EMC enclosure, enclosure part of an EMC enclosure and use

Abstract

The invention relates to an EMC housing (1) for an electrical component (2), comprising at least a first housing part (3) and a second housing part (4) which are connected to each other via a sealing surface (5) and together enclose a volume (6) of the housing (1) in a liquid-tight manner, wherein a plate-shaped third housing part (7) is arranged within the volume (6) between the first housing part (3) and the second housing part (4); wherein the third housing part (7) has a plurality of elastically deformable contact elements (9, 10) in at least one connection area (8) with at least one of the first housing part (3) and the second housing part (4) to form an electrically conductive connection of the housing parts (3, 4, 7) to each other.

Description

[0001] The invention relates to an EMC enclosure, an enclosure component of an EMC enclosure, and a use of an EMC enclosure. The enclosure or enclosure components serve, in particular, to ensure electromagnetic compatibility (EMC) when arranging an electrical component by shielding it from its environment.

[0002] The shielding of electrical or electrotechnical components serves to keep away from electric and magnetic fields, especially those occurring at higher frequencies, or conversely, to protect the environment from the fields emanating from the component.

[0003] Shielding is achieved in particular by electrically conductive metal sheets, foils, or layers connected to earth or reference potential (or ground). Examples include metallized plastic films, aluminum foil-laminated paper, and graphite and conductive paint layers. It is also known to coat plastic housings with a metallic layer.

[0004] The shielding is designed, in particular, as a housing or housing component, wherein the housing encloses a volume in which at least one electrical (to be shielded) component is arranged. The housing must also allow for the mounting of the components arranged within it, so that a so-called EMC mounting plate is often arranged inside the housing.

[0005] Such housings are typically made up of multiple parts. For example, the housing comprises a lid (first housing part), a base (second housing part), and a mounting plate (third housing part) located between the base and lid. The mounting plate extends within the volume of the housing enclosed by the base and lid, forming sub-volumes of that volume.

[0006] For electromagnetic shielding, it is important that the individual parts of the housing are connected to each other with the lowest possible impedance and form a common potential (ground connection). This requires ensuring an electrically conductive connection between the individual housing parts and to ground or the reference potential.

[0007] The object of the present invention is to at least partially solve the problems cited with reference to the prior art. In particular, a housing or a housing component for a housing is to be proposed that can be manufactured cost-effectively and enables effective shielding of an electrical component.

[0008] To solve these problems, a housing with the features according to claim 1, a housing part with the features according to claim 12, and the use of a housing according to claim 13 contribute. Advantageous further developments are the subject of the dependent claims. The features listed individually in the claims can be combined with one another in a technologically meaningful way and can be supplemented by explanatory details from the description and / or details from the figures, thereby showing further embodiments of the invention.

[0009] An EMC enclosure (hereinafter also referred to as "enclosure") is proposed for an electrical component (e.g. an inverter, in particular an inverter used in a motor vehicle, a converter, etc.).

[0010] The EMC enclosure comprises at least a first enclosure part and a second enclosure part, which are connected to each other via a sealing surface and together form a liquid-tight enclosure within the volume of the enclosure. A plate-shaped third enclosure part is arranged within the volume between the first and second enclosure parts. The third enclosure part has a plurality of elastically deformable contact elements in at least one connection area with at least one of the first and second enclosure parts to form an electrically conductive connection between the enclosure parts. When the enclosure parts are connected to the enclosure, the contact elements are elastically deformed by the enclosure part contacting the respective contact element.

[0011] The EMC enclosure is, in particular, a dimensionally stable enclosure, meaning it is not elastic or only minimally so, but rather plastically deformable. The same applies specifically to the first enclosure part, the second enclosure part, and, to a limited extent, also to the third enclosure part.

[0012] The enclosure primarily serves to shield components located within its volume from the surrounding environment. This includes considering both the impact of electromagnetic radiation emitted by components within the enclosure on the surrounding environment and the impact of electromagnetic radiation from the environment on components located within the enclosure. Additionally, the enclosure should also allow for the mounting of the components within it, which is why a so-called EMC mounting plate (a third enclosure component) is often integrated within the volume.

[0013] The housing components are connected in such a way as to create a uniform ground potential.

