[go: up one dir, main page]

WO1992016089A1 - Electrical device, in particular a switching or control device for motor vehicles - Google Patents

Electrical device, in particular a switching or control device for motor vehicles Download PDF

Info

Publication number
WO1992016089A1
WO1992016089A1 PCT/DE1991/000932 DE9100932W WO9216089A1 WO 1992016089 A1 WO1992016089 A1 WO 1992016089A1 DE 9100932 W DE9100932 W DE 9100932W WO 9216089 A1 WO9216089 A1 WO 9216089A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
circuit board
electrical device
printed circuit
contact element
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.)
Ceased
Application number
PCT/DE1991/000932
Other languages
German (de)
French (fr)
Inventor
Reinhard Fassel
Georg Haubner
Hartmut Zoebl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO1992016089A1 publication Critical patent/WO1992016089A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
    • H05K5/0047—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB
    • 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
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/03—Use of materials for the substrate
    • H05K1/05—Insulated conductive substrates, e.g. insulated metal substrate
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/05—Flexible printed circuits [FPCs]
    • H05K2201/051—Rolled
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
    • H05K2201/0999—Circuit printed on or in housing, e.g. housing as PCB; Circuit printed on the case of a component; PCB affixed to housing
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10189—Non-printed connector
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
    • H05K2201/2009—Reinforced areas, e.g. for a specific part of a flexible printed circuit
    • 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
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/0058—Laminating printed circuit boards onto other substrates, e.g. metallic substrates

