DE202018105005U1 - housing integration - Google Patents

Abstract

Flat seal (10) for sealing a around an interior (7) of a housing (1, 2, 3) circumferential gap (6) in the housing with
a flat layer (11) which largely surrounds an opening (8) and has an inner edge (13a) pointing to the opening and an outer edge (13b) pointing away from the opening, characterized in that the flat gasket (10) comprises a plurality of coupling pins (13) 30) for mechanically coupling the flat gasket (10) to a carrier (2, 3), the longitudinal axis of which extends substantially perpendicular to a main extension plane of the flat gasket (10).

Description

The present invention relates to a flat gasket for sealing between two components. In particular, the present invention relates to a frame seal which seals between a base and a top, such as a battery box trough and a battery box lid.

Conventionally, between a lower part and an upper part of a battery box, the gap in the battery box is sealed by sealing the upper part with the lower part of the box in the gap. However, this has the disadvantage that the battery box is difficult to disassemble again and then re-mount tight. Alternatively, seals are therefore inserted circumferentially on the edge of the lower part seals in the gap before the lid is releasably secured, for example, is screwed. For this purpose, for example circumferential elastomer seals are used. The disadvantage of this is that due to the elastic properties of the entire seal the mounting safety is low.

On the other hand, such battery boxes often have large dimensions, so that the upper part, for example a lid, closed lower part, for example a battery box tray, has lengths and widths that are more than one meter. Battery boxes, in particular for traction batteries in vehicle construction, are typically provided with dimensions of more than 1.30 m in length and more than 0.8 m in width.

Pure elastomer seals thus have the disadvantage that they can be incorrectly inserted during assembly or slip, so that the mounting safety is low. On the other hand, conventional one-piece girder seals with a continuous metal or plastic carrier to which a rubber seal lip is molded are difficult to manufacture in the required dimension. For the production of the carrier, it requires very large tools. Also the committee of material is very big.

Based on this prior art, it is therefore an object of the present invention to provide a flat gasket, which has the advantages of a carrier frame seal, but can be packed with little effort and small footprint and can be transported safely and additionally has other advantages, such as low Assembly effort and tolerance compensation for mounting a shell on a lower part of a housing.

This object is achieved by the subject matter of the independent claims. Advantageous developments emerge from the dependent claims, the description and the figures.

The present invention thus provides a flat gasket for sealing a gap in a housing. Such a gap may for example be the circumferential gap between a box and a lid, for example in a battery box. In this gap, for example, between the tub and the lid of a housing, d. H. circumferentially along the gap between them, a seal according to the present invention is now arranged. This seal thus has an opening which largely corresponds to the dimensions of the interior of the housing in the plane of the seal and which is largely or completely surrounded by the seal. The term "largely" can thus be understood as at least partially, that is to say as partial, preferably for the most part and particularly preferably completely. The opening may also be referred to as a breakthrough and / or recess. It has like conventional carrier frame seals on a flat position as a carrier layer. This flat layer can advantageously consist of a plastic or even better of a metal or have this / this. The flat position ensures the correct positioning of the flat gasket during assembly and thus the mounting safety. Advantageously, the flat layer further has through openings for fastening means or directly formed mounting elements for this purpose. If the flat layer is designed as a plastic carrier, then this may, for example, also be reinforced with metal or have metallic sleeves in the passage openings. Flat is not necessarily synonymous with just equate. However, the flat gasket advantageously has a substantially smaller thickness than the extension surface.

The flat gasket has one or more coupling pins for mechanically coupling the flat gasket to a support which does not belong to the flat gasket and whose longitudinal and thus main extension axis runs essentially perpendicular to one, that is to say the only main extension plane of the gasket or gasket. Substantially perpendicular here may mean perpendicular to a predetermined maximum deviation, wherein the deviation may be, for example, +/- 15 °, +/- 10 ° or +/- 5 °, preferably +/- 2 °. The carrier not belonging to the flat gasket is thus an object other than the carrier layer of the flat gasket.

This has the advantage that the flat gasket can be coupled via the coupling pins with the provided carrier, so that the relative position of the flat gasket to the carrier can be easily specified and maintained correctly. This prevents, for example, slipping of the seal or detachment of the seal from the carrier during assembly. By reliably holding the flat gasket to the support can also be a longer period between the mounting of the gasket on the support and the mounting of the support, in which the gasket is mounted, lie. For example, at a first production location, the carrier, for example a housing cover, can be produced, which is then conveyed to a second production location, the production location of the flat gasket. There, the flat gasket can be mounted. Since the coupling pins reliably hold the flat gasket to the carrier, in this case the housing cover, this carrier or housing cover with the mounted flat gasket can then be transported to a third production location. Since the carrier or housing cover protects the flat gasket during transport, it is thus possible to safely transport particularly bulky and / or long, sensitive flat gaskets. At the third production site, the carrier with the flat gasket can then be mounted, for example on a housing body.

In an advantageous embodiment, it is provided that the coupling pins are arranged such that they are arranged outside a sealing line during normal use, the compression of the gasket between two other parts, in particular housing parts such as housing body and housing cover. The sealing line can run in particular in a sealing surface. The sealing surface may be the surface of the flat gasket which is in contact with the part or parts when the flat gasket is used as intended, preferably with circumferential line contact. The flat gasket seals an opening in particular from the environment when at least one continuous sealing line runs around the opening, for example an annular sealing line around a hole or another closed line around another opening in the flat gasket and at least one of the associated housing parts.

This has the advantage that the sealing effect is not impaired by the coupling pins, since the sealing surface or sealing line is not interrupted by the coupling pins. Moreover, damage to the sealing surface or sealing line is prevented by forces occurring during assembly of the coupling pins.

In a further advantageous embodiment, it is provided that at least one flat side of the flat gasket, so one or both of the flat sides of the gasket, at least partially, for example in one area or a plurality of separate regions, a sealing means, in particular a sealing coating, is attached. As a flat side, a respective side of the flat gasket may be referred to, which runs substantially parallel to the main extension plane of the flat gasket.

This has the advantage of an improved sealing effect of the flat gasket.