[0014] The first housing part is, in particular, a top (upper half) or a lid, and the second housing part is a bottom (lower half) or a base. The first and second housing parts are connected to each other, in particular, via a sealing surface, and enclose the volume in a liquid-tight, and optionally also gas-tight, manner. The third housing part can at least form this sealing surface or be arranged (entirely) within the volume. The third housing part serves, in particular, as a mounting plate for components arranged within the volume. Alternatively or additionally, the third housing part serves to divide the volume into sub-volumes, which are then shielded from each other by the third housing part.

[0015] The third housing part is designed in a plate-like shape. In particular, it is made of sheet metal.

[0016] The third housing part has a plurality of elastically deformable contact elements in at least one connection area with at least one of the first and second housing parts to form an electrically conductive connection between the housing parts. In a connection area, the third housing part contacts either the first housing part, the second housing part, or both housing parts. The third housing part contacts the first housing part, in particular (exclusively), with a top surface, and the second housing part, in particular (exclusively), with a bottom surface.

[0017] The contact elements, via which the other housing parts are contacted, are particularly elastically deformable.

[0018] When the housing parts are joined to form the housing, the contact elements are deformed at least or exclusively elastically (or alternatively, also plastically) by the housing part contacting them. This means that the contact elements are in an undeformed state before the housing is initially assembled and are then deformed during assembly. This also means, in particular, that the contact elements are under preload when the housing is assembled.

[0019] If the housing is disassembled and the housing parts separated, the contact elements can elastically (at least partially) deform back.

[0020] In particular, the majority of the contact elements in the connection area (along one direction of extension) are arranged next to each other and separated from each other by at least (or exactly) one slot. At least two or more slots can also be arranged between any two contact elements of the majority of contact elements, with differently shaped areas (shaped differently than the contact elements) of the third housing part located between the slots.

[0021] A slot is, in particular, an opening in the third housing part that extends from the top to the bottom of the third housing part. The slot is, in particular, elongated, meaning its length is 2 to 50 times greater than its width.

[0022] The slots of a connection area are, in particular, essentially oriented parallel to each other or extend essentially transversely to a straight or possibly curved course (direction of extension) of the connection area.

[0023] In particular, the slot extends in a straight line, but can also have a curved shape along its length.

[0024] The slot serves in particular to ensure that the contact elements arranged between two slots can be deformed independently of each other or independently of the surrounding area of ​​the third housing part (elastically, possibly also plastically).

[0025] In particular, the contact elements in the connection area are arranged side by side along a direction of extension, and the at least one slot has a length of 5 to 50 millimeters, in particular 10 to 30 millimeters, preferably 15 to 20 millimeters, extending transversely to the direction of extension.

[0026] In particular, at least one of the contact elements between two slots has a width of 5 to 20 millimeters, especially 7 to 15 millimeters.

[0027] In particular, the at least one slot has a width (extending transversely to its length) of zero to 5 millimeters, especially 0.2 to 5 millimeters, preferably 0.4 to 2.5 millimeters. The width is particularly constant along the length. The slot can be created, for example, by separating the material (possible width of zero millimeters) or, for example, by removing material (possible width of more than zero millimeters).

[0028] In addition to the (first) slots arranged between the contact elements, further (second) slots may also be provided, which are arranged particularly at the respective ends of the length of the (first) slots and extend transversely to them. These (second) slots narrow, but do not sever, the transition between the contact element and the flat area surrounding the contact element.

[0029] In particular, the above statements apply to at least 40%, preferably at least 60%, most preferably at least 80% or even to all contact elements and / or slots.

[0030] In particular, the dimensions for length, width and width are each measured in a projection of the described elements onto a plane running perpendicular to the vertical direction.

[0031] In particular, the respective contact element is defined by the length of the slots and the width of the contact element, wherein the contact elements comprise between 0.5% and 80%, in particular between 5% and 20%, of a total area of ​​the third housing part (i.e., area of ​​the top or area of ​​the bottom, in particular as a projection into a plane defined, for example, by the perimeter of the third housing part).

[0032] In particular, the contact elements extend over 25 to 90%, and especially over 50% to 75% of the extent of the circumference of the third housing part.

[0033] In particular, the third housing part extends essentially in one plane. This third housing part comprises, on the one hand, flat, planar areas and, on the other hand, contact elements or connection areas. A vertical dimension extends, in particular, perpendicular to this plane. The contact elements extend, in particular, from a first height of the planar areas to a second height. The second height can be located above or below the plane. The distance between the first height and the second height is, in particular, between 0.5 and 10 millimeters, preferably between 2 and 5 millimeters.

