WO2014016136A1 - Appareil ménager doté d'une surface tactile - Google Patents

Appareil ménager doté d'une surface tactile Download PDF

Info

Publication number
WO2014016136A1
WO2014016136A1 PCT/EP2013/064709 EP2013064709W WO2014016136A1 WO 2014016136 A1 WO2014016136 A1 WO 2014016136A1 EP 2013064709 W EP2013064709 W EP 2013064709W WO 2014016136 A1 WO2014016136 A1 WO 2014016136A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing element
electrical circuit
household appliance
contact surface
electrically conductive
Prior art date
Application number
PCT/EP2013/064709
Other languages
German (de)
English (en)
Inventor
Andreas Bayer
Christian Duscher
Franz STERN
Christian Wirth
Original Assignee
BSH Bosch und Siemens Hausgeräte 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 BSH Bosch und Siemens Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Publication of WO2014016136A1 publication Critical patent/WO2014016136A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960755—Constructional details of capacitive touch and proximity switches
    • H03K2217/96076—Constructional details of capacitive touch and proximity switches with spring electrode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960785—Capacitive touch switches with illumination

Definitions

  • the present invention relates to a household appliance with a contact surface.
  • the document DE 10 2005 008 758 A1 describes, for example, a capacitive proximity and / or touch switch, with an electrically conductive, wound from a stretched body compression spring, which is arranged between an electrically insulating cover plate and a support plate. It is the object of the present invention to provide reliable detection of a
  • the object is achieved by a household appliance, in particular water-conducting household appliance, with a contact surface, with a
  • the sealing element for example, the technical advantage is achieved that reduces the technical complexity due to a loss of additional coupling elements, while the electrical circuit is protected at the same time from environmental influences.
  • a connection of the electrical circuit, such as a printed circuit board, can be solved via a housing assembly, so that reduces assembly costs in manufacturing.
  • the sealing element may be part of a housing in which the electrical circuit, for example in the form of a printed circuit board,
  • a household appliance is a device that is used for household management. This can be a large household appliance, such as a
  • Washing machine a tumble dryer, a dishwasher, a cooking appliance, an extractor hood or a refrigerator, such. a refrigerator, a freezer or a fridge-freezer. But this can also be a small household appliance, such as a water heater, a coffee machine, a food processor or a vacuum cleaner.
  • the household appliance may be a water-conducting household appliance, for example a dishwasher or a washing machine.
  • the electrical circuit is designed to detect the contact of the contact area capacitively.
  • the technical advantage is achieved that a detection of a contact can be carried out particularly reliably by the use of the electrically conductive sealing element.
  • the household appliance has the
  • the technical advantage is achieved, for example, that improves the detection of a touch.
  • the electrically conductive sealing element is electrically conductive on one side and electrically non-conductive on the other side.
  • the technical advantage achieved that an additional protection against the grid potential is given, so that can be dispensed with a galvanic isolation.
  • the electrically conductive sealing element has an electrically conductive portion in the interior.
  • the technical advantage is achieved, for example, that the conductive portion is electrically insulated from the outside of the sealing element and a galvanic
  • Sealing element a luminous element for emitting light. This will
  • Light element a light emitting diode.
  • the technical advantage is achieved that a particularly suitable and energy-saving light source is used.
  • Sealing element transparent.
  • the technical advantage is achieved that a brightness of a backlighting increases.
  • the electrical circuit is arranged in a housing.
  • the technical advantage is achieved that the electrical circuit is protected from environmental influences.
  • the housing is made of a material with two components.
  • the technical advantage ensures that the housing is particularly resistant to
  • the housing has an opening for the sealing element.
  • the sealing element is connected to the housing by an injection molding process.
  • Seal element be molded onto the housing. This is not necessary
  • Seal member formed of a conductive elastomer As a result, for example, the technical advantage is achieved that a good sealing effect by the
  • the elastomer comprises silicone.
  • the technical advantage is achieved that a particularly suitable material is used to produce a seal.
  • the conductive elastomer comprises carbon particles, graphite particles, aluminum particles, copper particles or silver particles.
  • FIG. 1 is a schematic representation of a household appliance
  • FIG. 2 shows a schematic representation of a detection device for detecting a contact with a coupling element
  • a schematic representation of a detection device for detecting a contact with an electrically conductive seal is shown in FIG. 1 .
  • Fig. 1 shows a household appliance 100 in which the present invention can be used.
  • the household appliance 100 is in this case a refrigerator with an upper
  • Refrigeration appliance door 103 and a lower refrigerator door 105 The refrigerator is used for example for cooling food and includes a refrigerant circuit with an evaporator, a compressor, a condenser and a throttle body.
  • the evaporator is a heat exchanger in which after expansion the liquid
  • Refrigerant by heat absorption from the medium to be cooled, i. the air inside the refrigerator is evaporated.
  • the compressor is a mechanically operated component, the refrigerant vapor from the
  • the condenser is a heat exchanger in which, after compression, the vaporized refrigerant is released by heat release to an external cooling medium, i. the ambient air is liquefied.
  • the throttle body is a device for the continuous reduction of the pressure by cross-sectional constriction.
