DE102018124624B4 - Plastic component for connection to a filter element and filter device for filtering a fluid - Google Patents

Abstract

Plastic component (110, 170) for connection to a filter element (160), the plastic component (110, 170) having at least one contact surface (120, 181, 182) surrounding a through-opening (104) of the plastic component (110, 170). and which can be brought into contact with the filter element (160), the plastic component (110, 170) being characterized by the following features: - the at least one contact surface (120, 181, 182) has at least one circumferential elevation (121, 122) which can be connected to the filter element (160);- the elevation (121, 122) has a first side surface (121_1, 122_1) and a second side surface (121_2, 122_2);- the first side surface (121_1, 122_1) and the second side surface (121 2, 122_2) enclose an included angle (124) of at least 90° with one another, - the first side surface (121_1, 122_1) of the elevation (121, 122) points in the direction of the through-opening (104) and the second side surface (121_2, 122_2) of the survey (121, 122) points away from the through-opening (104);- the first side surface (121_1, 122_1) of the elevation (121, 122) encloses a first angle (131) with a surface normal (126) of the contact surface (120);- the second side surface ( 121_2, 122_2) of the elevation (121, 122) encloses a second angle (132) with the surface normal (126) of the contact surface (120); and- the first angle (131) is smaller than the second angle (132).

Description

The present invention relates to a plastic component for connection to a filter element. Furthermore, the present invention relates to a filter device for filtering a fluid.

Filter devices, which can be part of a suction filter or part of a pressure filter, are used to filter oil in engines and transmissions. Plastic components for filter devices and filter devices containing such plastic components are made of US 501 555 A , DE 10 2005 010 099 A1 , U.S. 5,817,236 A , DE 2006 027 463 A1 known. In the case of suction filters, a pump is arranged at a filter outlet opening of the filter device, the pump sucking the oil to be filtered through a filter element or through a filter medium by means of negative pressure. It is customary to arrange a suction filter, which can also be referred to as a suction oil filter device, directly in an oil sump of an oil pan, with all of the oil to be filtered flowing through this suction oil filter device. The associated filter housing of a filter device usually has an upper shell and a lower shell, with a filter element or a filter medium being clamped between the upper shell and the lower shell.

To connect the filter element to a filter housing of the filter device, the filter element can be connected to the filter housing by means of ultrasonic welding. A sonotrode is used for this purpose, with the filter element being positioned between the sonotrode and the area of the filter housing and being connected or welded to the filter housing by means of the introduction of energy through the sonotrode. The filter housing is designed as a plastic component and is connected to the filter element.

This bonding process can damage the filter element, allowing uncleaned oil to pass from a dirty side of the filter device to a clean side, rendering the filter device essentially ineffective.

The object of the present invention is to provide an improved plastic component for connection to a filter element and an improved filter device for filtering a fluid.

The object on which the present invention is based is achieved by a plastic component having the features of claim 1 . Advantageous configurations of the plastic component are described in the claims dependent on claim 1 .

More specifically, the object on which the present invention is based is achieved by a plastic component for connection to a filter element, the plastic component having at least one contact surface which runs around a through-opening of the plastic component and which can be brought into contact with the filter element. The plastic component is characterized in that the at least one contact surface has at least one circumferential elevation which can be connected to the filter element, the elevation having a first side surface and a second side surface, and the first side surface and the second side surface having an included angle of at least include 90°.

A more reliable connection to a filter element is made possible by means of the plastic component according to the invention, since the connection strength between the filter element and the contact surface, more precisely between the filter element and the elevation of the contact surface, is increased. Furthermore, the plastic component according to the invention has the advantage that the filter element is not damaged or less damaged after connection to the contact surface of the plastic component, more precisely with the elevation of the contact surface, so that the connection between the plastic component and the filter element has increased long-term stability.

The elevation of the contact surface is preferably formed in one piece with the latter, so that the elevation is integrally connected to the contact surface. More preferably, the elevation is an integral part of the contact surface. More preferably, the contact surface is an integral part of the plastic component.

Since the contact surface runs all the way around the through-opening of the plastic component, the elevation also runs all the way around the through-opening of the plastic component.

The elevation of the contact surface can also be referred to as an elevation rib or as a connecting rib or as a connecting elevation or simply as a rib. In particular, the survey can be referred to as an energy director.

The first side surface of the elevation can also be referred to as the first flank or flank surface of the elevation and the second side surface of the elevation can also be referred to as the second flank or flank surface of the elevation.

The feature according to which the first side surface and the second side surface enclose an included angle of at least 90° with one another is to be understood in such a way that in cross section through the Enclose survey the first side surface and the second side surface together an included angle of at least 90 °. In this case, the cross section through the elevation runs transversely and preferably perpendicularly to a longitudinal extension of the elevation.