Definitions

  • the invention relates to an electrical device, in particular a switching or control device for motor vehicles, according to the preamble of the main claim.
  • electrical devices are known in a large variety of embodiments. Particularly when used in automotive electrics, these are exposed to different environmental influences, such as: B. moisture, penetrating salt, vibrations, etc. against which they should be resistant. At the same time, the space requirement of such devices must be as small as possible, since often only a limited installation space is available. In addition, a construction that is as simple and inexpensive as possible is sought.
  • the electrical device has to accommodate a sometimes very extensive and complex electronic circuit which, above all, also meets the requirements with regard to the mechanical loads (vibration resistance) that arise from use in a motor vehicle (for example when installed in the engine compartment) ⁇ kick.
  • the electrical device with the characterizing features of the main claim has the advantage that there is a particularly space-saving design, since the printed circuit board, which carries an electronic circuit, is flexible and is arranged in a rolled-up form in a housing.
  • the resulting curvature of the printed circuit board gives it a relatively high stability, despite the flexible design.
  • the electrical device according to the invention is characterized by a simple, compact structure, but can nevertheless have complex, complex circuits which are accommodated, for example, on a printed circuit board which has a very large footprint.
  • the dimensions of the printed circuit board, in particular the longitudinal extent, can be a multiple of the length of the housing.
  • FIG. 1 shows in FIG. 1 a cross section through an electrical device in a simplified representation and in FIG. 2 shows a section along II-II according to FIG. 1.
  • the electrical device shown in FIGS. 1 and 2 essentially has a housing 10, a printed circuit board 11 which carries an electronic circuit, and a plug connector 12.
  • the housing 10 consists of a housing base body 14, a side wall 15 and an end wall 16.
  • the housing base body 14 is composed of a base part 17, a side wall 18 and a rear wall 19 and a cover 20, and is a uniform, coherent component Made of plastic.
  • the transition 21 between the rear wall 19 and the cover 20 is rounded, the radius corresponds approximately to half the distance between the cover 20 and the base part 17.
  • the base part 17 is elongated, so that a fastening section 22 is formed which has a bore 23, which is used to fasten the housing at the installation site.
  • the side wall 15 also made of plastic as an individual part is connected to the housing base body 14, for. B. glued or ultrasonically welded, that it is opposite its side wall 18 approximately parallel.
  • Both side walls 15, 18 are provided on their opposite surfaces each with a spiral groove 25, 26, each starting from a wedge-shaped groove 27, 28, of which only the groove 27 formed in the side wall 18 is shown.
  • These wedge-shaped grooves 27, 28 are formed on the inner surface of the side walls, specifically in their upper region, on the side facing away from the rear wall 19.
  • the open side of the housing is closed by the end wall 16. This has an opening 29 into which the plug connector 12 is inserted.
  • the end wall is provided on the inside with locking tongues 30 which cooperate with correspondingly designed locking lugs 31 in the basic housing body.
  • the basic housing body 14 and the side wall 15 are connected to the end wall 16 firmly but releasably.
  • the end wall 16 has in the region of the base part 17 an approximately parallel to this, outwardly facing fastening section 33, which is provided with holes 34.
  • the flexible printed circuit board is rolled up approximately in a spiral and is guided in the corresponding spiral grooves 25, 26 of the side walls.
  • a section 37 of the printed circuit board extends to the end wall 16 and is fastened to the inside thereof, for. B. glued.
  • the circuit board is connected to the connector strip 12, which is known per se, and which carries a multiplicity of connectors 38 which are arranged next to one another and in two rows one below the other.
  • the contact pins 39 of the plug penetrate the printed circuit board and are soldered to it.
  • Power components 40 are attached to the printed circuit board between the contact pins and the base part and are likewise connected to the latter.
  • thermal energy can be dissipated from these power components to the end wall, which is preferably made of metal for this purpose.
  • this can additionally be provided on the outside with cooling fins.
  • the cooling surface can thereby be made relatively large.
  • the assembly of the printed circuit board or its layout is selected such that all components which heat up strongly are arranged on the section 37 fastened to the end wall 16.
  • the free end of the printed circuit board 11 with the opposite edge regions is inserted into the wedge-shaped grooves 27, 28 of the side walls.
  • the printed circuit board By further pushing in, the printed circuit board, the width of which is somewhat greater than the distance between the side walls, reaches the area of the spiral grooves 25, 26 and is guided through them and rolled up when pushed in.
  • the end wall 16 lies with the section 37 of the circuit board attached to it open side of the housing so that locking lugs 31 and locking tongues 30 lie opposite one another. By pressing in the end wall or the locking tongues, it locks with the locking lugs, so that the housing is closed.
  • these snap-in connections enable the housing to be opened easily, so that the printed circuit board can be pulled out of the housing again for maintenance or for subsequent adjustment.
  • a circumferential groove can be made into which a corresponding sealing ring is inserted. It is also possible to glue the end wall tightly to the basic housing body, but this makes subsequent opening of the housing more difficult.
  • the spiral grooves are formed so that the circuit board is inserted and fixed without opposite areas of the circuit board touching.
  • the width of the grooves is expediently greater than the thickness of the circuit board. This also prevents excessive stress on the discrete components or their connection to the printed circuit board and the printed circuit board itself when it is inserted.
  • the discrete components are preferably arranged in rows which run approximately parallel to the end wall (from side wall to side wall). In addition, they are expediently oriented so that their longitudinal extension also extends in this direction. Furthermore, it is advantageous to carry out the assembly or the layout of the circuit board such that wide discrete components are arranged relatively close to section 37 of the circuit board, i. H. in areas of the printed circuit board with little curvature.
  • the vibrating strength very high ie the mechanical strength is much greater than with flat or folded flexible printed circuit boards, so that the risk of a short circuit due to unintentional contact between adjacent printed circuit board sections is very low.
  • the housing 10 shielding i. that is, to improve the electromagnetic compatibility (EMC) of the circuit
  • its plastic parts can be coated on the inside or the outside with a metallic or an electrically and / or magnetically well-conductive coating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

The electrical device disclosed has a flexible circuit board carrying an electronic circuit. This circuit board is fixed at one end (37) to a part (16) of the housing. The circuit board is rolled up in a spiral inside the housing, its edges fitting in spiral grooves (25, 26) in the housing. Power components (40) are located on the zone (37) of the circuit board fixed to the end wall (16) of the housing, the end wall thus acting as a cooling element.