[0034] In particular, the surface of the contact element, i.e., between two slots and along its length, is curved; that is, the contact element has a curved or otherwise curved shape along a direction parallel to the slots, e.g., a sawtooth or zigzag pattern or other shape. This creates, in particular, a raised area with a different (second) height compared to the flat area surrounding the contact elements (with a first height).

[0035] In particular, the contact elements in the connection area are arranged side by side along a direction of extension and are deformed relative to a vertical direction by the joining of the housing parts. In an undeformed state (i.e., before the housing is assembled and before any elastic deformation of the contact elements), the contact elements have either the same or different heights along their direction of extension. These height differences can vary by, in particular, 5% to 200%, and in particular, 50% to 150% of the maximum distance. This means, firstly, that the contact elements extend in opposite directions relative to the plane (first height) to a second height of equal magnitude. Secondly, it means that, for example, between two contact elements extending to the same second height, one contact element extends to a slightly lower second height.This means, for example, that the contact elements extending to the greater height are deformed more (elastically) than the contact elements extending to the lesser height.

[0036] In particular, of two adjacent contact elements, a first contact element contacts only the first housing part and a second contact element contacts only the second housing part.

[0037] In particular, the third housing part extends along a central plane in the connection area, and of the two adjacent contact elements, a first contact element is oriented from the central plane towards the first housing part, and a second contact element is oriented from the central plane towards the second housing part. Specifically, this means that these contact elements extend in opposite directions relative to the plane or central plane (first height) to a second height that is either equal in magnitude or different in magnitude.

[0038] In particular, the contact elements in the connection area are arranged side by side along a direction of extension and are deformed relative to a height direction by the connection of the housing parts. Specifically, at least one contact element has a height that varies along the direction of extension in an undeformed state. Specifically, the contact element has a greatest second height (hereinafter also referred to as maxima) adjacent to each of the two slots that define the contact element, and a smallest second height (minimum) between these two greatest second heights (maxima). Specifically, this smallest second height (minimum) is also greater than a first height.

[0039] In particular, at least one contact element has a contact surface with a structure that contacts the respective housing part, wherein the structure contacts the housing part during elastic deformation of the contact element and damages its housing part surface. Damaged means, in particular, that, for example, an oxide layer present on the housing part surface is broken up by the edge and by the deformation of the contact element, so that an electrically conductive connection between the housing parts is ensured or is ensured via the contact element.

[0040] The structure can, for example, have sharp edges (edge ​​radius less than 0.2 millimeters, in particular less than 0.1 millimeters; adjacent surfaces of the edge have an angle of 20 to 160 degrees). The structure can be formed, for example, by the edges of the contact element adjacent to the slot. These edges are oriented towards the housing part in the undeformed state (i.e., before the housing is assembled and before any elastic deformation of the contact elements), so that the edge itself contacts the housing part. In particular, the surfaces of the contact element adjacent to the edge extend at an angle of at least 20 to 120 degrees to a contacted surface of the housing part (the housing part surface).

[0041] In particular, the third housing part consists of a metallic material. Any electrically conductive material is suitable as a metallic material, especially one with an electrical conductivity between that of aluminum (as a cost-effective material) and that of copper (as a material with high conductivity).

[0042] In particular, the sealing surface between the first housing part and the second housing side is designed to completely encircle the entire volume. The sealing surface thus extends around the respective housing part or the enclosed (partial) volume. The respective seal (e.g., a conventional, electrically non-conductive seal or a generally known, electrically conductive EMC seal) extends along the sealing surface, also completely encircling it.

[0043] In particular, the electrically conductive connection between the first and second housing parts is ensured by the third housing part. Fasteners (e.g., screws or rivets) used to connect the first and second housing parts can also form an electrically conductive connection, but this is usually insufficient for a low-impedance connection between the housing parts.

[0044] A further housing part of the described EMC housing is proposed, wherein the housing part is the third housing part.

[0045] It is further proposed that the described EMC housing be used as an electrical component for an inverter.

[0046] In particular, the EMC housing is intended for installation in motor vehicles, especially as a housing for an electrical component used in connection with a traction drive or an electric machine of the motor vehicle.

[0047] The statements regarding the EMC housing are particularly applicable to the third housing part and its use, and vice versa.

[0048] The use of indefinite articles (“a”, “an”, “one”, and “ones”), particularly in the patent claims and the description reproducing them, is to be understood as such and not as a numeral. Accordingly, terms or components introduced by these articles are to be understood as occurring at least once and, in particular, may also occur multiple times.