The feature according to which the included angle is at least 90° is to be understood in such a way that a first tangent applied to the first side surface always encloses an angle which is equal to or greater than 90° with a second tangent applied to the second side surface.

The included angle is preferably between 90° and 175°. More preferably, the included angle is between 90° and 150°. More preferably, the included angle is between 100° and 140°. More preferably, the included angle is between 110° and 130°.

The plastic component is preferably designed in such a way that the elevation has a curve, by means of which the first side surface is connected to the second side surface.

The rounding results in a continuous transition from the first side surface to the second side surface, so that the possibility of damage to the filter element is further reduced during the connection process of the filter element with the contact surface, more precisely with the elevation of the contact surface.

The feature according to which the first side surface is connected to the second side surface by means of a curve is to be understood in such a way that the first side surface and the second side surface each merge into the curve.

A convex surface of the fillet is oriented away from the abutment surface.

The rounding is preferably formed in the shape of a partial circle. More preferably, the radius of the rounding is between 0.1mm and 1mm.

The plastic component is preferably designed in such a way that the contact surface has at least two circumferential elevations which are connected to the filter element, with a second elevation being formed circumferentially around the first elevation, with the second elevation having a first side surface and a second side surface, and wherein the first side surface and the second side surface enclose an included angle of at least 90° with one another.

The correspondingly designed plastic component has even more stability, since the filter element is reliably connected to the plastic component and the connection strength between the filter element and the contact surface, more precisely between the filter element and the two elevations (first elevation and second elevation) of the contact surface, is increased . Furthermore, the plastic component according to the invention has the advantage that the filter element is not damaged or is less damaged after connection to the contact surface of the plastic component, more precisely to the elevations of the contact surface, so that the correspondingly designed plastic component has increased long-term stability.

The first elevation and the second elevation of the contact surface are preferably formed in one piece with the latter, so that the first and second elevations are integrally connected to the contact surface. More preferably, the first and second elevations are an integral part of the contact surface. More preferably, the contact surface is an integral part of the plastic component.

Since the contact surface runs around the through-opening of the plastic component, the first and second elevations also run around the through-opening of the plastic component.

The first and second bumps of the abutment surface may also be referred to as first and second bump ribs, or as first and second connecting ribs, or as first and second connecting bumps, or simply as first and second ribs. In particular, the first and second bumps may be referred to as first and second energy directors.

The respective first side surfaces of the first and second elevations can also be referred to as first flanks or flank surfaces of the first and second elevations and the respective second side surfaces of the first and second elevations can also be referred to as second flanks or flank surfaces of the first and second elevations.

The feature according to which the respective first side surfaces and the respective second side surfaces of the first and second elevations enclose an included angle of at least 90° with one another is to be understood in such a way that in the cross section through the respective first and second elevations the respective first side surfaces and the respective second side faces each enclose an included angle of at least 90°. The respective cross sections through the first and second elevations run transversely and preferably perpendicularly to the respective longitudinal extensions of the first and second elevations.

The feature according to which the included angle is at least 90° is to be understood as that a first tangent applied to the first side surface always encloses an angle which is equal to or greater than 90° with a second tangent applied to the second side surface.

The plastic component is preferably designed in such a way that the second elevation has a curve, by means of which the first side surface of the second elevation is connected to the second side surface of the second elevation.

The rounding of the second elevation results in a smooth transition from the first side surface to the second side surface of the second elevation, so that during the process of connecting the filter element to the contact surface, more precisely to the second elevation of the contact surface, the possibility of damage to the filter element is further reduced is.

The feature according to which the first side surface is connected to the second side surface of the second elevation by means of a curve is to be understood in such a way that the first side surface and the second side surface of the second elevation each merge into the curve.

A convex surface of the fillet is oriented away from the abutment surface.

The rounding is preferably formed in the shape of a partial circle. More preferably, the radius of the rounding is between 0.1mm and 1mm.

More preferably, the plastic component is designed such that the elevation or elevations has or have a base that extends perpendicularly from the contact surface and is or are arranged between the contact surface and the first and second side surfaces.

The plastic component is preferably designed in such a way that the elevation or elevations is or are formed from a thermoplastic material.

The thermoplastic material preferably has polyamide 6.6. More preferably, the thermoplastic consists of polyamide 6.6. According to the invention, there are no restrictions with regard to the selection of the thermoplastic material.

More preferably, the plastic component is designed in such a way that a height extension of the elevation or elevations corresponds to a thickness extension of the filter element.

More preferably, the elevation of the elevation or elevations is up to five times the thickness of the filter element. More preferably, the thickness of the filter element is up to ten times the height of the elevation or elevations.

More preferably, the height of the filter element is up to five times the thickness of the elevation or elevations. More preferably, the thickness of the elevation or elevations is up to ten times the height of the elevation or the filter element.