Description

Elektrisches Gerät, insbesondere Schalt- oder Steuergerät für KraftfahrzeugeElectrical device, in particular switching or control device for motor vehicles

Stand der TechnikState of the art

Die Erfindung geht aus von einem elektrischen Gerät, insbesondere einem Schalt- oder Steuergerät für Kraftfahrzeuge, nach der Gattung des Hauptanspruchs. Derartige elektrische Geräte sind in einer großen Vielzahl von Ausfuhrungsformen bekannt. Insbesondere bei Ein¬ satz in der Kraftf hrzeugelektrik sind diese unterschiedlichen Um¬ welteinflüssen ausgesetzt, wie z. B. Feuchtigkeit, eindringendem Salz, Vibrationen u.v. ., gegen die sie beständig sein sollen. Gleichzeitig muß der Raumbedarf solcher Geräte möglichst gering sein, da oftmals nur ein beschränkter Einbauraum zur Verfügung steht. Dabei wird zusätzlich ein möglichst einfacher und kostengün¬ stiger Aufbau angestrebt. Dennoch muß das elektrische Gerät eine teilweise sehr umfangreiche und komplexe elektronische Schaltung aufnehmen, die vor allem auch hinsichtlich der mechanischen Bela¬ stungen (Rüttelfestigkeit) den Anforderungen genügt, die durch den Einsatz in einem Kraftfahrzeug (z. B. bei Einbau im Motorraum) auf¬ treten. Vorteile der ErfindungThe invention relates to an electrical device, in particular a switching or control device for motor vehicles, according to the preamble of the main claim. Such electrical devices are known in a large variety of embodiments. Particularly when used in automotive electrics, these are exposed to different environmental influences, such as: B. moisture, penetrating salt, vibrations, etc. against which they should be resistant. At the same time, the space requirement of such devices must be as small as possible, since often only a limited installation space is available. In addition, a construction that is as simple and inexpensive as possible is sought. Nevertheless, the electrical device has to accommodate a sometimes very extensive and complex electronic circuit which, above all, also meets the requirements with regard to the mechanical loads (vibration resistance) that arise from use in a motor vehicle (for example when installed in the engine compartment) ¬ kick. Advantages of the invention

Das elektrische Gerät mit den kennzeichnenden Merkmalen des Haupt¬ anspruchs hat demgegenüber den Vorteil, daß ein besonders raumspa¬ render Aufbau gegeben ist, da die Leiterplatte, die eine elektro¬ nische Schaltung trägt, flexibel ausgebildet und in aufgerollter Form in einem Gehäuse angeordnet ist. Die dadurch entstehende Wöl¬ bung der Leiterplatte verleiht dieser - trotz der flexiblen Aus¬ führung - eine relativ hohe Stabilität. Das erfindungsgemäße elek¬ trische Gerät zeichnet sich durch einen einfachen, kompakten Aufbau aus, kann aber dennoch komplexe, aufwendige Schaltungen aufweisen, die beispielsweise auf einer Leiterplatte untergebracht sind, die eine sehr große Grundfläche aufweist. Die Abmessungen der Leiter¬ platte, insbesondere die Längserstreckung, können ein Vielfaches der Länge des Gehäuses betragen.The electrical device with the characterizing features of the main claim has the advantage that there is a particularly space-saving design, since the printed circuit board, which carries an electronic circuit, is flexible and is arranged in a rolled-up form in a housing. The resulting curvature of the printed circuit board gives it a relatively high stability, despite the flexible design. The electrical device according to the invention is characterized by a simple, compact structure, but can nevertheless have complex, complex circuits which are accommodated, for example, on a printed circuit board which has a very large footprint. The dimensions of the printed circuit board, in particular the longitudinal extent, can be a multiple of the length of the housing.

