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EP2697568B1 - Élément de commande et appareil électroménager - Google Patents

Élément de commande et appareil électroménager Download PDF

Info

Publication number
EP2697568B1
EP2697568B1 EP12711653.1A EP12711653A EP2697568B1 EP 2697568 B1 EP2697568 B1 EP 2697568B1 EP 12711653 A EP12711653 A EP 12711653A EP 2697568 B1 EP2697568 B1 EP 2697568B1
Authority
EP
European Patent Office
Prior art keywords
operating element
plastic
filler
element according
main body
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.)
Active
Application number
EP12711653.1A
Other languages
German (de)
English (en)
Other versions
EP2697568A1 (fr
Inventor
Stéphane CLAUSS
Martin Oberhomburg
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
BSH Hausgeraete 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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to EP12711653.1A priority Critical patent/EP2697568B1/fr
Priority to PL12711653T priority patent/PL2697568T3/pl
Publication of EP2697568A1 publication Critical patent/EP2697568A1/fr
Application granted granted Critical
Publication of EP2697568B1 publication Critical patent/EP2697568B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
    • G05G1/10—Details, e.g. of discs, knobs, wheels or handles
    • 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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20732—Handles
    • Y10T74/20834—Hand wheels
    • Y10T74/2084—Knob or dial

Definitions

  • the invention relates to an operating element for household appliances, in particular a control knob for a thermal household appliance. Furthermore, the invention relates to a household appliance with at least one control knob.
  • control elements such as control knobs
  • plastic gag is often used. But these do not convey the high-quality feeling of metal gags.
  • plastic toggle metallic It is known to coat plastic toggle metallic.
  • a household appliance is described with a plastic control element, which is outweighed with a nickel coating.
  • the nickel coating is further provided with a noble metal coating, which improves the resistance of the operating element to external influences.
  • An advantage here is that the visual impression of the gag is very good.
  • a disadvantage is that the sense of touch continues to correspond to the tactile sensation imparted by plastic.
  • the usually very thin metallic layer is not sufficient to give a good feeling of metal to the user.
  • metal feeling herein is meant the feeling imparted to the user when touching a metallic body.
  • a metallic body usually feels cold or cool to the user even when the body has room temperature, for example.
  • gags made of aluminum-zinc alloys Al-Zn alloy
  • Zamak Zamak
  • Object of the present invention is thus to provide a plastic operating element, in particular a plastic control knob, which gives the user the feeling of a metal gag there.
  • a plastic operating element in particular a plastic control knob, which gives the user the feeling of a metal gag there.
  • both the visual impression and the sense of touch should be considered.
  • the invention is based on the finding that this object can be achieved by using as the material for the operating element a plastic which has a filling.
  • an operating element for a household appliance wherein the operating element has a base body made of plastic.
  • the operating element is characterized in that the plastic is mixed with filler, which has a higher thermal conductivity than the plastic.
  • an operating element an element is referred to in the context of the invention, controlled by the functions and services of the household appliance by the user, that is controlled or adjusted, can be.
  • the operating element here is preferably a mechanical operating element, in particular a switch or toggle.
  • a mechanical control element in this context, an operating element is referred to, which is mechanically actuated by the user.
  • Other functions of the control element can be performed electrically or otherwise.
  • domestic appliances are in particular heat-conducting domestic appliances, such as ovens, stoves and cooking stoves.
  • control element according to the invention can also be used, for example, in large appliances of white goods, such as, for example, refrigerators, freezers, freezers, electric cookers, washing machines, dishwashers, extractor hoods and tumble dryers.
  • control element according to the invention can also be used on small appliances, such as a toaster.
  • the part of the control element is referred to, on which the user exerts the force for actuating the operating element.
  • the main body thus represents the part of the operating element which is touched or grasped by the user.
  • the contact or the encompassing takes place indirectly, that is to say over the coating.
  • the plastic is mixed with filler, which have a higher thermal conductivity than the plastic.
  • the plastic is preferably a polymer.
  • a filler is understood as meaning a plastic in which filler is incorporated or incorporated in a plastic matrix.
  • the plastic is thus interspersed with the filler.
  • the filler is uniformly distributed in the plastic or the plastic matrix.
  • the thermal conductivity is referred to in particular as the specific thermal conductivity ( ⁇ ).
  • the control element By providing in the base body filler with higher thermal conductivity in the plastic, the control element can be produced on the one hand cost. On the other hand, however, by increasing the thermal conductivity of the main body due to the addition of the filler, a metallic feel when touching the control element is generated.
  • the present invention makes particular use of the fact that the tactile sensation of metal gags is mainly due to the high thermal conductivity.
  • the handling of a metal gag at ambient temperatures gives a cold feeling.
  • the ambient temperature ( ⁇ 20 ° C) is colder than the skin of the fingers (> 30 ° C) and there is a rapid heat transfer between the toggle and the finger, which gives a cold feeling. This feeling, which can also be called "cool touch", can only be achieved with high thermal conductivity.
  • the thermal conductivity of aluminum is for example ⁇ 200 W / mK and for conventional plastics only 0.2-0.3 W / mK.
  • a plastic gag can not produce the "cool touch". With the control knob according to the invention, however, this "cool touch" can be generated.
  • the fillers are also provided in the plastic, that is distributed in this, damage due to mechanical stress, which can occur in a pure coating is not to be feared.
  • the material thickness of the main body is generally greater, so that the heat transfer can take place over a greater distance in the material.
  • the use of a filled plastic is advantageous since the filler is distributed in the plastic matrix and so on the surface, which is touched by the user - optionally by a coating -, the contact between the skin of the user and the filler is ge employersrleitstet. This achieves the heat transfer necessary to create a metallic feel.
  • filler of higher thermal conductivity is advantageous because it can be added specifically according to the thermal and mechanical requirements and the control can thus be modified according to the desired use.
  • the composition and the amount of filler can be varied.
  • the normal operating temperature of the household appliance in the area of the operating element can be taken into account.
