EP1695035A2 - Dispositif de commande - Google Patents

Dispositif de commande

Info

Publication number
EP1695035A2
EP1695035A2 EP04803944A EP04803944A EP1695035A2 EP 1695035 A2 EP1695035 A2 EP 1695035A2 EP 04803944 A EP04803944 A EP 04803944A EP 04803944 A EP04803944 A EP 04803944A EP 1695035 A2 EP1695035 A2 EP 1695035A2
Authority
EP
European Patent Office
Prior art keywords
sensor element
operating
cover
area
operating device
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.)
Withdrawn
Application number
EP04803944A
Other languages
German (de)
English (en)
Inventor
Lutz Ose
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau 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 EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Publication of EP1695035A2 publication Critical patent/EP1695035A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • 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
    • H03K17/964—Piezoelectric 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
    • H03K2217/96042—Touch switches with illumination

Definitions

  • the invention relates to an operating device for an electrical device according to the preamble of claim 1.
  • EP-A 859 467 it is known from EP-A 859 467 to create a capacitive touch switch with a sensor element made of porous, electrically conductive plastic. This sensor element rests on the underside of a glass ceramic surface. If a finger is placed on the glass ceramic surface above the sensor element, the capacitance of the sensor element changes, which can be evaluated as operation.
  • So-called membrane keyboards are also known. These work on the principle of an electrical contact, with one contact on a base plate and another contact on the inside of a slightly curved film. By lightly pressing the film, the two contacts are moved towards each other and the switch is closed. However, there is the problem that such electrical contacts are often subject to corrosion. In continuous operation, there is a risk that the contacts will deteriorate and at some point an operating device will no longer work.
  • the invention has for its object to provide an operating device mentioned at the beginning with which the disadvantages of the prior art can be avoided and in particular an operating device. direction or a switch can be created, the evaluation of which is as prone to failure as possible and whose function and safety is guaranteed for a very long time.
  • the operation takes place by pressing on a shape-changing or elastic operating area.
  • This operating area has a sensor element or a sensor element is assigned to it, with the sensor element being pressed for operation.
  • This press is evaluated as an operation.
  • the sensor element consists of a plastic material which is porous or foam-like and which emits an electrical signal when the volume changes. By pressing, the volume of the sensor element changes, so that the pressing can be converted more or less directly into an electrical signal. In this way, electrical contacts, which are closed during operation as with a switch, can be avoided.
  • a different functional principle is used than for sensor elements which change electrical properties, such as their electrical resistance, due to pressure and the resulting change in volume.
  • Such sensor elements are to be regarded as purely passive sensor elements, a sensor element according to the invention being a type of electromechanical transducer. It should be noted, however, that only the conversion of pressure into an electrical signal is used.
  • the plastic material is advantageously a cellular polymer, although it can also be a polymer foam. As a foamed material, it also contains pores or is similar to porous. In particular, such a polymer can contain PTFE or it can consist entirely of it. If such a plastic material is electrically charged, plus poles and minus poles, which lie opposite one another, form in the pore walls. By pressing, the pore walls and thus the plus and minus poles come closer, whereupon an electrical signal is emitted. This electrical signal can be processed with a corresponding evaluation, for example also with a signal amplification, and recognized as an operator control and passed on to a controller or the like.
  • the plastic material can be manufactured in a flat form or as a flat material. For this purpose, it can be stretched, preferably biaxially stretched.
  • a block-like sensor element As an alternative to a block-like sensor element, it can be designed as a thin flat material.
  • the thickness can be less than one millimeter, preferably even less than 100 ⁇ m. Widths or lengths can be in the range of a few mm or cm.
  • Such a sensor element is advantageously contacted via one or more contact surfaces, which should be highly electrically conductive and can be, for example, metal in the form of a thin layer or foil. These contact areas are advantageously only to the sensor element without penetrating it. In this way, thin sensor elements can also be implemented and contacted.
  • Two spaced surfaces can advantageously be provided as contact points, which are arranged in particular on opposite points or sides of the sensor element. The contact points are advantageously connected to a charging device for the sensor element. The sensor element can thus be recharged at certain time intervals or after a certain number of operations.
  • the plastic material advantageously has piezoelectric properties.