More preferably, the plastic component is designed in such a way that the filter element is or are connected to the elevation or elevations by means of ultrasonic welding.

The correspondingly designed plastic component has a high level of stability and reliability, since the connection of the filter element to the plastic component is very stable through the use of ultrasonic welding and the filter element is not damaged during welding.

The object on which the present invention is based is also achieved by a filter device which has a filter housing with at least one inlet opening for admitting a fluid into a housing interior and at least one outlet opening for letting the fluid out of the housing interior. The filter housing has a contact surface which is arranged in the interior of the housing and runs around a through-opening of the filter housing. The filter device also has a filter element arranged between the inlet opening and the outlet opening and designed for filtering the fluid, which is in circumferential contact with the contact surface, so that the fluid conveyed from the inlet opening to the outlet opening flows through the filter element. The filter device is characterized in that the filter device has at least one of the plastic components described above.

The filter device according to the invention has increased stability since the filter element is reliably connected to the filter housing and a connection strength between the filter element and the contact surface, more precisely between the filter element and the elevation of the contact surface, is increased. Furthermore, the filter device according to the invention has the advantage that the filter element is not damaged or less damaged after connection to the contact surface of the filter housing, more specifically with the elevation of the contact surface, so that the filter device according to the invention has increased long-term stability.

The elevation of the contact surface is preferably formed in one piece with the latter, so that the elevation is integrally connected to the contact surface. More preferably, the elevation is an integral part of the contact surface. More preferably, the contact surface is an integral part of the filter housing.

Since the contact surface runs around the through-opening of the filter housing, the elevation also runs around the through-opening of the filter housing.

The elevation of the contact surface can also be referred to as an elevation rib or as a connecting rib or as a connecting elevation or simply as a rib. In particular, the survey can be referred to as an energy director.

The first side surface of the elevation can also be referred to as the first flank or flank surface of the elevation and the second side surface of the elevation can also be referred to as the second flank or flank surface of the elevation.

The feature according to which the first side surface and the second side surface enclose an included angle of at least 90° with one another is to be understood in such a way that in the cross section through the elevation the first side surface and the second side surface enclose an included angle of at least 90° with one another. In this case, the cross section through the elevation runs transversely and preferably perpendicularly to a longitudinal extent of the elevation.

The feature according to which the included angle is at least 90° is to be understood in such a way that a first tangent applied to the first side surface always encloses an angle which is equal to or greater than 90° with a second tangent applied to the second side surface.

The included angle is preferably between 90° and 175°. More preferably, the included angle is between 90° and 150°. More preferably, the included angle is between 100° and 140°. More preferably, the included angle is between 110° and 130°.

The fluid is preferably oil. Furthermore, it is of course also possible for the fluid to be filtered to be, for example, water or a gas, in particular breathing air. There are therefore no restrictions according to the invention.

The filter device is preferably designed such that the plastic component is part of the filter housing, the contact surface of the plastic component forming the contact surface of the filter housing, and the at least one circumferential elevation being connected to the filter element.

The correspondingly designed filter device has an even higher stability. This is because the surface area of the first side surface, to which the filter element is connected, is greater than the surface area of the second surface, to which the filter element is also connected. The connection between the filter element and the elevation is therefore particularly stable in the area in which the connection between the filter element and the elevation is exposed to the greatest forces when the fluid to be filtered flows through the filter element.

The feature according to which the first side surface of the elevation points in the direction of the housing interior means that a surface normal of the first side surface has an extension component in the direction of the housing interior.

A surface normal is perpendicular to its associated surface. Thus, a surface normal of the contact surface is perpendicular to the contact surface. A surface normal of a side surface is perpendicular to the side surface.

Since the first angle is smaller than the second angle, the elevation is asymmetrical.

The first angle is preferably between 91° and 179°. More preferably, the first angle is between 100° and 150°. More preferably, the first angle is between 105° and 135°. More preferably, the first angle is between 115° and 125°. More preferably, the first angle is 120°.

The second angle is preferably between 91° and 179°. More preferably, the second angle is between 110° and 170°. More preferably, the second angle is between 135° and 165°. More preferably, the second angle is between 145° and 155°. More preferably, the second angle is 150°.

The first angle and the second angle are each selected in such a way that the included angle between the first side surface and the second side surface is always at least 90°.

The filter device is preferably designed in such a way that the filter housing has a plastic component with the features of claim 3 points, the first side surface of the second elevation pointing in the direction of the housing interior and the second side surface of the second elevation pointing away from the housing interior, the first side surface of the second elevation enclosing a first angle with a surface normal of the contact surface, and the second side surface of the second Collection with a surface normal of the contact surface includes a second angle, the first angle is smaller than the second angle.