[0049] It should be noted as a precaution that the numerical terms used here ("first", "second", etc.) primarily serve (only) to distinguish between several similar objects, quantities, or processes, and thus do not necessarily dictate any dependency and / or sequence between these objects, quantities, or processes. Should a dependency and / or sequence be required, this is explicitly stated here, or it will be obvious to a person skilled in the art upon studying the specific configuration described. Where a component can occur multiple times ("at least one"), the description of one of these components may apply equally to all or a portion of the majority of these components, but this is not mandatory.

[0050] The invention and its technical context are explained in more detail below with reference to the accompanying figures. It should be noted that the invention is not limited by the exemplary embodiments shown. In particular, it should be noted that the figures, and especially the depicted dimensions, are only schematic. They show: Fig. 1: a known arrangement of an inverter and an electric motor; Fig. 2: an inverter in a side view in section and an enlarged section; Fig. 3: an inverter in a perspective view; Fig. 4: a lower part of the inverter to Fig. 2 in a perspective view in section; Fig. 5: one in the inverter after Fig. 4. Inserted third housing part in a top view; Fig. 6: the enlarged section of the Fig. 2, in a side view of the inverter in section; Fig. 7: a detail of the inverter after Fig. 2 in a perspective view in section; Fig. 8: a first design variant of contact elements in a view perpendicular to the direction of extension; Fig. 9: the contact elements after Fig. 8 in a view along the direction of extension; Fig. 10: a second design variant of contact elements in a view perpendicular to the direction of extension; Fig. 11: the contact elements after Fig. 10 in a view along the direction of extension; Fig. 12: a section of a first design variant of a housing before the housing parts are assembled, in a side view in section; Fig. 13: the section after Fig. 12 in the assembled state; Fig. 14: a section of a second variant of a housing before assembly of the housing parts in a side view in section; and Fig. 15: the section after Fig. 14 in the assembled state.

[0051] The Fig. Figure 1 shows a known arrangement of an inverter (electrical component 2) and an electric motor 22. The arrangement includes the electrical component 2 with an EMC housing 1, the electric motor 22, their electrical connections 23, and signal lines 24.

[0052] Fig. Figure 2 shows an inverter in a side view in section and an enlarged section. Fig. Figure 3 shows an inverter in a perspective view. Fig. 2 and Fig. The three will be described together below. The explanations regarding... Fig. 1 is referred to.

[0053] The electrical component 2, shown here as an inverter, is arranged in an EMC housing 1. The housing 1 serves to ensure electromagnetic compatibility (EMC) for the arrangement of the electrical component 2 by shielding it from an environment 25.

[0054] The shielding of electrical or electrotechnical components 2 serves to keep away from electric and magnetic fields, especially those occurring at higher frequencies, or conversely to protect the environment 25 from the fields emanating from component 2.

[0055] The shielding is achieved by electrically conductive housing parts 3, 4, 7 connected to ground 27. The housing parts 3, 4 enclose a volume 6 in which the electrical (to be shielded) component 2 is located. An electrically conductive connection of each individual housing part 3, 4, 7 to ground 27 must be ensured.

[0056] For multi-part housings 1, the at least liquid-tight (and possibly even gas-tight) sealing of the volume 6 enclosed by the housing 1 against the environment 25 must also be considered. It is known, for example, to provide an electrically non-conductive sealing element in the area of ​​the sealing surface 5 of the contacting housing parts 3, 4, whereby the electrically conductive connection of the individual housing parts 3, 4 is then ensured, for example, (only or essentially) by means of connecting elements 26, such as screws. Alternatively, a known EMC seal can be used in the area of ​​the sealing surface.

[0057] Fig. Figure 4 shows a lower part of the inverter. Fig. 2 in a perspective view in section. Fig. 5 shows a position in the inverter after Fig. 4 inserted third housing part 7 in a top view. Fig. Figure 6 shows the enlarged section of the Fig. 2, in a side view of the inverter in section. Fig. Figure 7 shows a detail of the inverter. Fig. 2 in a perspective view in section. The Fig. 4, Fig. 5, Fig. 6 to Fig. Seven will be described together below. The explanations regarding the Fig. 1, Fig. 2 to Fig. Reference is made to point 3.

