WO2014108119A1 - Module électronique comprenant un boîtier pourvu d'un élément d'équilibrage de la pression entre l'intérieur du boîtier et l'extérieur - Google Patents

Module électronique comprenant un boîtier pourvu d'un élément d'équilibrage de la pression entre l'intérieur du boîtier et l'extérieur Download PDF

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Publication number
WO2014108119A1
WO2014108119A1 PCT/DE2013/200306 DE2013200306W WO2014108119A1 WO 2014108119 A1 WO2014108119 A1 WO 2014108119A1 DE 2013200306 W DE2013200306 W DE 2013200306W WO 2014108119 A1 WO2014108119 A1 WO 2014108119A1
Authority
WO
WIPO (PCT)
Prior art keywords
opening
pressure
housing
compensation element
pressure compensation
Prior art date
Application number
PCT/DE2013/200306
Other languages
German (de)
English (en)
Inventor
Bert Lindner
Mario Geigenfeind
Heinrich Probst
Thomas GÖTZ
Tobias Tyroller
Original Assignee
Continental Automotive Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Priority to DE112013006411.1T priority Critical patent/DE112013006411A5/de
Publication of WO2014108119A1 publication Critical patent/WO2014108119A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0213—Venting apertures; Constructional details thereof
    • H05K5/0215—Venting apertures; Constructional details thereof with semi-permeable membranes attached to casings

