EP3165990B1 - Steuervorrichtung für elektrische geräte, insbesondere für öfen oder kochplatten - Google Patents

Steuervorrichtung für elektrische geräte, insbesondere für öfen oder kochplatten Download PDF

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Publication number
EP3165990B1
EP3165990B1 EP16193345.2A EP16193345A EP3165990B1 EP 3165990 B1 EP3165990 B1 EP 3165990B1 EP 16193345 A EP16193345 A EP 16193345A EP 3165990 B1 EP3165990 B1 EP 3165990B1
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EP
European Patent Office
Prior art keywords
knob
command device
support shaft
support
damping portion
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Active
Application number
EP16193345.2A
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English (en)
French (fr)
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EP3165990A1 (de
Inventor
Marco Dal Pont
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Berto's SpA
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Berto's SpA
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Publication of EP3165990A1 publication Critical patent/EP3165990A1/de
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    • 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
    • G05G1/12—Means for securing the members on rotatable spindles or the like
    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G25/00—Other details or appurtenances of control mechanisms, e.g. supporting intermediate members elastically
    • G05G25/04—Sealing against entry of dust, weather or the like

Definitions

  • the present invention refers to a command device for electrical appliances, in particular for ovens or stovetops, according to the preamble of the main independent claim.
  • the present device is intended to be mounted on control panels of electrical appliances in order to allow users to control functional members of the same electrical appliances, such as the electric heating element of an oven or the microwave generator of a microwave oven, or even the gas burner (or another heating means) of a stovetop of a kitchen, in particular for professional use.
  • functional members of the same electrical appliances such as the electric heating element of an oven or the microwave generator of a microwave oven, or even the gas burner (or another heating means) of a stovetop of a kitchen, in particular for professional use.
  • the present invention is therefore inserted in the industrial field of production of electrical appliances and more particularly of accessories and components for electrical appliances.
  • command devices are usually mounted on an interface panel of the electrical appliance, in particular in order to control a functional member thereof such as a gas burner or electrical heating means of a stovetop or of an oven.
  • a functional member thereof such as a gas burner or electrical heating means of a stovetop or of an oven.
  • Such command devices conventionally comprise a knob, easily grippable by the user, in order to rotate it around a central axis thereof so as to make it assume different angular positions adapted to command the operations of a functional member, as mentioned above (e.g. the temperature of an oven).
  • the knob usually cooperates with a control member capable of reading the angular position assumed by the knob and consequently commanding, through a control unit such as a circuit board, the functional member.
  • Such control member can for example be constituted by a rheostat or by an encoder connected to the circuit board in order to command in a controlled manner, in accordance with the angular position assumed by the knob, the functional member and hence for example vary the electrical power supply to an oven or to a heating plant or otherwise vary the opening and closing of an adjustable solenoid valve of the gas of the burner of a stovetop or of an oven.
  • the knob is usually coaxially fixed to the first end of a shaft, which, in turn, is associate at the other second end thereof to the control member, such that the latter can detect, through the reading of the shaft position, the angular position of the knob.
  • Such shaft is usually currently made in a single body, or otherwise it is interrupted by a switch in order to allow the knob to add to its conventional possibility of angular control, also a control function of on/off type.
  • knob and the control member are mechanically connected in a rigid manner to each other, so as to obtain a substantially rigid transmission shaft.
  • the shaft in particular at its connection to the knob, is not free to be being, since it is rigid and additionally fittingly-guided by provided support means which allow a rotatable support thereof.
  • a first main drawback thereof lies in the fact that the knob is susceptible of transmitting the impulse forces or the blows struck by the user following unintentional impact against the knob to the control member, breaking it or compromising the function thereof.
  • the rigidity of the shaft in fact involves that the stresses imparted at the knob are transmitted without damping to the control member which - comprising electrical and electronic components such as those of an encoder or of a rheostat, is thus subject to easy breakage.
  • knob is associated with a professional electrical appliance intended to work for many hours, such as an oven or a stovetop of a restaurant kitchen, it frequently occurs that the user, i.e. the chef, in his/her normal work activity impacts the knobs, until the correct and complete original functionality is compromised.
  • a professional electrical appliance intended to work for many hours, such as an oven or a stovetop of a restaurant kitchen
  • the rigidity of the shaft can otherwise damage the support means associated therewith, the switch possibly interposed or even the permanent bending of the shaft with a consequent loss of axiality - indeed, there may be an imperfect rotation around the axis thereof.
