WO2016096421A2 - Protective device for a pressure equalizing element - Google Patents
Protective device for a pressure equalizing element Download PDFInfo
- Publication number
- WO2016096421A2 WO2016096421A2 PCT/EP2015/078304 EP2015078304W WO2016096421A2 WO 2016096421 A2 WO2016096421 A2 WO 2016096421A2 EP 2015078304 W EP2015078304 W EP 2015078304W WO 2016096421 A2 WO2016096421 A2 WO 2016096421A2
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- WIPO (PCT)
- Prior art keywords
- pressure compensation
- compensation element
- housing
- protection device
- pressure
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
Definitions
- the invention relates to a protective device for a pressure compensation element on the housing of a control device of an electric machine according to the preamble of claim 1.
- Such protected against splashing water and other moisture penetrating and correspondingly sealed housing of a control unit needs to equalize pressure between ambient air and the housing interior a pressure compensation element, which on the one hand is permeable to air and on the other hand prevents the ingress of spray or moisture into the housing interior.
- a pressure compensation element should also have a certain robustness in an electric machine used in a motor vehicle, so that damage to the pressure compensation element due to high-pressure water or other mechanical influences can be excluded as reliably as possible. Disclosure of the invention
- the electric machine according to the invention with the features of claim 1 has the advantage that as a pressure compensation element, an element can be used, which itself has a very simple structure and no special stability criteria must meet.
- the pressure compensation element is covered by a protective device which is attached to the housing of the control unit, so that thus the required mechanical protection against damage to the pressure compensation element is ensured.
- the pressure compensation element itself can be designed and constructed so that it optimally fulfills the pressure compensation function, since the required mechanical stability and protection against external damage are taken over by the protective device mentioned. This makes it possible to use inexpensive conventional pressure compensation elements for pressure equalization on the housing of a control unit of an electric machine.
- the pressure compensation element is preferably located on the housing cover of the controller in a recess, whereby a space-saving attachment of the pressure compensation element with associated protection device is possible.
- water drainage channels on the housing cover adjacent to the pressure compensation element, thereby ensuring that water accumulating in the region of the pressure compensation element is purposefully discharged.
- the water drainage channels can be designed in their orientation and surface finish so that a quick drainage of water is ensured.
- Particularly smooth surfaces or water-repellent surfaces are particularly advantageous in the area of the water drainage channels. This ensures that the pressure compensation function of the pressure compensation element is not affected as much as possible by moisture or water.
- five water drainage channels are provided, which are aligned in a star shape of the pressure compensation element at preferably equal angular intervals. This ensures that with a vertical orientation of the housing cover from at least two gutters water is discharged from the region of the pressure compensation element down.
- at least four water gutters which are aligned at an angular distance of 90 ° to each other, is however, merely ensures that water can be discharged downwards from at least one water drainage channel.
- the use of an additional water drainage channel, so a total of five water drainage channels thus significantly improves the ability to drain water as quickly as possible from the area of the pressure compensation element.
- the protective device which protects the pressure compensation element from mechanical loading and in particular from damage, is preferably attached to a cover cover unit which engages over the housing cover.
- This cover unit can both secure the housing cover on the electric machine and protect against damage to critical areas as well as covering the housing cover mounted pressure compensation element protectively.
- the housing cover and the cover unit can be designed as plastic parts, wherein the cover unit can be made of a particularly durable plastic material. This gives a high mechanical stability for the cover and a correspondingly high mechanical protection for the pressure compensation element.
- the attached to the cover unit protection device can very advantageously have a projecting in the direction of the pressure compensation element annular edge, which has a larger circumference than the pressure compensation element.
- the protective device thus engages with a protective edge of the pressure compensation element, so that there is an optimal all-round mechanical protection and protection against high-pressure water spray for the pressure compensation element.
- the edge of the protection device may have recesses that serve as water drainage openings.
- the edge of the protective device can extend very far in the direction of the housing cover, as on the recesses in the edge continues to ensure good drainage.
- an improved mechanical protection for the covered by the protection pressure compensation element is achieved.
- the recesses in the edge of the protective device are preferably offset relative to the star-shaped water drainage channels aligned.
- the recesses are thus aligned not with the water drainage channels, so that even from outside accumulating splash water can not get directly to the pressure equalization element via the water drainage channels.
- the present invention protected pressure compensation element can be easily formed as a disk-shaped element with a vapor diffusion-open membrane, which can be glued to the housing cover, welded or otherwise connected inextricably. Vapor permeable membranes have long been known, although they are vapor permeable but not permeable to water. Such a disc-shaped element as a pressure compensation element can be attached with very simple means on the housing cover of a control unit and requires little space.
- FIG. 2 shows a housing of a control device of an electrical machine, which housing is closed off with a housing cover,
- FIG. 3 shows the underside of a cover unit which can be placed over the housing cover shown in FIG. 2, FIG.