In another advantageous embodiment, it is provided that the coupling pins have a respective latching element, in particular an end region, which is thickened or widened in comparison to an intermediate region of the coupling pin nearer the remaining flat gasket and thus forms the latching element. The diameter perpendicular to the longitudinal axis is greater in the flat portion of the end portion of the coupling pin than in a between this end portion and the flat layer and / or the first elastomeric seal and / or the second elastomeric seal disposed intermediate portion of the coupling pin. The resulting shape of the coupling pin can also be called mushroom-like.

This has the advantage that the coupling pins ensure a reliable coupling between flat gasket and carrier despite a low production cost with simple installation.

In a particularly advantageous embodiment it is provided that one or more coupling pins are arranged on the flat layer. In particular, the coupling pins extend in the direction of their longitudinal axis through the flat layer.

This has the advantage that the flat gasket is held particularly stable and reliable on the carrier. The coupling pins extending through the flat position are particularly robust.

In a further advantageous embodiment, in each case an elastomeric seal are arranged on the inner edge and / or on the outer edge of the flat circumferential position surrounding the opening. Both elastomeric seals are materially connected at least in sections with the flat layer and are held in position by the flat layer as a carrier layer. In this case, one or more coupling pins are arranged on the first elastomeric seal and / or the second elastomeric seal. In particular, the respective coupling pins are formed integrally with the respectively associated elastomeric seal.

Overall, results from the flat position together with the first elastomeric seal and the second elastomeric seal, a flat gasket for sealing the gap, for example, the circumferential gap between a trough and a lid of a housing. The arrangement of the coupling pins on the elastomer seals, especially in the relevant embodiment with these, is particularly advantageous in terms of manufacturing technology.

In a further advantageous embodiment, it is provided that the flat layer has an elastomer layer which connects the two elastomer seals, and which is in particular designed in one piece with the two elastomer seals.

This has the advantage of particularly simple production, wherein the coupling pins do not worsen the sealing function of the elastomer layer and or elastomeric seals.

In another advantageous embodiment, it is provided that one or more coupling pins, preferably most or all of the coupling pins, are made on the flat layer in one piece with the elastomeric seal and / or elastomer layer.

This has the advantage that the plurality, or most or all coupling pins hold the gasket particularly reliable and at the same time with little extra effort in the usual manufacturing process can be integrated.

In a further advantageous embodiment it is provided that one or more coupling pins, preferably most or all of the coupling pins, in a base region, which is adjacent to the first elastomeric seal or the second elastomeric seal or the flat layer or the elastomer layer, have a larger diameter than in a adjoining the base region intermediate region of the coupling pin, which is farther away from the remaining flat gasket than the base region. The intermediate region can thus lie between the base region and the end region described above.

This has the advantage that a tearing of the coupling pins is avoided and a guide of the flat gasket is improved in its main extension plane.

In another advantageous embodiment, it is provided that the coupling pins are arranged exclusively on one of the two flat sides of the flat gasket.

This has the advantage that the stated advantages are achieved, however, the handling of the gasket is improved alone and in the assembled state.

In a further advantageous embodiment, the flat layer may be divided into a plurality of layer parts, which are separated from each other and in the direction of rotation about the opening, d. H. along the extension direction of the gasket lie one behind the other. The flat layer is thus divided into at least two first layer parts and at least one second layer part, wherein at least two first layer parts are separated by at least one second layer part. Advantageously, the first and the second layer parts alternate with each other in the circumferential direction of the flat gasket. This means that in each case two adjacent first layer parts are separated from one another by a second layer part and, if appropriate, two adjacent second layer parts are also separated from each other by a respective first layer part. However, it is in principle possible to add a further layer part therebetween which does not have to be either a first or a second layer part.

In a first variant, the first layer parts are now bonded cohesively to both the first elastomeric seal and the second elastomeric seal. This makes it possible to manufacture the part seal, which consists of the two elastomeric seals and the first layer parts, separately from the second layer part (s) and then during assembly to apply this first part seal, for example, to the first component and subsequently between the first layer parts to arrange the separate second part (s) thereof. The second layer part (s) is / are thus arranged between the first elastomeric seal and the second elastomeric seal and between adjacent first layer parts. Overall, resulting from the first and second layer part (s) composite support layer required stability and mounting safety of the gasket. As a result of the elastomer seal surrounding the outside and the elastomer seal surrounding on the inside, there is also a seal against influences acting on both sides of the flat seal, for example moisture or a liquid. This not only prevents the passage of, for example, moisture through or along the flat gasket, but also the penetration of moisture in the gap sealed by the gasket of the housing.

By dividing the flat gasket, and in particular its carrier layers in the first and second layer parts, it is possible to produce the first part seal consisting of the first layer parts with molded first elastomeric seal and molded second elastomeric seal on simple and small production facilities. Because for injection molding the elastomeric seal to the first layer parts, the first layer parts can be arranged compact in any form. For the first elastomeric seal and the second elastomeric seal is then For example, provided a non-linear course during injection molding, so that the first part seal can be made in total in a compact form. For assembly, the first part seal produced in this way are unfolded and second layer parts are inserted between the corresponding layer parts.

Since the first part seal and the second layer parts can also be shipped folded, the package can be significantly smaller than would be required if a conventional full-frame carrier frame seal were shipped.

Although a disadvantage of the gasket is that the installation cost is higher, at the same time, however, the mounting safety is increased. On top of that, if between the first and second parts of the room, z. As a gap is left, a tolerance compensation for the length of the gasket possible.

In a second variant, which has the same advantages as the previously described variant, the first elastomeric seal is always materially connected to the first layer parts during production and the second elastomeric seal is always materially connected to a second layer part / second layer parts during manufacture. Thus, there are two partial seals, wherein the first part seal contains the / the first layer parts and the first elastomeric seal and the second part seal contains the / the second (n) layer part (s) and the second elastomeric seal. Both can be made compact as described above, since it is possible to inject the elastomeric seal to the respective layer parts, the elastomeric seal in non-carrier-bound areas curved or folded, for example, in bays to lay. Also for the transport of the respective partial seal results in a significant space savings and savings in packaging material. All advantages of the first variant described above also apply to this variant.