The correspondingly designed filter device has an even higher stability. This is because the surface area of the first side face of the second elevation, to which the filter element is connected, is greater than the surface area of the second face of the second elevation, to which the filter element is also connected. The connection between the filter element and the second elevation is therefore particularly stable in the area in which the connection between the filter element and the second elevation is exposed to the greatest forces when the fluid to be filtered flows through the filter element.

The feature according to which the first side surface of the second elevation points in the direction of the housing interior means that a surface normal of the first side surface has an extension component in the direction of the housing interior.

Since the first angle is smaller than the second angle, the second elevation is asymmetrical.

The filter device is preferably designed in such a way that the filter housing has a first housing part and a second housing part connected to the first housing part, with the contact surface being formed in the first housing part.

In the correspondingly designed filter device, it is particularly easy to connect the filter element to the filter housing, because the filter element can be connected to the first housing part, for example by means of ultrasonic welding, when the filter housing is open (i.e. before the first housing part is connected to the second housing part).

The first housing part is preferably designed as a housing lower shell and the second housing part is preferably designed as a housing upper shell. More preferably, the first housing part is designed as an upper housing shell and the second housing part is designed as a lower housing shell.

The filter device is preferably designed such that the second housing part has a contact surface and that the filter element is arranged between the first housing part and the second housing part such that the filter element is in contact with the contact surface of the second housing part.

A corresponding configuration of the filter device further improves its stability, since the contact surface of the second housing part counteracts the detachment of the filter element from the contact surface, more precisely from the elevation or elevations.

The filter element is preferably clamped between the first housing part and the second housing part, so that the second housing part exerts a force on the filter element directed in the direction of the first housing part.

The filter device is preferably designed in such a way that the filter device has the filter element designed as the first filter element, a second filter element and a spacer element arranged between the first filter element and the second filter element, with the plastic component, as described above, being designed as the spacer element, the one first contact surface, which is connected to the first filter element, and has a second contact surface, which is connected to the second filter element, wherein the first contact surface and/or the second contact surface has or have at least one circumferential elevation.

In the correspondingly designed filter device, its filtration properties can be adapted to a wide variety of purposes by providing the first filter element and the second filter element.

The first filter element and the second filter element are preferably of identical design with regard to the selection of their filter materials.

More preferably, the first filter element is designed as a coarse filter medium and the second filter element as a fine filter medium.

More preferably, the first filter element is designed as a fine filter medium and the second filter element as a coarse filter medium.

More preferably, the filter device is designed in such a way that the first filter element is designed as a coarse filter element and the second filter element is designed as a fine filter element, with the coarse filter element being opposite the inlet opening and the fine filter element is arranged opposite the outlet opening.

More preferably, the filter device is designed such that the first filter element is designed as a fine filter element and the second filter element as a coarse filter element, the fine filter element being arranged opposite the inlet opening and the coarse filter element being arranged opposite the outlet opening.

More preferably, the filter device is designed in such a way that the second filter element is designed as a filter pocket.

More preferably, the filter device is designed in such a way that the filter device is designed as a filter device for filtering liquid media, in particular for filtering oil.

The filter element preferably has cellulose. More preferably, the filter element has glass fibers and mixtures thereof. More preferably, the filter element comprises synthetic materials or mixtures thereof. More preferably, the filter element comprises glass fibers and mixtures of glass fibers and synthetic materials. More preferably, the filter element has fabric made of metal. This makes it clear that there are no restrictions with regard to the selection of the filter material for the filter element, as long as the filter element is suitable and designed for the filtration of fluids.

More preferably, the filter device is designed in such a way that the filter device is designed as a suction filter device.

More preferably, the filter device is designed in such a way that the filter device is designed as a pressure filter device.

More preferably, the filter device is designed in such a way that the contact surface and the elevation or elevations are integral components of an oil pan for engines or transmissions.

• 1: eine schematische Querschnittsdarstellung eines als Gehäuseunterschale ausgebildeten ersten Gehäuseteils einer erfindungsgemäßen Filtervorrichtung gemäß einer ersten Ausführungsform der vorliegenden Erfindung während eines Verbindungsvorganges eines Filterelements mit dem ersten Gehäuseteil der Filtervorrichtung;
• 2: eine der 1 entsprechende Querschnittsdarstellung, wobei das erste Gehäuseteil Teil einer Filtervorrichtung gemäß einer zweiten Ausführungsform der vorliegenden Erfindung ist;
• 3: eine der 1 entsprechende Querschnittsdarstellung, wobei das erste Gehäuseteil Teil einer Filtervorrichtung gemäß einer dritten Ausführungsform der vorliegenden Erfindung ist;
• 4: eine schematische Querschnittsdarstellung einer erfindungsgemäßen Filtervorrichtung im montierten Zustand;
• 5a: eine schematische Querschnittsdarstellung einer Filtervorrichtung gemäß einer weiteren Ausführungsform der vorliegenden Erfindung; und
• 5b: eine Detailansicht des in 5a markierten Bereichs der Filtervorrichtung.

