EP2888024A1 - Filter device, in particular for gas filtration - Google Patents

Filter device, in particular for gas filtration

Info

Publication number
EP2888024A1
EP2888024A1 EP13750718.2A EP13750718A EP2888024A1 EP 2888024 A1 EP2888024 A1 EP 2888024A1 EP 13750718 A EP13750718 A EP 13750718A EP 2888024 A1 EP2888024 A1 EP 2888024A1
Authority
EP
European Patent Office
Prior art keywords
filter element
fitting part
filter device
filter
housing cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13750718.2A
Other languages
German (de)
French (fr)
Inventor
Klaus Waltenberg
Bernd Joos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP2888024A1 publication Critical patent/EP2888024A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/024—Air cleaners using filters, e.g. moistened
    • F02M35/02416—Fixing, mounting, supporting or arranging filter elements; Filter element cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0004—Details of removable closures, lids, caps or filter heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411—Filter cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411—Filter cartridges
    • B01D46/2414—End caps including additional functions or special forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/0201—Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof
    • F02M35/0202—Manufacturing or assembling; Materials for air cleaner housings
    • F02M35/0203—Manufacturing or assembling; Materials for air cleaner housings by using clamps, catches, locks or the like, e.g. for disposable plug-in filter cartridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/024—Air cleaners using filters, e.g. moistened
    • F02M35/02475—Air cleaners using filters, e.g. moistened characterised by the shape of the filter element
    • F02M35/02483—Cylindrical, conical, oval, spherical or the like filter elements; wounded filter elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/005—Installations wherein the liquid circulates in a closed loop ; Alleged perpetua mobilia of this or similar kind
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2265/02—Non-permanent measures for connecting different parts of the filter
    • B01D2265/021—Anti-rotational means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2265/02—Non-permanent measures for connecting different parts of the filter
    • B01D2265/022—Bayonet connecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2265/02—Non-permanent measures for connecting different parts of the filter
    • B01D2265/024—Mounting aids
    • B01D2265/026—Mounting aids with means for avoiding false mounting

Definitions

  • the invention relates to a filter device, in particular for gas filtration, for example, to an air filter for motor vehicles, according to the preamble of claim 1.
  • an air filter for the internal combustion engine of a motor vehicle has, in a filter housing, an annular filter element which can be closed by a housing cover in its position in the filter housing.
  • the housing cover is releasably secured to the filter housing by means of a bayonet closure, wherein the housing cover is axially insertable into a cover housing formed on the filter housing and can be rotated in the inserted state between an unlocking and a locking position.
  • the invention is based on the object, a filter device with simple constructive measures in such a way that the filter element is kept safe in the filter housing.
  • the invention relates to a filter device for the filtration of a fluid, in particular a gaseous fluid, optionally also a filtration of liquid media into consideration.
  • the filter device according to the invention is used as an air filter for motor vehicles, in particular for a Internal combustion engine or for the interior of the motor vehicle to be supplied fresh air.
  • the filter device has a filter element through which the fluid to be cleaned flows and is accommodated in a filter housing which can be closed by a housing cover.
  • a first form-fitting part is arranged, which projects beyond the outer surface of the filter element and is associated with a second form-fitting part on the housing cover.
  • the form-fitting parts on the filter element and on the housing cover interlock, so that a positive connection is provided, in particular in the circumferential direction, optionally also in at least one axial direction along the longitudinal axis of the filter element. Due to the positive connection between the filter element and the housing cover, which in turn is releasably attachable to the filter housing, a secure storage and mounting of the filter element is given.
  • the first form-fitting part on the filter element at a distance to a second connection point between the filter element and the housing cover, so that a total of at least two spaced positions a connection between the housing cover and the filter element is given.
  • the further connection takes place in particular via the end face of the filter element, for example via an axially projecting collar, which projects sealingly into a recess in the housing cover.
  • the first and the second connection point between the filter element and the housing cover are preferably axially spaced from one another.
  • the first form-fitting part can be arranged adjacent to an end face of the filter element which lies axially opposite the further connection point.
  • a hollow cylindrical or annular design of the filter element which is advantageously flowed through by the fluid to be cleaned radially from outside to inside, wherein the interior is the clean room through which the purified fluid is discharged axially.
  • the filter element has at least one axial end face, preferably at both axial end faces End disk, with which the first form-fitting part is connected. It may be expedient to manufacture the end plate made of plastic and form the first form-fitting part in one piece with the plastic end plate. In the case of an annular design of the filter element, the first form-fitting part protrudes beyond the cylindrical lateral surface in the radial direction.
  • This embodiment has the advantage that the positive connection can be made in a structurally simple manner by the first form-fitting part is formed on the filter element, for example, as a hook and the second positive locking element on the inside of the housing cover as a receiving lug into which the hook is inserted.
  • the hook advantageously has a first hook portion which extends in the radial direction and is secured to the end-side end plate of the filter element, and a second hook portion which extends at an angle to the first hook portion.
  • the second hook portion either has an orientation parallel to the filter element longitudinal axis or transverse to the filter element longitudinal axis.
  • the positive connection which is accomplished by the nesting of hook and receiving lug, be prepared by means of an exclusively axial insertion movement of the housing cover on the seat in the filter housing.
  • a bayonet connection between the filter element and the housing cover is considered, in which the filter element and the housing cover are initially approximated axially and subsequently execute a rotational movement about the filter element longitudinal axis, which leads to the positive connection of the form-fitting parts.
  • the positive connection exists in particular in both axial directions.
  • the housing cover may, according to a further advantageous embodiment, have a first cover portion, which is upstream in the mounted state of the end face of the filter element, and a second cover portion which is formed at an angle to the first cover portion and extends at a distance from the lateral surface of the filter element.
  • the second, lid-side form-fitting part is located on the second lid portion.
  • the first and the second cover portion which are preferably made in one piece, together form an L-shaped cross-section of the housing cover. It may be expedient, at a front-side end plate, which is provided with a central recess, to inject a sealing part, which rests sealingly on the housing cover in the mounted state.
  • the sealing part is designed, for example, as a 2-component part.
  • each form-fitting elements are arranged on the front side of the hollow cylindrical or annular filter element, which are designed for a bayonet lock.
  • the first form-fitting part which is formed, for example, hook-shaped, elastically resilient perform.
  • the first form-fitting part which is arranged on the filter element, has a hinge, for example a film hinge, which can be folded in at least two different positions.
  • a hinge for example a film hinge, which can be folded in at least two different positions.
  • the hinge axis runs transversely to the filter element longitudinal axis.
  • a hinge axis can also be formed longitudinally of the filter element longitudinal axis in order to enable a push-button fastening.