For mounting, the two part seals are then placed on the component to be sealed, for example, on the frame of a battery box. It is particularly advantageous if the two partial seals are initially mounted by means of the coupling pins on a flat battery box cover as a carrier, since this has a higher space requirement during transport than the partial seals, but the space requirement is significantly lower than that of the battery box. In both cases, for example, the first partial seal absorbs the seal inwards and the second partial seal seals the seal to the outside.

The cohesive connection of the layer parts with the elastomeric seals according to the present invention gasket can be done for example by injection of the elastomer to an edge of a layer part or by molding an edge of the layer part or by completely encapsulating the entire layer part.

The cohesive connection does not exclude that before the injection molding and / or encapsulation of the elastomeric seal further intermediate layers are applied to the layer part, such as a primer layer.

It is advantageous if in curved regions of the flat gasket, the curved bearing part is materially connected to the inner elastomeric seal.

It may thus be provided that the first elastomeric seal and / or the second elastomeric seal in each case connects two layer parts which are spaced apart from one another by at least one layer part which is not materially bonded to the same elastomeric seal.

It can also be provided that the first elastomeric seal together with the materially integrally connected by means of the first elastomer seal layer parts form a first part seal and the second elastomeric seal together with the materially connected by means of the second elastomeric seal layer parts a second part seal.

Furthermore, it can be provided that the first elastomeric seal and / or the second elastomeric seal in each case two cohesively connected to each other not directly adjacent to each other arranged layer parts.

It can also be provided that the first elastomeric seal and / or the second elastomeric seal connects two directly adjacent to each other arranged layer parts cohesively.

Alternatively or additionally, it can be provided that the cohesive connection of the first and / or the cohesive connection of the second elastomeric seal with the parts of the material to be bonded thereto by injection molding and / or encapsulation of the elastomeric seal on or around the first or second edge of one, more or all of the material parts to be bonded to this elastomeric seal materially or by partially or completely encapsulating the elastomeric seal around one, several or all of the material parts to be connected in a materially bonded manner with this elastomeric seal is or has taken place.

In each embodiment of the gasket, however, is not excluded that adjacent Elastomer seals and layer parts, which are not connected to one another in a material-locking manner, are positively connected during assembly. For the positive connection of elastomeric seals with adjacent layer parts, the elastomeric seals may have holding elements and / or receiving elements which correspond with corresponding receiving elements and / or holding elements in the layer part. For example, a layer part in the non-cohesively connected region embossments, such as balconies and the like or depressions, in the corresponding holding elements, such as bulges of the adjoining elastomeric seal, engage correspondingly. The holding elements and receiving elements can also be puzzle-like protrusions and depressions, ie recesses with undercut and webs with lateral broadening or the like. These also cause a positive connection in the layer plane of the layer parts of the layer parts with the adjacent elastomeric seal.

In any embodiment of the flat gasket, it is also not excluded that adjacent layer parts, e.g. for the transport or only during assembly, positively connected, in particular in the layer plane of the layer parts are connected. For the positive connection of adjacent layer parts, these holding elements and / or receiving elements may have, which correspond with corresponding receiving elements and / or holding elements in the adjacent layer part. For example, a layer part in the non-cohesively connected region embossments, such as balconies and the like or depressions have, correspondingly engage in the corresponding holding elements, such as protrusions, of the adjacent layer part. The holding elements and receiving elements can also puzzle-like projections and depressions, d. H. Recesses with undercut and projections with lateral extensions, for example, dovetail joints or the like. These also cause a positive connection in the layer plane of the layer parts of the layer parts together. The flat gasket can thus have first and second elastomeric seals and the flat layer, the first elastomeric seal and the second elastomeric seal can be assembled or assembled together, preferably at least in regions, preferably in regions or completely, around the opening.

If such a positive connection of adjacent layer parts is provided, then it is also possible to completely assemble the entire flat seal after production and to deliver it as an interconnected part to the customer. For this purpose, it is also possible to secure the corresponding parts additionally against loosening after the positive connection by, for example, the receiving elements and / or holding elements of the respective carrier layer deformed, for example caulked.

Columns may be provided between adjacent layer elements, so that the entire length of the flat gasket is variable to a small extent. This makes it possible to uniformly produce the flat gasket even when manufacturing variations for the components to be sealed and thus allow tolerance compensation by means of the flat gasket. The non-carrier bonded portions of the elastomeric seals may follow the differences in length of the gap.

The elastomer seals may have any cross-sections, but in particular a round profile, an I-profile or a rectangular profile, in particular a rounded rectangular profile. The profilings can also have further surface structures. Further cross sections are possible adapted to the respective application. Thus, different cross-sectional shapes can also be used at different points of an elastomeric seal. The first and second elastomeric seals may differ in terms of profile shape as well as in terms of their cross-section or volume, over the entire length or in sections, but they may also be identical or sections identical.

It can therefore be provided that at least one of the layer parts at that edge, where it is not materially connected to one of the elastomer seals, receiving elements and / or holding elements, e.g. Projections and / or recesses, for the other elastomeric seal.

It can also be provided that the first or second elastomeric seal on at least one of the edges, where it is adjacent to one of the ply parts but not materially connected to this ply part, receiving elements and / or holding elements, e.g. Projections and / or recesses, has for the adjacent bearing part.

Furthermore, it can be provided that at least two successive layer parts are not immediately adjacent to one another and that the first and / or the second elastomeric seal extends between these layer parts.

The carrier layer of the flat gasket consists for example of a plastic or resin, in particular of a thermoplastic. Suitable for this example, polyamide. Conventionally, the carrier layer consists of a metal, in particular a stainless steel, a spring steel, a non-resilient carbon steel or an aluminum alloy. Other metals are possible. The choice of material depends on the respective requirements of the application.

The coupling pins and / or the sealing means and / or the first elastomeric seal and / or the second elastomeric seal consist of at least one, that is one or more, of the following materials or contain at least one, that is one or more, of the following materials: FKM (fluororubber) , NBR (acrylonitrile-butadiene rubber), HNBR (hydrogenated acrylonitrile-butadiene rubber), EPDM (ethylene-propylene rubber), ACM (polyacrylate rubber), AEM (ethylene-acrylate rubber), silicone rubber such as VMQ, EVM (ethylene Vinyl acetate rubber) or a TPE (thermoplastic elastomer). In this case, the coupling pins, the sealing means, first and second elastomeric seal can be made of identical materials or of different materials. The use of different materials is particularly easy if the different parts are made separately. The materials mentioned are particularly advantageous for elastomer seals and coupling pins.