Weitere Vorteile ergeben sich aus den Unter nsprüchen.Further advantages result from the subclaims.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der nachfolgenden Beschreibung und Zeichnung näher erläutert. Letztere zeigt in Figur 1 einen Querschnitt durch ein elektrisches Gerät in verein¬ fachter Darstellung und in Figur 2 einen Schnitt längs II-II nach Figur 1.An embodiment of the invention is explained in more detail in the following description and drawing. The latter shows in FIG. 1 a cross section through an electrical device in a simplified representation and in FIG. 2 shows a section along II-II according to FIG. 1.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Das in den Figuren 1 und 2 gezeigte elektrische Gerät weist im wesentlichen ein Gehäuse 10, eine Leiterplatte 11, die eine elektronische Schaltung trägt, und eine Steckerleiste 12 auf. Das Gehäuse 10 besteht aus einem Gehäusegrundkörper 14, einer Seitenwand 15 und einer Stirnwand 16. Der Gehäusegrundkörper 14 setzt sich zusammen aus einem Bodenteil 17, einer Seitenwand 18 sowie einer Rückwand 19 und einem Deckel 20, und ist als einheit¬ liches, zusammenhängendes Bauteil aus Kunststoff gefertigt. Der Übergang 21 zwischen Rückwand 19 und Deckel 20 ist abgerundet, der Radius entspricht etwa dem halben Abstand zwischen Deckel 20 und Bodenteil 17. Im Bereich der Rückwand 19 ist das Bodenteil 17 ver¬ längert, so daß ein Befestigungsabschnitt 22 ausgebildet ist, der eine Bohrung 23 aufweist, die zur Befestigung des Gehäuses am Ein¬ bauort dient. Die als Einzelteil ebenfalls aus Kunststoff gefertigte Seitenwand 15 ist mit dem Gehäusegrundkörper 14 so verbunden, z. B. geklebt oder ultraschallgeschweißt, daß sie dessen Seitenwand 18 etwa parallel gegenüberliegt.The electrical device shown in FIGS. 1 and 2 essentially has a housing 10, a printed circuit board 11 which carries an electronic circuit, and a plug connector 12. The housing 10 consists of a housing base body 14, a side wall 15 and an end wall 16. The housing base body 14 is composed of a base part 17, a side wall 18 and a rear wall 19 and a cover 20, and is a uniform, coherent component Made of plastic. The transition 21 between the rear wall 19 and the cover 20 is rounded, the radius corresponds approximately to half the distance between the cover 20 and the base part 17. In the region of the rear wall 19, the base part 17 is elongated, so that a fastening section 22 is formed which has a bore 23, which is used to fasten the housing at the installation site. The side wall 15 also made of plastic as an individual part is connected to the housing base body 14, for. B. glued or ultrasonically welded, that it is opposite its side wall 18 approximately parallel.

Beide Seitenwände 15, 18 sind an ihren gegenüberliegenden Flächen mit jeweils einer spiralförmigen Nut 25, 26 versehen, die jeweils von einer keilförmigen Nut 27, 28 ausgehen, von denen nur die in der Seitenwand 18 ausgebildete Nut 27 dargestellt ist. Diese keilför¬ migen Nuten 27, 28 sind an der inneren Fläche der Seitenwände aus¬ gebildet und zwar in deren oberen Bereich, an der der Rückwand 19 abgewandten Seite.Both side walls 15, 18 are provided on their opposite surfaces each with a spiral groove 25, 26, each starting from a wedge-shaped groove 27, 28, of which only the groove 27 formed in the side wall 18 is shown. These wedge-shaped grooves 27, 28 are formed on the inner surface of the side walls, specifically in their upper region, on the side facing away from the rear wall 19.