Further advantages, details and features of the invention result from the exemplary embodiments explained below. Show in detail:

• 1 1: a schematic cross-sectional view of a first housing part, designed as a lower housing shell, of a filter device according to a first embodiment of the present invention during a process of connecting a filter element to the first housing part of the filter device;
• 2 : one of the 1 corresponding cross-sectional view, wherein the first housing part is part of a filter device according to a second embodiment of the present invention;
• 3 : one of the 1 corresponding cross-sectional representation, wherein the first housing part is part of a filter device according to a third embodiment of the present invention;
• 4 1: a schematic cross-sectional representation of a filter device according to the invention in the assembled state;
• 5a 1: a schematic cross-sectional illustration of a filter device according to a further embodiment of the present invention; and
• 5b : a detailed view of the in 5a marked area of the filter device.

In the description that now follows, the same reference symbols denote the same components or the same features, so that a description of a component that was carried out in relation to one figure also applies to the other figures, so that a repeated description is avoided. Furthermore, individual features that have been described in connection with one embodiment can also be used separately in other embodiments.

4 shows a schematic cross-sectional view of a filter device 1 according to the present invention. In the exemplary embodiments illustrated in all of the figures, the filter device 1 is designed as a filter device 1 for filtering an oil. Therefore, oil represents the fluid to be filtered in the exemplary embodiments shown. It can be seen that the filter housing 101 has a plastic component 110 designed as a first housing part 110 and a second housing part 150 connected to the first housing part 110 . In the exemplary embodiment shown, the first housing part 110 is designed as a lower shell 110 of the housing 100 . The second housing part 150 is designed as an upper shell 150 of the filter housing 100 . In this case, the inlet opening 111 is formed in the lower shell 110 and the outlet opening 151 is formed in the upper shell 150 .

The filter housing 100 has an abutment surface 120 arranged in the housing interior 101 and surrounding a through-opening 104 of the filter housing 100 is formed circumferentially. Consequently, the through-opening 104 is delimited by the contact surface 120 . It can be seen that the contact surface 120 is formed in the lower shell 110 of the filter housing 100 .

The filter device 1 also has a filter element 160 which is arranged between the inlet opening 111 and the outlet opening 151 and is designed for filtering the fluid, which is connected circumferentially to the contact surface 120, so that the fluid conveyed from the inlet opening 111 to the outlet opening 151 is forced to pass through the filter element 160 must flow through.

Out of 4 It can also be seen that the upper shell 150 has a contact surface 152, the filter element 160 being arranged between the lower shell 110 and the upper shell 150 in such a way that the filter element 160 is in contact with the contact surface 152 of the upper shell 150. The filter element 160 is consequently arranged in a sandwich-like manner between the contact surface 120 and the contact surface 152 .

Furthermore is off 4 seen that in the representation according to 4 A collection space 105 is formed to the left and right of the filter element 160 between the lower shell 110 and the upper shell 150, in which a melt flash that can occur when the filter element 160 is connected to the filter housing 100 can be received.

In the 4 The filter device 100 shown can be configured as a suction filter device 100 . When the filter device 1 is used accordingly, a negative pressure is generated at the outlet opening 151 so that the fluid to be filtered is then sucked into the housing interior 101 via the inlet opening 111 .

On the other hand, it is also possible for the filter device 1 to be in the form of a pressure filter device 1 . When the filter device 1 is used accordingly, the fluid to be filtered is conveyed by means of a pump from the inlet opening 111 with overpressure into the housing interior 101 .

Out of 4 it can be seen that the filter element 160 separates a dirty side 102 of the housing interior 101 from a clean side 103 of the housing interior 101 . By passing the fluid through the filter element 160 , the fluid is filtered by the filter element 160 .

Out of 4 it can also be seen that the contact surface 120 has a peripheral elevation 121 which is connected to the filter element 160 . The connection of the filter element 160 to the elevation 121 is achieved by means of ultrasonic welding. The elevation 121, which can also be referred to as the first elevation 121, is used when the filter element is welded or connected to the lower shell 110 as an energy director 121. The exact design of the elevation 120 is described below with reference to FIG 1 until 3 explained in more detail.

1 shows a schematic cross-sectional view of a plastic component 110, 170, which can be designed as a lower housing shell 110 or as a spacer element 170, wherein the spacer with respect to the 5a and 5b is described in more detail below. The plastic component 110, 170 is part of a filter device 1 according to the invention and is shown during a process of connecting a filter element 160 to the first housing part 110, 170 of the filter device 1. It can be seen that the elevation 121 has a first side surface 121_1 and a second side surface 121_2. The first side surface 121_1 and the second side surface 121_2 enclose an included angle 124 with one another, which is greater than 90° in the illustrated exemplary embodiment. Consequently, included angle 124 is obtuse.