  • the filler is preferably present in particle form in the plastic of the body.
  • the filler may be present as spheres, grains, fibers and / or as a powder.
  • the desired thermal conductivity of the material of the base body can be adjusted in a simpler and more reliable manner in the preferred form of the filler according to the invention as a particle.
  • the material of the filler may be selected from a variety of materials as long as the thermal conductivity of the material is higher than the thermal conductivity of the plastic into which the filler is introduced.
  • metallic fillers according to the invention in particular copper powder or aluminum powder or stainless steel powder.
  • the advantage of metallic fillers is in particular the low acquisition costs and their mechanical strength.
  • metallic fillers and, in particular, copper, for example in the form of powder are advantageous since these, and in particular a plastic offset or filled with same, can also be galvanically coated with materials such as chromium or nickel.
  • copper has a thermal conductivity of 400W / mK and thus already lower amounts of filler sufficient to achieve a desired thermal conductivity of the material of the main body of the control element.
  • ceramic fillers and / or glass fillers such as glass beads, and / or carbon fillers, such as graphite or diamond to use.
  • Other possible fillers include aluminum nitride or boron nitride.
  • the material of the base body has a thermal conductivity of 0.5 to 30 W / mK, preferably from 1 to 20 W / mK.
  • the material of the main body of the plastic is referred to with the incorporated or introduced filler.
  • This thermal conductivity can be adjusted by selecting the material of the fillers and their amount accordingly.
  • the thermal conductivity of the material of the body is preferably increased compared to a pure plastic body, but much lower compared to pure metal bodies.
  • An advantage of this average thermal conductivity is that the operating element can also be used in household appliances in which the operating temperature in the region of the operating element is high. Such household appliances are, for example, gas cookers, which may be integrated in ovens or may be present as a separate household appliance.
  • the volume fraction of the filler in the material of the main body is less than 70%, preferably less than 50%.
  • This amount of fillers has proven to be particularly advantageous in fillers containing copper or made of copper. By this amount of fillers, the properties of the matrix material of the body, that is the plastic, and those of the filler can be optimally combined.
  • the plastic of the base body preferably represents a thermoplastic.
  • the plastic of the base body, which is mixed with the fillers comprises technical polymers, in particular polyamides.
  • polystyrene As technical polymers, inter alia, the following polymers are referred to.
  • Further examples of engineering polymers are PBT (polybutylene terephthalate), polycarbonates (PC), polyoxymethylene (POM), polypropylene (PP), polystyrene (PS) and the like.
  • Polyamides are preferred according to the invention. It has been found that polyamides with fillers according to the present invention, in particular with copper powder, have a suitability for coating, in particular with metallic coatings.
  • the coating preferably represents a metallic coating.
  • the base body being made of a plastic with a filler of higher thermal conductivity
  • the metallic coating is no longer solely responsible for imparting a metallic feel when the operating element is touched.
  • the thickness of the coating can therefore be minimized.
  • the coating preferably has a thickness of less than 0.1 mm.
  • the coating may be, for example, a nickel or chromium plating.
  • the visual impression of the operating element is improved by the metallic coating and, in particular, a metallic appearance is produced.
  • control element is a control knob.
  • an operating element is referred to, which is usually actuated by rotational movement and optionally in addition by axial movement.
  • rotational movement the user is in contact with the operating element for a longer time, so that in this case the advantages of the operating element according to the invention come into play in particular.
  • the control element according to the invention can represent an injection molded part.
  • plastic as the matrix material for the base body, complex shapes of the control element can be easily produced by injection molding become.
  • the injection molding of thermally conductive plastics differs from the injection molding of the pure polymer matrix.
  • By filling the plastic with particles and the increase in the thermal conductivity of the plastic mass is an accelerated transport of thermal energy from the plastic into the colder tool instead.
  • the filled polymer solidifies faster in the edge area and narrows flow paths and cavities.
  • the process control and the process parameters are therefore adapted to these changed material properties in the production of a control element according to the invention.
  • the injection speed and the injection pressure are preferably increased in comparison to processes with pure plastic.
  • the invention relates to a household appliance with at least one control element, wherein at least one of the control elements represents an inventive control element.
  • the control element on a base made of plastic, wherein the plastic is mixed with filler, which has a higher thermal conductivity than the plastic.
  • the household appliance represents a cooking point, in particular a gas hob.
  • the advantages of the present invention in particular the adjustable or set thermal conductivity of the control element, come particularly to bear.
  • control element according to the invention applies - as far as applicable - accordingly for the household appliance according to the invention and vice versa.
  • FIG. 1 is a schematic sectional view of an embodiment of an operating element 1 according to the invention shown.
  • this consists of a main body 10 and an axle 11.
  • the main body 10 is provided with a coating 12 on its outer side.
  • the main body 10 and the axle 11 are shown as separate components in the illustrated embodiment, it is within the scope of the invention that they form an integral, that is a single, component.
  • the control element 1 is in the illustrated embodiment, a rotationally symmetrical control knob, which can be rotated about the axis of rotation D of the axle 11.
  • a lid which represents a part of the base body 10 in the illustrated embodiment.
  • the control element 1 with other elements such as an actuating shaft (not shown) can be connected.
  • the base body 10 is provided with a coating 12.
  • the control knob 1 grooves 13 are also introduced at the closed end, which facilitate rotation of the control knob 1 for the user.
  • Advantages of the present invention include a noble appearance, brushed stainless steel, for example.
  • an inventive control element in particular a control knob according to the invention has a "cool touch" effect. Compared to a pure metal gag, the operating element according to the invention also allows higher operating temperatures.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Cookers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Claims (12)