Die offene Seite des Gehäuses ist durch die Stirnwand 16 ver¬ schlossen. Diese weist eine Öffnung 29 auf, in die die Steckerleiste 12 eingesetzt ist. Die Stirnwand ist auf der Innenseite mit Rast¬ zungen 30 versehen, die mit entsprechend ausgebildeten Rastnasen 31 im Gehäusegrundkörper zusammenwirken. Durch die Rastnasen 31 und Rastzungen 30 werden der Gehäusegrundkörper 14 und die Seitenwand 15 fest, aber lösbar, mit der Stirnwand 16 verbunden. Zur Befestigung des Gehäuses am Einbauort weist die Stirnwand 16 im Bereich des Bodenteils 17 einen etwa parallel zu diesem verlaufenden, nach außen weisenden Befestigungsabschnitt 33 auf, der mit Bohrungen 34 versehen ist. Im Gehäuseinneren ist die flexible Leiterplatte 11 angeordnet, die eine elektronische Schaltung trägt, von der nur einige diskrete Bau¬ elemente 36, 40 dargestellt sind. Die flexible Leiterplatte ist etwa spiralförmig aufgerollt und ist in den entsprechenden spiralförmigen Nuten 25, 26 der Seitenwände geführt. Ein Abschnitt 37 der Leiter¬ platte reicht bis an die Stirnwand 16 und ist an deren Innenseite befestigt, z. B. verklebt. In diesem Bereich ist die Leiterplatte mit der - an sich bekannten - Steckerleiste 12 verbunden, die eine Vielzahl von Steckern 38 trägt, die nebeneinander und in zwei Reihen untereinander angeordnet sind. Zur elektrisch leitenden Verbindung mit der Leiterplatte 11, 37 durchdringen die Kontaktstifte 39 der Stecker die Leiterplatte und sind mit dieser verlötet. Zwischen den Kontaktstiften und dem Bodenteil sind auf der Leiterplatte Lei¬ stungsbauelemente 40 angebracht und ebenfalls mit dieser verbunden. Dadurch kann Wärmeenergie von diesen Leistungsbauelementen auf kur¬ zem Wege an die Stirnwand abgeführt werden, die dazu vorzugsweise aus Metall ausgebildet ist. Zur Verbesserung der Kühlwirkung kann diese zusätzlich an der Außenseite mit Kühlrippen versehen sein. Dadurch kann die Kühloberfläche im Gegensatz zu herkömmlichen Kühl¬ einheiten derartiger Geräte relativ groß ausgebildet werden.The open side of the housing is closed by the end wall 16. This has an opening 29 into which the plug connector 12 is inserted. The end wall is provided on the inside with locking tongues 30 which cooperate with correspondingly designed locking lugs 31 in the basic housing body. By means of the latching lugs 31 and latching tongues 30, the basic housing body 14 and the side wall 15 are connected to the end wall 16 firmly but releasably. To fasten the housing at the installation location, the end wall 16 has in the region of the base part 17 an approximately parallel to this, outwardly facing fastening section 33, which is provided with holes 34. The flexible printed circuit board 11, which carries an electronic circuit, of which only a few discrete components 36, 40 are shown, is arranged in the interior of the housing. The flexible printed circuit board is rolled up approximately in a spiral and is guided in the corresponding spiral grooves 25, 26 of the side walls. A section 37 of the printed circuit board extends to the end wall 16 and is fastened to the inside thereof, for. B. glued. In this area, the circuit board is connected to the connector strip 12, which is known per se, and which carries a multiplicity of connectors 38 which are arranged next to one another and in two rows one below the other. For the electrically conductive connection to the printed circuit board 11, 37, the contact pins 39 of the plug penetrate the printed circuit board and are soldered to it. Power components 40 are attached to the printed circuit board between the contact pins and the base part and are likewise connected to the latter. As a result, thermal energy can be dissipated from these power components to the end wall, which is preferably made of metal for this purpose. To improve the cooling effect, this can additionally be provided on the outside with cooling fins. In contrast to conventional cooling units of such devices, the cooling surface can thereby be made relatively large.

Die Bestückung der Leiterplatte bzw. deren Layout ist so gewählt, daß sämtliche sich stark erwärmenden Bauelemente auf dem an der Stirnwand 16 befestigten Abschnitt 37 angeordnet sind.The assembly of the printed circuit board or its layout is selected such that all components which heat up strongly are arranged on the section 37 fastened to the end wall 16.

Zur Montage des elektrischen Gerätes wird das freie Ende der Leiter¬ platte 11 mit den gegenüberliegenden Randbereichen in die keilförmi¬ gen Nuten 27, 28 der Seitenwände eingeführt. Durch weiteres Ein¬ schieben gelangt die Leiterplatte, deren Breite etwas größer ist als der Abstand der Seitenwände, in den Bereich der spiralförmigen Nuten 25, 26 und wird durch diese geführt und beim Einschieben aufgerollt. Bei fast vollständig aufgerollter Leiterplatte liegt die Stirnwand 16 mit dem daran befestigten Abschnitt 37 der Leiterplatte an der offenen Seite des Gehäuses an, so daß sich Rastnasen 31 und Rast¬ zungen 30 gegenüberliegen. Durch Eindrücken der Stirnwand bzw. der Rastzungen verriegelt diese mit den Rastnasen, so daß das Gehäuse verschlossen ist. Diese Rastverbindungen ermöglichen gleichzeitig ein leichtes Öffnen des Gehäuses, so daß die Leiterplatte zur War¬ tung oder zum nachträglichen Abgleichen wieder aus dem Gehäuse ge¬ zogen werden kann. Zur Abdichtung des Gehäuses kann eine umlaufende Nut angebracht werden, in die ein entsprechender Dichtring eingelegt wird. Es ist auch möglich, die Stirnwand mit dem Gehäusegrundkörper dicht zu verkleben, dadurch wird ein nachträgliches Öffnen des Ge¬ häuses jedoch erschwert.To assemble the electrical device, the free end of the printed circuit board 11 with the opposite edge regions is inserted into the wedge-shaped grooves 27, 28 of the side walls. By further pushing in, the printed circuit board, the width of which is somewhat greater than the distance between the side walls, reaches the area of the spiral grooves 25, 26 and is guided through them and rolled up when pushed in. When the circuit board is almost completely rolled up, the end wall 16 lies with the section 37 of the circuit board attached to it open side of the housing so that locking lugs 31 and locking tongues 30 lie opposite one another. By pressing in the end wall or the locking tongues, it locks with the locking lugs, so that the housing is closed. At the same time, these snap-in connections enable the housing to be opened easily, so that the printed circuit board can be pulled out of the housing again for maintenance or for subsequent adjustment. To seal the housing, a circumferential groove can be made into which a corresponding sealing ring is inserted. It is also possible to glue the end wall tightly to the basic housing body, but this makes subsequent opening of the housing more difficult.