  • FIG. 2 shows the filter element from FIG. 1 in a perspective detail view
  • FIG. 3 is an interior view of a housing cover with a receiving eye in a further embodiment
  • FIG. 4 is an enlarged view of a film hinge, via which a hook-shaped form-locking element is arranged on the end-side end plate of the filter element,
  • FIG. 5 shows a filter element with a housing cover in a further embodiment, in which the hook-shaped form-fitting part on the filter element has a transversely extending hook portion
  • FIG. 6 shows the air filter according to FIG. 5 in an end view of the filter element and the housing cover, FIG.
  • FIGS. 5 and 6 shows the housing cover of the embodiment according to FIGS. 5 and 6 in a perspective detail view
  • FIG. 8 shows a further embodiment of an air filter in which the filter element is locked to the housing cover via a bayonet closure, Fig. 9, the housing cover of the embodiment of FIG. 8 in perspective detail view.
  • the same components are provided with the same reference numerals.
  • FIGS. 1 and 2 show as the first exemplary embodiment a filter device 1, which is used as an air filter for the internal combustion engine of a motor vehicle.
  • the filter device 1 has a filter housing 2, in which a receiving space for receiving a filter element 4 is formed, wherein the receiving space of a housing cover 3 is closed.
  • the filter element 4 is formed as a hollow cylinder or annular and is flowed through radially in relation to the filter element longitudinal axis 5 from the outside to the inside of the sucked ambient air.
  • the interior of the filter element 4 represents the clean room through which the axial discharge takes place.
  • the filter element 4 is provided on both axial end faces, each with an end plate 6, 9.
  • a first hook-shaped form-fitting part 7 is arranged, which protrudes positively in the assembled state in a trained as a receiving lug, second form-fitting part 8 on the inner wall of the housing cover 3.
  • the end plate 6 is expediently designed as a plastic component, the hook-shaped, first form-fitting part 7 may be formed integrally with the end plate 6.
  • the hook-shaped form-fitting part 7 has a first hook portion 7a, which extends radially outward relative to the filter element longitudinal axis 5 and projects beyond the lateral surface of the filter element in the radial direction.
  • the radial hook portion 7a is adjoined by a pin-shaped hook portion 7b extending in the axial direction, which in the assembled state protrudes into the second form-fitting part 8 designed as a receiving lug, the opening also extending in the axial direction in the receiving lug.
  • the second form-fitting part 8 designed as a receiving lug
  • the housing cover 3 has two cover sections 3a, 3b, which are integrally formed with each other, but are arranged at an angle to each other.
  • the first lid portion 3a is disposed upstream of the upper end surface of the filter element 4, on which the end plate 9 is arranged; the upper end disk 9 is arranged axially opposite the lower end disk 6, wherein the hook-shaped form-fitting part 7 is arranged on the lower end disk 6.
  • a collar 10 is formed, which projects axially and defines an end opening in the filter element 4, which communicates with the inner side representing the interior.
  • the collar 10 protrudes into a recess in the lid portion 3a and may be screwed to the lid portion 3a.
  • 4 screw 1 1 are introduced into the end plate 9 of the filter element.
  • an additional sealing ring may be provided, which is placed around or in the collar 10.
  • a seal may be disposed outside or inside the collar 10. It is also possible to form the collar 10 as a 2-component component, which has sealing properties and which, at the same time, is sealingly received in the cover section when inserted into the recess in the cover section 3a. In this case, can also be dispensed with a screw connection between the filter element and the housing cover.
  • the two lid portions 3a and 3b are at an angle to each other, which, as shown in FIG. 1, is greater than 90 °. In principle, however, is also possible at an angle of 90 ° or less than 90 °.
  • the housing cover 3 has two cover sections 3a, 3b, which are arranged at an angle to one another.
  • a recess 12 for receiving the collar 10 on the end face of the filter element 4 is introduced.
  • the second, lid-side form-fitting part 8 has two integrally formed on the inside of the lid webs, which define an intermediate opening.
  • the webs are elastically resilient, so that the hook-shaped first form-fitting part on the filter element can be introduced both axially and radially into the receiving opening of the form-fitting part 8 lying between the webs.
  • a film hinge 13 in the form of a tapered wall thickness is introduced into the first hook section 7a of the hook-shaped form-fitting part 7, so that the hook section 7a can be pivoted about the hinge axis.
  • the hinge axis extending transversely to the filter element longitudinal axis, for example, allows a bayonet between filter element and housing cover by first the filter element and the housing cover to each other axially approached and then rotated around the filter element longitudinal axis to each other. After reaching the final mounting position, the hook-shaped form-fitting part 7 can be folded around the film hinge 13, so that the hook-shaped form-fitting part comes into positive engagement position with the associated form-fitting part on the inside of the housing cover.
  • the filter element 4 is also provided in the region of its end-side end plate 6 with a hook-shaped, first form-fitting part 7.
  • the first hook portion 7a protrudes radially and projects beyond the lateral surface of the filter element 4 in the radial direction.
  • the second hook section 7b adjoining it does not extend in the axial direction but transversely to the filter element longitudinal axis 5.
  • the second form-fitting part 8 on the inside of the cover part 3b of the housing cover 3 also has one in the transverse direction opening which receives the hook portion 7b in the mounted state.
  • the mounting position is achieved via a bayonet closure, in which, after the axial approach, the filter element 4 and the housing cover 3 are rotated relative to one another around the filter element longitudinal axis 5 until the hook section 7b projects into the opening of the form-fitting part 8.
  • the connection between the filter element 4 and the housing cover 3 also takes place via a bayonet closure.
  • a plurality of interlocking elements 14 are arranged on the collar 10 distributed over the circumference, to which further interlocking elements 15 on the cover section 3a of the housing cover 3 are assigned.
  • the form-locking elements 14, 15th can be brought by axial approximation of the filter element and the housing cover 3 and subsequent rotation about the filter element longitudinal axis 5 in a positive position to each other, in which the filter element 4 is held in the axial direction positively on the housing cover 3.
  • the first form-fitting part 7 is designed hook-like and has a radially projecting first hook portion 7a and a second, extending in the axial direction, pin-shaped hook portion 7b.
  • the arranged on the inside of the housing cover second form-fitting part 8 has a semi-open in the transverse direction receiving opening into which the hook portion 7b is introduced in the rotational movement during the bayonet-type closing in the transverse direction.

Abstract

The invention relates to a filter device comprising a filter housing with a filter element and a housing cover. A form-fit part protruding the outer surface is disposed on the filter element, and an additional form-fit part on the housing cover is associated with said form-fit part.

