Electronic component

Abstract

The invention relates to an electronic assembly (1), comprising a housing (2), which has an interior space (3) and an opening (4) connecting the interior space (3) to an outer region (11) of the housing (2), further comprising an electrical and / or electronic device (5) arranged in the interior space (3) of the housing (2) and a pressure compensation element (6), said pressure compensation element (6) closing off the housing (2) in a gas-permeable and impermeable manner, the invention relates to an electronic assembly (1) for a motor vehicle, in particular a motor vehicle, in which an intermediate element (30) is arranged in the opening (4), the intermediate element (30) being connected to the housing (2) in a gas-tight and water-tight manner in the opening (4), an opening (31) being formed in the intermediate element (30), and a pressure compensation element (6) closing the opening (31) in the intermediate element (30) in a gas-permeable and non-permeable manner.

Description

Technical Field

[0001] The invention relates to an electronic component having the features of the preamble of independent claim 1 . Background Art

[0002] In motor vehicle technology, electrical and / or electronic devices, such as inverters, are arranged in housings in order to protect them from external loads, such as humidity, for example. If the electrical and / or electronic components, such as inverters, arranged in the housing are subjected to severe temperature changes, severe pressure changes can occur in the housing. In addition, in the case of height differences, severe changes in pressure can occur. In many use scenarios, a perforation is therefore provided in the housing, in which a pressure compensation element is arranged, which seals the perforation and thus the housing in an air-permeable and moisture-tight manner. The pressure in the housing can then be compensated for with respect to the ambient pressure by the pressure compensation element. Tightness problems or damage to components due to overpressure or negative pressure in the housing can thus be prevented. Summary of the invention

[0003] According to the invention, an electronic component is proposed. The electronic component comprises a housing having an inner cavity and a through-hole connecting the inner cavity to an outer area of ​​the housing. In addition, the electronic component comprises an electrical and / or electronic device arranged in the inner cavity of the housing, and a pressure compensation element, wherein the pressure compensation element closes the housing in an air-permeable and moisture-tight manner. According to the invention, an intermediate element is arranged in the through-hole, wherein the intermediate element is connected to the housing in the through-hole in an air-tight and water-tight manner, wherein an opening is formed in the intermediate element, wherein the pressure compensation element closes the opening in the intermediate element in an air-permeable and moisture-tight manner.

[0004] Advantages of the present invention.

[0005] Compared to the prior art, the electrical component according to the features of claim 1 has the advantage that corrosion in the area of ​​the opening in the housing can be prevented. The intermediate component serves as an adapter for the pressure compensation element and can be designed in such a way that a large-area seal can be achieved between the housing and the adapter. For example, compared to a simple sealing ring, the large-area seal prevents water intrusion and is less penetrated by water. Corrosion in the area of ​​the opening is thus prevented. The corrosion-prone housing, which is usually constructed of aluminum, is thus advantageously protected from corrosion. The corrosion stability of the interface of the housing relative to the pressure compensation element is thus improved. The device is more robust and has a longer service life. By manufacturing the seal relative to the corrosion-prone housing with the aid of the intermediate element 30, a simple pressure compensation element can be used. By using the intermediate element 30 as an adapter, this simple and compact pressure compensation element is adapted to the requirements for corrosion protection of the housing.

[0006] Further advantageous embodiments and developments of the invention are possible by means of the features specified in the dependent claims.

[0007] According to an advantageous embodiment, a sealing element is arranged between the housing and the intermediate element, wherein the housing is in direct contact with the sealing element at the housing contact surface at the aperture, wherein the intermediate element is in direct contact with the sealing element at the intermediate contact surface. The sealing element produces an advantageously good gas-tight and water-tight seal of the intermediate element relative to the housing.

[0008] According to an advantageous embodiment, it is provided that the housing contact surface has a cylindrical housing contact area and the intermediate contact surface has a cylindrical intermediate contact area, wherein the cylindrical area of ​​the sealing element extends cylindrically between the cylindrical housing contact area of ​​the housing and the cylindrical intermediate contact area of ​​the intermediate element. The cylindrical seal has, for example, a significantly longer sealing length than a simple sealing ring, which is used to seal a simple pressure compensation element. The connection between the housing and the intermediate element is thus advantageously protected against complete corrosive sealing penetration. Since the sealing element abuts over a large area not only on the housing but also on the intermediate part, no reservoir is present between the housing and the sealing element, in which liquid would collect and be difficult to dry out, as is usually the case with sealing rings, such as O-rings.

[0009] According to an advantageous embodiment, it is provided that the housing contact surface has an annular housing contact area and the intermediate contact surface has an annular intermediate contact area, wherein a flange is formed on the sealing element and extends between the annular housing contact area and the annular intermediate contact area. The sealing surface between the intermediate element and the housing is then further increased and the sealing penetration is further reduced.