From the 1 until 3 it can be seen that in survey 121 and incidentally also in one below with reference to 3 second elevation 122, to be explained in more detail, in a cross section through the respective elevation 121, 122, the respective first side surfaces 121_1, 122_2 and the respective second side surfaces 121_1, 122_2 enclose an included angle of at least 90°. The cross section through the respective elevations 121, 122 runs transversely and preferably perpendicularly to a respective longitudinal extension of the respective elevations 121, 122.

From the 1 until 3 it can also be seen that the first side surface 121_1 of the elevation 121 points in the direction of the housing interior 101 and the second side surface 121_2 of the elevation 121 points away from the housing interior 101 when the plastic component 110 is designed as a lower housing shell 110 . The arrow labeled R1 above the elevation 121 represents the direction toward the housing interior 101 , whereas the arrow labeled R2 above the elevation 121 represents the direction away from the housing interior 101 . The first side surface 121 1 of the elevation 121 encloses a first angle 131 with a surface normal 126 of the contact surface 120 , and the second side surface 121_2 of the elevation 121 encloses a second angle 132 with the surface normal 126 of the contact surface 120 . The figures show that the first angle 131 is smaller than the second angle 132 .

At the in the 1 until 3 In the exemplary embodiments illustrated, the first angle 131 is 120° and the second angle 132 is 150°. However, the present invention is not limited to the respective angles. The first angle can be between 105° and 135°. Preferably, the first angle 131 is between 115° and 125°. More preferably, the first angle 131 is 120°. The second angle 132 is preferably between 135° and 165°. More preferably, the second angle 132 is between 145° and 155°. More preferably, the second angle 132 is 150°.

From the 1 until 3 it can also be seen that the elevation 121 has a rounding 123, by means of which the first side surface 1211 is connected to the second side surface 121_2. Consequently, the first side surface 121_1 merges continuously into the second side surface 121_2.

Out of 1 it can be seen that a height extension 125 of the elevation 121 corresponds to a thickness extension 161 of the filter element 160 .

To connect the filter element 160 to the contact surface 120 and to the elevation 121, the filter element 160 is arranged between the contact surface 120, 181, 182 and a sonotrode 200. The sonotrode 200 applies force to the filter element 160 in the direction of the contact surface 120, 181, 182 and the elevation 121. The sonotrode 200 generates high-frequency vibrations whose direction of action 201 is in the 1 until 3 is shown. The filter element 160 is thus connected to the contact surface 120, 181, 182, more precisely to the elevation 121 of the contact surface 120, 181, 182, by ultrasonic welding. This is because the elevation 121 consists of a thermoplastic which is plasticized by the introduction of energy via the sonotrode 200 .

2 shows an alternative embodiment of the contact surface 120, 181, 182. In the in 2 The contact surface 120, 181, 182 shown has an elevation 121, which in turn has a base 140, which extends perpendicularly from the contact surface 120 and is arranged between the contact surface 120, 181, 182 and the first and second side surfaces 121_1, 121_2. A height extension 141 of the base 140 essentially corresponds to a height extension 125 of the first and second side surfaces 121_1, 121_2. However, the present invention is not limited to a corresponding embodiment. The height extension 141 of the base 140 can differ from the height extension of the side surfaces 121_1, 121_2. In addition, it is also possible that a through the in 2 the contact surface 120, 181, 182 arranged to the right of the base 140 is arranged on a different plane than the contact surface 120, 181, 182 which is arranged to the left of the base 140. In this respect, there are no restrictions according to the invention with regard to the design of elevation 121 and base 140.

The rest of the structure of the 2 The filter device 1 shown is identical to the structure in 1 shown filter device 1, so that reference is made to the above description.

3 shows a further alternative embodiment of the filter device 1. The first housing part 110 is designed as a lower shell 110 and has two elevations, namely a first elevation 121 and a second elevation 122. Furthermore, it is of course also possible that the first housing part 170 as a further spacer element 170 to be explained below is formed. Both the first elevation 121 and the second elevation 122 are circumferential, ie both the first elevation 121 and the second elevation 122 are arranged circumferentially around the through-opening 104 . The second elevation 122 is designed to run around the first elevation 121, so that the first elevation 121 is surrounded by the second elevation 122 in a plan view of the contact surface 120, 181, 182. The second elevation 122 also has a first side surface 122 1 and a second side surface 122_2, the first side surface 122 1 and the second side surface 122 2 of the second elevation 122 enclosing an included angle 124 of at least 90° with one another.

With regard to the possible variations of the included angle 124 of the second elevation 124, the same variation options exist as for the first side surface 121, so that reference is made to the above description.