  • a piezoelectric coefficient is advantageously in the range from 100 to 1000 pC / N. These properties can be somewhat reversible or have hysteresis loops similar to those of ferroelectric materials.
  • One of the advantages of such plastic materials compared to piezoceramics is that they are more elastic and can therefore be used more easily and for other purposes.
  • a sensor element can be freely accessible. It forms the operating area itself or an area of it. It can therefore be operated directly by pressing the sensor element, for example with a finger.
  • a sensor element under a cover, which is movable.
  • the operation is passed on to the sensor element in the form of pressing on, which in turn compresses it.
  • a cover protects a sensor element from damage or wear.
  • a cover can be elastically movable, that is, in itself.
  • it can be designed as an area of an operating panel that is thinner than its surroundings and can therefore be depressed to a limited extent.
  • it is possible to design the cover or the operating area to be articulated and movable. This is also advantageous, for example, in applications with a higher pressure to be expected.
  • a joint can also be designed as a film joint.
  • an operating device to provide a sensor element with a recess or an opening.
  • Illuminants can be arranged therein or project through or shine through, for example LEDs, and mark a location for the operation or the operating area.
  • a cover is provided above the sensor element, but it is translucent or transparent. Such lighting of the operating area can also transmit information to an operator in a pure marking for better meeting, for example about possible or successful operations.
  • an operating device it is possible for an operating device to have a plurality of operating areas which are provided for different operations or advantageously different functions.
  • the aforementioned sensor elements or touch switches can be replaced.
  • a common control for several operating areas with different functions it is possible to have a common control for several operating areas with different functions. to provide the same material layer from the plastic material.
  • This can be viewed as a type of common sensor element, which is, however, divided into several sensor element areas.
  • One sensor element area is assigned to one operating area and forms a kind of separate sensor element.
  • a one-piece sensor element mat or the like can be provided for several operating areas, which is easier to handle during manufacture and assembly.
  • sensor element areas are provided on a single part, it is advantageous to separate them from one another by means of recesses and incisions or material dilutions. These material dilutions are particularly advantageously provided on the side facing the operating area. In this way, pressure that is exerted on one sensor element area is not transferred to adjacent areas.
  • an operating area can be decorated or have a decor or a print.
  • a so-called tactile structure is also possible, which results in a special sensation when touched.
  • Fig. 1 different side sections through control devices, to 6, wherein the sensor element is partly above and partly under a cover and partially protrudes.
  • FIG. 1 shows a side version of a first version of an operating device 1 according to the invention. It has an operating area 13, which is formed by a thin sensor element 15 on a cover 17. While the thin sensor element has a thickness of 1 mm, for example, and is elastic due to the material properties of the porous or foam-like material, the cover 17 underneath can be several millimeters thick and, above all, be essentially rigid or non-compliant. For example, it can be a so-called control panel of an electrical household appliance, for example a hob, an oven, a dishwasher or a clothes dryer.
  • an electrical household appliance for example a hob, an oven, a dishwasher or a clothes dryer.
  • This conductor can be routed to a controller, not shown, which a possible actuation of the sensor element 15 registered. This is described below.
  • the sensor element can also be recharged in this way, as described above.
  • FIG. 2 shows, as a modification of FIG. 1, an operating device 111, in which a sensor element 115 is in turn arranged on a cover 117 and thus forms an operating area 11.
  • the only electrical connection contact 119 is passed through an opening 121 through the cover 117 and runs, for example, to a corresponding control. So here the electrical connection runs through the cover.
  • the area of the connection contact 119 is approximately as large as the entire sensor element 115, but this is only one possibility.
  • FIG. 3 shows an operating device 211 which has a cover 217 and an operating area 213.
  • the operating area 213 is provided on the top of a thinner area 217a of the cover. Beneath this thinner area 217a, which is formed by a recess 221 underneath, is a sensor element 215, which is very thin, similar to the previous figures, for example a few 100 ⁇ m.
  • the sensor element 215 rests on the underside of the thin region 217a and at the same time rests on a base plate 218. While the thinner area 217a can be pressed down by light finger pressure and thus exerts pressure on the sensor element 215, the base plate 218 is rigid, stationary and immovable. The contact is made via the two contacts 219 and 220. These are similar to those described above.