Die spiralförmigen Nuten sind so ausgebildet, daß die Leiterplatte eingeführt und fixiert ist, ohne daß sich gegenüberliegende Bereiche der Leiterplatte berühren. Um die Führung der Leiterplatte leicht¬ gängig zu ermöglichen, ist die Breite der Nuten zweckmäßigerweise größer als die Dicke der Leiterplatte. Dadurch wird auch eine zu starke Belastung der diskreten Bauelemente bzw. deren Anbindung an die Leiterplatte und der Leiterplatte selbst beim Einschieben ver¬ hindert.The spiral grooves are formed so that the circuit board is inserted and fixed without opposite areas of the circuit board touching. In order to enable the circuit board to be guided easily, the width of the grooves is expediently greater than the thickness of the circuit board. This also prevents excessive stress on the discrete components or their connection to the printed circuit board and the printed circuit board itself when it is inserted.

Vorzugsweise sind die diskreten Bauelemente in Reihen angeordnet, die etwa parallel zur Stirnwand (von Seitenwand zu Seitenwand) ver¬ laufen. Darüber hinaus sind sie zweckmäßigerweise so ausgerichtet, daß ihre Längserstreckung ebenfalls in dieser Richtung verläuft. Weiterhin ist es vorteilhaft, die Bestückung bzw. das Layout der Leiterplatte so auszuführen, daß breite diskrete Bauelemente relativ nah am Abschnitt 37 der Leiterplatte angeordnet sind, d. h. in Be¬ reichen der Leiterplatte mit geringer Krümmung.The discrete components are preferably arranged in rows which run approximately parallel to the end wall (from side wall to side wall). In addition, they are expediently oriented so that their longitudinal extension also extends in this direction. Furthermore, it is advantageous to carry out the assembly or the layout of the circuit board such that wide discrete components are arranged relatively close to section 37 of the circuit board, i. H. in areas of the printed circuit board with little curvature.

Durch das Aufrollen der Leiterplatte bzw. durch die dadurch bedingte Wölbung und die Führung in den spiralförmigen Nuten wird die Rüttel- festigkeit sehr hoch, d. h. die mechanische Belastbarkeit ist sehr viel größer als bei flach angeordneten oder gefalteten flexiblen Leiterplatten, so daß die Gefahr eines Kurzschlusses durch unge¬ wollten Kontakt benachbarter Leiterplattenabschnitte sehr gering ist.By rolling up the circuit board or by the resulting curvature and the guidance in the spiral grooves, the vibrating strength very high, ie the mechanical strength is much greater than with flat or folded flexible printed circuit boards, so that the risk of a short circuit due to unintentional contact between adjacent printed circuit board sections is very low.

Um das Gehäuse 10 abschirmend auszubilden, d. h., die elektromagne¬ tische Verträglichkeit (EMV) der Schaltung zu verbessern, können dessen aus Kunststoff bestehenden Teile an der Innenseite oder der Außenseite mit einem metallischen bzw. einem elektrisch und/oder magnetisch gut leitendem Überzug beschichtet sein. To form the housing 10 shielding, i. that is, to improve the electromagnetic compatibility (EMC) of the circuit, its plastic parts can be coated on the inside or the outside with a metallic or an electrically and / or magnetically well-conductive coating.

