DE20213998U1 - Housing and fixings for electrical and or electronic systems are produced from one metal to prevent corrosion - Google Patents
Housing and fixings for electrical and or electronic systems are produced from one metal to prevent corrosion Download PDFInfo
- Publication number
- DE20213998U1 DE20213998U1 DE20213998U DE20213998U DE20213998U1 DE 20213998 U1 DE20213998 U1 DE 20213998U1 DE 20213998 U DE20213998 U DE 20213998U DE 20213998 U DE20213998 U DE 20213998U DE 20213998 U1 DE20213998 U1 DE 20213998U1
- Authority
- DE
- Germany
- Prior art keywords
- screws
- housing
- produced
- electrical
- fixings
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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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
- H05K5/0004—Casings, cabinets or drawers for electric apparatus comprising several parts forming a closed casing
- H05K5/0008—Casings, cabinets or drawers for electric apparatus comprising several parts forming a closed casing assembled by screws
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Casings For Electric Apparatus (AREA)
- Connection Of Plates (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Gehäuse, insbesondere zur Aufnahme elektrischer oder elektronischer Bauteile, bestehend aus einem Unterteil und einem Deckel, welcher durch mehrere Schrauben lösbar mit dem Unterteil verbunden ist.The present invention relates to a housing, especially for holding electrical or electronic components, consisting of a lower part and a cover, which is secured by several screws solvable is connected to the lower part.
Gehäuse, insbesondere solche zur Aufnahme elektrischer oder elektronischer Bauteile, werden bislang vorzugsweise aus einem Leichtmetall, insbesondere Aluminium, hergestellt und die Verbindung zwischen Deckel und Unterteil erfolgt über Stahl-, Edelstahl- oder Messing-Schrauben, bzw. mit Schnellverschlüssen.Housing, especially those for Up to now, recording electrical or electronic components preferably made of a light metal, in particular aluminum and the connection between cover and base is made of steel, stainless steel or brass screws, or with quick fasteners.
Dabei werden Schrauben aus Stahl eventuell noch mit einem Oberflächenschutz versehen.Screws are made of steel possibly with a surface protection Mistake.
Bei der bekannten Materialkombination kommt es aufgrund der unterschiedlichen Potentiale der Grundmaterialien im Verbindungsbereich zu Korrosionserscheinungen. Dabei tritt die Korrosion an allen Kontaktflächen auf.In the known material combination comes it due to the different potentials of the base materials in the connection area to corrosion. The occurs Corrosion on all contact surfaces on.
Bei den Kontaktflächen handelt es sich sowohl um die Auflagefläche unter dem jeweiligen Schraubenkopf wie auch um die Anlageflächen an den Gewindeflanken.The contact areas are both around the contact surface under the respective screw head as well as around the contact surfaces on the Thread flanks.
Werden Gewindeeinsätze verwendet, die aus dem gleichen Material hergestellt sind wie die Schrauben, führt dies nur zu einer Verlagerung der Korrosionserscheinungen von den Gewindeflanken hin zum Sitz der Gewindeeinsätze.If thread inserts are used, which are made of the same material as the screws, does this only to a shift of the corrosion phenomena from the thread flanks to the seat of the thread inserts.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Gehäuse der gattungsgemäßen Art aufzuzeigen, welches die vorgenannten Mängel nicht aufweist und im Anlagebereich der Schrauben dauerhaft korrosionsbeständig ist.The present invention lies based on the task of a housing of the generic type to show which the aforementioned shortcomings does not have and is permanently corrosion-resistant in the contact area of the screws.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Unterteil, der Deckel und die Schrauben aus einem Material einer gleichartigen metallischen Werkstoffgruppe bestehen.This object is achieved according to the invention solved, that this Lower part, the cover and the screws made of one material similar metallic material group exist.
Durch diese vergleichsweise einfache Maßnahme wird die Korrosionsanfälligkeit im Verbindungsbereich der Schrauben sicher vermieden, da alle verwendeten Materialien das gleiche Potential aufweisen und somit elektrochemische Korrosionserscheinungen nicht auftreten können.Through this comparatively simple measure becomes the susceptibility to corrosion Avoid in the connection area of the screws, as all used Materials have the same potential and therefore electrochemical Corrosion can not occur.
Bevorzugt wird eine Ausführungsform, bei der die genannten Bauteile aus einer Aluminium-Legierung bestehen.An embodiment is preferred in which the components mentioned consist of an aluminum alloy.
Aluminium-Legierungen sind relativ leicht zu bearbeiten und vergleichsweise leicht und werden aus diesem Grund für die Herstellung von Unterteil und Deckel schon lange eingesetzt.Aluminum alloys are relative easy to edit and comparatively light and are made from this reason for the manufacture of the lower part and lid has long been used.
Die Verwendung von Schrauben, die ebenfalls aus einer Aluminium-Legierung bestehen, kann zu Problemen führen, wenn sogenannte Schlitz- oder Kreuzschlitz-Schrauben verwendet werden, da derartige Schraubenkopf-Formen unter Umständen beim Festziehen der Schrauben zu einer Deformation neigen können aufgrund der geringen Festigkeit einer Aluminium-Legierung.The use of screws that also consist of an aluminum alloy can cause problems to lead, if so-called slotted or Phillips screws are used, since such Screw head shapes under certain circumstances Tightening the screws can cause them to deform the low strength of an aluminum alloy.