Definitions

  • Electronic assembly having a housing with a pressure equalization element between the housing interior and the environment
  • the invention relates to an electronic assembly having a housing with a pressure compensation element between the housing interior and the environment according to the preamble of claim 1.
  • a pressure compensation element in the housing, so that the pressure difference between the housing interior and the environment is not so large that moisture is sucked by the pressure difference from the environment into the housing interior.
  • the temperature differences are very high and the potential pressure differences not negligible.
  • a pressure compensation element is present, which is formed for example by an air-permeable, but moisture-impermeable tissue membrane, for example.
  • Goretex ® Goretex is a trademark of the company W. L. Gore & Associates, Inc. This membrane is usually adhered to the outside or inside of an opening in the housing and allows pressure equalization through this opening without moisture being able to penetrate through the opening.
  • a pressure compensating screw with a tube membrane for electronics housing in which a plurality of star-shaped arranged around a tube membrane pressure inlet openings are provided to the environment and inside the tube membrane, the opening into the interior of the housing is provided.
  • Such an arrangement itself precedes a self-supporting tubular membrane of porous material and is unsuitable for a thin-membranous membrane.
  • the jet would always impinge directly on the tube membrane.
  • the tube membrane is arranged in the chamber, which has a larger cross section with respect to the cross section of the openings towards the environment.
  • EP 1 630 769 B1 discloses a label for covering gas exchange openings with a plurality of openings to the pressure inlet to the environment, wherein the label is additionally glued to the edge around the gas exchange opening.
  • the channels for the gas exchange opening in each case have a constant identical cross-section and open above the gas exchange opening in a recess which opposite the flow direction for liquids radiated through one of the openings has a larger cross-section than the channels leading thereto.
  • the object of the present invention is therefore to present an electronic assembly with a pressure compensation element, in which the pressure compensation element is even better protected against such loads.
  • the housing thus initially has a pressure feed channel with a first opening to the interior of the housing.
  • the pressure supply channel can also have a different function in addition to the function of the pressure compensation, for example, in pressure sensors and the supply of pressure to the arranged inside the housing pressure sensor serve.
  • the pressure feed channel has hitherto been designed as a bore in the housing in the prior art.
  • This opening into the housing interior is air-permeable, but moisture-impermeable covered by the pressure-equalizing element, so for example protected by gluing such a membrane on the inside or outside of this opening.
  • each pressure supply channel of course has a second opening from the pressure supply channel to the environment.
  • the pressure compensation element is arranged in a pressure feed channel and to which the pressure supply channel has at least two openings to the environment, so that a water jet entering to an opening to the other opening can escape back to the environment and not to a complete blockage of the opening to the environment and This can lead to the blockage of the pressure compensation element.
  • An essential idea of the invention is that the pressure feed channel has a reduced cross section transverse to the flow direction of liquids radiated through the openings in an area spaced from the openings to the environment and the inner opening is arranged in this area with reduced cross section, thereby physically seen a so-called Venturi element arises. It will be at the 1.
  • the first opening to this flow direction is preferably arranged at an angle other than zero or 180 degrees, preferably at least approximately at right angles (90 degrees).
  • Opening arranged pressure compensation element is particularly effectively protected by the mechanical influence of the water jet.
  • the position of the first opening in the pressure feed channel is arranged so that a water jet can not impinge directly on the first opening either on entry through the second or through the third opening.
  • a water jet can not impinge directly on the first opening either on entry through the second or through the third opening.
  • the pressure feed channel is at least substantially rectilinear, that is, the flow direction of a radiant water jet through the one opening to the environment is identical or at an angle smaller than 45 ° to the flow direction of the water jet flowing through the other opening.
  • a projection of the second opening in the plane of the third opening overlaps each other at least partially, so you can see through the pressure supply channel.
  • the pressure supply channel in a straight line and to provide openings on both sides.
  • the pressure feed channel then has at least one bend or kink, but also there means for deflecting a water jet from the second to the third opening and vice versa and the first opening spaced from the center of the bend or the kink is arranged.
  • the means for deflecting the water jet may, for example, be a bend with a sufficiently large bending radius or a kind of deflection surface or deflection surface, which is preferably perpendicular to the bisecting line between the flow direction in the second opening and the flow direction in the third opening. If, for example, the flow direction s between the second and third openings are arranged at an angle of 90 ° to one another, such a deflection surface would be directed at 45 ° to each of these two directions of flow.
  • Figure 1 1. preferred embodiment.
  • Figure 5 Sketch of an alternative means for deflecting the water jet
  • Figure 7 Sketch of a preferred reduction of the cross section 3.5
  • FIG. 9 top view of the exemplary embodiment according to FIG. 8
  • the housing interior is denoted by 1, with 3 of the pressure supply channel with 2 the pressure compensation element and with 4 the housing wall to the pressure supply channel third
  • the housing has a pressure feed channel (3) with a first opening (3.1) to the interior of the housing, said opening (3.1) through the pressure compensation element (2) permeable to air, but is covered moisture impermeable. It is irrelevant whether the pressure compensation element 2 is arranged in the housing interior 1 or within the pressure supply channel 3.
  • the pressure compensation element 2 is for example a membrane which is glued to the edge of the opening 3.1.
  • the pressure compensation element 2 is permeable to air and thus allows an air flow A, through which a pressure equalization between the environment and the housing interior 1 is possible.
  • the practically occurring pressure differences in the air pressure are relatively low compared to the pressure which can arise on the pressure compensation element 2, when water is injected into one of the openings 3.2 and 3.3 in the pressure supply channel by means of a pressure jet.
  • Figure 1 shows a first preferred embodiment in which the first opening (3.1) to this flow direction (W) at an angle other than zero or 180 degrees, preferably at least approximately at right angles (90 degrees) is arranged.
  • the position of the first opening (3.1) is also arranged in the pressure supply channel 3 so that a water jet can not impinge directly on the pressure compensation element 2 either on entry through the second or through the third opening (3.2, 3.3). It is understood as direct if the beam could strike without any distraction.
  • Each deflection or reflection through the wall of the housing around the pressure feed channel absorbs part of the energy of the jet and protects the pressure compensation element 2.
  • the pressure feed channel 3 is arranged in a straight line and completely overlaps a projection of the second opening into the plane of the third opening.
  • a water jet which penetrates through one of the openings (3.2, 3.3), also leaves the pressure feed channel 3 again directly through the opposite opening, so that no or only a significantly reduced tendency to build up a dynamic pressure is to be expected in the opening 3.1.
  • the pressure compensation element 2 is therefore very well protected.
  • FIG. 1 nevertheless makes it possible to use the particularly preferred Venturi effect, according to FIG. 2, in a region spaced from the second and third openings, a reduced cross section (3.5) transversely to the flow direction (W) of FIG Having liquids radiated by the second or one of the third openings (3.2, 3.3) and the first opening (3.1) is arranged in this area with a reduced cross-section (3.5).
  • FIG. 2 in accordance with FIG. 1, a reduction purely in the Y direction is shown.
  • Figure 3 shows a different design, which also uses the Venturi effect, but also by reducing the cross section 3.5 on the side facing the opening 3.1 side of the pressure supply channel 3 additional protection of the opening 3.1 and the pressure compensation element 2 against direct impingement of the beam allows.
  • FIG. 7 shows yet another sketch of an embodiment of the reduced cross section 3.5 in both the X and Y directions using the Venturi effect.
  • FIG. 4 now shows a further embodiment in which the openings 3.2 and 3.3 are again aligned in the same direction on opposite sides of a straight tube but are arranged at an angle other than zero or 180 degrees, preferably at least approximately at right angles (90 degrees).
  • the flow direction (W) for liquids radiated through one of the openings in the region of the second opening 3.2 deviates from the flow direction in the region of the third opening 3.3.
  • This exemplary embodiment thus does not allow a straight-line water flow as in FIG. 1.
  • the pressure feed channel 3 thus has at least one bend or kink.
  • the first opening (3.1) is arranged at a distance from the center of the bend or the bend.
  • a kind of deflection surface or deflection surface 3.4 is provided as such means for deflecting the water jet, which is at least approximately perpendicular to the bisector of that angle which through the flow direction W in the region of the second opening 3.2 to the flow direction W in the region 3. opening 3.3 is clamped.
  • the deflection surface 3.4 would be arranged at an angle of 45 °.
  • a curvature with a correspondingly large bending radius can be provided in this area, as indicated in sketchy way in Figure 5.
  • the aim of these measures is in each case the deflection of the water jet without excessive increase of the dynamic pressure before the 1st Opening 3.1. Accordingly, this is 1.
  • Opening 3.1 also preferably not provided in the region of these means for deflecting the water jet.
  • FIG. 6A and 6B outline what is to be understood by a projection of the second opening into the plane of the third opening, wherein a definition of a pressure feed channel 3 is defined as at least substantially rectilinear, which at least partially overlaps such a projection, such as by the attenuated Surfaces in Figure 6A and 6b to be shown.
  • FIGS 8 and 9 now outline yet another practical embodiment of the implementation of the invention in an existing assembly in which the operation of the invention could be tested in the originally provided pressure feed channel 3 adjacent to the opening 3.2 through a further hole 3.3.
  • Opening angle and distance of the opening 3.3 with respect to the position of the first Opening 3.1 are limited here because of the spatial requirements of the assembly and since not optimal, thereby the opening 3.3 is still a direct irradiation of the opening 3.1 is possible.
  • a more spaced arrangement would be preferable, but was not feasible here because of the formations in the housing of the assembly.
  • this embodiment also shows the basic idea of the invention and the derivation of a water jet flowing through the opening 3.2 through the third opening 3.3 and also the Venturi effect explained above is used and a corresponding area with a reduced cross-section is used, although this is shown in FIGS nciht is sketched closer.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Nozzles (AREA)