  • a second drawback of the command devices of known type lies in the fact that along the shaft, liquids can flow with a certain ease, such as grease, water etc., along with solid particles which come to compromise the correct operation of the control member.
  • liquids can flow with a certain ease, such as grease, water etc., along with solid particles which come to compromise the correct operation of the control member.
  • the knobs can inadvertently come into contact with many food substances and/or liquids; also in the air, particles of many different foods can be diffused, such as flour, cacao, sugar etc. Consequently, the electronics of the control member of each command device, even if arranged in a position usually distal from the knob, can be easily dirtied if not suitably protected against the infiltration of liquids and powders of undesired particles.
  • Known from patent DE 1907904 is a knob intended to be mounted on a command device, which is made of a single body of plastic material.
  • the knob of known type described in this document is susceptible of absorbing stresses transverse to the rotation axis of the knob itself, by means of an elastic return of the plastic material that formed it.
  • the main drawback lies in the fact that in order to provide such knob with high elasticity, so as to absorb impact with high motion, it is necessary to use plastic materials with high resilience, which are quickly exhausted and little resistant to thermal stresses - which are frequent in electrical appliances such as an oven of an industrial kitchen.
  • JP 2005 259448 A discloses all the features of the preamble of Claim 1.
  • the problem underlying the present invention is therefore that of overcoming the drawbacks manifested by the solutions of known type by providing a command device, in particular for ovens or stovetops, which supports the occasional impact transmitted by the user to a knob thereof projecting from an interface panel of the electrical appliance without compromising the function of the command device and in particular of its provided control member.
  • Another object of the present invention is to provide a command device which allows isolating the control member connected to the shaft of the knob, limiting infiltrations of liquids and undesired particles.
  • Further object of the present invention is to provide a command device which is simple and quick to install and entirely reliable in operation.
  • Another object of the present invention is to provide a command device which is inexpensive and practical to produce.
  • reference number 1 overall indicates the command device, object of the present invention.
  • a command device 1 particularly indicated for being mounted on an interface panel 2 (of which a portion is illustrated in figure 5 ) of an electrical appliance, advantageously constituted by an oven or by a stovetop in particular of a professional kitchen, for such purpose of controlling the electrical power supply to provided heating means of an oven or of a plate.
  • the command device 1 can also be intended for a different electrical appliance in order to command a relative different function thereof, for example in order to command the microwave generator of a microwave oven.
  • the command device 1 comprises, in a per se conventional manner, a knob 3, which is rotatably movable around an rotation axis Y (indicated with the arrow F in figure 2 ), advantageously centered with respect to the knob 3.
  • a support shaft 4 is fixed at a first end 4A thereof to the knob, coaxially with respect to the rotation axis Y, so as to be rotated together with the knob 3 when the latter is manually rotated by the user.
  • the knob 3 is externally covered by a cover 3' with the aesthetic function of concealing the fixing means of the support shaft 4, as better described hereinbelow.
  • the command device 1 also comprises a control device 5, which is associated with the second end 4B of the support shaft 4 and is fixed with respect to the latter in order to detect the angular position thereof.
  • control device 5 is integral with the support means 7 of the command device 5 indicated hereinbelow.
  • the control device 5 is advantageously constituted by an angular position transducer, or by an electronic or electromechanical device capable of converting the position or angular motion into a digital code. It can for example be constituted by a rheostat and preferably by a digital encoder capable of detecting the angular position of the support shaft 4 by means of a coupling, with the second end 4B of the support shaft 4, of mechanical, gravitation, magnetic, capacitive, optical type etc. in accordance with the type of transducer employed.
  • control device 5 is susceptible of actuating an operative member of the electrical appliance, such as an electrical heating element or a microwave generator of an oven or a gas burner of a stovetop.
  • an operative member of the electrical appliance such as an electrical heating element or a microwave generator of an oven or a gas burner of a stovetop.
  • control device 5 controls the operative member of the electrical appliance through an electronic control unit, in particular constituted by a board 6, to which it is electrically connected.
  • the support shaft 4 comprises at least one damping portion 40 made of elastically pliable material, which is capable of exerting an elastic response with respect to bending stresses transverse to the rotation axis Y which were transmitted to the shaft 4 by the knob 3.