Description

Beschreibung  description
Filtereinrichtung, insbesondere zur Gasfiltration Technisches Gebiet Filter device, in particular for gas filtration Technical field
Die Erfindung bezieht sich auf eine Filtereinrichtung, insbesondere zur Gasfiltration, beispielsweise auf einen Luftfilter für Kraftfahrzeuge, nach dem Oberbegriff des Anspruches 1 . The invention relates to a filter device, in particular for gas filtration, for example, to an air filter for motor vehicles, according to the preamble of claim 1.
Stand der Technik State of the art
In der WO 201 1/104107 A1 wird ein Luftfilter für die Brennkraftmaschine eines Kraftfahrzeugs beschrieben. Der Luftfilter weist in einem Filtergehäuse ein ringförmiges Fil- terelement auf, das in seiner Position im Filtergehäuse von einem Gehäusedeckel verschließbar ist. Der Gehäusedeckel ist mittels eines Bajonettverschlusses am Filtergehäuse lösbar befestigt, wobei der Gehäusedeckel in eine am Filtergehäuse ausgebildete Deckelaufnahme axial einsetzbar und im eingesetzten Zustand zwischen einer Entriegelungs- und einer Verriegelungsstellung verdrehbar ist. In WO 201 1/104107 A1, an air filter for the internal combustion engine of a motor vehicle is described. The air filter has, in a filter housing, an annular filter element which can be closed by a housing cover in its position in the filter housing. The housing cover is releasably secured to the filter housing by means of a bayonet closure, wherein the housing cover is axially insertable into a cover housing formed on the filter housing and can be rotated in the inserted state between an unlocking and a locking position.
Offenbarung der Erfindung Disclosure of the invention
Der Erfindung liegt die Aufgabe zugrunde, eine Filtereinrichtung mit einfachen konstruktiven Maßnahmen so auszubilden, dass das Filterelement sicher im Filtergehäuse ge- halten ist. The invention is based on the object, a filter device with simple constructive measures in such a way that the filter element is kept safe in the filter housing.
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruches 1 gelöst. Die Unteransprüche geben zweckmäßige Weiterbildungen an. Die Erfindung bezieht sich auf eine Filtereinrichtung zur Filtration eines Fluids, insbesondere eines gasförmigen Fluids, wobei gegebenenfalls auch eine Filtration flüssiger Medien in Betracht kommt. Gemäß bevorzugter Ausführung wird die erfindungsgemäße Filtereinrichtung als Luftfilter für Kraftfahrzeuge eingesetzt, insbesondere für eine Brennkraftmaschine oder für die dem Innenraum des Kraftfahrzeugs zuzuführende Frischluft. This object is achieved with the features of claim 1. The dependent claims indicate expedient developments. The invention relates to a filter device for the filtration of a fluid, in particular a gaseous fluid, optionally also a filtration of liquid media into consideration. According to a preferred embodiment, the filter device according to the invention is used as an air filter for motor vehicles, in particular for a Internal combustion engine or for the interior of the motor vehicle to be supplied fresh air.
Die Filtereinrichtung weist ein Filterelement auf, das von dem zu reinigenden Fluid durchströmt wird und in einem Filtergehäuse aufgenommen ist, welches von einem Gehäusedeckel verschließbar ist. Am Filterelement ist ein erstes Formschlussteil angeordnet, das die äußere Mantelfläche des Filterelementes überragt und dem ein zweites Formschlussteil am Gehäusedeckel zugeordnet ist. Im montierten Zustand greifen die Formschlussteile am Filterelement und am Gehäusedeckel ineinander, so dass ein Formschluss insbesondere in Umfangsrichtung, gegebenenfalls auch in zumindest eine Achsrichtung entlang der Längsachse des Filterelementes gegeben ist. Aufgrund der formschlüssigen Verbindung zwischen dem Filterelement und dem Gehäusedeckel, der seinerseits lösbar am Filtergehäuse befestigbar ist, ist eine sichere Lagerung und Halterung des Filterelementes gegeben. The filter device has a filter element through which the fluid to be cleaned flows and is accommodated in a filter housing which can be closed by a housing cover. On the filter element, a first form-fitting part is arranged, which projects beyond the outer surface of the filter element and is associated with a second form-fitting part on the housing cover. In the mounted state, the form-fitting parts on the filter element and on the housing cover interlock, so that a positive connection is provided, in particular in the circumferential direction, optionally also in at least one axial direction along the longitudinal axis of the filter element. Due to the positive connection between the filter element and the housing cover, which in turn is releasably attachable to the filter housing, a secure storage and mounting of the filter element is given.
Vorteilhafterweise befindet sich das erste Formschlussteil am Filterelement auf Abstand zu einer zweiten Verbindungsstelle zwischen dem Filterelement und dem Gehäusedeckel, so dass insgesamt über zumindest zwei beabstandete Positionen eine Verbindung zwischen dem Gehäusedeckel und dem Filterelement gegeben ist. Die weitere Verbindung erfolgt insbesondere über die Stirnseite des Filterelementes, beispielsweise über einen axial überstehenden Bund, der in eine Ausnehmung im Gehäusedeckel dichtend einragt. Die erste und die zweite Verbindungsstelle zwischen Filterelement und Gehäusedeckel sind vorzugsweise axial zueinander beabstandet. Bei einer ring- bzw. hohlzylindrischen Ausführung des Filterelementes kann das erste Formschlussteil be- nachbart zu einer Stirnseite des Filterelementes angeordnet sein, welche der weiteren Verbindungsstelle axial gegenüberliegt. Advantageously, the first form-fitting part on the filter element at a distance to a second connection point between the filter element and the housing cover, so that a total of at least two spaced positions a connection between the housing cover and the filter element is given. The further connection takes place in particular via the end face of the filter element, for example via an axially projecting collar, which projects sealingly into a recess in the housing cover. The first and the second connection point between the filter element and the housing cover are preferably axially spaced from one another. In the case of an annular or hollow cylindrical design of the filter element, the first form-fitting part can be arranged adjacent to an end face of the filter element which lies axially opposite the further connection point.
Grundsätzlich vorteilhaft ist eine hohlzylindrische bzw. ringförmige Ausführung des Filterelementes, das von dem zu reinigenden Fluid vorteilhafterweise radial von außen nach innen durchströmt wird, wobei der Innenraum den Reinraum darstellt, über den das gereinigte Fluid axial abgeleitet wird. Basically advantageous is a hollow cylindrical or annular design of the filter element, which is advantageously flowed through by the fluid to be cleaned radially from outside to inside, wherein the interior is the clean room through which the purified fluid is discharged axially.