- FIG. 4 shows a section of the housing cover of FIG. 2 with attached cover unit
- Figure 5 is a sectional view taken along the section plane A-A of Figure 4.
- FIG. 6 shows the underside of a protective device shown in section in FIG.
- the electric machine 1 shown in FIG. 1 has a stator housing 2 in which the stator and the rotor (not visible here) are enclosed. On the shaft of the rotor, a pulley 3 is mounted for torque transmission. At the pulley 3 opposite side of the electric machine 1 is located in a housing 4, a control unit 5 with its electronic components.
- the housing 4 is closed by a housing cover 8 frontally, which is held by means of a cover 12 on the housing 4.
- the cover unit 12 engages over the housing cover 8 at its peripheral edge.
- FIG 2 the plan view is shown on the housing cover 8, which is part of a control unit 5 and the housing interior is watertight.
- a recess is formed, in which a pressure compensation element 9 rests.
- the pressure compensation element 9 is essentially formed by a vapor diffusion open membrane 10, which covers a not visible here pressure equalization opening in the housing cover 8.
- FIG. 3 now shows the underside of the cover unit 12, which has a protective device 14 attached to a web 13.
- the cover unit 12 is designed so that it covers the pressure compensation element 9 with the protective device 14 protectively when the cover unit 12 is placed with its visible in Figure 3 underside on the device cover 8 of Figure 2.
- the protective device 14 then covers the pressure compensation element 9 in such a way that its membrane 10 is protected against mechanical influences and in particular against high-pressure water.
- the protection device 14 but does not close the pressure compensation element 9 from airtight, but it allows that in the region of the pressure compensation element 9 accumulating water can flow smoothly from this.
- a total of five star-shaped water drainage channels 15 are provided on the housing cover 8, which are more clearly visible in the enlarged view of FIG.
- the cover unit 12 shown in Figure 3 has a peripheral edge 16 with fastening tabs 17, with which the cover unit 12 is fastened to the control unit 5.
- the enlarged view of Figure 4 shows the area of the control unit 5 of Figure 2, in which the pressure compensation element 9 is located, which is here, however, covered by the cover unit 12.
- the cover unit 12 here is a part of the strut 13 of Figure 3 can be seen, which carries the cap-shaped guard 14.
- pressure compensation element 9 Directly below the protection device 14 is not shown here pressure compensation element 9 in a recess of the housing cover 8. From the recess 18, which can be seen in Figure 5, protrude at equal angular intervals star-shaped Wasserablaufrinnen 15, thus from the recess 18 possibly accumulating water over the housing cover 8 can be removed.
- FIG. 5 the sectional view AA of FIG. 4 is shown enlarged, but without the strut 13 of the cover unit 12.
- the protective device 14 designed as a covering cap has an annular edge 19 projecting in the direction of the recess 18, reducing the pressure compensation element 9 in the recess 18 slightly Surrounds the distance at its peripheral edge.
- the edge 19 of the protection device 14 has recesses 20, which favor an outflow of any penetrated water in the region of the pressure compensation element 9 to the outside via the water drainage channels 15.
- the pressure compensation element 9 inserted in the recess 18 consists essentially of a vapor diffusion open membrane 10 which covers a pressure equalization opening 22 leading to the housing interior 21.
- the pressure compensation element 9 is glued in the illustrated embodiment in the recess 18 with the housing cover 8, whereby a splash-proof completion in the region of the pressure compensation opening 22 is.
- FIG. 6 shows the underside of the protective device 14 shown in section in FIG. 5 with the edge 19 having recesses 20.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention relates to a protective device for a pressure equalizing element (9) mounted on the housing (4) of a controller (5) of an electrical machine (1) for equalizing the pressure between the ambient pressure and the pressure in the housing interior (21) of the controller (5), said pressure equalizing element (9) covering a pressure equalizing opening (22) provided in the housing cover (8) of the controller (5), and a protective device (14) covering the pressure equalizing element (9) being fastened to the housing (4) of the controller (5).
Description
Beschreibung description
Titel title
Schutzvorrichtung für ein Druckausgleichselement Protection device for a pressure compensation element
Die Erfindung betrifft eine Schutzvorrichtung für ein Druckausgleichselement am Gehäuse eines Steuergeräts einer elektrischen Maschine nach dem Oberbegriff des Anspruchs 1. The invention relates to a protective device for a pressure compensation element on the housing of a control device of an electric machine according to the preamble of claim 1.
Stand der Technik State of the art
Elektrische Maschinen, die in Kraftfahrzeugen als Generatoren und/oder Antriebsmotoren eingesetzt werden, sind häufig der Beaufschlagung mit Spritzwasser ausgesetzt, weshalb besonders feuchtigkeitsempfindliche Bereiche der elektrischen Maschinen gegen das Eindringen von Wasser oder Feuchtigkeit geschützt sein müssen. Einen besonders gefährdeten Bereich stellt das Steuergerät einer elektrischen Maschine dar, weshalb das Steuergerät möglichst in einem völlig dicht abgeschlossenen Gehäuse untergebracht sein sollte. Electrical machines that are used in motor vehicles as generators and / or drive motors are often exposed to the application of water spray, which is why particularly moisture-sensitive areas of electrical machines must be protected against the ingress of water or moisture. A particularly endangered area is the control unit of an electrical machine, which is why the control unit should be housed as possible in a completely sealed housing.