In the case of the first housing part 110 embodied as a lower shell 110 , the first side surface 122 1 of the second elevation 122 points in the direction of the housing interior 101 and the second side surface 122_2 of the second elevation 122 points away from the housing interior 101 . First side surface 122_1 of second elevation 122 encloses a first angle 131 with surface normal 126 of contact surface 120, and second side surface 122_2 of second elevation 122 encloses a second angle 132 with surface normal 126 of contact surface 120. The first angle 131 is smaller than the second angle 132. With regard to the possible variations of both the first angle 131 and the second angle 132 of the second elevation 122, the same possible variations exist as with the first elevation 121, so that reference is made to the corresponding description above.

Exactly as in the case of the first elevation 121, the second elevation 122 also has a rounding 123, by means of which the first side face 122_1 of the second elevation 122 is connected to the second side face 122_2 of the second elevation of a 22.

5a shows a schematic cross-sectional illustration of a filter device 1 according to a further embodiment of the present invention, and 5b shows a detailed view of the in 5a marked area of the filter device 1.

The filter device 1 has a first filter element 160 and a second filter element 165 . The filter device 1 also has a plastic component 170 which is designed as a spacer element 170 and is arranged between the first filter element 160 and the second filter element 165 . The spacer element 170 has a first bearing surface 181 which is connected to the first filter element 160 and a second bearing surface 182 which is connected to the second filter element 160 . The first contact surface 181 and the second contact surface 182 each have at least one peripheral elevation 121, 122.

In the exemplary embodiment shown, the second filter element 165 is designed as a filter pocket 165 . However, the second filter element 165 can of course also be embodied as a simple flat second filter element 165 which does not have a filter pocket.

With regard to the further design possibilities of the spacer 170 and its contact surfaces 181, 182, reference is made to with reference to FIG 1 until 3 statements made.

Reference List

1

filter device

100

filter housing

101

housing interior

102

Dirty side (of the housing interior)

103

Clean side (of the housing interior)

104

through hole (of the filter housing)

105

collection space (of the filter housing)

110

first housing part / lower shell / lower housing shell / plastic component

111

intake port

120

Contact surface / contact flange (of the first housing part)

121

(first) elevation / (first) energy director

121_1

first face (of the first elevation)

121 2

second side surface (of the first elevation)

122

(second) elevation / (second) energy director

122 1

first face (of the second elevation)

122_2

second face (of the second elevation)

123

rounding (of elevation)

124

Included angle (between first face and second face)

125

elevation (of elevation)

126

surface normal (of the contact surface)

131

first angle

132

second angle

140

pedestal (of elevation)

141

Elevation of the base

150

second housing part / upper shell / housing upper shell

151

exhaust port

152

contact surface (of the second housing part)

160

(first) filter element / filter medium

161

thickness extension (of the filter element)

165

second filter element / filter medium

170

Spacer element / plastic component

181, 182

Contact surface (of the spacer element)200 sonotrode

201

Direction of action (of the sonotrode)

Claims (20)