Bei hohlzylindrischer bzw. ringförmiger Ausführung des Filterelementes weist dieses an zumindest einer axialen Stirnseite, vorzugsweise an beiden axialen Stirnseiten eine Endscheibe auf, mit der das erste Formschlussteil verbunden ist. Es kann zweckmäßig sein, die Endscheibe aus Kunststoff zu fertigen und das erste Formschlussteil einteilig mit der Kunststoff-Endscheibe auszubilden. Bei ringförmiger Ausführung des Filterelementes überragt das erste Formschlussteil die zylindrische Mantelfläche in Radialrich- tung. Diese Ausführung hat den Vorteil, dass die formschlüssige Verbindung in konstruktiv einfacher Weise hergestellt werden kann, indem das erste Formschlussteil am Filterelement beispielsweise als ein Haken ausgebildet ist und das zweite Formschlusselement an der Innenseite des Gehäusedeckels als eine Aufnahmeöse, in die der Haken einführbar ist. Der Haken weist vorteilhafterweise einen ersten Hakenabschnitt auf, der sich in Radialrichtung erstreckt und an der stirnseitigen Endscheibe des Filterelementes befestigt ist, sowie einen zweiten Hakenabschnitt, der sich winklig zum ersten Hakenabschnitt erstreckt. In the case of a hollow-cylindrical or annular design of the filter element, the latter has at least one axial end face, preferably at both axial end faces End disk, with which the first form-fitting part is connected. It may be expedient to manufacture the end plate made of plastic and form the first form-fitting part in one piece with the plastic end plate. In the case of an annular design of the filter element, the first form-fitting part protrudes beyond the cylindrical lateral surface in the radial direction. This embodiment has the advantage that the positive connection can be made in a structurally simple manner by the first form-fitting part is formed on the filter element, for example, as a hook and the second positive locking element on the inside of the housing cover as a receiving lug into which the hook is inserted. The hook advantageously has a first hook portion which extends in the radial direction and is secured to the end-side end plate of the filter element, and a second hook portion which extends at an angle to the first hook portion.
Der zweite Hakenabschnitt weist entweder eine Orientierung parallel zur Filterelement- längsachse auf oder quer zur Filterelementlängsachse. Im erstgenannten Fall kann die formschlüssige Verbindung, welche durch das Ineinanderstecken von Haken und Aufnahmeöse bewerkstelligt wird, mittels einer ausschließlich axialen Einschubbewegung des Gehäusedeckels auf den Sitz im Filtergehäuse hergestellt werden. Bei einer Ausrichtung des zweiten Hakenabschnittes quer zur Filterelementlängsachse kommt eine Bajonettverbindung zwischen Filterelement und Gehäusedeckel in Betracht, bei der zunächst das Filterelement und der Gehäusedeckel axial angenähert werden und anschließend eine Rotationsbewegung um die Filterelementlängsachse zueinander ausführen, die zu der formschlüssigen Verbindung der Formschlussteile führt. Beim Bajo- nettverschluss besteht der Formschluss insbesondere in beide Achsrichtungen. The second hook portion either has an orientation parallel to the filter element longitudinal axis or transverse to the filter element longitudinal axis. In the former case, the positive connection, which is accomplished by the nesting of hook and receiving lug, be prepared by means of an exclusively axial insertion movement of the housing cover on the seat in the filter housing. When the second hook portion is oriented transversely to the filter element longitudinal axis, a bayonet connection between the filter element and the housing cover is considered, in which the filter element and the housing cover are initially approximated axially and subsequently execute a rotational movement about the filter element longitudinal axis, which leads to the positive connection of the form-fitting parts. In the case of the bayonet closure, the positive connection exists in particular in both axial directions.
Der Gehäusedeckel kann, gemäß einer weiteren vorteilhaften Ausführung, einen ersten Deckelabschnitt aufweisen, der im montierten Zustand der Stirnseite des Filterelementes vorgelagert ist, sowie einen zweiten Deckelabschnitt, der winklig zum ersten Deckelabschnitt ausgebildet ist und sich mit Abstand zur Mantelfläche des Filterelementes erstreckt. Das zweite, deckelseitige Formschlussteil befindet sich am zweiten Deckelabschnitt. Der erste und der zweite Deckelabschnitt, die vorzugsweise einteilig ausgeführt sind, bilden gemeinsam einen L-förmigen Querschnitt des Gehäusedeckels. Es kann zweckmäßig sein, an einer stirnseitigen Endscheibe, die mit einer zentralen Ausnehmung versehen ist, ein Dichtungsteil anzuspritzen, das im montierten Zustand dichtend am Gehäusedeckel anliegt. Das Dichtungsteil ist beispielsweise als ein 2- Komponenten-Teil ausgeführt. Gegebenenfalls kann in dieser Ausführung auf zusätzli- che Verbindungsmaßnahmen zwischen Filterelement und Gehäusedeckel verzichtet werden. Gleichwohl sind auch Ausführungen möglich, bei denen das Filterelement mechanisch oder auf sonstige Weise zusätzlich zur Formschlussverbindung mit dem Gehäusedeckel verbunden wird, beispielsweise durch eine Schraubverbindung. Gemäß noch einer weiteren zweckmäßigen Ausführung, die sich auf eine Bajonettverbindung zwischen Filterelement und Gehäusedeckel bezieht, sind an der Stirnseite des hohlzylindrischen bzw. ringförmigen Filterelementes einerseits und an dem der Stirnseite vorgelagerten Deckelabschnitt des Gehäusedeckels andererseits jeweils Formschlusselemente angeordnet, die für eine Bajonettverriegelung ausgebildet sind. Dies ermöglicht eine axiale Annäherung zwischen Filterelement und Gehäusedeckel bis zum Ineinandergreifen der Formschlusselemente und anschließend eine Drehung um die Filterelementlängsachse bis zum Erreichen der endgültigen Montageposition, in der die Formschlussteile, welche den Formschlusselementen an der Stirnseite abgewandt angeordnet sind, ineinandergreifen. The housing cover may, according to a further advantageous embodiment, have a first cover portion, which is upstream in the mounted state of the end face of the filter element, and a second cover portion which is formed at an angle to the first cover portion and extends at a distance from the lateral surface of the filter element. The second, lid-side form-fitting part is located on the second lid portion. The first and the second cover portion, which are preferably made in one piece, together form an L-shaped cross-section of the housing cover. It may be expedient, at a front-side end plate, which is provided with a central recess, to inject a sealing part, which rests sealingly on the housing cover in the mounted state. The sealing part is designed, for example, as a 2-component part. If necessary, additional connecting measures between the filter element and the housing cover can be dispensed with in this embodiment. However, embodiments are also possible in which the filter element is mechanically or otherwise connected in addition to the positive connection with the housing cover, for example by a screw connection. According to yet another expedient embodiment, which relates to a bayonet connection between the filter element and the housing cover, on the one hand and on the front side of the front cover portion of the housing cover on the other hand each form-fitting elements are arranged on the front side of the hollow cylindrical or annular filter element, which are designed for a bayonet lock. This allows an axial approach between the filter element and the housing cover until the interlocking of the positive locking elements and then a rotation about the filter element longitudinal axis until reaching the final mounting position, in which the form-fitting parts, which are arranged facing away from the form-locking elements on the front side, intermesh.