Ein derart gegen Spritzwasser und sonstige eindringende Feuchtigkeit geschütztes und entsprechend abgedichtetes Gehäuse eines Steuergeräts benötigt zum Druckausgleich zwischen Umgebungsluft und dem Gehäuseinneren ein Druckausgleichselement, welches einerseits luftdurchlässig ist und andererseits das Eindringen von Spritzwasser oder Feuchtigkeit in das Gehäuseinnere verhindert. Ein solches Druckausgleichselement sollte bei einer in einem Kraftfahrzeug eingesetzten elektrischen Maschine auch eine gewisse Robustheit aufweisen, damit Beschädigungen am Druckausgleichselement durch Hochdruckwasser oder andere mechanische Einflüsse möglichst sicher ausgeschlossen werden können.
Offenbarung der Erfindung Such protected against splashing water and other moisture penetrating and correspondingly sealed housing of a control unit needs to equalize pressure between ambient air and the housing interior a pressure compensation element, which on the one hand is permeable to air and on the other hand prevents the ingress of spray or moisture into the housing interior. Such a pressure compensation element should also have a certain robustness in an electric machine used in a motor vehicle, so that damage to the pressure compensation element due to high-pressure water or other mechanical influences can be excluded as reliably as possible. Disclosure of the invention
Die erfindungsgemäße elektrische Maschine mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass als Druckausgleichselement ein Element verwendet werden kann, welches selbst einen sehr einfachen Aufbau hat und keine besonderen Stabilitätskriterien erfüllen muss. Das Druckausgleichselement wird von einer Schutzvorrichtung, die am Gehäuse des Steuergeräts befestigt ist, überdeckt, sodass damit der erforderliche mechanische Schutz vor Beschädigungen am Druckausgleichselement gewährleistet ist. Das Druckausgleichselement selbst kann so gestaltet und aufgebaut sein, dass es die Druckausgleichsfunktion optimal erfüllt, da die erforderliche mechanische Stabilität und der Schutz vor äußeren Beschädigungen von der erwähnten Schutzvorrichtung übernommen werden. Dadurch ist es möglich, kostengünstige herkömmliche Druckausgleichselemente für den Druckausgleich am Gehäuse eines Steuergeräts einer elektrischen Maschine einzusetzen. The electric machine according to the invention with the features of claim 1 has the advantage that as a pressure compensation element, an element can be used, which itself has a very simple structure and no special stability criteria must meet. The pressure compensation element is covered by a protective device which is attached to the housing of the control unit, so that thus the required mechanical protection against damage to the pressure compensation element is ensured. The pressure compensation element itself can be designed and constructed so that it optimally fulfills the pressure compensation function, since the required mechanical stability and protection against external damage are taken over by the protective device mentioned. This makes it possible to use inexpensive conventional pressure compensation elements for pressure equalization on the housing of a control unit of an electric machine.
Das Druckausgleichselement liegt bevorzugt am Gehäusedeckel des Steuergeräts in einer Vertiefung ein, wodurch eine platzsparende Anbringung des Druckausgleichselements mit zugehöriger Schutzvorrichtung möglich ist. The pressure compensation element is preferably located on the housing cover of the controller in a recess, whereby a space-saving attachment of the pressure compensation element with associated protection device is possible.
Besonders vorteilhaft ist es, angrenzend an das Druckausgleichselement Wasserablaufrinnen am Gehäusedeckel anzuordnen, wodurch sichergestellt wird, dass im Bereich des Druckausgleichselements anfallendes Wasser gezielt abgeleitet wird. Dabei können die Wasserablaufrinnen in ihrer Ausrichtung und Oberflächenbeschaffenheit so gestaltet sein, dass ein schnelles Ableiten von Wasser gewährleistet ist. Besonders glatte Oberflächen oder wasserabweisende Oberflächen sind dabei im Bereich der Wasserablaufrinnen besonders vorteilhaft. Dadurch wird erreicht, dass die Druckausgleichsfunktion des Druckausgleichselements möglichst nicht durch Feuchtigkeit oder Wasser beeinträchtigt wird. It is particularly advantageous to arrange water drainage channels on the housing cover adjacent to the pressure compensation element, thereby ensuring that water accumulating in the region of the pressure compensation element is purposefully discharged. The water drainage channels can be designed in their orientation and surface finish so that a quick drainage of water is ensured. Particularly smooth surfaces or water-repellent surfaces are particularly advantageous in the area of the water drainage channels. This ensures that the pressure compensation function of the pressure compensation element is not affected as much as possible by moisture or water.