[0058] The EMC housing 1 comprises a first housing part 3 (see Fig. 2, Fig. 3 and Fig. 6) and a second housing part 4, which are connected to each other via a sealing surface 5 and together enclose a volume 6 of the housing 1 in a liquid-tight manner, wherein a plate-shaped third housing part 7 is arranged within the volume 6 between the first housing part 3 and the second housing part 4. The third housing part 7 has several connection areas 8 with at least one of the first housing part 3 (e.g. Fig. 7) and the second housing part 4, a plurality of elastically deformable contact elements 9, 10 are attached to form an electrically conductive connection between the housing parts 3, 4, 7. When the housing parts 3, 4, 7 are connected to the housing 1, the contact elements 9, 10 are elastically deformed by the housing part 3, 4 that contacts the respective contact element 9, 10.

[0059] The EMC housing 1 is a dimensionally stable housing 1, meaning it is not elastic or only minimally so, but only plastically deformable. The same applies to the first housing part 3, the second housing part 4, and, with limitations, also to the third housing part 7 (the contact elements 9, 10 of the third housing part 7 are elastically deformable).

[0060] The housing parts 3, 4, 7 are connected to each other in such a way that a uniform ground potential is realized.

[0061] The first housing part 3 is a top (upper half) or lid, and the second housing part 4 is a bottom (lower half) or base. The first housing part 3 and the second housing part 4 are connected to each other via a sealing surface 5 and enclose the volume 6 in a liquid-tight, and optionally also gas-tight, manner. The third housing part 7 is located entirely within the volume 6. The third housing part 7 serves as a mounting plate for components 2 located within the volume 6. Additionally, the third housing part 7 serves to divide the volume 6 into sub-volumes, which are then shielded from each other by the third housing part 7.

[0062] The third housing part 7 is designed in a plate-like shape. It is manufactured as a sheet metal forming part.

[0063] The third housing part 7 has a plurality of elastically deformable contact elements 9, 10 in the connection areas 8 to form an electrically conductive connection between the housing parts 3, 4, 7. In a connection area 8, the third housing part 7 either contacts only the first housing part 3 (e.g., Fig. 7) or only the second housing part 4 or both housing parts 3, 4 (e.g. along the circumference 28 of the housing 1). In this case, the third housing part 7 contacts the first housing part 3 exclusively with a top side and the second housing part 4 exclusively with a bottom side.

[0064] The contact elements 9, 10, via which the contacting of the other housing parts 3, 4 takes place, are elastically deformable.

[0065] When the housing parts 3, 4, 7 are joined to form the housing 1, the contact elements 9, 10 are deformed at least or exclusively elastically (alternatively also plastically) by the housing part 3, 4 which contacts the respective contact element 9, 10. This means that the contact elements 9, 10 are in an undeformed state before the housing 1 is initially assembled (see, for example, the following). Fig. 5, 8 to 12 and 14) are present and are then deformed during assembly (see e.g. Fig. 13 and Fig. 15). This also means that the contact elements 9, 10 are under a preload when the housing 1 is assembled.

[0066] The contact elements 9, 10 are arranged side by side in the connection area 8 along an extension direction 12 and are separated from each other by exactly one slot 11.

[0067] A slot 11 is an opening in the third housing part 7, extending from the top to the bottom of the third housing part 7 (see Fig. 5) extends. The slot 11 is elongated, meaning its length 13 is approximately 20 times greater than its width 29.

[0068] The slots 11 of a connection area 8 are oriented parallel to each other or extend transversely to a straight line (e.g. along the circumference 28, see figure). Fig. 5) or possibly a curved course (see also Fig. 5 in the area 30) of the connection area 8.

[0069] The slots 11 each extend in a straight line (in a view along the vertical direction 16).

[0070] The slot 11 serves to ensure that the contact elements 9, 10 arranged between two slots 11 are deformable independently of each other or independently of the surrounding area 30 of the third housing part 7 (elastically, possibly also plastically).

[0071] The contact elements 9, 10 are arranged side by side in the connection area 8 along a direction of extension 12. The slots 11 of the contact elements 9, 10, which are spaced apart from the circumference 28 (in the planar area 30), have a length 13 of approximately 25 millimeters extending transversely to the direction of extension 12. The slots 11 of the contact elements 9, 10 arranged on the circumference 28 have a length of approximately 10 millimeters.

[0072] The contact elements 9, 10 arranged around the circumference 28 have a width of 15 millimeters between two slots 11. The contact elements 9, 10 spaced apart from the circumference 28 (in the planar area 30) have a smaller width of approximately 10 millimeters between slots 11.

[0073] The slots 11 have a width 29 of 1 (one) millimeter extending transversely to the length 13. The width 29 is constant along the length 13.