Es kann zweckmäßig sein, das erste Formschlussteil, welches beispielsweise hakenförmig ausgebildet ist, elastisch federnd auszuführen. Dies hat den Vorteil, dass Bauteil- und Montagetoleranzen besser ausgeglichen werden können. Gemäß einer weiteren zweckmäßigen Ausführung weist das erste Formschlussteil, welches am Filterelement angeordnet ist, ein Scharnier auf, beispielsweise ein Filmscharnier, das in zumindest zwei verschiedene Stellungen klappbar ist. Dies ermöglicht es, dass das erste Formschlussteil während der Verriegelungsbewegung mit dem Gehäusedeckel zunächst bei aufgeklapptem Scharnier in einer ersten Position verharrt, in der noch kein Formschluss mit dem zweiten Formschlussteil besteht, und erst nach dem Erreichen einer axialen Endposition in die zweite Position verstellt wird, in der der Formschluss mit dem zweiten Formschlussteil hergestellt ist, beispielsweise zum Realisieren eines Bajonettverschlusses. Die Scharnierachse verläuft dabei quer zur Filterelementlängsachse. Zweckmäßigerweise kann aber auch eine Scharnierachse längs zur Filterelement- längsachse ausgebildet sein, um eine Druckknopfbefestigung zu ermöglichen. It may be expedient, the first form-fitting part, which is formed, for example, hook-shaped, elastically resilient perform. This has the advantage that component and assembly tolerances can be better compensated. According to a further expedient embodiment, the first form-fitting part, which is arranged on the filter element, has a hinge, for example a film hinge, which can be folded in at least two different positions. This makes it possible for the first form-fitting part to remain in the first position during the locking movement with the housing cover when the hinge is unfolded, in which there is still no positive connection with the second form-fitting part, and only adjusted to the second position after reaching an axial end position. in which the positive connection with the second form-fitting part is produced, for example for realizing a bayonet closure. The hinge axis runs transversely to the filter element longitudinal axis. Conveniently, however, a hinge axis can also be formed longitudinally of the filter element longitudinal axis in order to enable a push-button fastening.
Kurze Beschreibung der Zeichnungen Brief description of the drawings
Weitere Vorteile und zweckmäßige Ausführungen sind den weiteren Ansprüchen, der Figurenbeschreibung und den Zeichnungen zu entnehmen. Es zeigen: Further advantages and expedient embodiments can be taken from the further claims, the description of the figures and the drawings. Show it:
Fig. 1 einen Luftfilter mit einem ringförmigen Filterelement in einem Filtergehäuse, welches von einem Gehäusedeckel zu verschließen ist, mit einem seitlich an einer Stirnseite des Filterelementes überstehenden, hakenförmigen Formschlussteil, dem eine Aufnahmeöse an der Innenwand des Filterdeckels zugeordnet ist, 1 an air filter with an annular filter element in a filter housing, which is to be closed by a housing cover, with a laterally protruding on an end side of the filter element, hook-shaped form-fitting part, which is associated with a receiving lug on the inner wall of the filter cover
Fig. 2 das Filterelement aus Fig. 1 in einer perspektivischen Einzeldarstellung, 2 shows the filter element from FIG. 1 in a perspective detail view, FIG.
Fig. 3 eine Innenansicht eines Gehäusedeckels mit einer Aufnahmeöse in einer weiteren Ausführung, 3 is an interior view of a housing cover with a receiving eye in a further embodiment,
Fig. 4 in vergrößerter Darstellung ein Filmscharnier, über das ein hakenförmiges Formschlusselement an der stirnseitigen Endscheibe des Filterelementes angeordnet ist, 4 is an enlarged view of a film hinge, via which a hook-shaped form-locking element is arranged on the end-side end plate of the filter element,
Fig. 5 ein Filterelement mit einem Gehäusedeckel in einer weiteren Ausführung, bei der das hakenförmige Formschlussteil am Filterelement einen in Querrichtung sich erstreckenden Hakenabschnitt aufweist, 5 shows a filter element with a housing cover in a further embodiment, in which the hook-shaped form-fitting part on the filter element has a transversely extending hook portion,
Fig. 6 der Luftfilter gemäß Fig. 5 in einer stirnseitigen Ansicht auf das Filterelement und den Gehäusedeckel, 6 shows the air filter according to FIG. 5 in an end view of the filter element and the housing cover, FIG.
Fig. 7 der Gehäusedeckel des Ausführungsbeispiels gemäß Fig. 5 und 6 in perspektivischer Einzeldarstellung, 7 shows the housing cover of the embodiment according to FIGS. 5 and 6 in a perspective detail view,
Fig. 8 ein weiteres Ausführungsbeispiel eines Luftfilters, bei dem das Filterelement über einen Bajonettverschluss mit dem Gehäusedeckel verriegelt wird, Fig. 9 der Gehäusedeckel des Ausführungsbeispiels nach Fig. 8 in perspektivischer Einzeldarstellung. In den Figuren sind gleiche Bauteile mit gleichen Bezugszeichen versehen. Ausführungsform(en) der Erfindung 8 shows a further embodiment of an air filter in which the filter element is locked to the housing cover via a bayonet closure, Fig. 9, the housing cover of the embodiment of FIG. 8 in perspective detail view. In the figures, the same components are provided with the same reference numerals. Embodiment (s) of the invention
In den Fig. 1 und 2 ist als erstes Ausführungsbeispiel eine Filtereinrichtung 1 darge- stellt, die als Luftfilter für die Brennkraftmaschine eines Kraftfahrzeugs eingesetzt wird. Die Filtereinrichtung 1 weist ein Filtergehäuse 2 auf, in dem ein Aufnahmeraum zur Aufnahme eines Filterelementes 4 gebildet ist, wobei der Aufnahmeraum von einem Gehäusedeckel 3 verschließbar ist. Das Filterelement 4 ist hohlzylindrisch bzw. ringförmig ausgebildet und wird bezogen auf die Filterelementlängsachse 5 radial von außen nach innen von der angesaugten Umgebungsluft durchströmt. Der Innenraum des Filterelementes 4 stellt den Reinraum dar, über den die axiale Ableitung erfolgt. FIGS. 1 and 2 show as the first exemplary embodiment a filter device 1, which is used as an air filter for the internal combustion engine of a motor vehicle. The filter device 1 has a filter housing 2, in which a receiving space for receiving a filter element 4 is formed, wherein the receiving space of a housing cover 3 is closed. The filter element 4 is formed as a hollow cylinder or annular and is flowed through radially in relation to the filter element longitudinal axis 5 from the outside to the inside of the sucked ambient air. The interior of the filter element 4 represents the clean room through which the axial discharge takes place.