Bei der bevorzugten Ausführungsform werden fünf Wasserablaufrinnen vorgesehen, die in vorzugsweise gleichen Winkelabständen sternförmig vom Druckausgleichselement ausgerichtet sind. Damit wird sichergestellt, dass bei einer vertikalen Ausrichtung des Gehäusedeckels aus wenigstens zwei Ablaufrinnen Wasser aus dem Bereich des Druckausgleichselements nach unten abgeleitet wird. Bei Verwendung von wenigstens vier Wasserablaufrinnen, die in einem Winkelabstand von 90° zueinander ausgerichtet sind, ist
dagegen lediglich sichergestellt, dass aus wenigstens einer Wasserablaufrinne Wasser nach unten abgeleitet werden kann. Die Verwendung von einer zusätzlichen Wasserablaufrinne, also insgesamt fünf Wasserablaufrinnen, verbessert damit die Fähigkeit, Wasser möglichst schnell aus dem Bereich des Druckausgleichselements abzuleiten, deutlich. In the preferred embodiment, five water drainage channels are provided, which are aligned in a star shape of the pressure compensation element at preferably equal angular intervals. This ensures that with a vertical orientation of the housing cover from at least two gutters water is discharged from the region of the pressure compensation element down. When using at least four water gutters, which are aligned at an angular distance of 90 ° to each other, is however, merely ensures that water can be discharged downwards from at least one water drainage channel. The use of an additional water drainage channel, so a total of five water drainage channels, thus significantly improves the ability to drain water as quickly as possible from the area of the pressure compensation element.
Die Schutzvorrichtung, die das Druckausgleichselement vor mechanischen Beaufschlagungen und insbesondere vor Beschädigungen schützt, ist bevorzugt an einer den Gehäusedeckel übergreifenden Abdeckeinheit angebracht. Diese Abdeckeinheit kann sowohl den Gehäusedeckel an der elektrischen Maschine sichern und auch gegen Beschädigungen an kritischen Bereichen schützen als auch das am Gehäusedeckel angebrachte Druckausgleichselement schützend abdecken. Der Gehäusedeckel und auch die Abdeckeinheit können als Kunststoffteile ausgeführt sein, wobei die Abdeckeinheit aus einem besonders strapazierfähigen Kunststoffmaterial hergestellt sein kann. Dadurch erhält man eine hohe mechanische Stabilität für die Abdeckeinheit und einen entsprechend hohen mechanischen Schutz für das Druckausgleichselement. The protective device, which protects the pressure compensation element from mechanical loading and in particular from damage, is preferably attached to a cover cover unit which engages over the housing cover. This cover unit can both secure the housing cover on the electric machine and protect against damage to critical areas as well as covering the housing cover mounted pressure compensation element protectively. The housing cover and the cover unit can be designed as plastic parts, wherein the cover unit can be made of a particularly durable plastic material. This gives a high mechanical stability for the cover and a correspondingly high mechanical protection for the pressure compensation element.
Die an der Abdeckeinheit angebrachte Schutzvorrichtung kann sehr vorteilhaft einen in Richtung Druckausgleichselement abstehenden ringförmigen Rand haben, der einen größeren Umfang hat als das Druckausgleichselement. Die Schutzvorrichtung übergreift damit mit einem schützenden Rand das Druckausgleichselement, sodass sich ein optimaler allseitiger mechanischer Schutz und auch ein Schutz gegen Hochdruckspritzwasser für das Druckausgleichselement ergibt. The attached to the cover unit protection device can very advantageously have a projecting in the direction of the pressure compensation element annular edge, which has a larger circumference than the pressure compensation element. The protective device thus engages with a protective edge of the pressure compensation element, so that there is an optimal all-round mechanical protection and protection against high-pressure water spray for the pressure compensation element.
Der Rand der Schutzvorrichtung kann Aussparungen haben, die als Wasserablauföffnungen dienen. Damit ist es möglich, dass sich der Rand der Schutzvorrichtung sehr weit in Richtung Gehäusedeckel erstrecken kann, da über die Aussparungen im Rand weiterhin eine gute Wasserableitung gewährleistet ist. Durch den weiter in Richtung Gehäusedeckel sich erstreckenden Rand der Schutzvorrichtung wird ein verbesserter mechanischer Schutz für das von der Schutzvorrichtung abgedeckte Druckausgleichselement erreicht. The edge of the protection device may have recesses that serve as water drainage openings. Thus, it is possible that the edge of the protective device can extend very far in the direction of the housing cover, as on the recesses in the edge continues to ensure good drainage. By further in the direction of the housing cover extending edge of the protection device, an improved mechanical protection for the covered by the protection pressure compensation element is achieved.