  • the base plate 218 has an opening 222.
  • a breakthrough 223 is provided in the sensor element 215 in its upward extension. Another such breakthrough can be in the cover 217 or in the thin region 217a.
  • the thin region 217a can be designed to be translucent, so that light can pass through the LED 225 arranged under the base plate 218 and shining through the openings. In this way, an operator can be shown where the operating area 213 is located.
  • information can be displayed, for example in the form of a symbol or by a special, for example flashing, type of display.
  • glow lamps can also be provided, as well as seven-segment displays for larger breakthroughs.
  • LED 225 glow lamps can also be provided, as well as seven-segment displays for larger breakthroughs.
  • the base plate 218 and cover 217 or thin region 217a more translucent and to cut out the sensor element 215 only in the region of the segments of the seven-segment display.
  • FIG. 4 shows a modification of FIG. 3.
  • An operating device 311 in turn has a cover 317, a recess 321 being provided. This is covered at the top by a thin area 317a. This is, for example, rectangular and connected to the rest of the cover 317 on one side, pointing to the left in FIG. 4, via a type of film hinge 317b.
  • the film hinge 317b can also be designed as an area that can be made even thinner than the thin area 317a for greater mobility. It is functionally essential that the thin area 317a is movable in the area of the film hinge 317b or an alternative means. This forms the operating area 313 and passes an operating pressure on to the sensor element 315 through an operator's finger 330.
  • connection contact 320 This in turn is pressed against a base plate 318 and thus outputs the electrical signal corresponding to the change in volume via a right-hand connection contact 320, which is arranged under the sensor element 315. at In such an arrangement, it is recommended for better mobility to cut out the contours of the thin region 317a to the film hinge 317b or to provide it with a slight gap.
  • the left connection contact 319 rests on the top of the sensor element 315.
  • the sensor element is located between the two connection contacts 319, 320, and it can be recharged in order to then release this charge by pressing as an operator.
  • FIG. 5 shows a further operating device 411, in which a sensor element 415 extends through a cover 417 from below.
  • a sensor element 415 extends through a cover 417 from below.
  • an opening 421 is provided in the cover 417.
  • the sensor element 415 protrudes through it, which is arranged on a rigid and immovable base plate 418 and is designed to be electrically contactable with the connection contacts 419 and 420.
  • the opening 421 can either be slightly larger than the sensor element 415 and the base plate 418, so that a thin gap is present. Alternatively, a fit that is as precise as possible can be provided.
  • the sensor element 415 can overlap the base plate 418, which is only slightly smaller than the opening 421, on all sides. If the base plate 418 is then introduced into the opening 421, the sensor element 415 stretches over it, so to speak, and on the one hand lies taut on the base plate 418. Furthermore, the opening 421 is sealed at the bottom.
  • this print 427 can show information for an operator, for example with regard to a function that can be triggered by the operation at this point.
  • the printing 427 can be applied in different ways, which also depends on the design of the sensor element 415 or the corresponding plastic material.
  • the cover can also be a sticker, for example, or a light structure that can be seen or felt.
  • FIG. 6 shows an operating device 511 in which a sensor element 515 is block-like with a thickness that goes considerably beyond that of the sensor elements in the other figures and is in particular a few millimeters, for example 10 to 15 mm.
  • the sensor element 515 projects upwards and rises far above the cover.
  • an operating area 513 can be created which is considerably higher than the cover 516 and which is, so to speak, very exposed. Otherwise, the sensor element 515 rests on a rigid base plate 518 with electrical connection contacts 519 and 520.
  • the basic function of the sensor elements 15 to 515 is the same for all operating devices 11 to 511. If, for example, pressure is exerted on the operating area 13 to 513 by applying a finger 330, an electrical signal is generated in the plastic material of the sensor elements due to the special properties mentioned at the beginning. This can be recorded via a control device or an evaluation. The strength of the electrical signal depends on the strength of the pressure or the change in volume of the sensor element due to the pressure, the special material properties, the thickness of the sensor element and possibly the previous charging of the sensor element. A response threshold can thus be set using these factors. For some applications, it may be necessary to recharge the sensor element electrically from time to time.
  • connection contact there may be a second one in addition to the electrical connection contact shown in each case distant, preferably opposite, connection contact provided, charging should not be possible via the connection contacts used for detection.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Push-Button Switches (AREA)
  • Central Heating Systems (AREA)