[0074] The respective contact element 9, 10 is defined by the length 13 of the slots 11 and the width 14 of the contact element 9, 10, wherein the contact elements 9, 10 comprise approximately 15% of a total area 15 of the third housing part 7 (i.e., area of ​​the top or area of ​​the bottom, as a projection into a plane 18, which is defined, for example, by the perimeter 28 of the third housing part 7).

[0075] The contact elements 9, 10 extend over approximately 70% of the circumference 28 of the third housing part 7.

[0076] The third housing part 7 extends essentially in a plane 18. This third housing part 7 has, on the one hand, flat, planar areas 30 and, on the other hand, contact elements 9, 10 or connection areas 8. A vertical dimension 16 extends transversely to the plane 18. The contact elements 9, 10 extend from a first height 17 of the planar areas 30 to a second height 31. The second height 31 can be located above or below the plane 18 (in Fig. 7 e.g. above). The magnitude of a distance 32 between the first height 17 and the second height 31 is, for the contact elements according to Fig. 7, for example, 7 millimeters.

[0077] The surface of the contact element 9, 10, i.e., between two slots 11 and along the length 13, is curved, i.e., the contact element 9, 10 has a curved or otherwise curved shape along a direction parallel to the slots 11 (see Fig. 4, Fig. 7). This creates a raised area with a second height 31, relative to the flat area 30 surrounding the contact elements 9, 10, which has a first height 17.

[0078] Fig. Figure 8 shows a first embodiment of contact elements 9, 10 in a view transverse to the extension direction 12, in a view according to section VIII-VIII in Fig. 9. Fig. Figure 9 shows the contact elements 9, 10 after Fig. 8 in a view along the extension direction 12, in a view according to section IX-IX in Fig. 8. The Fig. 8 and Fig. The nine items are described together below. The explanations regarding the following... Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. 7 is referred to.

[0079] The surface of the contact element 9, 10, i.e., between two slots 11 and along the length 13, is curved, i.e., the contact element 9, 10 has a curved shape along a direction parallel to the slots 11 (see Fig. 9). This creates a raised area with a second height 31, relative to the flat area 30 surrounding the contact elements 9, 10, which has a first height 17.

[0080] In an undeformed state (i.e., before the housing 1 is assembled and before any elastic deformation of the contact elements 9, 10), the contact elements 9, 10 each have the same second heights 31 along the extension direction 12. Each of the contact elements 9, 10 has a constant second height 31 along the extension direction 12.

[0081] Fig. Figure 10 shows a second embodiment of contact elements 9, 10 in a view transverse to the extension direction 12, in a view according to section XX in Fig. 11. Fig. Figure 11 shows the contact elements 9 and 10. Fig. 10 in a view along the extension direction 12, in a view according to section XI-XI in Fig. 10. The Fig. 10 and Fig. The 11 items are described together below. The explanations regarding the Fig. 8 and Fig. 9 is referred to.

[0082] In contrast to the first embodiment, the contact elements 9, 10, in an undeformed state, have a second height 31 that varies along the direction of extension 12. Adjacent to the two slots 11 that define each contact element 9, 10, the contact elements 9, 10 each have a maximum second height 31 (maxima) and a minimum second height 31 (minimum) between these two maximum second heights 31 (maxima). The minimum second height 31 is greater than a first height 17 of the planar area 30.

[0083] The contact elements 9, 10 have a contact surface 19 with a structure 20 that contacts the respective housing part 3, 4. During elastic deformation of the contact element 9, 10, the structure 20 contacts the housing part 3, 4 and damages its housing part surface 21. The structure 20 has sharp edges 33 (edge ​​radius very small, adjacent surfaces of the edge 33 have an angle of approximately 40 degrees). The structure 20 is formed by the edges 33 of the contact element 9, 10 adjacent to the slot 11. In the undeformed state (i.e., before the housing 1 is assembled and before elastic deformation of the contact elements 9, 10), these edges 33 are oriented towards the housing part 3, 4, so that the edge 33 itself contacts the housing part 3, 4. The surfaces of the contact element 9, 10 adjacent to edge 33 extend at an angle of 90° and approximately50 degrees angle to a contacted housing part surface 21 of the housing part 3, 4.

[0084] Fig. Figure 12 shows a section of a first version of a housing 1 before the housing parts 3, 4, 7 are assembled in a side view in section. Fig. Figure 13 shows the section after Fig. 12 in the assembled state. The Fig. 12 and Fig. Thirteen are described together below. The explanations regarding the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10 to Fig. 11 is referred.