  • the refrigerant is a fluid used for heat transfer in the cryogenic system which absorbs heat at low temperatures and low pressure of the fluid and releases heat at higher temperature and pressure of the fluid, usually including changes in state of the fluid.
  • the upper door 103 opens an upper refrigeration compartment, while the lower door 105, for example, opens a 0 ° C compartment. In the two subjects, different temperatures prevail. In order to operate the refrigeration device efficiently, the cold air inside the
  • Refrigerating device are circulated.
  • a touch panel 107 is arranged, via which a user can control different functions of the refrigerator. At different Places inside the refrigerator occurs, for example, condensation or
  • Fig. 2 shows an exemplary, schematic representation of a possible
  • Detecting device 200 for detecting a contact with a sealing member 207, in which a coupling element 209 is used.
  • the detection device 200 has a contact surface 201 at which a touch is detected. The touch occurs, for example, by placing a finger and can be used to control the
  • Household appliance 100 serve.
  • the detection of the contact is made by the electrical circuit 203, which can detect the touch, for example, based on a change in capacitance with the finger on.
  • the electrical circuit 203 of the detection device 200 is located in a housing 21 1 with a non-conductive sealing element 207, via which the electrical circuit 203 is sealed to the outside. Behind the sealing member 207 is a light-emitting element 205, for example, a touch of the
  • Detection device on an electrically conductive coupling element 209 which introduces a capacitive coupling to the contact surface.
  • the coupling element 209 partially bridges the distance between the user and the electrical circuit 203.
  • the coupling element may be formed, for example, by a metal spring. It is an object of the invention to simplify the structure of the detection device and to allow reliable detection of contact with an electrical circuit, which is protected from environmental influences and water.
  • FIG. 3 shows a schematic representation of a detection device 300 for detecting a contact with an electrically conductive seal 307.
  • the detection device 300 includes an electrical circuit 303 for electrically detecting a touch of the touch surface 301.
  • Seal member 307 is disposed between the contact surface 301 and the electric circuit 303.
  • the electrical circuit 303 may be formed, for example, on a circuit board or a printed circuit board.
  • the circuit 303 may capacitively detect a touch on the touch surface 301. In this type of detection, the change of an electric field in the
  • the electrical circuit 303 operates, for example, with an RC oscillator.
  • the electrical circuit measures, for example, the capacitance between the contact surface 301 and the electrical ground potential. The approach or touch of a finger changes the
  • a trigger stage downstream of the RC oscillator can be tilted so that a switching amplifier in the electrical circuit 303 changes its initial state.
  • the sensitivity of the electrical circuit 303 can be adjusted, for example, with a potentiometer, for example to set the desired
  • the sealing member 307 has a conductive electrical connection to the electrical circuit 303.
  • Sealing element 307 may be placed or glued to the circuit board.
  • the sealing member 307 may also be designed such that it is pressed by the housing 31 1 on the electrical circuit and so creates a conductive pressure connection.
  • the sealing member 307 may have a non-illustrated peripheral edge which is located between the housing 31 1 and the electrical circuit 303. In this case, the advantage is achieved that an electrical connection to the electrical circuit 303 in the assembly of the housing 31 1 is made.
  • the sealing element 307 may be formed hood-shaped or cylindrical. Further, the electrically conductive sealing member 307 may be electrically conductive on one side and electrically non-conductive on the other side or a having electrically conductive structure. In particular, in the electrically conductive sealing element 307 inside an electrically conductive portion may be arranged, which is isolated from the outside of the sealing element 307. As a result, a galvanic separation can be achieved, so that the outside of the sealing element is non-conductive.
  • the contact surface 301 may be formed by a non-conductive plastic panel or a glass panel. In general, however, other materials may be used. It is particularly advantageous if the sealing element 307 surrounds a luminous element 305 for emitting light.
  • the light-emitting element 305 can be formed, for example, by a light-emitting diode.
  • the sealing member 307 may be transparent or semitransparent.
  • the sealing member 307 may include scattering centers, so that the light emitted from the lighting member 305 is diffused in diffuse directions.
  • the housing 31 1 is formed so as to surround the electric circuit 303.
  • the housing 31 1 may for example be made of plastic or of a material with two components (2K material). In general, however, other suitable materials may be used. Particularly suitable are thermoplastic elastomers (TPE materials). These, for example, can be used in combination with acrylonitrile-butadiene-styrene (ABS).
  • TPE materials thermoplastic elastomers
  • ABS acrylonitrile-butadiene-styrene
  • an opening 313 is provided for the sealing member 307.
  • the opening 303 may, for example, in
  • Cross-section be circular.
  • Seal member 307 can be used. However, the sealing element 307 can also be molded onto the housing 31 1.
  • the sealing member 307 may be formed of a conductive elastomer.
  • a conductive elastomer When using an elastomer, there is the advantage that a good sealing effect against moisture or contamination is achieved.
  • a particularly suitable elastomer is, for example, silicone.
  • silicone hoods can be used.
  • These sealing elements can also partially to the scattering of the LED light can be used for displays, for example for symbol backlighting. In general, however, other materials can be used by which a sealing effect can be achieved.
  • the elastomer may contain carbon particles
  • the conductivity of the elastomer can be made by other means and in other ways.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Electronic Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