The carrier layer is particularly suitable for sealing the gap between two housing parts of a housing, in particular between a housing pan and a housing cover in the form of a so-called. Carrier frame seal. Particularly suitable is the flat gasket for sealing between a housing pan and a housing cover, which extend in the plane of the opening particularly spacious, such as between a battery box trough and a battery box cover, especially for traction batteries in vehicles. The opening of the flat gasket in this case has in particular a substantially round shape, a rectangular shape or a rectangular shape with rounded corners.

The flat gasket described in this document can be designed as a frame seal between two housing parts of a housing, in particular a housing tub and a housing cover, in particular a battery housing or a battery box. There, the advantages described are particularly relevant.

The flat gasket is characterized by the fact that it can be manufactured in several parts and then mounted. This has particular advantages in flat gaskets with long lengths (in a direction of extent extending around the tub), in particular in flat gaskets having a length ≥ 100 cm, preferably ≥ 180 cm, preferably ≥ 250 cm. In battery cases of traction batteries as mentioned above, the gasket may also extend over> 6 m.

The flat gasket in particular has advantages if the interior of the housing in the plane of the flat gasket or the opening circumscribed by the gasket is advantageously in one or both of two orthogonal dimensions, in particular in the longitudinal direction and / or in the transverse direction, over at least 60 cm extends at least 80 cm, advantageously at least 100 cm.

A further aspect of the invention relates to a housing part, in particular a housing cover, which has a sealing area intended for engagement with such a flat gasket and has holes in this sealing area which are intended or suitable for receiving coupling pins of the flat gasket. The holes may be or include blind holes in particular. The holes may preferably have a countersink and / or several different diameters in different hole sections. As a result, the coupling pins can be kept very reliable.

In the following, steps of a method for producing the flat gasket described above are described, in particular for the production of the part seals and their connection. This method is not the subject of the present utility model. However, the method may be the subject of another patent application, in particular an international patent application according to the PCT, a European patent application or a German patent application.

• - Anordnen mindestens zweier ersten Lagenteile in einer geeigneten Form;
• - Anspritzen einer in sich geschlossen umlaufenden ersten Elastomerdichtung an einer Außenkante, die sich in Umlaufrichtung auf einer ersten Seite der ersten Lagenteile befindet, so dass die ersten Lagenteile mittels der ersten Elastomerdichtung stoffschlüssig miteinander verbunden sind;
• - Anspritzen von einem oder mehreren Kopplungsstiften;
• - Anspritzen einer in sich geschlossen umlaufenden zweiten Elastomerdichtung an einer Außenkante, die sich in Umlaufrichtung auf einer zweiten, der ersten Seite gegenüberliegenden Seite der ersten Lagenteile befindet, so dass die ersten Lagenteile mittels der zweiten Elastomerdichtung stoffschlüssig miteinander verbunden sind;
• - Anordnen der ersten Lagenteile so, dass die ersten Elastomerdichtung und die zweite Elastomerdichtung dem gewünschten Verlauf entsprechen;
• - Einfügen der zweiten Lagenteile so, dass sie jeweils zwischen zwei ersten Lagenteilen und der ersten Elastomerdichtung und der zweiten Elastomerdichtung angeordnet werden und ggf.;
• - formschlüssiges Verbinden der beiden Teildichtungen miteinander.

Such a method for producing the above-described metallic plate can according to a first aspect, for. At least one or more of the following steps:

• - Arranging at least two first layer parts in a suitable form;
• - Injection of a self-contained circumferential first elastomeric seal on an outer edge which is located in the circumferential direction on a first side of the first layer parts, so that the first layer parts are integrally connected to each other by means of the first elastomeric seal;
• - Injection of one or more coupling pins;
• - Injection of a self-contained circumferential second elastomeric seal on an outer edge extending in the direction of rotation on a second, the first side opposite side of the first layer parts, so that the first layer parts are connected by means of the second elastomeric seal cohesively with each other;
• Arranging the first layer parts so that the first elastomeric seal and the second elastomeric seal correspond to the desired course;
• - Inserting the second layer parts so that they are each arranged between two first layer parts and the first elastomeric seal and the second elastomeric seal and, if necessary;
• - Form-fitting connection of the two part seals with each other.

• - Anordnen mindestens zweier ersten Lagenteile in einer geeigneten Form;
• - Anspritzen einer in sich geschlossen umlaufenden ersten Elastomerdichtung, so dass die ersten Lagenteile mittels der ersten Elastomerdichtung stoffschlüssig unter Ausbildung einer ersten umlaufenden Teildichtung miteinander verbunden sind;
• - Anspritzen von einem oder mehreren Kopplungsstiften;
• - Anordnen mindestens zweier zweiter Lagenteile in einer geeigneten Form;
• - Anspritzen einer in sich geschlossen umlaufenden zweiten Elastomerdichtung, so dass die zweiten Lagenteile mittels der zweiten Elastomerdichtung stoffschlüssig unter Ausbildung einer zweiten umlaufenden Teildichtung miteinander verbunden sind;
• - Anordnen der beiden Teildichtungen so, dass die ersten Lagenteile und die zweiten Lagenteile einander abwechselnd angeordnet sind und ggf.
• - formschlüssiges Verbinden der beiden Teildichtungen miteinander.

Such a method for producing the metallic plate described above may according to a second aspect, for. At least one or more of the following steps:

• - Arranging at least two first layer parts in a suitable form;
• - Injection of a self-contained circumferential first elastomeric seal, so that the first layer parts by means of the first elastomeric seal materially connected to form a first circumferential part seal;
• - Injection of one or more coupling pins;
• - Arranging at least two second layer parts in a suitable form;
• - Injection of a self-contained circumferential second elastomeric seal, so that the second layer parts by means of the second elastomeric seal materially connected to form a second circumferential part seal;
• Arranging the two part seals such that the first layer parts and the second layer parts are arranged alternately one behind the other and possibly
• - Form-fitting connection of the two part seals with each other.

