DE3109250A1 - Electric domestic appliance with casing parts made of an electrically conductive material - Google Patents

Electric domestic appliance with casing parts made of an electrically conductive material

Info

Publication number
DE3109250A1
DE3109250A1 DE19813109250 DE3109250A DE3109250A1 DE 3109250 A1 DE3109250 A1 DE 3109250A1 DE 19813109250 DE19813109250 DE 19813109250 DE 3109250 A DE3109250 A DE 3109250A DE 3109250 A1 DE3109250 A1 DE 3109250A1
Authority
DE
Germany
Prior art keywords
electrically conductive
household appliance
adhesive
conductive material
domestic appliance
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
DE19813109250
Other languages
German (de)
Inventor
Otto 8225 Traunreut Bjarsch
Christian Gerold
Walter 7900 Ulm Ilg
Heinz 8225 Traunreut Kotsch
Karl Ernst Dr. Dr.rer.nat. 8221 Hörzing Rumswinkel
Alfons Zinsberger
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.)
BSH Hausgeraete GmbH
Original Assignee
Bosch Siemens Hausgerate 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 Bosch Siemens Hausgerate GmbH filed Critical Bosch Siemens Hausgerate GmbH
Priority to DE19813109250 priority Critical patent/DE3109250A1/en
Publication of DE3109250A1 publication Critical patent/DE3109250A1/en
Ceased legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/04Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation using electrically conductive adhesives
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00Baking; Roasting; Grilling; Frying
    • A47J37/06Roasters; Grills; Sandwich grills
    • A47J37/08Bread-toasters
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail

Abstract

The invention relates to an electric domestic appliance with casing parts which are made of an electrically conductive material and are connected to one another in an electrically conductive manner to provide protective electric earthing. Reliable earthing of the different conductive parts is to be achieved while keeping the outlay on production low. To achieve this, it is proposed that an electrically conductive adhesive compound be used as an electrically conductive connection. An electrically conductive cement, for example an organic silicone cement containing powdered metal or carbon as a filler, preferably serves as adhesive compound. The cement retains a certain degree of elasticity, even after it has hardened, which prevents breaking of the contact owing to thermal expansion. <IMAGE>

Description

ELektrisches Haushaltgerat mit Gchäusetc:ilen aus elektrischElectric household appliance with housing etc: ilen made of electric

leitendem Material Die Erfindung betrifft ein elektrisches Haushaltgerät mit Gehäuseteilen aus elektrisch leitendem Material die zur elektrischen Schutzerdung elektrisch leitend miteinander verbunden sind.conductive material The invention relates to an electrical household appliance with housing parts made of electrically conductive material for electrical protective grounding are electrically connected to each other.

Bei elektrischen Brotröstern müssen z.B. nicht nur die aus Metall bestehenden äußeren Gehäuseteile sondern auch die einzelnen, aus Blech bestehenden Wandelemente der Röstkammer einschließlich deren Boden sowie die vor den Heizkörpern angeordneten Schutzgitter geerdet sein, da sie durch den Brotein-Ansgaheschlitz entweder direkt oder mittels eines metallenen Gegenstandes wie z.B. einem Messer berührt werden können. Es bedeutet einen großen Fertigungsaufwand eine dauerhafte gut elektrisch leitende Verbindung der verschiedenen Metallteile untereinander herzustellen.In the case of electric bread toasters, for example, not only those made of metal have to be existing outer housing parts but also the individual ones made of sheet metal Wall elements of the roasting chamber including their floor and those in front of the radiators arranged protective grille, as it is through the Brotein-Ansgaheschlitz either directly or by means of a metal object such as a knife can be touched. It means a great manufacturing effort a permanent one Establish a good electrically conductive connection between the various metal parts.

Der Erfindung liegt die Aufgabe zugrunde bei einem elektrischen Haushaltgerät der eingangs beschriebenen Art eine zuverlässige Erdung bei niedrigem Fertigungsaufwand zu erzielen.The invention is based on the object of an electrical household appliance of the type described above, reliable grounding with low manufacturing costs to achieve.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß als elektrisch leitende Verbindung eine elektrisch leitende Haftmasse dient. AJs liaftmasse dient dabei vorzugsweise ein elektrisch leitender Kleber z.B. ein organischer Silikonkleber mit Metallpulver oder Kohlenstoff als Füllstoff. Dieser Kleber behält auch nach dem Aushärten eine gewisse Elastizität, was eine Unterbrechung des Kontaktes durch Wärmedehnungen verhindert.This object is achieved in that as an electrical conductive connection an electrically conductive adhesive compound is used. AJs air mass is used Preferably an electrically conductive adhesive, e.g. an organic silicone adhesive with metal powder or carbon as a filler. This glue also retains curing a certain elasticity, which leads to an interruption of contact Prevents thermal expansion.