  • the aforesaid damping portion 40 of the support shaft 4 is made of a polymer material, advantageously made of an elastomer and in particular rubber.
  • the support shaft 4 is rotatably supported with respect to the interface panel 2 of the electrical appliance through support means 7.
  • the latter in accordance with the embodiment of the example illustrated in the enclosed figures, comprise a substantially cylindrical glass-shaped body 70 which is provided with a concavity 71 directed towards the knob 3, and is intended to be inserted in a circular opening 2' of the interface panel 2 in abutment against the latter with a projecting edge 72 thereof.
  • the support means 7 also comprise a support body 8, fixed within the concavity 71 of the glass-shaped body 70 and provided with a central through duct 73 acting as a guide, which is coaxially centered on the rotation axis Y and traversed by the shaft 4.
  • the support body 8 is fixed to the bottom of the concavity 71 of the glass-shaped body 70 by means of the first screws 74.
  • the support means 7 also comprise screws 75 for fixing the control device 5 and the relative circuit board 6 to the external face of the bottom of the glass-shaped body 70.
  • a shaped bracket 9 is also provided, which is arranged astride the command device 1, has the end feet 9' fixed to the interface panel 2 (e.g. by means of welding or screws) and supports glass-shaped body 70 by means of screws engaged at its bottom.
  • the damping portion 40 of the shaft 4 projects from the through duct 73 of the support body 8 towards the knob 3, since with this it can bend with respect to the end mouth of the through duct 73 which acts as a rotation pin for the bending oscillations of the aforesaid damping portion 40.
  • the support shaft 4 oscillates with respect to its central position.
  • it since it is advantageously extended at least to the mouth of the through duct 73, its bending substantially starts from the same mouth, and from there continues towards the duct 73 fittingly engaged without the possibility of bending.
  • the aforesaid damping portion 40 is provided with grooves 42 which are circumferentially extended for at least one angle and which delimit ribs between them.
  • the knob 3 has a concave form, in particular substantially frustoconical, at whose interior the damping portion 40 of the shaft 4 is substantially positioned.
  • the knob 3 is provided at the base with a perimeter edge, advantageously circular, which is separated from the edge of the opening of the concavity 71 of the glass-shaped body 70 by an annular slit 80 which allows the free tilt of the knob following the bending of the shaft 4.
  • the section of the damping portion 40 of the shaft 4 is sized (e.g. with diameter comprised between 5 and 20 mm) in order to be deformed in a negligible manner following torsional stresses transmitted by the rotation of the knob 3.
  • the same damping portion 40 of the shaft 4 is instead easily tiltable in the part that projects from the through duct 73, given that such part of the shaft 4 which projects from the duct 73 and which is substantially housed in the concavity of the knob 3 has a considerable length, e.g. 20-40 mm, such that a high bending moment is obtained in case of stresses exerted at the external ends of the knob 3, e.g. following impacts of the user, with respect to the pin tip of the shaft 4 that is substantially attained at the mouth of the duct 73 of the support body 8.
  • the damping portion 40 is for example centrally fixed within the concavity of the knob 3 by means of a connection mouth 20.
  • the latter is provided with a first shaped face which is fixed for gluing to the terminal face of the damping portion 40, advantageously counter-shaped with respect thereto, and a second face which is fixed by means of for example a screw to the bottom of the concavity of the knob 3.
  • connection mouth 20 is housed in a seat obtained on the bottom of the knob 3, or defined by a rib projecting from the bottom of the knob 3 and integral therewith, the latter being advantageously obtained via molding of plastic material.
  • the shaft 4 is also susceptible of guidedly sliding through the through duct 73 for an axial travel that is limited between two end stops, corresponding to an internal position and an external position of the same shaft 4 and of the knob 3 fixed thereto.
  • the end stops are defined through the interference between portions of the shaft 4 and of the support body 8.
  • At least one spring 10 is provided between the support body 8 and the shaft 4, which pushes the shaft towards the external position.
  • the shaft slides through the duct 73 and through the spring 10 damps the impact without transmitting the impulse to the control device 5, thus preserving the integrity thereof.
  • an accidental impact of the user can be split, in the more general case, into an orthogonal component transverse to the rotation axis Y which will occur due to the elasticity of the damping portion 40 of the shaft 4, and an axial component which will be absorbed by the spring 10.