Das Filterelement 4 ist an beiden axialen Stirnseiten mit jeweils einer Endscheibe 6, 9 versehen. An der dem Boden des Filtergehäuses 2 benachbarten Endscheibe 6 ist ein erstes, hakenförmiges Formschlussteil 7 angeordnet, das im montierten Zustand in ein als Aufnahmeöse ausgebildetes, zweites Formschlussteil 8 an der Innenwand des Gehäusedeckels 3 formschlüssig einragt. Die Endscheibe 6 ist zweckmäßigerweise als Kunststoffbauteil ausgeführt, das hakenförmige, erste Formschlussteil 7 kann einteilig mit der Endscheibe 6 ausgebildet sein. The filter element 4 is provided on both axial end faces, each with an end plate 6, 9. At the bottom of the filter housing 2 adjacent end plate 6, a first hook-shaped form-fitting part 7 is arranged, which protrudes positively in the assembled state in a trained as a receiving lug, second form-fitting part 8 on the inner wall of the housing cover 3. The end plate 6 is expediently designed as a plastic component, the hook-shaped, first form-fitting part 7 may be formed integrally with the end plate 6.
Das hakenförmige Formschlussteil 7 weist einen ersten Hakenabschnitt 7a auf, der sich bezogen auf die Filterelementlängsachse 5 radial nach außen erstreckt und die Mantelfläche des Filterelementes in Radialrichtung überragt. An den radialen Hakenabschnitt 7a schließt sich ein in Achsrichtung verlaufender, stiftförmiger Hakenabschnitt 7b an, der im montierten Zustand in das als Aufnahmeöse ausgebildete zweite Formschlussteil 8 einragt, wobei die Öffnung in der Aufnahmeöse ebenfalls in Achsrichtung verläuft. Im zusammengesetzten Zustand besteht somit in Umfangsrichtung sowie axial in eine Richtung eine formschlüssige Verbindung zwischen dem Filterelement 4 und dem Gehäusedeckel 3 über die Formschlussteile 7, 8. Der Gehäusedeckel 3 weist zwei Deckelabschnitte 3a, 3b auf, die einteilig miteinander ausgebildet sind, jedoch zueinander winklig angeordnet sind. Der erste Deckelabschnitt 3a ist der oberen Stirnfläche des Filterelementes 4 vorgelagert, an der die Endscheibe 9 angeordnet ist; die obere Endscheibe 9 ist der unteren Endscheibe 6 axial gegenüberliegend angeordnet, wobei das hakenförmige Formschlussteil 7 an der unteren Endscheibe 6 angeordnet ist. The hook-shaped form-fitting part 7 has a first hook portion 7a, which extends radially outward relative to the filter element longitudinal axis 5 and projects beyond the lateral surface of the filter element in the radial direction. The radial hook portion 7a is adjoined by a pin-shaped hook portion 7b extending in the axial direction, which in the assembled state protrudes into the second form-fitting part 8 designed as a receiving lug, the opening also extending in the axial direction in the receiving lug. In the assembled state there is thus in the circumferential direction and axially in one direction a positive connection between the filter element 4 and the housing cover 3 via the form-fitting parts 7, 8. The housing cover 3 has two cover sections 3a, 3b, which are integrally formed with each other, but are arranged at an angle to each other. The first lid portion 3a is disposed upstream of the upper end surface of the filter element 4, on which the end plate 9 is arranged; the upper end disk 9 is arranged axially opposite the lower end disk 6, wherein the hook-shaped form-fitting part 7 is arranged on the lower end disk 6.
Einteilig mit der oberen Endscheibe 9 ist ein Kragen 10 ausgebildet, der axial übersteht und eine stirnseitige Öffnung im Filterelement 4 begrenzt, die mit dem die Reinseite darstellenden Innenraum kommuniziert. Der Kragen 10 ragt in eine Ausnehmung in dem Deckelabschnitt 3a und kann mit dem Deckelabschnitt 3a verschraubt sein. Hierfür sind in die Endscheibe 9 des Filterelementes 4 Schraubdome 1 1 eingebracht. Für eine strömungsdichte Verbindung zwischen dem Kragen 10 und dem Gehäusedeckel 3 kann ein zusätzlicher Dichtring vorgesehen sein, der um oder in den Kragen 10 gelegt wird. Eine Dichtung kann außerhalb oder auch innerhalb des Kragens 10 angeordnet sein. Möglich ist es auch, den Kragen 10 als 2-Komponenten-Bauteil auszubilden, das dichtende Eigenschaften hat und das mit dem Einführen in die Ausnehmung in dem Deckelabschnitt 3a zugleich dichtend im Deckelabschnitt aufgenommen ist. In diesem Fall kann auf eine Verschraubung zwischen dem Filterelement und dem Gehäusedeckel auch verzichtet werden. Integral with the upper end disk 9, a collar 10 is formed, which projects axially and defines an end opening in the filter element 4, which communicates with the inner side representing the interior. The collar 10 protrudes into a recess in the lid portion 3a and may be screwed to the lid portion 3a. For this purpose, 4 screw 1 1 are introduced into the end plate 9 of the filter element. For a flow-tight connection between the collar 10 and the housing cover 3, an additional sealing ring may be provided, which is placed around or in the collar 10. A seal may be disposed outside or inside the collar 10. It is also possible to form the collar 10 as a 2-component component, which has sealing properties and which, at the same time, is sealingly received in the cover section when inserted into the recess in the cover section 3a. In this case, can also be dispensed with a screw connection between the filter element and the housing cover.
Die beiden Deckelabschnitte 3a und 3b liegen in einem Winkel zueinander, der, wie Fig. 1 zu entnehmen, größer ist als 90°. Grundsätzlich möglich ist aber auch eine Ausführung in einem Winkel von 90° oder kleiner als 90°. The two lid portions 3a and 3b are at an angle to each other, which, as shown in FIG. 1, is greater than 90 °. In principle, however, is also possible at an angle of 90 ° or less than 90 °.