L'invention concerne un appareil ménager (100), en particulier un appareil ménager aquifère, équipé d'une surface tactile (301), d'un circuit électronique (303), servant à la détection électrique d'un toucher de la surface tactile (301), et d'un élément d'étanchéité électroconducteur (307) placé entre la surface tactile (301) et le circuit électrique (303) pour étanchéifier le circuit électrique.
PCT/EP2013/064709 2012-07-24 2013-07-11 Appareil ménager doté d'une surface tactile WO2014016136A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012212933.2 2012-07-24
DE102012212933.2A DE102012212933A1 (de) 2012-07-24 2012-07-24 Haushaltsgerät mit einer Berührungsfläche

Publications (1)

Publication Number Publication Date
WO2014016136A1 true WO2014016136A1 (fr) 2014-01-30

Family

ID=48771461

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/064709 WO2014016136A1 (fr) 2012-07-24 2013-07-11 Appareil ménager doté d'une surface tactile

Country Status (2)

Country Link
DE (1) DE102012212933A1 (fr)
WO (1) WO2014016136A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1030410B1 (de) * 2022-03-30 2023-10-30 Miele & Cie Bedienvorrichtung für ein Haushaltsgerät und Haushaltsgerät mit einer Bedienvorrichtung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019215461A1 (de) * 2019-10-09 2021-04-15 BSH Hausgeräte GmbH Bauteil für ein kapazitives Bedienelement, kapazitives Bedienelement und Haushaltsgerät

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5917165A (en) * 1997-02-17 1999-06-29 E.G.O. Elektro-Geraetebau Gmbh Touch switch with flexible, intermediate conductive spacer as sensor button
DE102004026672A1 (de) * 2004-05-28 2005-12-29 Schott Ag Berührungsschalteinrichtung
DE102005008758A1 (de) 2004-09-29 2006-04-13 BSH Bosch und Siemens Hausgeräte GmbH Kapazitiver Annäherungs- und/oder Berührungsschalter
EP2355356A1 (fr) * 2010-02-04 2011-08-10 Diehl AKO Stiftung & Co. KG Commutateur de contact et/ou de rapprochement capacitif
US20120126834A1 (en) * 2009-07-28 2012-05-24 E.G.O. Elektro-Geratebau Gmbh Sensor Element Device and Method for Producing a Molded Body of a Sensor Element Device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19706168A1 (de) * 1997-02-17 1998-08-20 Ego Elektro Geraetebau Gmbh Berührungsschalter mit Sensortaste
DE10123633A1 (de) * 2001-05-09 2003-02-06 Ego Elektro Geraetebau Gmbh Sensorelement
DE102004060846B4 (de) * 2004-12-17 2008-12-18 Diehl Ako Stiftung & Co. Kg Kapazitiver Berührungsschalter
DE102008052816B4 (de) * 2008-10-13 2015-11-26 E.G.O. Control Systems Gmbh Bedieneinrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5917165A (en) * 1997-02-17 1999-06-29 E.G.O. Elektro-Geraetebau Gmbh Touch switch with flexible, intermediate conductive spacer as sensor button
DE102004026672A1 (de) * 2004-05-28 2005-12-29 Schott Ag Berührungsschalteinrichtung
DE102005008758A1 (de) 2004-09-29 2006-04-13 BSH Bosch und Siemens Hausgeräte GmbH Kapazitiver Annäherungs- und/oder Berührungsschalter
US20120126834A1 (en) * 2009-07-28 2012-05-24 E.G.O. Elektro-Geratebau Gmbh Sensor Element Device and Method for Producing a Molded Body of a Sensor Element Device
EP2355356A1 (fr) * 2010-02-04 2011-08-10 Diehl AKO Stiftung & Co. KG Commutateur de contact et/ou de rapprochement capacitif

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1030410B1 (de) * 2022-03-30 2023-10-30 Miele & Cie Bedienvorrichtung für ein Haushaltsgerät und Haushaltsgerät mit einer Bedienvorrichtung
EP4254800A3 (fr) * 2022-03-30 2023-12-06 Miele & Cie. KG Dispositif de commande pour un appareil ménager et appareil ménager doté d'un dispositif de commande

Also Published As

Publication number Publication date
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