  • the shaft 4 also comprises at least one rigid portion 41, which is axially mechanically connected to the damping portion 40, and delimits the second end 4B of the same shaft 4 which is associated with the control device 5.
  • the mechanical coupling between the two portions 40, 41 of the shaft 4 can for example be obtained by fittingly inserting a projecting nose 40' of the damping portion 40 within a first head slot of the rigid portion 41 and fixing it therein, for example via gluing.
  • the rigid portion 41 of the shaft 4 is substantially not susceptible of being deformed to bend and is fittingly guided within the duct 73 along the axial travel of the shaft 4.
  • the duct 73 of the support body 8 is partially closed at the ends by a first and by a second annular cover 11, 12, respectively provided with a first and with a second hole traversed by the shaft 4 and placed aligned with the through duct 73 and with its narrowing, respectively in the face oriented towards the knob 3 and in the face of abutment against the bottom of the glass-shaped body 70.
  • Such covers 11 and 12 are fixed at the top and bottom of the support body 8 for example through screws, and act as first appendages internally projecting from the support body 8.
  • the support shaft 4 is provided with an externally-projecting second appendage 13 obtained with a lap placed at the end of its rigid portion 41 of connection to the damping portion 40.
  • Such second appendage 13 is susceptible of interfering with the first annular cover 11 in order to determine the end stop of the shaft corresponding to its more external position.
  • a gasket 14 is interposed between such second appendage 13 and the cover which prevents liquids and particles from axially sliding along the shaft 4 and hence reaching the control device 5.
  • the second end stop is for example advantageously obtained due to the interference of a further projecting second appendage 15 of the shaft 4, made with a rib of the damping portion 40 outside the duct 73.
  • the two second appendages 13, 15 externally projecting from the shaft 4 are spaced along the rotation axis Y and have the first appendage 11 represented by the first cover interposed.
  • the control device 5 advantageously comprises an encoder provided with a small shaft 50 thereof which is fixed to the second end 4B of the shaft 4, in particular being engaged in a second head slot thereof of the rigid portion 41, e.g. via screwing.
  • the control device 5 and in particular when incorporating the encoder, is susceptible of responding to an axial command of the knob 3 (see arrow F3 in figure 2 ) allowed by the sliding along the rotation axis of the engagement shaft 4.
  • Such axial command determines a further command function of the knob 3, additional to that associated with the rotation of the knob 3 itself.
  • the finding thus conceived therefore attains the pre-established objects.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Control Devices (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)

Claims (9)

  1. Steuervorrichtung, die dazu bestimmt ist, an einer Schnittstellentafel (2) eines Haushaltsgeräts montiert zu werden, umfassend:
    - einen Drehknopf (3), der um eine Rotationsachse (Y) drehbar beweglich ist;
    - eine drehende Trägerachse (4), die an einem ersten Ende (4A) des genannten Drehknopfs (3) koaxial zu der genannten Rotationsachse (Y) befestigt ist;
    - eine Steuervorrichtung (5), die mit dem zweiten Ende (4B) der genannten Trägerachse (4) verbunden und im Verhältnis zu Letzterer ortsfest ist, um deren Winkelposition zu messen;
    wobei die genannte Trägerachse (4) mindestens einen Dämpfungsabschnitt (40) aus elastisch nachgiebigem Werkstoff umfasst, der geeignet ist, auf von dem genannten Drehknopf (3) übertragene Biegekräfte quer zu der genannten Rotationsachse (Y) elastisch zu reagieren;
    wobei der genannte Drehknopf (3) eine konkave Form aufweist, in deren Innerem im Wesentlichen der genannte Dämpfungsabschnitt (40) im Verhältnis zu der genannten Rotationsachse (Y) koaxial positioniert ist;
    wobei die genannte Steuervorrichtung Trägerelemente (7) umfasst, die geeignet sind, die genannte Trägerachse (4) an der Schnittstellentafel (2) des genannten Haushaltsgeräts drehbar zu lagern,
    dadurch gekennzeichnet, dass die genannten Trägerelemente (7) Folgendes umfassen:
    - mindestens einen tassenförmigen Körper (70), der mit einer zu dem genannten Drehknopf (3) gerichteten Konkavität (71) versehen ist;
    - einen Trägerkörper (8), der im Inneren der Konkavität (71) des genannten tassenförmigen Körpers (70) befestigt und mit einem von der genannten Trägerachse (4) überquerten Durchgangskanal (73) versehen ist.