[0085] The contact elements 9, 10 are arranged side by side in the connection area 8 along a direction of extension 12 and are deformed relative to a vertical direction 16 during the joining of the housing parts 3, 4, 7. The planar area 30 of the third housing part 7 extends between the contact elements 9, 10. The contact elements 9, 10 exhibit the following characteristics in an undeformed state (i.e., before the housing 1 is joined and before any elastic deformation of the contact elements 9, 10 - see Figure 1). Fig. 12) along the extension direction 12, equal second heights 31 are formed. During the assembly of the housing 1, these second heights 31 are contacted by the first housing part 3 and successively deformed, so that the second heights 31 are reduced (see Fig. 13). The contact elements 9, 10 are under a preload in the deformed state.

[0086] Fig. Figure 14 shows a section of a second version of a housing 1 before the housing parts 3, 4, 7 are assembled in a side view in section. Fig. Figure 15 shows the section after Fig. 14 in the assembled state. The Fig. 14 and Fig. The 15 items are described together below. The explanations regarding the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig. 13 is referred.

[0087] The contact elements 9, 10 are arranged next to each other in the connection area 8 along a direction of extension 12 and are deformed relative to a height direction 16 during the connection of the housing parts 3, 4, 7.

[0088] Of two adjacent contact elements 9, 10, a first contact element 9 contacts only the first housing part 3 and a second contact element 10 contacts only the second housing part 4.

[0089] In addition to the (first) slots 11 arranged between the contact elements 9, 10, further (second) slots 11 are provided, which are arranged at the respective ends of the length 13 of the (first) slots 11 and extend transversely to them. These (second) slots 11 narrow, but do not sever, the transition between the contact element 9, 10 and the planar area 30 surrounding the contact element 9, 10.

[0090] The third housing part 7 extends in the connection area 8 along a direction 12 in a (central) plane 18. Of two adjacent contact elements 9, 10, a first contact element 9 is oriented from the central plane 18 towards the first housing part 3, and a second contact element 10 is oriented from the central plane 18 towards the second housing part 4. This means that these contact elements 9, 10 extend relative to the central plane 18 (first height 17) in opposite directions 16 to a second height 31 of equal magnitude.

[0091] The first contact elements 9 in each case exhibit in an undeformed state (i.e. before the assembly of the housing 1 and before elastic deformation of the contact elements 9, 10 - see Fig. 14) along the extension direction 12, equal second heights 31 are formed. During the assembly of the housing 1, these second heights 31 are contacted by the first housing part 3 and successively deformed, so that the second heights 31 are reduced (see Fig. 15). The same applies to the second contact elements 10.

[0092] In their undeformed state (i.e., before the housing 1 is assembled and before any elastic deformation of the contact elements 9, 10), the contact elements 9, 10 each have different second heights 31 along their extension direction 12. These different second heights 31 differ by 200% of the maximum distance 32 (between the greatest second height 31 and the first height 17). The contact elements 9, 10 extend in opposite directions 16 relative to the (central) plane 18 (first height 17) to a second height 31 of equal magnitude. In their deformed state, the contact elements 9, 10 are under preload.

[0093] The contact elements 9, 10 have a contact surface 19 with a structure 20 that contacts the respective housing part 3, 4. During elastic deformation of the contact element 9, 10, the structure 20 contacts the housing part 3, 4 and damages its housing part surface 21. The structure 20 has sharp edges 33 (edge ​​radius very small, adjacent surfaces of the edge 33 have an angle of approximately 100 degrees). The structure 20 is formed by the edges 33 of the contact element 9, 10 adjacent to the slot 11. In the undeformed state (i.e., before the housing 1 is assembled and before elastic deformation of the contact elements 9, 10), these edges 33 are oriented towards the housing part 3, 4, so that the edge 33 itself contacts the housing part 3, 4. The surfaces of the contact element 9, 10 adjacent to edge 33 extend at an angle of approximately50 degrees angle to a contacted housing part surface 21 of the housing part 3, 4.

[0094] In their undeformed state, the contact elements 9, 10 have a second height 31 that varies along their extension direction 12. Adjacent to the two slots 11 that define each contact element 9, 10, the contact elements 9, 10 each have a maximum second height 31 (maxima) and a minimum second height 31 (minimum) between these two maximum second heights 31 (maxima). The minimum second height 31 is greater than a first height 17 of the planar area 30.