Auch im Ausführungsbeispiel gemäß Fig. 3 weist der Gehäusedeckel 3 zwei Deckelabschnitte 3a, 3b auf, die zueinander unter einem Winkel angeordnet sind. In den Deckel- abschnitt 3a ist eine Ausnehmung 12 zur Aufnahme des Kragens 10 an der Stirnseite des Filterelementes 4 eingebracht. Das zweite, deckelseitige Formschlussteil 8 weist zwei an der Deckelinnenseite angeformte Stege auf, die eine zwischenliegende Öffnung begrenzen. Die Stege sind elastisch federnd ausgebildet, so dass das hakenförmige erste Formschlussteil am Filterelement sowohl axial als auch radial in die zwischen den Stegen liegende Aufnahmeöffnung des Formschlussteils 8 eingeführt werden kann. Also in the embodiment according to FIG. 3, the housing cover 3 has two cover sections 3a, 3b, which are arranged at an angle to one another. In the lid section 3a, a recess 12 for receiving the collar 10 on the end face of the filter element 4 is introduced. The second, lid-side form-fitting part 8 has two integrally formed on the inside of the lid webs, which define an intermediate opening. The webs are elastically resilient, so that the hook-shaped first form-fitting part on the filter element can be introduced both axially and radially into the receiving opening of the form-fitting part 8 lying between the webs.
Im Ausführungsbeispiel gemäß Fig. 4 ist in den ersten Hakenabschnitt 7a des haken- förmigen Formschlussteils 7 ein Filmscharnier 13 in Form einer verjüngten Wandstärke eingebracht, so dass der Hakenabschnitt 7a um die Scharnierachse verschwenkt werden kann. Die Scharnierachse, die quer zur Filterelementlängsachse verläuft, ermöglicht beispielsweise einen Bajonettverschluss zwischen Filterelement und Gehäusedeckel, indem zunächst das Filterelement und der Gehäusedeckel zueinander axial an- genähert und anschließend um die Filterelementlängsachse zueinander verdreht werden. Nach dem Erreichen der endgültigen Montageposition kann das hakenförmige Formschlussteil 7 um das Filmscharnier 13 geklappt werden, so dass das hakenförmige Formschlussteil in Formschlussposition mit dem zugeordneten Formschlussteil an der Innenseite des Gehäusedeckels gelangt. In the exemplary embodiment according to FIG. 4, a film hinge 13 in the form of a tapered wall thickness is introduced into the first hook section 7a of the hook-shaped form-fitting part 7, so that the hook section 7a can be pivoted about the hinge axis. The hinge axis extending transversely to the filter element longitudinal axis, for example, allows a bayonet between filter element and housing cover by first the filter element and the housing cover to each other axially approached and then rotated around the filter element longitudinal axis to each other. After reaching the final mounting position, the hook-shaped form-fitting part 7 can be folded around the film hinge 13, so that the hook-shaped form-fitting part comes into positive engagement position with the associated form-fitting part on the inside of the housing cover.
In den Fig. 5 bis 7 ist ein weiteres Ausführungsbeispiel dargestellt, bei dem das Filterelement 4 im Bereich seiner stirnseitigen Endscheibe 6 ebenfalls mit einem hakenförmigen, ersten Formschlussteil 7 versehen ist. Der erste Hakenabschnitt 7a kragt radial aus und überragt die Mantelfläche des Filterelementes 4 in Radialrichtung. Der sich da- ran anschließende, zweite Hakenabschnitt 7b erstreckt sich jedoch im Unterschied zum Ausführungsbeispiel gemäß den Fig. 1 , 2 nicht in Achsrichtung, sondern quer zur Filterelementlängsachse 5. Das zweite Formschlussteil 8 an der Innenseite des Deckelteils 3b des Gehäusedeckels 3 weist eine ebenfalls in Querrichtung weisende Öffnung auf, welche den Hakenabschnitt 7b im montierten Zustand aufnimmt. Die Montageposition wird über einen Bajonettverschluss erreicht, bei dem nach dem axialen Annähern das Filterelement 4 und der Gehäusedeckel 3 relativ zueinander um die Filterelementlängsachse 5 verdreht werden, bis der Hakenabschnitt 7b in die Öffnung des Formschlussteils 8 einragt. Im Ausführungsbeispiel gemäß den Fig. 8 und 9 erfolgt die Verbindung zwischen dem Filterelement 4 und dem Gehäusedeckel 3 ebenfalls über einen Bajonettverschluss. An der oberen Endscheibe 9 sind am Kragen 10 über den Umfang verteilt mehrere Formschlusselemente 14 angeordnet, denen weitere Formschlusselemente 15 am Deckelabschnitt 3a des Gehäusedeckels 3 zugeordnet sind. Die Formschlusselemente 14, 15 können durch axiale Annäherung von Filterelement und Gehäusedeckel 3 und anschließende Rotation um die Filterelementlängsachse 5 in eine formschlüssige Position zueinander gebracht werden, in welcher das Filterelement 4 in Achsrichtung formschlüssig am Gehäusedeckel 3 gehalten ist. 5 to 7, a further embodiment is shown, in which the filter element 4 is also provided in the region of its end-side end plate 6 with a hook-shaped, first form-fitting part 7. The first hook portion 7a protrudes radially and projects beyond the lateral surface of the filter element 4 in the radial direction. However, in contrast to the exemplary embodiment according to FIGS. 1 and 2, the second hook section 7b adjoining it does not extend in the axial direction but transversely to the filter element longitudinal axis 5. The second form-fitting part 8 on the inside of the cover part 3b of the housing cover 3 also has one in the transverse direction opening which receives the hook portion 7b in the mounted state. The mounting position is achieved via a bayonet closure, in which, after the axial approach, the filter element 4 and the housing cover 3 are rotated relative to one another around the filter element longitudinal axis 5 until the hook section 7b projects into the opening of the form-fitting part 8. In the embodiment according to FIGS. 8 and 9, the connection between the filter element 4 and the housing cover 3 also takes place via a bayonet closure. At the upper end disk 9, a plurality of interlocking elements 14 are arranged on the collar 10 distributed over the circumference, to which further interlocking elements 15 on the cover section 3a of the housing cover 3 are assigned. The form-locking elements 14, 15th can be brought by axial approximation of the filter element and the housing cover 3 and subsequent rotation about the filter element longitudinal axis 5 in a positive position to each other, in which the filter element 4 is held in the axial direction positively on the housing cover 3.
Ein weiterer Formschluss wird über das erste Formschlussteil 7 im Bereich der unteren Endscheibe des Filterelementes 4 und das zweite Formschlussteil 8 an der Innenseite des Deckelabschnittes 3b des Gehäusedeckels 3 erreicht. Das erste Formschlussteil 7 ist hakenähnlich ausgebildet und besitzt einen radial auskragenden ersten Hakenab- schnitt 7a sowie einen zweiten, sich in Achsrichtung erstreckenden, stiftförmigen Hakenabschnitt 7b. Das an der Innenseite des Gehäusedeckels angeordnete zweite Formschlussteil 8 weist eine in Querrichtung halboffene Aufnahmeöffnung auf, in die der Hakenabschnitt 7b bei der Rotationsbewegung während des bajonettartigen Verschließens in Querrichtung eingeführt wird. Another form fit is achieved via the first form-fitting part 7 in the region of the lower end disk of the filter element 4 and the second mold part 8 on the inside of the cover portion 3b of the housing cover 3. The first form-fitting part 7 is designed hook-like and has a radially projecting first hook portion 7a and a second, extending in the axial direction, pin-shaped hook portion 7b. The arranged on the inside of the housing cover second form-fitting part 8 has a semi-open in the transverse direction receiving opening into which the hook portion 7b is introduced in the rotational movement during the bayonet-type closing in the transverse direction.