  1. Élément de commande pour un appareil ménager, dans lequel l'élément de commande (1) présente un bâti (10) en plastique, caractérisé en ce que le plastique est mélangé à de la matière de remplissage qui présente une conductivité thermique supérieure à celle du plastique.
    Le mélange à de la matière de remplissage consiste ici en une matière de remplissage insérée ou intégrée à une matrice en plastique.
  2. Élément de commande selon la revendication 1, caractérisé en ce que la matière de remplissage est présente sous forme particulaire, en particulier sous forme de billes, de grains, de fibres ou de poudre.
  3. Élément de commande selon l'une des revendications 1 ou 2, caractérisé en ce que la matière de remplissage comprend des matières de remplissage métalliques, en particulier de la poudre de cuivre, d'aluminium ou d'acier inoxydable, et/ou des matières de remplissage céramiques et/ou des matières de remplissage contenant du verre et/ou des matières de remplissage contenant du carbone.
  4. Élément de commande selon l'une des revendications 1 à 3, caractérisé en ce que la matière du bâti (10) présente une conductivité thermique de 1 à 20 W/mK.
  5. Élément de commande selon l'une des revendications 1 à 4, caractérisé en ce que le pourcentage en volume des matières de remplissage dans la matière du bâti (10) est inférieure à 70%, de préférence inférieure à 50%.
  6. Élément de commande selon l'une des revendications 1 à 5, caractérisé en ce que le plastique du bâti (10) mélangé à la matière de remplissage est un polymère technique, en particulier un polyamide.
  7. Élément de commande selon l'une des revendications 1 à 6, caractérisé en ce que le bâti (10) de l'élément de commande (1) est revêtu.
  8. Élément de commande selon la revendication 7, caractérisé en ce que le revêtement est un revêtement métallique (12).
  9. Élément de commande selon l'une des revendications 1 à 8, caractérisé en ce que l'élément de commande (1) constitue une manette.
  10. Élément de commande selon l'une des revendications 1 à 9, caractérisé en ce que l'élément de commande (1) constitue une pièce moulée par injection.
  11. Appareil ménager avec au moins un élément de commande, caractérisé en ce qu'au moins l'un des éléments de commande est un élément de commande selon l'une des revendications 1 à 10.
  12. Appareil ménager selon la revendication 11, caractérisé en ce que celui-ci est un foyer de cuisson, en particulier un foyer de cuisson à gaz.
EP12711653.1A 2011-04-11 2012-04-03 Élément de commande et appareil électroménager Active EP2697568B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12711653.1A EP2697568B1 (fr) 2011-04-11 2012-04-03 Élément de commande et appareil électroménager
PL12711653T PL2697568T3 (pl) 2011-04-11 2012-04-03 Element obsługowy i urządzenie gospodarstwa domowego