Abstract

L'invention concerne un module électronique comprenant un boîtier pourvu d'un élément d'équilibrage de la pression (2) entre l'intérieur (1) du boîtier et l'extérieur. Le boîtier comporte un canal d'alimentation en pression (3) doté d'une première ouverture (3.1) en direction de l'intérieur du boîtier, ladite ouverture (3.1) étant recouverte par l'élément d'équilibrage de la pression (2) de manière perméable à l'air mais imperméable à l'humidité. Le canal d'alimentation en pression comporte en outre naturellement une deuxième ouverture (3.2) située entre le canal d'alimentation en pression (3) et l'extérieur. Mais précisément dans le cas des modules électroniques utilisés dans la technologie de l'automobile, il n'est pas exclu qu'un jet d'eau sous pression atteigne une ouverture de ce type. En raison de la différence relativement minime par rapport à la pression atmosphérique, ce jet d'eau sous pression risque de produire une pression dynamique importante sur l'élément d'équilibrage de la pression (2). L'invention vise à éviter ce risque. À cet effet, le canal d'alimentation en pression (3) présente au moins une autre ouverture, donc une troisième ouverture (3.3), séparée de la deuxième ouverture et débouchant sur l'extérieur, et la première ouverture (3.1) est agencée à distance à la fois de la deuxième et de la troisième ouverture (3.2, 3.3). En outre, on utilise l'effet venturi dans le canal d'alimentation en pression (3), en ménageant la première ouverture (3.1) dans une zone à section transversale réduite.
PCT/DE2013/200306 2013-01-11 2013-11-19 Module électronique comprenant un boîtier pourvu d'un élément d'équilibrage de la pression entre l'intérieur du boîtier et l'extérieur WO2014108119A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112013006411.1T DE112013006411A5 (de) 2013-01-11 2013-11-19 Elektronische Baugruppe mit einem Gehäuse mit einem Druckausgleichselement zwischen dem Gehäuseinneren und der Umgebung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013100257.9A DE102013100257A1 (de) 2013-01-11 2013-01-11 Elektronische Baugruppe mit einem Gehäuse mit einem Druckausgleichselement zwischen dem Gehäuseinneren und der Umgebung
DE102013100257.9 2013-01-11

Publications (1)

Publication Number Publication Date
WO2014108119A1 true WO2014108119A1 (fr) 2014-07-17