Jedoch kann als Haftmasse auch eine elektrisch leitende Kontaktpaste verwendet werden, die pastös bleibt. Der vorstehend genannte Klebstoff sowie die Kontaktpaste haben den Vorteil, sehr temperaturbeständig zu sein.However, an electrically conductive contact paste can also be used as the adhesive compound be used, which remains pasty. The aforementioned adhesive as well as the Contact pastes have the advantage of being very temperature-resistant.

Die verbundenen Gehäuseteile besitzen vorteilhafterweise im Bereich der Verbiiidungss tel le etwa parallele Wandabschni tte, zwischen denen die Haftmasse flächig angeordnet ist, um einen grof3flächigcn leitenden Übergang und damit einen geringen Übergangswiderstand zu erzielen Die elektrisch leitende Klebverbindung kann auch eine mechanische Verbindung der Gehäuseteile sicherstellen, jedoch kann es alternativ für eine schnelle Montage auch vorteilhaft sein zusätzliche mechanische Verbindungsmittel wie z.B. Steckverbindungen mit geschränkten Blechlappen vorzusehen. Die Aushärtung des Klebstoffes erfordert dann keine Wartezeit und kann während der Montage tind der ansolil iet3endcn Lagerung erfolgen.The connected housing parts advantageously have in the area the connecting element has roughly parallel wall sections, between which the adhesive compound is arranged flat to a large-area conductive transition and thus a to achieve low contact resistance The electrically conductive adhesive connection can also ensure a mechanical connection of the housing parts, but can Alternatively, it can also be advantageous additional mechanical for quick assembly Provide connecting means such as plug connections with set sheet metal tabs. The curing of the adhesive then does not require any waiting time and can take place during the Assembly is carried out on the solid storage.

Es kann auch vorteilhaft sein, bei mechanischen Verbindungen, an denen bei der Montage die Oberflächen aneinander reiben und sich frei von einer Oxydschicht kratzen diese Verbindungsstelle durch eine Kontaktpaste, einen Kleber oder einen Lack gegen Luftzutritt und erneute Oxydation zu schützen, wobei vorzugsweise diese Verbindungsmittel gut elektrisch leitend sind.It can also be beneficial for mechanical connections where During assembly the surfaces rub against each other and become free of an oxide layer scratch this junction through a contact paste, an adhesive or to protect a varnish against the ingress of air and renewed oxidation, preferably these connecting means have good electrical conductivity.

Z.B. können die Oberflächen bei geeigneter Ausbildung einer Blechlappebverbindung beim Schränken der Blechlappen aufgekrazt werden Die vorstehend beschriebene Verbindung von Gehäuseteilen zum Zweck der Schutzerdung kann bei kleinen Haushaltgeräten wie Brotröstern, Eierkochern, Kaffeemaschinen, Grillgeräten usw.For example, if a sheet metal lobe connection is suitably formed, the surfaces can be scratched when setting the sheet metal tabs The connection described above of housing parts for the purpose of protective earthing can be used in small household appliances such as Bread toasters, egg boilers, coffee machines, grills, etc.

verwendet werden, jedoch vor allem auch den viele Blechteile aufweisenden Großgeräten wie Herde, Geschirrspüler, Waschmaschinen, Wäschetrockner, Bügelmaschinen usw., Im folgenden wird ein Ausfahrungsbeispiel der Erfindung anhand schematischer Zeichnungen näher erläutert.can be used, but above all the many sheet metal parts Large appliances such as stoves, dishwashers, washing machines, tumble dryers, ironing machines etc. In the following, an exemplary embodiment of the invention is illustrated schematically Drawings explained in more detail.

Es zeigt Fig. l eine Seitenansicht eines elektrischen Brotrösters; Fig. 2 ausschnittsweise einen Schnitt im wesentlichen entlang der Linie II-II in Fig. i und Fig. 3 ausschnittsweise einen Schnitt im wesentlichen entlang der Linie III-III in Fig. 2.1 shows a side view of an electric bread toaster; FIG. 2 shows a detail of a section essentially along the line II-II in FIG FIGS. 1 and 3 show a section essentially along the line III-III in Fig. 2.