Die Aussparungen im Rand der Schutzvorrichtung sind vorzugsweise versetzt gegenüber den sternförmig angeordneten Wasserablaufrinnen ausgerichtet. Die Aussparungen fluchten somit
nicht mit den Wasserablaufrinnen, sodass auch von außen anfallendes Spritzwasser nicht direkt über die Wasserablaufrinnen zum Druckausgleichselement gelangen kann. The recesses in the edge of the protective device are preferably offset relative to the star-shaped water drainage channels aligned. The recesses are thus aligned not with the water drainage channels, so that even from outside accumulating splash water can not get directly to the pressure equalization element via the water drainage channels.
Das erfindungsgemäß geschützte Druckausgleichselement kann sehr einfach als scheibenförmiges Element mit einer dampfdiffusionsoffenen Membran ausgebildet sein, welches mit dem Gehäusedeckel verklebt, verschweißt oder in anderer Weise unlösbar verbunden sein kann. Dampfdiffusionsoffene Membranen sind seit langem allgemein bekannt, die zwar dampfdurchlässig aber nicht wasserdurchlässig sind. Ein solches scheibenförmiges Element als Druckausgleichselement lässt sich mit sehr einfachen Mitteln am Gehäusedeckel eines Steuergeräts anbringen und erfordert wenig Bauraum. The present invention protected pressure compensation element can be easily formed as a disk-shaped element with a vapor diffusion-open membrane, which can be glued to the housing cover, welded or otherwise connected inextricably. Vapor permeable membranes have long been known, although they are vapor permeable but not permeable to water. Such a disc-shaped element as a pressure compensation element can be attached with very simple means on the housing cover of a control unit and requires little space.
Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. The invention will be explained in more detail with reference to an embodiment shown in the drawing.
Es zeigen: Show it:
Figur 1 eine Ansicht einer elektrischen Maschine, 1 shows a view of an electrical machine,
Figur 2 ein mit einem Gehäusedeckel abgeschlossenes Gehäuse einer Steuereinrichtung einer elektrischen Maschine, FIG. 2 shows a housing of a control device of an electrical machine, which housing is closed off with a housing cover,
Figur 3 die Unterseite einer Abdeckeinheit, die über den in Figur 2 dargestellten Gehäusedeckel aufsetzbar ist, 3 shows the underside of a cover unit which can be placed over the housing cover shown in FIG. 2, FIG.
Figur 4 einen Ausschnitt des Gehäusedeckels von Figur 2 mit aufgesetzter Abdeckeinheit, FIG. 4 shows a section of the housing cover of FIG. 2 with attached cover unit;
Figur 5 eine Schnittansicht entlang der Schnittebene A-A von Figur 4 und Figure 5 is a sectional view taken along the section plane A-A of Figure 4 and
Figur 6 die Unterseite einer in Figur 5 im Schnitt dargestellten Schutzvorrichtung. FIG. 6 shows the underside of a protective device shown in section in FIG.
Die in Figur 1 dargestellte elektrische Maschine 1 besitzt ein Statorgehäuse 2, in welchem der Stator und der hier nicht sichtbare Rotor einhegen. An der Welle des Rotors ist zur Drehmomentübertragung eine Riemenscheibe 3 montiert. An der der Riemenscheibe 3
gegenüberliegenden Seite der elektrischen Maschine 1 befindet sich in einem Gehäuse 4 ein Steuergerät 5 mit seinen elektronischen Bauteilen. Das Gehäuse 4 wird von einem Gehäusedeckel 8 stirnseitig abgeschlossen, der mittels einer Abdeckeinheit 12 am Gehäuse 4 gehalten wird. Die Abdeckeinheit 12 übergreift den Gehäusedeckel 8 an seinem Umfangsrand. The electric machine 1 shown in FIG. 1 has a stator housing 2 in which the stator and the rotor (not visible here) are enclosed. On the shaft of the rotor, a pulley 3 is mounted for torque transmission. At the pulley 3 opposite side of the electric machine 1 is located in a housing 4, a control unit 5 with its electronic components. The housing 4 is closed by a housing cover 8 frontally, which is held by means of a cover 12 on the housing 4. The cover unit 12 engages over the housing cover 8 at its peripheral edge.
In Figur 2 ist die Draufsicht auf den Gehäusedeckel 8 dargestellt, der Teil eines Steuergeräts 5 ist und dessen Gehäuseinneres wasserdicht abschließt. Am Gehäusedeckel 8 ist eine Vertiefung ausgebildet, in der ein Druckausgleichselement 9 einliegt. Das Druckausgleichselement 9 wird im Wesentlichen von einer dampfdiffusionsoffenen Membran 10 gebildet, die eine hier nicht sichtbare Druckausgleichsöffnung im Gehäusedeckel 8 abdeckt. In Figure 2, the plan view is shown on the housing cover 8, which is part of a control unit 5 and the housing interior is watertight. On the housing cover 8, a recess is formed, in which a pressure compensation element 9 rests. The pressure compensation element 9 is essentially formed by a vapor diffusion open membrane 10, which covers a not visible here pressure equalization opening in the housing cover 8.