Plastic component (110, 170) for connection to a filter element (160), the plastic component (110, 170) having at least one contact surface (120, 181, 182) which runs around a through opening (104) of the plastic component (110, 170) and which can be brought into contact with the filter element (160), the plastic component (110, 170) being characterized by the following features is: - the at least one contact surface (120, 181, 182) has at least one peripheral elevation (121, 122) which can be connected to the filter element (160); - The elevation (121, 122) has a first side surface (121_1, 122_1) and a second side surface (121_2, 122_2); - the first side surface (121_1, 122_1) and the second side surface (121 2, 122_2) enclose an included angle (124) of at least 90° with one another, - the first side surface (121_1, 122_1) of the elevation (121, 122) has Direction of the through-opening (104) and the second side surface (121_2, 122_2) of the elevation (121, 122) points away from the through-opening (104); - The first side surface (121_1, 122_1) of the elevation (121, 122) encloses a first angle (131) with a surface normal (126) of the contact surface (120); - The second side surface (121_2, 122_2) of the elevation (121, 122) encloses a second angle (132) with the surface normal (126) of the contact surface (120); and - the first angle (131) is smaller than the second angle (132). Plastic component (110, 170) after claim 1 , characterized in that the elevation (121, 122) has a curve (123) by means of which the first side surface (121_1, 122_1) is connected to the second side surface (121_2, 122_2). Plastic component (110, 170) according to one of the preceding claims, characterized by the following features: - the contact surface (120) has at least two peripheral elevations (121, 122) which are connected to the filter element (160); - A second elevation (122) is formed around the first elevation (121) circumferentially; - The second elevation (122) has a first side surface (122_1) and a second side surface (122_2); and - the first side surface (122_1) and the second side surface (122_2) of the second elevation (122) enclose an included angle (124) of at least 90° with one another. Plastic component (110, 170) after claim 3 , characterized in that the second elevation (122) has a curve (123) by means of which the first side surface (122_1) of the second elevation (122) are connected to the second side surface (122_2) of the second elevation (122). Plastic component (110, 170) according to one of the preceding claims, characterized in that the elevation (121, 122) or elevations (121, 122) has or have a base (140) which extends perpendicularly from the contact surface (120). and is or are arranged between the contact surface (120, 181, 182) and the first and second side surfaces (121_1, 121_2; 122_1, 122_1). Plastic component (110, 170) according to one of the preceding claims, characterized in that the elevation (121, 122) or the elevations (121, 122) is or are formed from a thermoplastic material. Plastic component (110, 170) according to one of the preceding claims, characterized in that a height extension (125) of the elevation (121, 122) or elevations (121, 122) corresponds to a thickness extension (161) of the filter element (160). Plastic component (110, 170) according to one of the preceding claims, characterized in that the filter element (160) is or are connected to the elevation (121, 122) or to the elevations (121, 122) by means of ultrasonic welding. Filter device (1) with the following features: - the filter device (1) has a filter housing (100) with at least one inlet opening (111) for admitting a fluid into a housing interior (101) and at least one outlet opening (151) for letting out the fluid the housing interior (101); - The filter housing (100) has an abutment surface (120) arranged in the housing interior (101) and running around a through-opening (104) of the filter housing (100); - The filter device (1) has a filter element (160) which is arranged between the inlet opening (111) and the outlet opening (151) and is designed for filtration of the fluid, which is in circumferential contact with the contact surface (120), so that the The fluid conveyed from the inlet opening (111) to the outlet opening (151) flows through the filter element (160), the filter device (1) being characterized in that the filter device (1) has at least one plastic component (110, 170) according to one of the Claims 1 until 8th having. Filter device (1) after claim 9 , characterized by the following features: - the plastic component (110) is part of the filter housing (100); - The contact surface (120, 181, 282) of the plastic component (110, 170) forms the contact surface (120) of the filter housing (100); and - the at least one peripheral elevation (121, 122) is connected to the filter element (160). Filter device (1) after claim 10 , characterized by the following features: - the filter housing (100) has a plastic component (110, 170) with the features of claim 3 on; - The first side surface (122_1) of the second elevation (122) points in the direction of the housing interior (101) and the second side surface (122_2) of the second elevation (122) points away from the housing interior (101); - The first side surface (122_1) of the second elevation (122) encloses a first angle (131) with a surface normal (126) of the contact surface (120); - The second side surface (122_2) of the second elevation (122) encloses a second angle (132) with a surface normal (126) of the contact surface (120); and - the first angle (131) is smaller than the second angle (132). Filter device (1) according to one of Claims 10 until 11 characterized by the following features: - the filter housing (100) has a first housing part (110) and a second housing part (150) connected to the first housing part (110); and - the contact surface (120) is formed in the first housing part (110). Filter device (1) after claim 12 , characterized by the following features: - the second housing part (150) has a contact surface (152); and - the filter element (160) is arranged between the first housing part (110) and the second housing part (150) in such a way that the filter element (160) is in contact with the contact surface (152) of the second housing part (150). Filter device (1) after claim 9 characterized by the following features: - the filter device (1) has the filter element (160) designed as the first filter element (160) and a second filter element (165); - The filter device (1) has a spacer element (170) which is arranged between the first filter element (160) and the second filter element (165); - The plastic component (170) according to claims 1 until 8th is formed as the spacer (170); - The spacer element (170) has a first contact surface (181) which is connected to the first filter element (160) and a second contact surface (182) which is connected to the second filter element (160); - The first contact surface (181) and/or the second contact surface (182) has at least one peripheral elevation (121, 122). Filter device (1) after Claim 14 , characterized by the following features: - the first filter element (160) is designed as a coarse filter element (160) and the second filter element (165) is designed as a fine filter element (165); - the coarse filter element (160) is arranged opposite the inlet opening (111); and - the fine filter element (165) is arranged opposite the outlet opening (151). Filter device (1) after Claim 14 or 15 , characterized in that the second filter element (165) is designed as a filter bag (165). Filter device (1) according to one of claims 9 until 16 , characterized in that the filter device (1) is designed as a filter device (1) for filtering liquid media, in particular for filtering oil. Filter device (1) according to one of claims 9 until 17 , characterized in that the filter device (1) is designed as a suction filter device (1). Filter device (1) according to one of claims 9 until 17 , characterized in that the filter device (1) is designed as a pressure filter device (1). Filter device (1) according to one of claims 9 until 19 , characterized in that the contact surface (120) and the elevation (121, 122) or the elevations (121, 122) are integral components of an oil pan for engines or transmissions.

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