly explained above 50 can according to 11 on a filter head 60 be attached to an internal combustion engine. On the filter head 60 the internal combustion engine can have a flange 61 as well as a crude oil connection 63a and a pure oil connection 63b be provided, which in a on the flange 61 attached state of the assembly 50 fluidly with the first or second valve opening 28a , 28b communicate.

For fastening the assembly 50 on the flange 61 can the filter housing cover 25th by means of a bayonet catch 62 be releasably attached to this. Both the flange 61 as well as that on the filter housing cover 25th web provided on the outer circumference 39 are part of this bayonet catch 62 . The bayonet catch 62 is designed such that the assembly 50 with the filter housing cover 25th in its pre-assembly position axially on the flange 61 can be put on.

The bayonet catch 62 with forming flange 61 has two first wall sections 64a on which of the filter housing cover 25th provided footbridge 39 can be locked. The flange also includes 61 two second wall sections 64b , by means of which one of the locking elements 33a , 33b the locking device 32 is adjustable away from the engagement position, so that the filter housing cover 25th then by means of a rotary movement along the circumferential direction U is rotatably adjustable from the pre-assembly position to the final assembly position. For this purpose, the second locking element wing 42b of the respective locking element 33a , 33b and - alternatively or additionally - with the respective locking element 33a , 33b cooperating second wall section 64b a chamfer 69a respectively. 69b have what from the detailed representation of 12 can be seen.

The bayonet catch 62 can be done by turning the filter housing cover 25th from the pre-assembly position to the final assembly position, which means that the entire assembly 50 axially on the filter head 60 is fixed.

According to 11 alternate along a circumferential direction UF of the flange 61 two first and two second wall sections 64a , 64b from, which can be integrally formed together. The flange 61 with the first and second wall sections 64a , 64b is - as part of the bayonet catch 62 - by one of a filter head floor 65 protruding peripheral wall 66 educated. One is from the bottom of the filter head 65 from along the axial direction A measured first wall height w1 of the first two wall sections 64a larger than one from the bottom of the filter head 65 from along the axial direction A measured second wall height w2 of the second wall sections 64b .

This can be done on the first two wall sections 64a an attack 67 be provided which the filter housing cover 25th in the final assembly position axially on the filter head 60 fixed. That attack 67 can by a radial - for example inwards - from the first wall sections 64a protruding wall collar 68 be educated.

The following is based on the 13a-c and 14a-c the assembly of the assembly 50 on the filter head 60 explained, in which 13a and 14a the fluid cell for reasons of clarity 51 is not shown, so that in particular the latching device 32 as well as the bayonet catch 62 are recognizable.

The 13a shows the filter device 70 after the module has been pushed open axially 50 on the filter head 60 or on the flange 61 of the filter head 60 . How 13a are shown on the filter housing pot 21st Breakthroughs 71 formed which of the wall sections 64a , 643b are reached. The two grid elements 33a , 33b the locking device 32 were made using the two second wall sections 64b moved away from the engaged position so that the filter housing cover 25th using the backdrop guide 35 can be rotated. Such a rotation is already in the 13a shown state takes place so that the projection 36 in the area of the second stage section 38b the backdrop 37 is positioned. In this state, the two valve bodies close 26a , 26b the two valve openings 28a , 28b as in 13c shown. The first two wall sections 64a that with the jetty 39 the management facility 34 interact, are not yet in the area of the ramp-like web structure 47 what in 13b is illustrated. Another turn of the filter housing cover 25th by actuating the actuating element 31 leads to that in the 14a , 14 b and 14c shown situation: With the help of the ramp-like web structure 47 of the jetty 39 becomes the case cover 25th - And about this using the actuator 45 which according to 6 as an extension 46 can also be formed, the filter element 1 - along the axial direction A relative to the case back 27th with the two valve openings 28a , 28b emotional. This way the two with the pin elements 6a , 6b connected valve body 26a , 26b relative to the two valve openings 28a , 28b axially adjusted so that the valve openings 28a , 28b are no longer closed, but are released to flow with pure oil or crude oil, which in the 14c is shown. This allows crude oil to be cleaned from the filter head 60 into the filter element into the raw side 23 of the filter element 1 (see. 6 ) and after the flow of the filter medium 3rd of the filter element 1 as pure oil on the clean side 24th back into the filter head 60 be diverted.