Vom Gehäuse 4 des in Figur 2 dargestellten Steuergeräts 5 ragen elektrische Anschlusselemente 11, 12 ab, wobei das Anschlusselement 11 zur Versorgung des Bordnetzes bzw. einer Batterie eines Kraftfahrzeugs dient. Protruding from the housing 4 of the control device 5 illustrated in FIG. 2 are electrical connecting elements 11, 12, the connecting element 11 serving to supply the electrical system or a battery of a motor vehicle.
Figur 3 zeigt nun die Unterseite der Abdeckeinheit 12, die eine an einem Steg 13 angebrachte Schutzvorrichtung 14 hat. Die Abdeckeinheit 12 ist so gestaltet, dass diese das Druckausgleichselement 9 mit der Schutzvorrichtung 14 schützend abdeckt, wenn die Abdeckeinheit 12 mit ihrer in Figur 3 sichtbaren Unterseite auf den Gerätedeckel 8 von Figur 2 aufgesetzt ist. FIG. 3 now shows the underside of the cover unit 12, which has a protective device 14 attached to a web 13. The cover unit 12 is designed so that it covers the pressure compensation element 9 with the protective device 14 protectively when the cover unit 12 is placed with its visible in Figure 3 underside on the device cover 8 of Figure 2.
Die Schutzvorrichtung 14 überdeckt das Druckausgleichselement 9 dann in der Weise, dass dessen Membran 10 vor mechanischen Einwirkungen und insbesondere vor Hochdruckwasser geschützt ist. Die Schutzvorrichtung 14 schließt aber das Druckausgleichselement 9 nicht luftdicht ab, sondern ermöglicht es, dass im Bereich des Druckausgleichselements 9 anfallendes Wasser problemlos von diesem abfließen kann. Hierzu sind auch am Gehäusedeckel 8 insgesamt fünf sternförmig angeordnete Wasserablaufrinnen 15 vorgesehen, die in der vergrößerten Darstellung von Figur 4 deutlicher ersichtlich sind. The protective device 14 then covers the pressure compensation element 9 in such a way that its membrane 10 is protected against mechanical influences and in particular against high-pressure water. The protection device 14 but does not close the pressure compensation element 9 from airtight, but it allows that in the region of the pressure compensation element 9 accumulating water can flow smoothly from this. For this purpose, a total of five star-shaped water drainage channels 15 are provided on the housing cover 8, which are more clearly visible in the enlarged view of FIG.
Die in Figur 3 dargestellte Abdeckeinheit 12 besitzt einen Umfangsrand 16 mit Befestigungslaschen 17, mit denen die Abdeckeinheit 12 am Steuergerät 5 befestigbar ist.
Die vergrößerte Darstellung von Figur 4 zeigt den Bereich des Steuergeräts 5 von Figur 2, in welchem sich das Druckausgleichselement 9 befindet, welches hier jedoch von der Abdeckeinheit 12 abgedeckt ist. Von der Abdeckeinheit 12 ist hier ein Teil der Strebe 13 von Figur 3 ersichtlich, die die kappenförmige Schutzvorrichtung 14 trägt. Direkt unter der Schutzvorrichtung 14 befindet sich das hier nicht dargestellte Druckausgleichselement 9 in einer Vertiefung des Gehäusedeckels 8. Von der Vertiefung 18, die in Figur 5 ersichtlich ist, ragen in gleichen Winkelabständen sternförmig Wasserablaufrinnen 15 ab, damit aus der Vertiefung 18 eventuell anfallendes Wasser über den Gehäusedeckel 8 abgeführt werden kann. The cover unit 12 shown in Figure 3 has a peripheral edge 16 with fastening tabs 17, with which the cover unit 12 is fastened to the control unit 5. The enlarged view of Figure 4 shows the area of the control unit 5 of Figure 2, in which the pressure compensation element 9 is located, which is here, however, covered by the cover unit 12. Of the cover unit 12 here is a part of the strut 13 of Figure 3 can be seen, which carries the cap-shaped guard 14. Directly below the protection device 14 is not shown here pressure compensation element 9 in a recess of the housing cover 8. From the recess 18, which can be seen in Figure 5, protrude at equal angular intervals star-shaped Wasserablaufrinnen 15, thus from the recess 18 possibly accumulating water over the housing cover 8 can be removed.
In Figur 5 ist die Schnittansicht A-A von Figur 4 vergrößert dargestellt, jedoch ohne die Strebe 13 der Abdeckeinheit 12. Die als Abdeckkappe ausgebildete Schutzvorrichtung 14 besitzt einen in Richtung Vertiefung 18 abstehenden ringförmigen Rand 19, der das in der Vertiefung 18 einliegende Druckausgleichselement 9 in geringem Abstand an seinem Umfangsrand umgreift. Der Rand 19 der Schutzvorrichtung 14 besitzt Aussparungen 20, die einen Abfluss von eventuell eingedrungenem Wasser im Bereich des Druckausgleichselements 9 nach außen über die Wasserablaufrinnen 15 begünstigen. In FIG. 5, the sectional view AA of FIG. 4 is shown enlarged, but without the strut 13 of the cover unit 12. The protective device 14 designed as a covering cap has an annular edge 19 projecting in the direction of the recess 18, reducing the pressure compensation element 9 in the recess 18 slightly Surrounds the distance at its peripheral edge. The edge 19 of the protection device 14 has recesses 20, which favor an outflow of any penetrated water in the region of the pressure compensation element 9 to the outside via the water drainage channels 15.