An advantage of the method and the two part seals is that the elastomeric seals in the non-carrier-bonded areas can also be produced in a curved shape. This makes it possible to manufacture in manufacturing the first part seal and / or the second part seal on compact systems and to send both in folded form.

In the following some examples of gaskets are shown. Here, the same or similar reference numerals designate the same or similar elements, so that their mention is not repeated in part. It is essential that the present flat gasket can be developed in many ways. The following examples each show a combination of further advantageous features for a flat gasket. However, it is also possible to further develop the flat gasket only by individual features and properties of a single exemplary flat gasket variants or by means of a combination of features and properties of various of the following examples.

• 1 - 9 verschiedene Ausführungsformen erfindungsgemäßer Flachdichtungen

Show it

• 1 - 9 various embodiments of flat gaskets according to the invention

1 shows a battery case 1 with battery modules arranged therein 4a to 4e a vehicle traction battery with a lower part 2 and a lid 3 , The battery modules 4a to 4e are in the interior 7 of the battery box 2 accommodated. Above the battery modules 4a to 4e has this housing 1 between the lower part 2 in the form of a tub and the lid 3 a gap 6 on. Along the peripheral edge of the lid 3 Consequently, there is a gap to be sealed 6 between the tub 2 and the lid 3 in which a flat gasket according to the invention 10 is inserted. The flat gasket 10 thus seals the gap 6 from. For this purpose it runs in the circumferential direction along the outer edge of the lid 3 around the lid 3 and the tub 2 and closes an opening, namely the interior of the tub 2 , on.

Such battery case 1 typically have dimensions of over 1 m at least in the longitudinal or width direction, so that the flat gasket 10 typically in the direction of rotation may have a length of several meters.

2 now shows in the drawing files 2A to 2E each a detail of a battery box 1 with a tub 2 and a lid 3 in the neckline and cross-section around the contact point of the lid 3 on the tub 2 , The lid 3 has a parallel to the tub 2 extending flared flattened area, in an outer edge 5 ends. With this flattened area lies the lid 3 on a parallel thereto flattened portion of the tub 2 on. However, the edition is not direct, but is located between the tub 2 and the lid 3 a flat gasket according to the invention 10 , In this flat gasket 10 can, like out 3 follows, alternating first layer parts 15a and second layer parts 15b a metal carrier 11 in the circumferential direction, ie in 2A be arranged perpendicular to the plane of the drawing behind each other. In this case, first and second layer parts ( 15a . 15b ). The first layer parts 15a are in each case cohesively on one outer edge 13a with a first elastomeric seal 12a cohesively connected while the second layer parts 15b at the corresponding opposite outer edge 13b cohesively with a second elastomeric seal 12b by injection molding on the outer edge 13b of the second layer part 15b are connected as out 4 follows.

2A shows a cross section in the region of a second layer part 15b that is at its outside in the gap 6 circumferential outer edge 13b by injection molding materially with the largely in the gap 6 completely encircling elastomer seal 12b connected is. The second layer part 15b in this embodiment is not cohesively with the first elastomeric seal 12a connected, since these only with the first parts of the layer 15a is connected cohesively by injection molding. It therefore results under certain circumstances between the layer part 15b and the first elastomeric seal 12a a minimal gap 14 , Also the first elastomeric seal 12a runs on the inside of the gasket 10 adjacent to the edge 13a of the second layer part 11b completely in the gap 6 around. This will be a complete seal of the gap 6 effected both on its outside and on its inside. The first elastomeric seal 12a here has a smaller cross-sectional area than the second elastomeric seal 12b , the seal on the interior 7 The opposite side is usually a bit more demanding than the one on the interior 7 facing side.

2 B represents a detail of a similar battery box 1 with a tub 2 and a lid 3 as in 2A in a comparable section, with the lid 3 one from the interior 7 remote nose 5a and the tub 2 a groove 2a exhibit the assembly of the gasket 10 simplify. Next shows 2 B a screw passage opening 25 in the flat gasket according to the invention 10 , which are in corresponding openings in tub 2 and lid 3 continues. Through this screw through hole 25 can tub 2 , Flat gasket 10 and lid 3 be connected for example by means of screws.

In the partial pictures 2C to 2G Be exemplary embodiments of the gasket 10 shown, each coupling pins 30 respectively. References to the described battery box 1 are to be understood as purely exemplary and not restrictive.

The 2A and 2 B Here represent sectional views of inventive flat gaskets is where the cut does not reach through one of the coupling pins.

In 2C is a coupling pin 30 shown, which on one of the two flat sides, in the illustrated view of the upper flat side in the figure, on the flat gasket 10 is arranged. The coupling pin shown 30 here is representative of a whole series of coupling pins 30 shown, which along a course of the second elastomeric seal 12b are arranged perpendicular to the plane of the drawing.

In the example shown is the coupling pin 30 integral with the second elastomeric seal 12b executed and is present here in the right, ie the interior of the battery case facing, third of the cross section of the elastomeric seal 12b so that it does not affect their sealing effect. But it could also be integral with the first elastomeric seal 12a be executed (and arranged on this), or another coupling pin 30 ' ( 2D ) or another row of coupling pins could be integral with the first elastomeric seal 12a be executed. The coupling pin 30 and the one or more other coupling pins could also be present at the same time, as for example in 2D is shown.