[0095] The electrically conductive connection between the first housing part 3 and the second housing part 4 is (also) ensured by the third housing part 7. However, screws are also possible as connecting elements 26, which are used to connect the first housing part 3 to the second housing part 4 and to ensure the electrically conductive connection. Reference symbol list 1 (EMC) enclosure 2 electrical components 3 first housing part 4 second housing part 5 Sealing surface 6 volumes 7 third housing part 8 Connection area 9 first contact element 10 second contact element 11 slots 12. Direction of extension 13 Length 14 width 15 Total area 16 Altitude 17 first height 18 (Middle) Level 19 Contact area 20 Structure 21 Housing surface 22 electric motor 23 connection 24 Signal line 25 surroundings 26 Connecting element 27 Masse 28 Scope 29 width 30 area 31 second height 32 Distance 33 edge

Claims

[1] EMC housing (1) for an electrical component (2), comprising at least a first housing part (3) and a second housing part (4) which are connected to each other via a sealing surface (5) and together enclose a volume (6) of the housing (1) in a liquid-tight manner, wherein a plate-shaped third housing part (7) is arranged within the volume (6) between the first housing part (3) and the second housing part (4); wherein the third housing part (7) has a plurality of elastically deformable contact elements (9, 10) in at least one connection area (8) with at least one of the first housing part (3) and the second housing part (4) to form an electrically conductive connection between the housing parts (3, 4, 7); wherein, when the housing parts (3, 4, 7) are connected to the housing (1), the contact elements (9, 10) are elastically deformed by the housing part (3, 4) contacting the respective contact element (9, 10). [2] EMC housing (1) according to claim 1, wherein the majority of the contact elements (9, 10) are arranged next to each other in the connection area (8) and are separated from each other by at least one slot (11). [3] EMC housing (1) according to claim 2, wherein the contact elements (9, 10) are arranged side by side in the connection area (8) along a direction of extension (12) and the at least one slot (11) has a length (13) of 5 to 50 millimeters extending transversely to the direction of extension (12). [4] EMC housing (1) according to one of the preceding claims 2 and 3, wherein at least one of the contact elements (9, 10) between two slots (11) has a width (14) of 5 to 20 millimeters. [5] EMC housing (1) according to any one of the preceding claims 2 to 4, wherein the contact elements (9, 10) are defined by the length (13) of the slots (11) and width (14) of the contact elements (9, 10), wherein the contact elements (9, 10) comprise between 0.5% and 80% of a total area (15) of the third housing part (7). [6] EMC housing (1) according to one of the preceding claims, wherein the contact elements (9, 10) are arranged side by side in the connection area (8) along a direction of extension (12) and are deformed relative to a height direction (16) by the connection of the housing parts (3, 4, 7); wherein the contact elements (9, 10) in an undeformed state have the same or different heights (17) along the direction of extension (12). [7] EMC housing (1) according to one of the preceding claims, wherein of two adjacent contact elements (9, 10) a first contact element (9) contacts only the first housing part (3) and a second contact element (10) contacts only the second housing part (4). [8] EMC housing (1) according to one of the preceding claims, wherein the third housing part (7) extends in the connection area (8) along a direction of extension (12) in a median plane (18) and is oriented from two adjacent contact elements (9, 10) a first contact element (9) from the median plane (18) towards the first housing part (3) and a second contact element (10) from the median plane (18) towards the second housing part (4). [9] EMC housing (1) according to one of the preceding claims, wherein the contact elements (9, 10) are arranged side by side in the connection area (8) along a direction of extension (12) and are deformed relative to a height direction (16) by the connection of the housing parts (3, 4, 7); wherein at least one contact element (9, 10) has a height (17) varying along the direction of extension (12) in an undeformed state. [10] EMC housing (1) according to one of the preceding claims, wherein at least one contact element (9, 10) has a contact surface (19) with a structure (20) that contacts the respective housing part (3, 4), wherein the structure (20) contacts the housing part (3, 4) during elastic deformation of the contact element (9, 10) and damages its housing part surface (21). [11] EMC housing (1) according to one of the preceding claims, wherein the third housing part (7) is made of a metallic material. [12] Housing part (7) of an EMC housing (1) according to one of the preceding claims, wherein the housing part (7) is the third housing part (7). [13] Use of an EMC enclosure (1) according to any one of the preceding claims 1 to 11 for an inverter as an electrical component (2).

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