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PCT/DE2013/200306 WO2014108119A1 (fr) 2013-01-11 2013-11-19 Module électronique comprenant un boîtier pourvu d'un élément d'équilibrage de la pression entre l'intérieur du boîtier et l'extérieur

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DE (2) DE102013100257A1 (fr)
WO (1) WO2014108119A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105072846A (zh) * 2015-07-21 2015-11-18 合肥远诚信息科技有限公司 一种电子产品的防水保护装置
EP3288354A1 (fr) * 2016-08-23 2018-02-28 Alps Electric Co., Ltd. Enceinte étanche à l'eau

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015214680A1 (de) 2015-07-31 2017-02-02 Robert Bosch Gmbh Elektronische Baugruppe
DE102015214923B4 (de) * 2015-08-05 2019-02-14 Continental Automotive Gmbh Druckausgleichselement und Gehäuse mit einem solchen
EP3250014B1 (fr) * 2016-05-24 2019-12-18 Veoneer Sweden AB Boîtier pour composants électroniques
DE102017200306A1 (de) * 2017-01-10 2018-07-12 Continental Automotive Gmbh Elektronikbaugruppe mit einem Gehäuse und einem Druckausgleichskanal
DE102017208590B4 (de) * 2017-05-22 2021-12-16 Vitesco Technologies Germany Gmbh Vorrichtung zum Druckausgleich eines Gehäuses
DE102017119982A1 (de) * 2017-08-31 2019-02-28 R. Stahl Schaltgeräte GmbH Gehäuse der Schutzart druckfeste Kapselung und Herstellverfahren für dieses
DE102018103747A1 (de) * 2018-02-20 2019-08-22 Volkswagen Ag Vorrichtung mit einem Druckausgleichselement sowie Verfahren zur Herstellung einer Komponente der Vorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3817227A1 (de) * 1987-03-05 1989-11-23 Bosch Gmbh Robert Druckausgleichselement fuer ein elektrisches schaltgeraet
EP0831572A1 (fr) * 1996-09-18 1998-03-25 Nitto Denko Corporation Organe de dégazage
US6147298A (en) * 1998-12-08 2000-11-14 Egs Electrical Group Llc Breather assembly for electrical enclosures
DE202008005548U1 (de) 2008-04-14 2008-07-24 Hidde, Axel R., Dr. Ing. Druckausgleichs-Verschraubung mit Rohrmembran und einstellbarem Volumenstrom
EP1955901A1 (fr) * 2005-11-17 2008-08-13 Nitto Denko Corporation Élément d'aération
EP1630769B1 (fr) 2004-08-23 2008-10-15 Schreiner Group GmbH & Co. KG Etiquette pour couvrir des ouvertures d'échange de gaz

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3817227A1 (de) * 1987-03-05 1989-11-23 Bosch Gmbh Robert Druckausgleichselement fuer ein elektrisches schaltgeraet
EP0831572A1 (fr) * 1996-09-18 1998-03-25 Nitto Denko Corporation Organe de dégazage
US6147298A (en) * 1998-12-08 2000-11-14 Egs Electrical Group Llc Breather assembly for electrical enclosures
EP1630769B1 (fr) 2004-08-23 2008-10-15 Schreiner Group GmbH & Co. KG Etiquette pour couvrir des ouvertures d'échange de gaz
EP1955901A1 (fr) * 2005-11-17 2008-08-13 Nitto Denko Corporation Élément d'aération
DE202008005548U1 (de) 2008-04-14 2008-07-24 Hidde, Axel R., Dr. Ing. Druckausgleichs-Verschraubung mit Rohrmembran und einstellbarem Volumenstrom

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105072846A (zh) * 2015-07-21 2015-11-18 合肥远诚信息科技有限公司 一种电子产品的防水保护装置
EP3288354A1 (fr) * 2016-08-23 2018-02-28 Alps Electric Co., Ltd. Enceinte étanche à l'eau
JP2018032691A (ja) * 2016-08-23 2018-03-01 アルプス電気株式会社 防水構造筐体
CN107770984A (zh) * 2016-08-23 2018-03-06 阿尔卑斯电气株式会社 防水结构框体
US10136717B2 (en) 2016-08-23 2018-11-27 Alps Electric Co., Ltd. Waterproof enclosure
CN107770984B (zh) * 2016-08-23 2020-02-07 阿尔卑斯阿尔派株式会社 防水结构框体

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DE112013006411A5 (de) 2015-09-17
DE102013100257A1 (de) 2014-07-17

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