Abstract

L'invention concerne un dispositif de commande (311) destiné, par exemple, à un appareil électrique domestique et comprenant un revêtement (317) réalisé très mince et flexible dans une zone (317a). Sous ce revêtement se trouve un élément capteur (315) en matière plastique spéciale, qui est comprimé en cas de pression sur la zone mince (317a), modifie son volume et émet un signal électrique lors de cette variation de volume. La matière plastique utilisée est de préférence une mousse polymère chargée électriquement contenant du PTFE. Le signal électrique est évalué en tant que commande.
EP04803944A 2003-12-17 2004-12-16 Dispositif de commande Withdrawn EP1695035A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10361350A DE10361350A1 (de) 2003-12-17 2003-12-17 Bedieneinrichtung
PCT/EP2004/014331 WO2005059935A2 (fr) 2003-12-17 2004-12-16 Dispositif de commande

Publications (1)

Publication Number Publication Date
EP1695035A2 true EP1695035A2 (fr) 2006-08-30

Family

ID=34673073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04803944A Withdrawn EP1695035A2 (fr) 2003-12-17 2004-12-16 Dispositif de commande

Country Status (3)

Country Link
EP (1) EP1695035A2 (fr)
DE (1) DE10361350A1 (fr)
WO (1) WO2005059935A2 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005053928B4 (de) * 2005-11-11 2018-11-15 BSH Hausgeräte GmbH Bedienelement für Haushaltsgerät
FI20060396A0 (fi) * 2006-04-25 2006-04-25 Teknillinen Korkeakoulu Tasopinta ja siihen integroitu pinta kuten näyttöpinta
DE102006030548A1 (de) * 2006-07-03 2008-01-17 BSH Bosch und Siemens Hausgeräte GmbH Gleitstreifen
EP2048781B1 (fr) * 2007-10-08 2018-06-13 Whirlpool Corporation Interrupteur tactile pour appareils électriques et appareil électrique doté d'un tel interrupteur
DE102009033538A1 (de) 2009-07-09 2011-01-13 E.G.O. Elektro-Gerätebau GmbH Bedieneinrichtung für ein Elektrogerät
DE102009047510B3 (de) 2009-12-04 2011-05-19 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät mit einer Bedieneinrichtung und Verfahren zum Bedienen eines Haushaltsgeräts
FR2963839B1 (fr) * 2010-08-13 2012-08-17 Delphi Tech Inc Panneau de commande comportant une touche resistive
DE102011006021A1 (de) 2011-03-24 2012-09-27 E.G.O. Elektro-Gerätebau GmbH Bedieneinrichtung für ein Elektrogerät
US9100022B2 (en) * 2012-03-23 2015-08-04 Touchsensor Technologies, Llc Touch responsive user interface with backlit graphics
DE102018108299B4 (de) * 2018-04-09 2019-12-12 Dr. Schneider Kunststoffwerke Gmbh Bedieneinrichtung
JP7122884B2 (ja) * 2018-06-25 2022-08-22 リンナイ株式会社 加熱調理器
CN111522462A (zh) 2020-04-15 2020-08-11 业成科技（成都）有限公司 压力感应显示模组及面板

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US4654546A (en) * 1984-11-20 1987-03-31 Kari Kirjavainen Electromechanical film and procedure for manufacturing same
CH681670A5 (fr) * 1991-03-05 1993-04-30 Dynalab Ag
US5225959A (en) * 1991-10-15 1993-07-06 Xerox Corporation Capacitive tactile sensor array and method for sensing pressure with the array
FI97577C (fi) * 1994-12-28 1997-01-10 Screentec Ky Näppäimistö
US6114645A (en) * 1995-04-27 2000-09-05 Burgess; Lester E. Pressure activated switching device
EP0859467B1 (fr) * 1997-02-17 2002-04-17 E.G.O. ELEKTRO-GERÄTEBAU GmbH Commutateur à effleurement avec capteur à touche
JP2001283672A (ja) * 2000-03-31 2001-10-12 Mitsumi Electric Co Ltd ゲーム用コントローラ入力装置
US6873863B2 (en) * 2001-03-19 2005-03-29 Nokia Mobile Phones Ltd. Touch sensitive navigation surfaces for mobile telecommunication systems
US7154481B2 (en) * 2002-06-25 2006-12-26 3M Innovative Properties Company Touch sensor

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Title
See references of WO2005059935A3 *

Also Published As

Publication number Publication date
WO2005059935A2 (fr) 2005-06-30
WO2005059935A3 (fr) 2005-09-29
DE10361350A1 (de) 2005-07-14

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