[0010] According to an advantageous embodiment, it is provided that the collar of the sealing element projects from the cylindrical region of the sealing element.

[0011] According to an advantageous embodiment, it is provided that the sealing element is formed from an elastomer, thereby enabling an advantageously tight seal between the intermediate element and the housing.

[0012] According to an advantageous embodiment, a locking element, in particular a locking hook, is formed on the intermediate element and the intermediate element is inserted into the through-opening from the outer region of the housing and locked in the through-opening. The locking element holds the intermediate element in the through-opening. At the same time, the intermediate element can be pressed slightly against the housing by the locking element, for example with a slight elastic deformation of the sealing element, in particular the flange of the sealing element. The tightness between the housing and the intermediate element can thus be further improved.

[0013] According to an advantageous embodiment, it is provided that the intermediate element is made of a corrosion-resistant material, in particular plastic, or is coated with a corrosion-resistant material. This prevents corrosion at the opening of the intermediate element at which the pressure compensation element is arranged and at which, for example, only a simple sealing ring is responsible for the seal between the pressure compensation element and the intermediate element. The corrosion problem is transferred to the seal between the intermediate component and the housing.

[0014] According to an advantageous embodiment, it is provided that the intermediate element projects into the aperture.

[0015] According to an advantageous embodiment, it is provided that the housing is formed from aluminum. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Exemplary embodiments of the invention are shown in the drawings and are explained in more detail in the following description.

[0017] Figure 1 A cross section of an embodiment of an electronic component according to the invention is shown. DETAILED DESCRIPTION

[0018] Figure 1 A schematic cross section of an embodiment of an electronic assembly 1 according to the invention is shown. The electronic assembly 1 comprises a housing 2 and at least one electrical and / or electronic device 5 arranged in the housing 2. The electrical device 5 can be designed, for example, as an inverter or form a component of an inverter. In addition, the electronic assembly 1 comprises an intermediate element 30 and a pressure compensation element 6.

[0019] The housing 2 has an interior 3. An opening 4 is formed in the housing 2, which connects the interior 3 of the housing to an outer region 11 of the housing 2. An electrical device 5 is arranged in the interior 3 of the housing 2. The electrical device 5 is protected by the housing 2, for example, from external influences such as, for example, humidity surrounding the housing 2. In the present exemplary embodiment, the housing 2 is made of aluminum.

[0020] A sealing element 40 is arranged between the housing 2 and the intermediate element 30. The sealing element 40 seals the housing 2 in an airtight and watertight manner relative to the intermediate element 30. The intermediate element 30 protrudes from the outer region 11 of the housing 2 into the aperture. The intermediate element 30 is in particular cylindrical. Part is arranged in the opening 4.

[0021] The housing 2 is in direct contact with the sealing element 40 at the housing contact surface 22. The intermediate element 30 is in direct contact with the sealing element 40 at the intermediate contact surface 32. The housing contact surface 2 merely represents the surface of the housing 2 at which the housing 2 is in direct contact with the sealing element 40. The intermediate contact surface 32 merely represents the surface of the intermediate element 30 at which the intermediate element 30 is in direct contact with the sealing element 40. In the embodiment shown in the figure, the housing contact surface 22 has a cylindrical housing contact area 23 and an annular housing contact area 24. The intermediate contact surface 32 has a cylindrical intermediate contact area 33 and an annular intermediate contact area 34.

[0022] As shown in the figure, the sealing element 40 has a cylindrical region 43 and a flange 44. The sealing element 40 is cylindrically constructed at the cylindrical region. The intermediate element 30 has a cylindrical outer contour. At the cylindrical outer contour, the intermediate element 30 is in direct contact with the cylindrical region 43 of the sealing element. The opening 4 of the housing 2 has a cylindrical inner contour. At the cylindrical inner contour, the housing 2 is in direct contact with the cylindrical region 43 of the sealing element 40. The cylindrical region 43 of the sealing element 40 is arranged between the cylindrical intermediate contact region 33 and the cylindrical housing contact region 23 of the housing 2. The cylindrical region 43 of the sealing element 40 completely fills the space between the cylindrical intermediate contact region 33 and the cylindrical housing contact region 23 of the housing 2. The flange 44 of the sealing element 40 protrudes radially outward from the cylindrical region 43 of the sealing element 40. The sealing element 40 is constructed in one piece. The sealing element 40 is continuously constructed of the same material. The sealing element 40 is constructed, for example, from an elastomer. The flange 44 is arranged on the outside of the housing 2. Starting from the flange 44, the cylindrical region 43 protrudes into the opening 4 in the direction of the inner chamber 3 of the housing 2. The flange is annularly constructed. The flange 44 is arranged between the annular housing contact region 24 and the annular intermediate contact region 34.

[0023] The intermediate element 30 is made of a corrosion-resistant material. The intermediate element 30 is made of plastic, for example. However, the intermediate element 30 can also be coated with a corrosion-resistant material.