In the present case, this has as a lid 3 executed housing part a hole 31 on, which for receiving the coupling pin 30 the flat gasket 10 is determined. This hole 31 is again shown here by way of example for a series of holes, which runs perpendicular to the plane of the drawing. The hole 31 is executed in the example shown as a blind hole, which due to different diameter an end 32 of the coupling pin 30 also in the longitudinal direction of the coupling pin 30 partially encompasses or encompasses. Accordingly, the diameter of the hole 31 in a deeper area, viewed from the insertion side, larger than in an entrance area 33 , The entrance area 33 comes thus with mounted flat gasket in plant with an intermediate area 34 of the coupling pin 30 ,

In 2D an example is shown in which two coupling pins 30 . 30 ' you can see. The one coupling pin 30 is integral with the second elastomeric seal 12b executed, the further coupling pin 30 ' with the first elastomeric seal 12a , The corresponding holes 31 . 31 ' are designed here as simple through holes, which simplifies the production. Accordingly, the respective intermediate areas 34 . 34 ' with mounted flat gasket 10 inside the lid 3 arranged, whereas the respective end portions 32 . 32 ' then in abutment with an outside 35 of the lid 3 are arranged. Because the diameter of the coupling pins 30 . 30 ' in the respective intermediate area 34 . 34 ' less than in the end areas 32 . 32 ' So will the gasket 10 reliable on the lid 3 held. The coupling pins 30 . 30 ' So have a (mushroomed) head, which slipping out of the coupling pins 30 . 30 ' from the holes 31 . 31 ' prevented. The head thus corresponds to the carrier layer distant, so the carrier layer remote, end 32 . 32 ' of the respective coupling pin 30 . 30 ' ,

In 2E is another exemplary embodiment of a coupling pin 30 shown. The coupling pin 30 in the present case is not on one of the elastomer seals 12a . 12b arranged, but extends as a separately manufactured component through the gasket 10 , here the carrier layer 11 therethrough. This is the coupling pin 30 reliable with the flat gasket 10 connected, but does not interact with the sealing effect of the elastomeric seals 12a . 12b , On his head area 32 facing away from the coupling pin has a widened foot area 38 on, which prevents slipping out of the coupling pin. In particular, the coupling pin can be mounted here so that it is pushed through and then twisted. For this purpose, the head region is preferably not rotationally symmetrical. Although the coupling pin may also be made of an elastomer material here, it is preferred if it consists of a plastic material, for example a fiber-reinforced thermoplastic or at least has this.

In 2F is a particularly advantageous embodiment of a coupling pin 30 with the associated flat gasket 10 shown. There are the two elastomer seals 12a . 12b integral with an elastomer layer 36 executed, which is the carrier layer 11 jacketed. The coupling pin 30 in turn extends through the carrier layer 11 through and is also integral with the elastomeric layer 36 and thus with the elastomer seals 12a . 12b executed. However, it is also conceivable that the elastomeric seals 12a . 12b and the elastomeric layer 36 and / or the coupling pin 30 are made by two-component injection molding, ie consist of different materials. As in 2G shown, the coupling pin 30 also with the elastomer layer 36 be shed without getting through the carrier layer 11 to extend through.

In the partial pictures 2H to 2M become exemplary embodiments of the coupling pins 30 shown. These are partly with the elastomer layer 36 and partly with the elastomeric seals 12a . 12b shown. The respectively explained forms of the coupling pins 30 are however of the arrangement on elastomeric layer 36 or the elastomeric seals 12a . 12b independently.

The coupling pins shown 30 in this case is common that they each have a base area 37 respectively. This pedestal area 37 is between the intermediate area 34 and the part of the gasket 10 to which the respective coupling pin 30 is arranged, so the elastomeric seal 12a . 12b , the elastomeric layer 36 or the carrier layer 11 arranged. The pedestal area 37 has compared to the intermediate area 34 an enlarged diameter. In the examples shown, the base area tapers 37 towards the end area 32 of the coupling pin 30 respectively, according to the hole 31 provided in the assigned area with a cone. This cone also facilitates the insertion of the coupling pins 30 in the hole 31 , Accordingly, the end region 32 for easier insertion into the hole 31 be executed with a tapered tip.

While in 2H a tapered intermediate area 34 is present, opposite to the end area 32 widened, fall in 2I intermediate area 34 and end area 32 essentially together, because the area above the base area 37 has no undercut. The attachment of the coupling pin 30 in the hole 31 occurs via an excess of elastomeric material of the coupling pin 30 ,

Exemplary shapes of the end region 32 with undercut are in the 2K-M compared. So can the end area 32 in cross-section parallel to the longitudinal axis of the coupling pin 30 be executed trapezoidal, or else have the shape of a circular or elliptical segment. The end area 32 can also be made of different materials, the element 39 in 2L is one from the top of the lid 3 applied fastener, for example made of plastic. In a more detailed representation of the type of attachment was omitted here, they can in particular form fit, such as by means of a bayonet or screw or force fit, for example, an excess of elastomeric material of the coupling pin 30 im in the element 39 projecting area.

3A shows an exemplary flat gasket 10 in the supervision, around an opening 8th circulates. The hatching only serves to distinguish the different parts and should by no means indicate a sectional view. The carrier layer 11 consists of individual in cross-section shown separately layer parts, namely first layer parts 15a and second layer parts 15b extending in the longitudinal direction of the seal 10 , ie, in the direction of rotation along the gap 6 alternate with each other. On the outside or inside to the layer parts 15a and 15b runs a first elastomeric seal 12a or a second elastomeric seal 12b , Each of these elastomer seals 12a and 12b runs closed completely along the gap 6 around the interior 7 and therefore also around the opening 8th the gasket around.

The first layer parts 15a are with the inside circumferential first elastomeric seal 12a bonded by injection molding. The second layer parts 15b are with the outside circumferential elastomer seal 12b bonded by injection molding. By assembling these two partial seals thus produced, the complete flat gasket according to the invention results 10 ,

The layer parts of the carrier layer 11 in the present case continue coupling pins 30 auf, which only in the detailed view of 3A are shown. The layer parts 15a . 15b be through the coupling pins 30 attached to the not shown here below the plane of the drawing tray of a battery box and / or attached to the lid, not shown here above the plane of the drawing. Preferably, the assembly takes place only on one of the housing components via the coupling pins 30 , The overall assembly of the housing is usually done by means of screws or bolts through the through holes 25 , Due to the double-sided sealing of the carrier layer 11 by means of the first elastomeric seal 12a and the second elastomeric seal 12b will be the passage of media across the gap 6 reliably prevented both from the inside to the outside of the battery box and from the outside to the inside of the battery box. The coupling pins 30 In the example shown, they are each arranged so that they are very close to the edge of the elastomeric seals facing the carrier layer 12a . 12b are arranged, ie, clearly removed from that of the elastomeric seals 12a . 12b training or trainee sealing lines. By using the carrier layers, here a metallic carrier layer made of spring steel, which additionally by the coupling pins 30 with the tub 2 or the lid 3 is coupled to the battery case, a high mounting security is guaranteed even before the final installation of the entire housing.