Claims

Ansprüche Expectations 1. Elektrisches Gerät, insbesondere Schalt- oder Steuergerät für Kraftfahrzeuge, mit einer flexiblen Leiterplatte (11, 37) mit elektrischen/elektronischen Bauelementen (36, 40), die durch eine Schaltung verbunden sind, und der ein vielpoliges Steckkontaktele¬ ment (12) zugeordnet ist, das ein die Leiterplatte aufnehmendes Ge¬ häuse (10) durchsetzt, dadurch gekennzeichnet, daß die Leiterplatte über den überwiegenden Teil ihrer Länge etwa spiralförmig aufgerollt ist und an zwei gegenüberliegenden Randbereichen durch im Gehäuse ausgebildete Führungen (25, 26; 27, 28) fixiert ist.1. Electrical device, in particular switching or control device for motor vehicles, with a flexible printed circuit board (11, 37) with electrical / electronic components (36, 40), which are connected by a circuit, and which has a multipole plug contact element (12) is assigned which passes through a housing (10) receiving the printed circuit board, characterized in that the printed circuit board is rolled up approximately spirally over the majority of its length and on two opposite edge regions by guides (25, 26; 27, 28) formed in the housing ) is fixed. 2. Elektrisches Gerät nach Anspruch 1, dadurch gekennzeichnet, daß die Führungen als spiralförmige Nuten (25, 26) ausgebildet sind.2. Electrical device according to claim 1, characterized in that the guides are designed as spiral grooves (25, 26). 3. Elektrisches Gerät nach Anspruch 1 oder 2, dadurch gekennzeich¬ net, daß ein Abschnitt (37) der Leiterplatte mit einem das Steck¬ kontaktelement (12) aufnehmenden Teil (16) des Gehäuses flächig verbunden ist.3. Electrical device according to claim 1 or 2, characterized gekennzeich¬ net that a portion (37) of the circuit board with a plug-in contact element (12) receiving part (16) of the housing is connected flat. 4. Elektrisches Gerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Gehäuse zumindestens teilweise aus Kunst¬ stoff besteht. 4. Electrical device according to one of claims 1 to 3, characterized in that the housing consists at least partially of plastic. 5. Elektrisches Gerät nach einem der Ansprüche 1 bis 4, dadurch ge¬ kennzeichnet, daß sich stark erwärmende Bauelemente (40) auf demje¬ nigen Abschnitt (37) der Leiterplatte angeordnet sind, der mit dem das Steckkontaktelement aufnehmenden Teil des Gehäuses verbunden ist.5. Electrical device according to one of claims 1 to 4, characterized ge indicates that strongly heating components (40) are arranged on the portion (37) of the printed circuit board which is connected to the part of the housing which receives the plug contact element. 6. Elektrisches Gerät nach einem der Ansprüche 1 bis 5, dadurch ge¬ kennzeichnet, daß der das Steckkontaktelement aufnehmende Teil des Gehäuses als Stirnwand (16) ausgebildet ist.6. Electrical device according to one of claims 1 to 5, characterized ge indicates that the part of the housing receiving the plug contact element is designed as an end wall (16). 7. Elektrisches Gerät nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Oberfläche des Gehäuses metallisiert ist. 7. Electrical device according to one of claims 1 to 6, characterized in that the surface of the housing is metallized.
PCT/DE1991/000932 1991-03-09 1991-11-30 Electrical device, in particular a switching or control device for motor vehicles Ceased WO1992016089A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914107620 DE4107620A1 (en) 1991-03-09 1991-03-09 ELECTRICAL DEVICE, ESPECIALLY SWITCHING OR CONTROL UNIT FOR MOTOR VEHICLES
DEP4107620.6 1991-03-09

Publications (1)

Publication Number Publication Date
WO1992016089A1 true WO1992016089A1 (en) 1992-09-17

Family

ID=6426890

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1991/000932 Ceased WO1992016089A1 (en) 1991-03-09 1991-11-30 Electrical device, in particular a switching or control device for motor vehicles

Country Status (2)