D'r in den igu1'en dargeslei 1 Le elektrische Brotröster besitzt eine eine Röstkammer seitlich und oben umschließende Blechhaube 2, an die stirnseitig ein Steuergehäuse 4 aus Kunststoff und eine stirnseitige Abschlußwand (> aus Kunststoff anschließen.D'r in the igu1'en dargeslei 1 Le electric bread toaster has a a roasting chamber laterally and above enclosing sheet metal hood 2 on the front side a control housing 4 made of plastic and an end wall (> from Connect plastic.

Die Röstkammer wird im Inneren der Haube begrenzt durch einen Röstkammerboden q aus Blech und Röstkammerstirnwiinde 10 und 12 ebenfalls aus Blech, die beide' wif die gleiche Weise mit dem Röstkammerboden 8 verbunden sind Wie die Figuren 2 und 3 zeigen, besitzt die Stirnwand tO an ihrer Unterkante vorspringende Blechlappen 14 und 16 die durch entsprechend ausgestanzte Schlitze 18 und 20 in dem Röstkammerboden 8 greifen und darunter verschränkt sind um eine mechanische Verbindung herzustellen. Ein mittlerer freigestanzter Lappen 22 der Unterkante der Stirnwand 10 ist ins Innere der Röstkammer um 90 abgewinkelt und erstrecl<t sich parallel zum Röstkammerboden 8 in einem geringen Abstand über diesem. Bei der Montage ist zwischen den freigestanzten Lappen 22 und den Röstkammerboden 8 eine Kiebstoffschicht 24 aufgetragen worden, die den Lappen 22 und den Riistkammerboden 8 flächig haftend verbindet. Als Klebstoff dient ein elektrisch gut leitender Silikonkleber mit Metallpulver oder Kohlenstoff als Füllstoff um einen guten elektrischen Kontakt zwischen diesen Teilen herzustellen. Der Röstkammerboden 8 besitzt benachbart dem Steuergehäuse 4 einen nicht dargestellten Erdungsanschluß mittels eines angenieteten Leitungsdrahtes.The roasting chamber is limited inside the hood by a Roasting chamber floor q made of sheet metal and roasting chamber front windings 10 and 12 also made of sheet metal, both of which ' wif are connected to the roasting chamber floor 8 in the same way as in FIGS 1 and 3 show, the end wall t0 has projecting sheet metal tabs on its lower edge 14 and 16 through correspondingly punched-out slots 18 and 20 in the roasting chamber floor 8 grab and are interlaced underneath to establish a mechanical connection. A central punched-out tab 22 of the lower edge of the end wall 10 is in the interior the roasting chamber angled by 90 and extends parallel to the roasting chamber floor 8 at a short distance above this. During assembly is punched out between the Cloth 22 and the roasting chamber floor 8 a layer of adhesive 24 has been applied, which connects the flap 22 and the Riistkammerboden 8 flat adhesive. As an adhesive an electrically conductive silicone adhesive with metal powder or carbon is used as a filler to create a good electrical contact between these parts. The roasting chamber floor 8 has a not shown adjacent to the control housing 4 Earth connection by means of a riveted conductor wire.

In Abwandlung der vorstehenden Austührungsform können die Blcchlappen 14 und 16 ungeschränkt bleiben, da die Klebstoffschicht 24 nach einer gewissen Abbindezeit eine mechanische Verbindung zwischen der Stirnwand 10 und dem Boden 8 herstellt. Wird die mechanische Verbindung durch geschränkte Blechlappen oder andere Verbindungstechniken hergestellt, so kann anstelle des elektrisch leitenden Klebers 24 auch eine dauerhaft pastöse elektrisch leitende Kontak tpas Le verwendet werden.In a modification of the above embodiment, the flaps can 14 and 16 remain unrestricted, since the adhesive layer 24 after a certain setting time establishes a mechanical connection between the end wall 10 and the floor 8. The mechanical connection is made using set sheet metal tabs or other connection techniques produced, instead of the electrically conductive adhesive 24, a permanent one can also be used pasty electrically conductive Kontak tpas Le can be used.