3B shows another exemplary flat gasket 10 in the supervision, around an opening 8th circulates. The flat gasket 10 has a continuous peripheral carrier layer 11 on, on which the coupling pins 30 are attached, for example, as in 2E is shown.

4 shows in the drawing files A and B the first part seal consisting of the first parts of the layer 15a and the first elastomeric seal 12a ( 4B) and the second part seal consists of the second layer parts 15b and the second elastomeric seal 12b ( 4A) according to the embodiment of the flat gasket 10 in 3A , In the non-carrier-bonded areas of the elastomer seals, these can be folded, so that the transport is simplified. On top of that, the non-carrier-bonded areas can also be produced, for example, folded or placed in bays during production. This will be in 5 in the partial pictures A and B for the second part seal consisting of the second support elements 15b and the second elastomeric seal 12b shown. In 5A it is shown ready to assemble when fully deployed. In 5B the state is shown in which the second part seal is made. For this purpose, in a suitable tool, the recesses for the layer parts 15b and the second elastomeric seal 12b has, the support parts 15b placed in the provided recesses and then in the tool, the second elastomeric seal 12b to these support parts 15b molded. Due to the folded compact production only a compact tool is needed. Furthermore, material losses in the production of the carrier layer are avoided compared to the use of a single rotating carrier, since only short carrier layer sections 15a or 15b (here in 5B) have to be produced for the production of the overall carrier layer. Through the coupling pins 30 the gasket can be stable and reliable when mounting the respective part, such as the lid 3 , being held.

6 shows a further embodiment of a flat gasket in three partial images A . B and C ,

6 shows in partial image A is a plan view of a section around a corner of the gasket 10 , where the first layer parts 15a and the second layer parts 15b are different from each other by different hatching. In this flat gasket 10 now change the first layer parts 15a and the second layer parts 15b Regularly off, leaving the first layer parts 15a and the first elastomeric seal 12a a first part seal and the second layer parts 15b and the second elastomeric seal 12b to form a second partial seal. At both parts of the site 15a . 15b can thereby coupling pins 30 to be available. It may be the example in the 2C-2M act shown coupling pins.

6B shows a cross section along the line AA in 6A , Here is the first layer part 15a inside on its inner edge 13a with the first elastomeric seal 12a cohesively connected. Between the first layer part 15a and the second elastomeric seal not connected thereto 12b can be a gap for tolerance compensation 14b form.

6C shows a cross section along the line BB , In this cross-section is the second layer part 15b on its outer edge 13b cohesively with the second elastomeric seal 12b , which surrounds the outside around the flat gasket, materially connected. The first elastomeric seal 12a is only in a non-connected manner to the second part of the layer 15b on, with a gap 14a can train.

7 shows a further embodiment of a flat gasket 10 in sections in cross section as in 6 , 7B shows the cross section along the line CC and 7C shows the cross section along the line DD , In this embodiment, the flat gasket 10 are now the elastomer seals 12a . 12b not merely molded onto the respective adjacent edge of the adjacent layer part. Rather, the layer parts 15a . 15b completely overmoulded with the material of the elastomeric gaskets 12a or. 12b , This results on the parts of the site 15a and 15b also in the intermediate area between the two elastomeric seals 12a and 12b a further seal by the elastomeric material applied to the ply parts. At both parts of the site 15a . 15b can thereby coupling pins 30 to be available. It may be the example in the 2C-2M act shown coupling pins.

8th shows a further embodiment of the flat gasket, wherein the same cross sections and top views as in 6 are shown.

The embodiment of the 8th is different from the one of 6 and also of those in 7 in that now, though again, first layer parts 15a and second layer parts 15b take turns. The first layer parts 15a in cross-section along the line EE in 8B however, are now on both sides at their outer edges 13a and 13b each with one of the first and second elastomeric seals 12a and 12b cohesively connected. The first layer parts 15a , the first elastomeric seal 12a and the second elastomeric seal 12b now form a first partial seal. At the in 8A illustrated finished assembly of the gasket 10 Now be between the two elastomer seals 12a and 12b and also between spaced but adjacent first layer portions 15a second layer parts 15b inserted. These are with none of the elastomer seals 12a and 12b cohesively connected, as in in 8C illustrated cross-section along the line FF in 8A can be seen. Overall, this results in a flat gasket 10 with a subdivided into layer parts throughout in the gap 6 circumferential carrier layer 11 , on both sides, outward and inward, via elastomer seals 12a . 12b sealed. At both parts of the site 15a . 15b can thereby coupling pins 30 to be available. It may be the example in the 2C-2M act shown coupling pins.

9 shows in subfigures A and B two variants of in 2 or in 6 illustrated gasket 10 , The connection of first layer parts 15a with the first elastomeric seal and the second layer parts 15b with the second elastomeric seal 12b is like in 6 shown. In contrast to 6 are now however adjacent parts of the layer 15a and 15b at its junction 16 at linking sites 19 . 19 ' together in the layer plane of the carrier layer 11 positively connected. This connection is made by linking the layer parts 15a . 15b by means of recesses with an undercut in one of the layer parts and corresponding protrusions with extensions in the adjacent layer part in a form such as is known for example from puzzle pieces.

By such a connection, the ply parts, which are adjacent to each other, largely determined with respect to their position. Nevertheless, these connections can be made so that a small gap between the adjacent layer parts can arise if necessary, so that manufacturing tolerances of the housing by means of this seal 10 be sealed, can be compensated. The small gaps can also during the assembly of the coupling pins, not shown here 30 to provide more flexibility.

Also in the embodiment of the 9B are such joints 19 . 19 ' intended. In addition to this, a corresponding connection is also provided between layer parts and adjacent elastomer seals. At the other connection points 20 In each case, a bearing part has a recess 24 with undercut on. The adjacent elastomeric seal has there for its part a projection 23 on, which is complementary to the recess 24 is formed with a broadening. By engagement of the projection 23 into the recess 24 is the respective elastomeric seal (with respect to movements in the plane of the carrier layer) positively, but not materially connected, connected to the adjacent layer part with which the elastomeric seal otherwise not connected, in particular not materially connected, is. This type of connection is therefore suitable for connecting first layer parts 15a with second elastomeric seals 12b or of second layer parts 15b with first elastomer seals 12a , especially during assembly, as in 9B shown.