QUOTES INCLUDE IN THE DESCRIPTION

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Patent literature cited

• EP 3146171 A1 [0002]

Claims (25)

Assembly (50) for a filter device (70), - With a fluid cell (51) having a fluid cell housing (52), - With a pre-assembly (20) which can be received or received in the fluid cell housing (52) and which comprises: a filter housing (49) which partially delimits a housing interior (22) and which comprises an open filter housing pot (21), - A filter element (1) which is arranged interchangeably in the housing interior (22) and divides the housing interior (22) into a raw side (23) and a clean side (24), the filter element (1) extending along an axial direction (A) extending support structure (2), on the circumferential side of which an annular filter medium (3) made of filter material is arranged, and wherein the filter element comprises an annular (first) end plate (4a), the through opening (5) of which passes through a first pin element (6a) , so that it protrudes from the through opening (5) along the axial direction (A), a second pin element (6b) projecting axially from the (first) end plate (4a) laterally at a distance from the first pin element (6a) , a first valve body (26a) arranged on the first pin element (6a) and a second valve body (26b) arranged on the second pin element (6b), a filter housing cover arranged on the filter housing pot, which is adjustably arranged on the filter housing pot by means of a guide device, a first valve opening (28a) provided on the filter housing pot (21), together with which the first valve body (26a) forms a first valve device (29a), a second valve opening (28b) provided on the filter housing pot (21), together with which the second valve body (26b) forms a second valve device (29b), - A locking device (32) provided on the filter housing pot (21), which has at least one adjustable locking element (33a, 33b), preferably two adjustable locking elements (33a, 33b), by means of which the filter housing cover (25) with the filter housing pot (21 ) can be locked, so that in a locked state the filter housing cover (25) is fixed to the filter housing pot (21) and the rotatability of the filter housing cover (25) relative to the filter housing pot (21) is blocked, - A locking unit (54) for locking the fluid cell housing (52) with the locking elements (33a, 33b) of the locking device (32) is provided on the fluid cell housing (52). Assembly after Claim 1 , characterized in that the two valve openings (28a, 28b) are arranged on a housing base (27) of the filter housing pot (21). Assembly after Claim 1 or 2nd , characterized in that a tubular positioning aid for positioning the filter element (1) with the support structure (2) and the filter medium (3) is arranged in the housing interior (22). Assembly according to one of the Claims 1 to 3rd , characterized in that the filter element (1) is axially adjustable and is arranged in the housing interior (22) in a rotationally fixed manner with respect to the circumferential direction (U) relative to the filter housing pot (21). Module according to one of the preceding claims, characterized in that the guide device (34) is designed such that it axially slides the filter housing cover (25) onto the filter housing pot (21) and then rotates the filter housing cover (25) relative to the filter housing pot (21 ) in a pre-assembly position, so that the filter housing cover (25) is fixed relative to the filter housing pot (21) after twisting with respect to the axial direction (A). Module according to one of the preceding claims, characterized in that the guide device (34) is designed as a link guide (35). Assembly after Claim 6 , characterized in that the link guide (35) comprises a projection (36) which projects from the filter housing pot (21) and which engages in a link (37) provided on the filter housing cover (25). Assembly after Claim 7 , characterized in that the link (37) has a first link section (38a) running along the axial direction (A) and a second link section (38b) running transverse to the axial direction (A). Module according to one of the preceding claims, characterized in that the latching unit (54) has at least one, preferably two, protrusions / protrusions (55) projecting from the fluid cell housing (52), by means of which the latching element (33a, 33b) of the latching device ( 32) can be locked or locked. Assembly after Claim 9 , characterized in that the latching unit (5), in particular the at least one projection (55), is designed such that before latching with the latching element (33a, 33b) it latches this latching element (33a, 33b) with the filter housing cover ( 25) cancels. Assembly after Claim 9 or 10th , characterized