L e e r s e i t eL e r s e i t e

Claims (5)

Ansprüche 1. Elektrisches Haushaltgerät mit Gehäuseteilen aus elektrisch leitendem Material, die zur elektrischen Schutzerdung elektrisch leitend miteinander verbunden sind, d a d u r c h g e k e n n z e i c h n e t , daß als elektrisch leitende Verbindung eine elektrisch leitende Haftmasse (24) dient. Claims 1. Electrical household appliance with housing parts made of electrical conductive material that are electrically conductive to each other for electrical protective grounding are connected, d u r c h e k e n n n z e i c h n e t that as electrically conductive Connection an electrically conductive adhesive compound (24) is used. 2. Haushaltgerät nach Anspruch 1, dadurch gekennzeichnet, daß als Haftmasse ein elektrisch leitender Kleber (24) mit Metallpulver oder Kohlenstoff als Füllstoff dient. 2. Household appliance according to claim 1, characterized in that as Adhesive compound an electrically conductive adhesive (24) with metal powder or carbon serves as a filler. 3. Haushaltgerät nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, daß als Haftmasse eine elektrisch leitende Kontaktpaste dient. 3. Household appliance according to claim 1 and / or 2, characterized in that that an electrically conductive contact paste is used as the adhesive. 4. Haushaltgerät nach einem der AnsprUche 1 bis 3, dadurch gekennzeichnet, daß die verbundenen Gehäuseteile im Bereich der Verbindungsstelle etwa parallele Wandabschnitte (8,22) auSweisen, zwischen denen die llaftmasse (24) flächig angeordnet ist. 4. Household appliance according to one of claims 1 to 3, characterized in that that the connected housing parts in the area of the junction are approximately parallel Show wall sections (8, 22), between which the oil mass (24) is arranged over a large area is. 5. Haushaltgerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die verbundenen Gehäuseteile eine mechanische Verbin(lung z.B. in Vorm einer BIechI appenvcrbindun (14 bis 2()) aufweisen. 5. Household appliance according to one of claims 1 to 4, characterized in that that the connected housing parts have a mechanical connection, e.g. in front of a BIechI appenvcrbindun (14 to 2 ()).
DE19813109250 1981-03-11 1981-03-11 Electric domestic appliance with casing parts made of an electrically conductive material Ceased DE3109250A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813109250 DE3109250A1 (en) 1981-03-11 1981-03-11 Electric domestic appliance with casing parts made of an electrically conductive material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813109250 DE3109250A1 (en) 1981-03-11 1981-03-11 Electric domestic appliance with casing parts made of an electrically conductive material

Publications (1)

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DE3109250A1 true DE3109250A1 (en) 1982-10-28

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DE19813109250 Ceased DE3109250A1 (en) 1981-03-11 1981-03-11 Electric domestic appliance with casing parts made of an electrically conductive material

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0290688A1 (en) * 1987-05-11 1988-11-17 Staeng Ltd. Adaptors
EP0377063A1 (en) * 1989-01-04 1990-07-11 Siemens Aktiengesellschaft Arrangement, e.g. for LCD control in a motor vehicle board computer, for electrically connecting the terminal tabs of two boards with a printed-circuit film
FR2750538A1 (en) * 1996-06-27 1998-01-02 Soprano Metal envelope for electronic equipment
WO1999045610A1 (en) * 1998-03-04 1999-09-10 BSH Bosch und Siemens Hausgeräte GmbH Household appliance
DE19851166A1 (en) * 1998-11-06 2000-05-11 Hermann Otto Gmbh A foamable electricity and heat conducting sealant and adhesive useful for sealing and adhesive bonding of electronic equipment and mobile phone housings has higher electrical conductivity than a non-in situ foam
DE102015214628A1 (en) 2015-07-31 2017-02-02 BSH Hausgeräte GmbH Heating device for a household appliance

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0290688A1 (en) * 1987-05-11 1988-11-17 Staeng Ltd. Adaptors
EP0377063A1 (en) * 1989-01-04 1990-07-11 Siemens Aktiengesellschaft Arrangement, e.g. for LCD control in a motor vehicle board computer, for electrically connecting the terminal tabs of two boards with a printed-circuit film
FR2750538A1 (en) * 1996-06-27 1998-01-02 Soprano Metal envelope for electronic equipment
WO1999045610A1 (en) * 1998-03-04 1999-09-10 BSH Bosch und Siemens Hausgeräte GmbH Household appliance
DE19851166A1 (en) * 1998-11-06 2000-05-11 Hermann Otto Gmbh A foamable electricity and heat conducting sealant and adhesive useful for sealing and adhesive bonding of electronic equipment and mobile phone housings has higher electrical conductivity than a non-in situ foam
DE19851166C2 (en) * 1998-11-06 2000-11-30 Hermann Otto Gmbh Foamable, electrically and thermally conductive sealants and adhesives, processes for production and their use
DE102015214628A1 (en) 2015-07-31 2017-02-02 BSH Hausgeräte GmbH Heating device for a household appliance
WO2017021075A1 (en) 2015-07-31 2017-02-09 BSH Hausgeräte GmbH Heating device for a domestic appliance

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