[0024] An opening 31 is formed in the intermediate element 30, through which the interior 3 of the housing 2 is connected to the exterior region 11 of the housing 2. The opening 31 is arranged, for example, centrally. The opening 31 extends, for example, conically from the exterior region 11 toward the interior 3 of the housing 2. The opening 3 is closed, in particular, from the exterior region 11 of the housing 2 by the pressure compensation element 6.

[0025] A locking element 35 is formed on the intermediate element 30. The locking element 35 is arranged at the end of the intermediate element 30 facing away from the pressure compensation element 6. The locking element 35 protrudes into the interior 3 of the housing. The locking element 35 holds the intermediate element 30 in the through-opening 4. The locking element 35 surrounds the inner wall of the housing 2 surrounding the through-opening 4, in particular by means of a latching projection. The intermediate element 30 is inserted into the through-opening 4 from the outer region 11 of the housing 2 and is locked in the through-opening 4.

[0026] The pressure in the housing 2 can change greatly, for example, due to temperature fluctuations. For pressure compensation, the electronic component 1 comprises a pressure compensation element 6. The pressure compensation element 6 closes the opening 31 in the intermediate element 30 in an air-permeable and moisture-tight manner. The pressure compensation element 6 closes the housing 2 in an air-permeable and moisture-tight manner. Pressure changes in the housing 2 can thus be advantageously compensated by the pressure compensation element 6, and the electrical and / or electronic device 5 can simultaneously be protected, for example, from humidity by the moisture-tight pressure compensation element 6. In this case, the pressure compensation element 6 can comprise, for example, one or more microporous membranes, such as, for example, The pressure compensation element 6 can be pressed into the opening 31 of the intermediate element 30, for example, or can be clamped, for example, by means of a latching hook. However, the pressure compensation element 6 can also be adhesively bonded to the intermediate element 30. As in the exemplary embodiment shown in the figures, a sealing ring can also be arranged between the pressure compensation element 6 and the intermediate element 30, for example, which seals the pressure compensation element 6 relative to the intermediate element 30.

[0027] It goes without saying that further exemplary embodiments and combinations of the exemplary embodiments shown are possible.

Claims

1. An electronic component (1) comprising a housing (2) having an interior (3) and an opening (4) connecting the interior (3) to an exterior region (11) of the housing (2), the electronic component further comprising at least one electrical and / or electronic device (5) arranged in the interior (3) of the housing (2), and a pressure compensation element (6), wherein: The pressure compensation element (6) seals the housing (2) in an air-permeable and moisture-tight manner. It is characterized in that an intermediate element (30) is arranged in the through-opening (4), wherein the intermediate element (30) is connected to the housing (2) in the through-opening (4) in an airtight and watertight manner, wherein an opening (31) is formed in the intermediate element (30), and wherein the pressure compensation element (6) closes the opening (31) in the intermediate element (30) in an air-permeable and moisture-tight manner.

2. The electronic component according to claim 1, characterized in that A sealing element (40) is arranged between the housing (2) and the intermediate element (30), wherein the housing (2) is in direct contact with the sealing element (40) at the housing contact surface (22) at the aperture (4), and wherein the intermediate element (30) is in direct contact with the sealing element (40) at the intermediate contact surface (32).

3. The electronic component according to claim 2, characterized in that The housing contact surface (22) has a cylindrical housing contact area (23) and the intermediate contact surface (32) has a cylindrical intermediate contact area (33), wherein the cylindrical area (43) of the sealing element (40) extends cylindrically between the cylindrical housing contact area (23) of the housing (2) and the cylindrical intermediate contact area (33) of the intermediate element (30).

4. The electronic component according to any one of claims 2 or 3, characterized in that: The housing contact surface (22) has an annular housing contact area (24) and the intermediate contact surface (32) has an annular intermediate contact area (34), wherein a collar (44) is formed on the sealing element (40) and extends between the annular housing contact area (24) and the annular intermediate contact area (34).

5. An electronic component according to any one of the preceding claims, characterized in that The flange (44) of the sealing element (40) protrudes from the cylindrical region (43) of the sealing element (40).

6. An electronic component according to any one of the preceding claims, characterized in that The sealing element (40) is made of an elastomer.

7. An electronic component according to any one of the preceding claims, characterized in that A locking element (35), in particular a locking hook, is formed on the intermediate element (30), and the intermediate element (30) is inserted into the aperture (4) from an outer region (11) of the housing (2) and is locked in the aperture (4).

8. An electronic component according to any one of the preceding claims, characterized in that The intermediate element (30) is made of a corrosion-resistant material, in particular plastic, or is coated with a corrosion-resistant material.

9. An electronic component according to any one of the preceding claims, characterized in that The intermediate element (30) projects into the through-opening (4).

10. An electronic component according to any one of the preceding claims, characterized in that The housing (2) is constructed from aluminum.

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