Claims (21)

Flat gasket (10) for sealing a gap (6) circulating around an inner space (7) of a housing (1, 2, 3) in the housing, with a flat layer (11) extending substantially around an opening (8), which has an inner edge (13a) facing the opening and an outer edge (13b) facing away from the opening, characterized in that the flat seal (10) comprises a plurality of coupling pins (30 ) for mechanically coupling the flat gasket (10) to a carrier (2, 3), the longitudinal axis of which extends substantially perpendicular to a main extension plane of the flat gasket (10). Flat gasket (10) after Claim 1 , characterized in that the coupling pins (30) are arranged such that they are arranged in normal use outside a sealing line. Flat gasket (10) according to any one of the preceding claims, characterized in that on at least one flat side of the flat gasket (10) at least partially a sealing means, in particular a sealing coating (36) is mounted. Flat gasket (10) according to one of the preceding claims, characterized in that the coupling pins (30) have a respective latching element, in particular an end region (32), which thickened compared to one of the remaining flat gasket (10) closer intermediate region (34) of the coupling pin is. Flat gasket (10) according to any one of the preceding claims, characterized in that one or more coupling pins (30) are arranged on the flat layer (11) and extend in particular in the direction of its longitudinal axis through the flat layer (11). Flat gasket (10) according to one of the preceding claims, characterized in that the flat gasket (10) has a first elastomeric seal (12a) which is preferably arranged on the inner edge of the flat layer (11) and which is connected at least in sections to the flat layer, and / or one of these Having on the outer edge of the flat layer (11) and at least partially connected to the flat layer (11) second elastomeric seal (12b), wherein one or more coupling pins on the first elastomeric seal (12a) and / or the second elastomeric seal (12b) are and in particular integral with the respectively associated elastomeric seal (12a, 12b) are executed. Flat gasket (10) according to any one of the preceding claims, characterized in that the flat layer (11) has an elastomer layer (36) which connects the two elastomeric seals (12a, 12b), and which in particular integrally with the two elastomeric seals (12a, 12b ) is executed. Flat gasket (10) after Claim 6 or 7 characterized in that one or more coupling pins (30) on the flat sheet (11) are integral with the elastomeric seal and / or elastomeric layer (36). Flat gasket (10) according to one of the preceding claims, characterized in that one or more coupling pins (30) in a base region (37) have a larger diameter than in an adjoining the base region intermediate region (34) of the coupling pin (30), which further away from the remainder of the flat gasket (10) than the pedestal region (37). Flat gasket (10) after Claim 6 characterized in that the flat layer (11) has a multiplicity of layer parts (15a, 15b) arranged one behind the other in the circumferential direction, with at least two first layer parts (15a) spaced apart from each other by at least one second layer part (15b), each of the first layer parts (15) 15a) is materially connected to the first elastomeric seal (12a) and / or one, several or all of the first layer parts (15a) are materially connected to the second elastomeric seal (12b). Flat gasket (10) according to the preceding claim, characterized in that at least one second layer part (15b) is arranged between respectively adjacent first layer parts (15a) and between the first elastomeric seal (12a) and the second elastomeric seal (12b). Flat gasket (10) after Claim 10 or 11 , characterized in that the flat gasket (10) has first and second elastomeric seals (12a, 12b) and the flat layer, (11) the first elastomeric gasket (12a) and the second elastomeric gasket (12b) together to at least partially encircling the orifice Seal (10) are composable or assembled. Flat gasket (10) after one of Claims 10 to 12 , characterized in that the plurality of layer parts at least two second, by at least a first layer part (15a) spaced layer parts (15b), wherein each of the second layer parts (15b) with the second elastomeric seal (12b) is materially connected. Flat gasket (10) according to the preceding claim, characterized in that the first layer parts (15a) are non-materially connected to the second elastomeric seal (12b) and / or the second layer parts (15b) are not cohesively connected to the first elastomeric seal (12a). Flat gasket (10) after one of Claims 10 to 14 , characterized in that at least two, several or all adjacent (n) layer parts (15a, 15b) are positively connected or connected to one another in the layer plane. Flat gasket (10) after one of Claims 10 to 15 , characterized in that the first layer parts (15a) and / or the second layer parts (15b), in particular all layer parts of the flat layer (11), made of metal, in particular of a metal containing the group consisting of stainless steel, spring steel, non-spring hard Structural steel, aluminum alloys, or of a plastic / resin, in particular containing a thermoplastic such as polyamide, consist or contain. Flat gasket (10) after one of Claims 10 to 16 , characterized in that the coupling pins and / or the sealing means and / or the first elastomeric seal and / or the second elastomeric seal and / or the elastomer layer contain at least one of the following materials or consist of one of the following materials: fluororubber; Acrylonitrile-butadiene caoutchouc; hydrogenated acrylonitrile-butadiene rubber; Ethylene propylene caoutchouc; polyacrylate; Ethylene-acrylate rubber; Silicone rubber; Ethylene-vinyl acetate rubber; thermoplastic elastomer. Flat gasket (10) after one of Claims 10 to 17 , characterized in that the flat gasket (10) extends in the direction of rotation about the opening over a length L with L ≥ 100 cm, preferably L ≥ 180 cm, preferably L ≥ 250 cm. Flat gasket (10) after one of Claims 10 to 18 , characterized in that the opening of the flat gasket (10) extends in one or in both of two mutually orthogonal directions of extension at least 60 cm, advantageously at least 80 cm, advantageously at least 100 cm. Flat gasket (10) after one of Claims 10 to 19 as a frame seal between two housing parts (2, 3) of a housing (1), in particular a housing trough and a housing cover, in particular a battery housing or a battery box. Housing part, in particular housing cover (3), which has a particular for engagement with a flat gasket (10) sealing region and in this sealing region has holes (31) suitable for receiving coupling pins (30) of a flat gasket (10) according to any one of the preceding claims are.

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