Hiervon ausgehend in einem besonders bevorzugten Ausführungsbeispiel der Erfindung vorgesehen, daß die Schrauben einen mit einer in Richtung der Schrauben-Längsachse verlaufenden, sternförmigen Werkzeugaufnahme versehenen Schraubenkopf aufweisen.Proceeding from this in one particular preferred embodiment the invention provided that the Screw one with one in the direction of the screw's longitudinal axis trending, star-shaped Have a tool head with a screw head.
Durch einen derart gestalteten Schraubenkopf, der den Einsatz eines entsprechenden Werkzeuges bedingt, ergibt sich eine gute Kraftverteilung über die sternförmige Angriffsfläche, so daß auch bei relativ hohen Anzugskräften eine Deformation des Schraubenkopfes nicht zu befürchten ist.With a screw head designed in this way, which requires the use of an appropriate tool a good power distribution the star-shaped Attack surface, so that too with relatively high tightening forces deformation of the screw head is not to be feared.
Ein Ausführungsbeispiel der Erfindung ist in den beigefügten Zeichnungen dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is attached in the Drawings shown and will be described in more detail below.
Es zeigen:Show it:
In den Zeichnungen ist mit dem Bezugszeichen
Erfindungsgemäß sind Unterteil
Alle Bauteile weisen insoweit das gleiche Potential auf, so daß Korrosionserscheinungen im Verbindungsbereich der unterschiedlichen Bauteile nicht auftreten können.All components show that same potential so that signs of corrosion do not occur in the connection area of the different components can.
Wie besonders deutlich aus
Durch diese sternförmige Werkzeugaufnahme
wird in Verbendung mit einem einen entsprechenden Querschnitt aufweisenden
Werkzeug beim Anziehen der Schrauben
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20213998U DE20213998U1 (en) | 2002-09-11 | 2002-09-11 | Housing and fixings for electrical and or electronic systems are produced from one metal to prevent corrosion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20213998U DE20213998U1 (en) | 2002-09-11 | 2002-09-11 | Housing and fixings for electrical and or electronic systems are produced from one metal to prevent corrosion |
Publications (1)
Publication Number | Publication Date |
---|---|
DE20213998U1 true DE20213998U1 (en) | 2004-02-12 |
Family
ID=31724920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE20213998U Expired - Lifetime DE20213998U1 (en) | 2002-09-11 | 2002-09-11 | Housing and fixings for electrical and or electronic systems are produced from one metal to prevent corrosion |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE20213998U1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19840298A1 (en) * | 1998-09-04 | 2000-03-16 | Ejot Verbindungstech Gmbh & Co | Self-tapping light metal screw and process for their manufacture |
DE19958828C1 (en) * | 1999-12-07 | 2001-02-15 | Stihl Maschf Andreas | Connection between crankcase and cylinder casing, with non-ferrous clamping screws and with solidifying liquid seal between casing flanges |
DE10101618C1 (en) * | 2001-01-16 | 2002-04-18 | Rolec Gehaeuse Systeme Gmbh | Housing, especially for installation of electrical, electronic components, has coaxial openings in lid, lower part allowing passage of internal joining element(s) with compressed end(s) |
DE10059675A1 (en) * | 2000-12-01 | 2002-06-06 | Daimler Chrysler Ag | Crankshaft bearing for internal combustion engine has bearing cap constructed oversize so that side walls of crankcase reaching deeper over crankshaft in fitted state of bearing cap provide press fit |
-
2002
- 2002-09-11 DE DE20213998U patent/DE20213998U1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19840298A1 (en) * | 1998-09-04 | 2000-03-16 | Ejot Verbindungstech Gmbh & Co | Self-tapping light metal screw and process for their manufacture |
DE19958828C1 (en) * | 1999-12-07 | 2001-02-15 | Stihl Maschf Andreas | Connection between crankcase and cylinder casing, with non-ferrous clamping screws and with solidifying liquid seal between casing flanges |
DE10059675A1 (en) * | 2000-12-01 | 2002-06-06 | Daimler Chrysler Ag | Crankshaft bearing for internal combustion engine has bearing cap constructed oversize so that side walls of crankcase reaching deeper over crankshaft in fitted state of bearing cap provide press fit |
DE10101618C1 (en) * | 2001-01-16 | 2002-04-18 | Rolec Gehaeuse Systeme Gmbh | Housing, especially for installation of electrical, electronic components, has coaxial openings in lid, lower part allowing passage of internal joining element(s) with compressed end(s) |
Non-Patent Citations (2)
Title |
---|
HÜTTE: Grundlagen der Ingenieurwissenschaften,29.Auflage, Springer-Verlag,S.C51-C55 * |
HÜTTE: Grundlagen der Ingenieurwissenschaften,29.Auflage, Springer-Verlag,S.C51-C55; |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R163 | Identified publications notified | ||
R207 | Utility model specification |
Effective date: 20040318 |
|
R150 | Term of protection extended to 6 years |
Effective date: 20051007 |
|
R151 | Term of protection extended to 8 years |
Effective date: 20081010 |
|
R152 | Term of protection extended to 10 years |
Effective date: 20101019 |
|
R071 | Expiry of right | ||
R071 | Expiry of right |