Das in der Vertiefung 18 einliegende Druckausgleichselement 9 besteht im Wesentlichen aus einer dampfdiffusionsoffenen Membran 10, die eine zum Gehäuseinneren 21 führende Druckausgleichsöffnung 22 abdeckt. Über die Druckausgleichsöffnung 22 und die Membran 10 erfolgt ein Druckausgleich zwischen dem Gehäuseinneren 21 des Steuergeräts 5 und der Umgebung 23. Das Druckausgleichselement 9 ist im dargestellten Ausführungsbeispiel in der Vertiefung 18 mit dem Gehäusedeckel 8 verklebt, wodurch ein spritzwasserdichter Abschluss im Bereich der Druckausgleichsöffnung 22 gewährleistet ist. The pressure compensation element 9 inserted in the recess 18 consists essentially of a vapor diffusion open membrane 10 which covers a pressure equalization opening 22 leading to the housing interior 21. The pressure compensation element 9 is glued in the illustrated embodiment in the recess 18 with the housing cover 8, whereby a splash-proof completion in the region of the pressure compensation opening 22 is.
In Figur 4 und Figur 5 ist ersichtlich, dass die Aussparungen 20 versetzt zu den Wasserablaufrinnen 15 ausgerichtet sind. In FIG. 4 and FIG. 5, it can be seen that the recesses 20 are aligned offset relative to the water drainage channels 15.
Figur 6 zeigt die Unterseite der in Figur 5 im Schnitt dargestellten Schutzvorrichtung 14 mit dem Aussparungen 20 aufweisenden Rand 19.
FIG. 6 shows the underside of the protective device 14 shown in section in FIG. 5 with the edge 19 having recesses 20.
Claims
1. Schutzvorrichtung für ein Druckausgleichselement (9), das am Gehäuse (4) eines Steuergeräts (5) einer elektrischen Maschine (1) zur Herstellung eines Druckausgleichs zwischen dem Umgebungsdruck und dem Druck im Gehäuseinneren (21) des Steuergeräts (5) angebracht ist, dadurch gekennzeichnet, dass das Druckausgleichselement (9) eine an einem Gehäusedeckel (8) des Steuergeräts (5) vorgesehene Druckausgleichsöffnung (22) abdeckt, und dass eine das Druckausgleichselement (9) überdeckende Schutzvorrichtung (14) am Gehäuse (4) des Steuergeräts (5) befestigt ist. 1. Protection device for a pressure compensation element (9) which is mounted on the housing (4) of a control device (5) of an electrical machine (1) for establishing a pressure equalization between the ambient pressure and the pressure inside the housing (21) of the control device (5), characterized in that the pressure compensation element (9) covers a pressure compensation opening (22) provided on a housing cover (8) of the control device (5), and in that a protective device (14) covering the pressure compensation element (9) on the housing (4) of the control device (5 ) is attached.
2. Schutzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Druckausgleichselement (9) in einer am Gehäusedeckel (8) vorgesehenen Vertiefung (18) einliegt. 2. Protection device according to claim 1, characterized in that the pressure compensation element (9) rests in a recess (18) provided on the housing cover (8).
3. Schutzvorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass am Gehäusedeckel (8) angrenzend an das Druckausgleichselement (9) Wasserablaufrinnen (15) angeordnet sind. 3. Protection device according to one of claims 1 or 2, characterized in that the housing cover (8) adjacent to the pressure compensation element (9) Wasserablaufrinnen (15) are arranged.
4. Schutzvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass wenigstens drei Wasserablaufrinnen (15) sternförmig vom Druckausgleichselement (9) abstehend ausgerichtet sind. 4. Protection device according to claim 3, characterized in that at least three water drainage channels (15) are aligned in a star shape projecting from the pressure compensation element (9).
5. Schutzvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Wasserablaufrinnen (15) in gleichen Winkelabständen vom Druckausgleichselement (9) abstehend ausgerichtet sind. 5. Protection device according to claim 4, characterized in that the water drainage channels (15) are aligned at equal angular intervals from the pressure compensation element (9) projecting.
6. Schutzvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schutzvorrichtung (14) an einer den Gehäusedeckel (8) übergreifenden Abdeckeinheit (12) angebracht ist.
6. Protection device according to one of the preceding claims, characterized in that the protective device (14) on a housing cover (8) cross cover unit (12) is mounted.
7. Schutzvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schutzvorrichtung (14) einen in Richtung Druckausgleichselement (9) abstehenden ringförmigen Rand (19) hat, der einen größeren Umfang hat als das Druckausgleichselement (9). 7. Protection device according to one of the preceding claims, characterized in that the protective device (14) in the direction of pressure compensation element (9) projecting annular edge (19) which has a larger circumference than the pressure compensation element (9).
8. Schutzvorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der Rand (19) Aussparungen (20) hat, die als Wasserablauföffnungen dienen. 8. Protection device according to claim 7, characterized in that the edge (19) has recesses (20) which serve as water drainage openings.
9. Schutzvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Aussparungen (20) winkelversetzt zu den sternförmig ausgerichteten Wasserablaufrinnen (15) ausgerichtet sind. 9. Protection device according to claim 8, characterized in that the recesses (20) are angularly offset from the star-shaped water drainage channels (15) are aligned.
10. Schutzvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Druckausgleichselement (9) ein scheibenförmiges Element mit einer dampfdiffusionsoffenen Membran (10) ist, welches mit dem Gehäusedeckel (8) unlösbar verbunden ist.
10. Protection device according to one of the preceding claims, characterized in that the pressure compensation element (9) is a disk-shaped element with a vapor-permeable membrane (10), which is permanently connected to the housing cover (8).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014226575.4 | 2014-12-19 | ||
| DE102014226575.4A DE102014226575A1 (en) | 2014-12-19 | 2014-12-19 | Protection device for a pressure compensation element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2016096421A2 true WO2016096421A2 (en) | 2016-06-23 |
| WO2016096421A3 WO2016096421A3 (en) | 2016-08-11 |
Family
ID=54771109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2015/078304 WO2016096421A2 (en) | 2014-12-19 | 2015-12-02 | Protective device for a pressure equalizing element |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102014226575A1 (en) |
| WO (1) | WO2016096421A2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019072825A1 (en) * | 2017-10-10 | 2019-04-18 | Brose Fahrzeugteile Gmbh & Co Kommanditgesellscahft, Würzburg | Electric motor and cooling fan module |
| CN111434194A (en) * | 2017-11-30 | 2020-07-17 | Tdk电子股份有限公司 | Shell body |
| CN114087346A (en) * | 2020-08-24 | 2022-02-25 | 加特可株式会社 | Speed reducer casing |
| US20220136596A1 (en) * | 2019-02-26 | 2022-05-05 | Jatco Ltd | Transmission case |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020124436A1 (en) * | 2020-09-18 | 2022-03-24 | Valeo Siemens Eautomotive Germany Gmbh | Housing for an electric machine, electric machine and vehicle with an electric machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2330952A (en) * | 1997-11-01 | 1999-05-05 | Motorola Ltd | Sealing arrangement for an electronic circuit module |
| DE102006062044A1 (en) * | 2006-09-27 | 2008-04-03 | Robert Bosch Gmbh | Pressure compensation element, in particular for pressure equalization in a housing |
| DE102006053113A1 (en) * | 2006-11-10 | 2008-05-15 | Robert Bosch Gmbh | Pressure compensation element for a housing |
| DE102006053111A1 (en) * | 2006-11-10 | 2008-05-15 | Robert Bosch Gmbh | Pressure equalization device for a housing |
| CN102264608B (en) * | 2008-12-31 | 2013-10-23 | W.L.戈尔有限公司 | Venting device |
| FR2985699B1 (en) * | 2012-01-18 | 2015-02-13 | Valeo Systemes Dessuyage | DEVICE FOR PROTECTING A BREATHING MEMBRANE, MOTORIZING UNIT AND WIPING SYSTEM PROVIDED WITH SUCH A DEVICE |
-
2014
- 2014-12-19 DE DE102014226575.4A patent/DE102014226575A1/en not_active Withdrawn
-
2015
- 2015-12-02 WO PCT/EP2015/078304 patent/WO2016096421A2/en active Application Filing
Non-Patent Citations (1)
| Title |
|---|
| None |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019072825A1 (en) * | 2017-10-10 | 2019-04-18 | Brose Fahrzeugteile Gmbh & Co Kommanditgesellscahft, Würzburg | Electric motor and cooling fan module |
| CN111434194A (en) * | 2017-11-30 | 2020-07-17 | Tdk电子股份有限公司 | Shell body |
| US11274986B2 (en) | 2017-11-30 | 2022-03-15 | Tdk Electronics Ag | Housing with pressure compensating element |
| CN111434194B (en) * | 2017-11-30 | 2022-03-22 | Tdk电子股份有限公司 | Shell body |
| US20220136596A1 (en) * | 2019-02-26 | 2022-05-05 | Jatco Ltd | Transmission case |
| US11725720B2 (en) * | 2019-02-26 | 2023-08-15 | Jatco Ltd | Transmission case |
| CN114087346A (en) * | 2020-08-24 | 2022-02-25 | 加特可株式会社 | Speed reducer casing |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014226575A1 (en) | 2016-06-23 |
| WO2016096421A3 (en) | 2016-08-11 |
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