Claims

Ansprüche claims
1 . Filtereinnchtung, insbesondere zur Gasfiltration, insbesondere Luftfilter für Kraftfahrzeuge, mit einem Filterelement (4), das in einem Filtergehäuse (2) aufgenommen ist, welches von einem Gehäusedeckel (3) verschließbar ist, dadurch ge- kennzeichnet, dass am Filterelement (4) ein die äußere Mantelfläche überragendes, erstes Formschlussteil (7) angeordnet ist, dem ein zweites Formschlussteil (8) am Gehäusedeckel (3) zugeordnet ist, wobei die Formschlussteile (7, 8) im montierten Zustand ineinandergreifen.  1 . Filter device, in particular for gas filtration, in particular air filters for motor vehicles, having a filter element (4) accommodated in a filter housing (2), which can be closed by a housing cover (3), characterized in that the filter element (4) the outer jacket surface protruding, first form-fitting part (7) is arranged, which is associated with a second form-fitting part (8) on the housing cover (3), wherein the form-fitting parts (7, 8) engage in the assembled state.
2. Filtereinrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass das Filterelement (4) hohlzylindrisch ausgebildet ist und das erste Formschlussteil (7) die zylindrische Mantelfläche radial überragt. 2. Filter device according to claim 1, characterized in that the filter element (4) is formed as a hollow cylinder and the first form-fitting part (7) projects radially beyond the cylindrical surface.
3. Filtereinrichtung nach Anspruch 2, dadurch gekennzeichnet, dass das Filterele- ment (4) an mindestens einer axialen Stirnseite eine Endscheibe (9) aufweist und das erste Formschlussteil (7) an der Endscheibe (9) angeordnet ist. 3. Filter device according to claim 2, characterized in that the filter element (4) has an end disk (9) on at least one axial end side and the first form-fitting part (7) is arranged on the end disk (9).
4. Filtereinrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass an einer stirnseitigen Endscheibe (9), die eine zentrale Ausnehmung aufweist, ein Dichtungs- teil angespritzt ist, das dichtend am Gehäusedeckel (3) anliegt. 4. Filter device according to claim 2 or 3, characterized in that on a front end plate (9) which has a central recess, a sealing part is molded, which bears sealingly on the housing cover (3).
5. Filtereinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das erste Formschlussteil (7) als seitlich überstehender Haken ausgebildet ist. 5. Filter device according to one of claims 1 to 4, characterized in that the first form-fitting part (7) is designed as a laterally projecting hook.
6. Filtereinrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Haken einen sich in Längsrichtung des Filterelements (4) erstreckenden Hakenabschnitt (7a, 7b) aufweist. 6. Filter device according to claim 5, characterized in that the hook has a in the longitudinal direction of the filter element (4) extending hook portion (7a, 7b).
7. Filtereinrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Haken ei- nen sich quer zur Längsrichtung des Filterelements (4) erstreckenden Hakenabschnitt (7a, 7b) aufweist. 7. Filter device according to claim 5, characterized in that the hook has a NEN transversely to the longitudinal direction of the filter element (4) extending hook portion (7a, 7b).
8. Filtereinrichtung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass das zweite Formschlussteil (8) als an der Innenseite des Gehäusedeckels (3) angeordnete Aufnahmeöse ausgebildet ist. 8. Filter device according to one of claims 5 to 7, characterized in that the second form-fitting part (8) as on the inside of the housing cover (3) arranged receiving lug is formed.
9. Filtereinrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Gehäusedeckel (3) einen ersten Deckelabschnitt (3a) aufweist, der einer Stirnseite des Filterelements (4) vorgelagert ist, sowie einen zweiten, winklig angeordneten Deckelabschnitt (3b), der Träger des zweiten Formschlussteils (8) ist. 9. Filter device according to one of claims 1 to 8, characterized in that the housing cover (3) has a first cover portion (3a), which is upstream of an end face of the filter element (4), and a second, angularly arranged cover portion (3b), the carrier of the second form-fitting part (8).
10. Filtereinrichtung nach Anspruch 9, dadurch gekennzeichnet, dass an der Stirnseite des Filterelements (4) und am ersten Deckelabschnitt (3a) Formschlusselemente (14, 15) für eine Bajonettverriegelung zwischen Gehäusedeckel (3) und Filterelement (4) angeordnet sind. 10. Filter device according to claim 9, characterized in that on the end face of the filter element (4) and on the first cover portion (3a) form-fitting elements (14, 15) for a bayonet lock between the housing cover (3) and filter element (4) are arranged.
1 1 . Filtereinrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass das erste Formschlussteil (7) elastisch federnd ausgebildet ist. 1 1. Filter device according to one of claims 1 to 10, characterized in that the first form-fitting part (7) is elastically resilient.
12. Filtereinrichtung nach einem der Ansprüche 1 bis 1 1 , dadurch gekennzeichnet, dass das erste Formschlussteil (7) ein Scharnier (13) aufweist und in zumindest zwei verschiedene Stellungen klappbar ist. 12. Filter device according to one of claims 1 to 1 1, characterized in that the first form-fitting part (7) has a hinge (13) and is foldable in at least two different positions.
13. Filterelement mit einem die äußere Mantelfläche überragendes, erstes Formschlussteil (7), aufnehmbar in einer Filtereinrichtung nach einem der vorhergehenden Ansprüche. 13. Filter element with a the outer lateral surface superior, first form-fitting part (7), receivable in a filter device according to one of the preceding claims.
EP13750718.2A 2012-08-22 2013-08-22 Filter device, in particular for gas filtration Withdrawn EP2888024A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012016558.7A DE102012016558A1 (en) 2012-08-22 2012-08-22 Filter device, in particular for gas filtration
PCT/EP2013/067423 WO2014029828A1 (en) 2012-08-22 2013-08-22 Filter device, in particular for gas filtration

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US (1) US9920719B2 (en)
EP (1) EP2888024A1 (en)
CN (1) CN104540572B (en)
DE (1) DE102012016558A1 (en)
WO (1) WO2014029828A1 (en)

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CN104540572A (en) 2015-04-22
CN104540572B (en) 2017-05-10
WO2014029828A1 (en) 2014-02-27
DE102012016558A1 (en) 2014-02-27
US20150167602A1 (en) 2015-06-18
US9920719B2 (en) 2018-03-20

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