in that the at least one projection (55) is wedge-shaped. Filter device (70) for an internal combustion engine, - an assembly (50) according to any one of the preceding claims, with a filter head (60) having a flange (61), to which the assembly (50) according to one of the preceding claims can be attached or attached, - With a respective crude oil and pure oil connection (63a, 63b) provided on the filter head (60), which fluidly communicate with the first or second valve opening (28a, 28b) when the assembly (50) is attached to the flange (61). - With a bayonet catch (62) for releasably attaching the filter housing cover (25) to the filter head (60). Filter device after Claim 12 , characterized in that the filter housing cover (25) has a web (39) which projects on the outside and preferably extends in the circumferential direction of the filter housing cover (25) and in which there is a recess (40a, 40b) for each latching element (33a, 33b) , into which the relevant locking element (33a, 33b) can engage to fix the filter housing cover (25) on the filter housing pot (21). Filter device after Claim 12 or 13 , characterized in that the flange (61) on the filter head (60) and the webs (39) on the filter housing cover (25) are each part of the bayonet catch (64). Filter device according to one of the Claims 12 to 14 , characterized in that - the flange (61) forming the bayonet catch (62) has at least a first wall section (64a) on which the web (39) provided on the filter housing cover (25) can be locked; and that the flange (61) forming the bayonet catch (62) has at least one second wall section (64b), by means of which one of the latching elements (33a, 33b) of the latching device (32) can be moved away from the engagement position, so that the filter housing cover ( 25) can be rotated from the pre-assembly position into the final assembly position. Filter device according to one of the Claims 12 to 15 , characterized in that the bayonet lock (64) is activated by rotating the filter housing cover (25) from the pre-assembly position into the final assembly position relative to the flange (61), so that the assembly (50) by means of the bayonet lock (64) axially on the filter head (60 ) is fixed. Filter device according to one of the Claims 12 to 16 , characterized in that the flange (61) with the at least a first and at least a second wall section (64a, 64b) is formed by a peripheral wall (66) projecting from a filter head base, one starting from the filter head base along the axial direction (A) measured first wall height (w1) of the at least one first wall section (64a) is greater than a second wall height (w2) of the at least one second wall section (64b) measured starting from the filter head base (65) along the axial direction (A). Filter device after Claim 17 , characterized in that two first and two second wall sections (64a, 64b) alternate along a circumferential direction (UF) of the flange (61), which are preferably formed integrally with one another. Filter device according to one of the Claims 12 to 18th , characterized in that the bayonet catch (64) is designed such that the assembly (50) can be placed on the flange (61) in the preassembly position. Filter device after Claim 18 or 19th , characterized in that a stop (67) is formed on the at least one first wall section (64a), which axially fixes the filter housing cover (25) in the final assembly position on the filter head (61). Filter device after Claim 20 , characterized in that the stop (67) is formed by a wall collar (68) projecting radially from the first wall section (64a). Filter device according to one of the Claims 13 to 21st , characterized in that the flange (61) and the assembly (50) are matched to one another in such a way that the assembly (50) can be placed on the flange (61) in the preassembly position. Internal combustion engine, - with a filter device (70) according to one of the Claims 13 to 22 . Method for assembling a filter device (70) according to one of the Claims 13 to 23 , - according to which the assembly (50) is mounted on the flange (61) of the filter head (60), - according to which after the assembly of the assembly (50) on the flange (61) by rotating the filter housing cover (25) relative to the housing base ( 27) is adjusted along the axial direction (A) so that the valve body (26a, 26b) connected to the pin elements (6a, 6b) Open the valve openings (28a, 28b) so that fluid, especially oil, can flow through them. Procedure according to Claim 24 , characterized in that the assembly (50) is also fixed via the flange (61) of the filter head (60) by rotating the filter housing cover (25) relative to the housing base (27).

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