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11290185 2011-04-11
PCT/EP2012/056031 WO2012139926A1 (fr) 2011-04-11 2012-04-03 Élément de commande et appareil ménager
EP12711653.1A EP2697568B1 (fr) 2011-04-11 2012-04-03 Élément de commande et appareil électroménager

Publications (2)

Publication Number Publication Date
EP2697568A1 EP2697568A1 (fr) 2014-02-19
EP2697568B1 true EP2697568B1 (fr) 2016-11-30

Family

ID=45926574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12711653.1A Active EP2697568B1 (fr) 2011-04-11 2012-04-03 Élément de commande et appareil électroménager

Country Status (6)

Country Link
US (1) US10331160B2 (fr)
EP (1) EP2697568B1 (fr)
CN (1) CN103459931A (fr)
ES (1) ES2609777T3 (fr)
PL (1) PL2697568T3 (fr)
WO (1) WO2012139926A1 (fr)

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US20160219885A1 (en) * 2013-09-13 2016-08-04 2387819 Ontario Inc. Antimicrobial material and method of producing same
WO2016068823A2 (fr) * 2014-10-31 2016-05-06 Imren Plastik Sanayi Ve Ticaret Limited Sirketi Capuchon de bouton
DE102015105963B4 (de) 2015-04-20 2018-09-06 Kunststoff Helmbrechts Ag Formteil sowie Verfahren zur Herstellung eines Formteils
USD758825S1 (en) 2015-07-30 2016-06-14 Innovatech, Llc Brake bias adjuster knob
WO2017084681A1 (fr) * 2015-11-19 2017-05-26 Diehl Ako Stiftung & Co. Kg Dispositif de commande, notamment pour appareil domestique électronique
USD786604S1 (en) * 2015-12-30 2017-05-16 Weber-Stephen Products Llc Knob for a gas appliance
USD786650S1 (en) * 2016-01-04 2017-05-16 Weber-Stephen Products Llc Knob for a gas appliance
USD808358S1 (en) 2016-05-03 2018-01-23 George Joseph Dennis Headphone
DE102017209056A1 (de) 2017-05-30 2018-12-06 BSH Hausgeräte GmbH Bedienelement für ein Haushaltsgerät und Haushaltsgerät
US10189414B1 (en) * 2017-10-26 2019-01-29 Ford Global Technologies, Llc Vehicle storage assembly
USD834914S1 (en) 2017-11-14 2018-12-04 Innovatech, Llc Brake bias adjuster knob
USD867850S1 (en) * 2017-11-20 2019-11-26 As America, Inc. Faucet dial
USD891901S1 (en) * 2019-04-05 2020-08-04 Dormakaba Usa Inc. Knob
USD914637S1 (en) * 2020-05-11 2021-03-30 Guifeng Shen Headphone
USD1003856S1 (en) * 2021-09-10 2023-11-07 Shenzhen Wonderhuge Electronics Co., Ltd Headphone
CL2022000946S1 (es) * 2021-10-22 2022-08-26 Shenzhen Shokz Co Ltd Auricular

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Also Published As

Publication number Publication date
WO2012139926A1 (fr) 2012-10-18
CN103459931A (zh) 2013-12-18
EP2697568A1 (fr) 2014-02-19
PL2697568T3 (pl) 2017-04-28
US20140013897A1 (en) 2014-01-16
US10331160B2 (en) 2019-06-25
ES2609777T3 (es) 2017-04-24

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