Country Link
DE (1) DE4107620A1 (en)
WO (1) WO1992016089A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150364065A1 (en) * 2013-07-01 2015-12-17 Boe Technology Group Co., Ltd. Flexible display device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4429983C1 (en) * 1994-08-24 1995-11-16 Hella Kg Hueck & Co Automobile electrical or electronic device
DE29606435U1 (en) * 1996-04-06 1996-06-20 Hella Kg Hueck & Co, 59557 Lippstadt Control device, in particular for a motor vehicle
DE19705173C2 (en) * 1997-02-11 2002-10-24 Siemens Ag Electric device
DE20012623U1 (en) 2000-07-18 2000-11-30 TRW Automotive Electronics & Components GmbH & Co. KG, 78315 Radolfzell Housing for an electronic control unit in vehicles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2141593B2 (en) * 1971-08-19 1972-11-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt PROCESS AND DEVICE FOR MANUFACTURING A HIGH VOLTAGE DEVICE FOR THE POWER SUPPLY OF AN IMAGE CONVERTER TUBE
US4783359A (en) * 1986-11-18 1988-11-08 Rogers Corporation Electronic signal time dealy device and method of making the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE329230B (en) * 1968-04-18 1970-10-05 Bahco Ab
DE2424722C3 (en) * 1974-05-21 1979-12-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen Housing for electrical measurement and communication technology devices
DE7910180U1 (en) * 1979-04-07 1979-07-19 Moosbauer, Peter, Ing.(Grad.), 8174 Benediktbeuern Housing for printed circuit boards with standardized dimensions and standardized plug or socket strips
DE3226972A1 (en) * 1982-07-19 1984-01-19 Siemens AG, 1000 Berlin und 8000 München ELECTRONIC DEVICE WITH A HIGH PACKING DENSITY OF COMPONENTS
US4843520A (en) * 1987-02-03 1989-06-27 Matsushita Electric Industrial Co. Ltd. Electronic circuit module
US4811165A (en) * 1987-12-07 1989-03-07 Motorola, Inc. Assembly for circuit modules

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2141593B2 (en) * 1971-08-19 1972-11-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt PROCESS AND DEVICE FOR MANUFACTURING A HIGH VOLTAGE DEVICE FOR THE POWER SUPPLY OF AN IMAGE CONVERTER TUBE
US4783359A (en) * 1986-11-18 1988-11-08 Rogers Corporation Electronic signal time dealy device and method of making the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150364065A1 (en) * 2013-07-01 2015-12-17 Boe Technology Group Co., Ltd. Flexible display device

Also Published As

Publication number Publication date
DE4107620A1 (en) 1992-09-10

Similar Documents

Publication Publication Date Title
DE4232048C2 (en) Electronic control unit
EP1511368B1 (en) Sandwich housing for antenna amplifier
DE19741047C2 (en) Electronic ignition lock for motor vehicles
DE4225358A1 (en) Add-on control unit
DE19755765B4 (en) Housing with cover
DE3437988A1 (en) ELECTRICAL SWITCHGEAR
EP0982978B1 (en) Housing, in particular lock housing with electrical interconnections
DE4422434C1 (en) Central electric for motor vehicle
EP1282345B1 (en) Housing for board with electronic components in vehicle
WO1996031104A1 (en) Control unit for a motor vehicle
WO2015052117A1 (en) Electronic circuit
WO1992016089A1 (en) Electrical device, in particular a switching or control device for motor vehicles
DE3731413C2 (en)
DE4229727A1 (en) Vehicle electrical switch or control device - uses PCB with flexible part rolled into coil and accommodated in insulating jacket or envelope
EP2798921B1 (en) Housing for receiving an electronic unit
EP0650423B1 (en) Electrical device, especially a switching and control device for motor vehicles
EP2514285B1 (en) End element for a housing
EP1093706A2 (en) Housing for an electronics unit, especially an airbag control device
DE102016107898A1 (en) Lateral PCB connection
DE102010043495A1 (en) Electrical component for surface mounting
DE102018010157B4 (en) Assembly with an electronic device and a coupling and method for assembling the assembly
DE8430486U1 (en) Electrical switching device
WO1994003352A1 (en) Add-on control device
DE9200624U1 (en) Electrical device, in particular switching and control devices for motor vehicles
DE19725242C1 (en) Electronic assembly with a metallic shield at a connection area

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

122 Ep: pct application non-entry in european phase