  2. Steuervorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der genannte Dämpfungsabschnitt (40) aus einem Polymerwerkstoff, insbesondere Gummi, besteht.
  3. Steuervorrichtung nach einem beliebigen der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der genannte Dämpfungsabschnitt (40) von dem Durchgangskanal (73) des genannten Trägerkörpers (8) in Richtung des genannten Drehknopfs (3) vorsteht.
  4. Steuervorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die genannte Trägerachse (4) über den genannten Durchgangskanal (73) um einen axialen Hub zwischen einer inneren und einer äußeren Position verschiebbar ist; wobei mindestens eine Feder (10) zwischen dem genannten Trägerkörper (8) und der genannten Trägerachse (4) vorgesehen ist, um Letztere in Richtung der genannten äußeren Position zu schieben.
  5. Steuervorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die genannte Trägerachse (4) mindestens einen axial mit dem genannten Dämpfungsabschnitt (40) verbundenen mechanisch steifen Abschnitt umfasst, der das mit der genannten Steuervorrichtung (5) verbundene zweite Ende der genannten Trägerachse (4) begrenzt.
  6. Steuervorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass:
    der genannte Trägerkörper (8) mit mindestens einem ersten nach innen vorstehenden Ansatz (11) versehen ist,
    die genannte Trägerachse (4) mit zwei nach außen vorstehenden zweiten Ansätzen (13, 15) versehen ist, die im Abstand zueinander entlang der genannten Rotationsachse (Y) mit dem genannten ersten Ansatz (11) dazwischen vorstehend angeordnet sind; wobei Letzter geeignet ist, mit den genannten zweiten Ansätzen (13, 15) zu interferieren und so die Endanschläge des genannten axialen Hubs an der genannten inneren und äußeren Position definiert.
  7. Steuervorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass mindestens einer (13) der außen von der genannten Trägerachse (4) vorstehenden genannten Ansätze (13, 15) in dem Durchgangskanal (73) des genannten Trägerkörpers (8) enthalten ist; wobei der genannte erste Ansatz (11) des genannten Trägerkörpers (8) von einem ersten ringförmigen Deckel definiert wird, der mit einer mit dem genannten Durchgangskanal (73) als Verjüngung des Letzteren angeordneten ersten Öffnung ausgestattet ist, die von der genannten Trägerachse (4) überquert wird und an dem genannten Trägerkörper (8) befestigt ist.
  8. Steuervorrichtung nach einem beliebigen der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der genannte Dämpfungsabschnitt (40) an dem genannten Drehknopf (3) mittels einer Anschlussbuchse (20) befestigt ist, die mit einem profilierten und durch Verkleben an der Endseite des genannten Dämpfungsabschnitts (40) befestigten ersten Profilende ausgestattet ist und insbesondere im Verhältnis zu dem genannten ersten Profilende ein Gegenprofil bildet, und mit einem zweiten mit mindestens einer Schraube an dem genannten Drehknopf (3) befestigten zweiten Ende, wobei die genannte Anschlussbuchse (20) in einem in dem genannten Drehknopf (3) definierten Sitz untergebracht ist.
  9. Steuervorrichtung nach einem beliebigen der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der genannte Dämpfungsabschnitt (40) mit mindestens einer Nut (42) versehen ist, die in mindestens einem Winkel auf dem Umfang verläuft.
EP16193345.2A 2015-10-15 2016-10-11 Steuervorrichtung für elektrische geräte, insbesondere für öfen oder kochplatten Active EP3165990B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUB2015A004681A ITUB20154681A1 (it) 2015-10-15 2015-10-15 Dispositivo di comando per elettrodomestici, in particolare per forni o piani di cottura

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EP3165990A1 EP3165990A1 (de) 2017-05-10
EP3165990B1 true EP3165990B1 (de) 2022-08-24

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IT (1) ITUB20154681A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102572684B1 (ko) 2019-01-11 2023-08-29 엘지전자 주식회사 조리기기
CN112987844B (zh) * 2021-02-24 2022-03-29 中国船舶重工集团公司第七0七研究所九江分部 一种旋转限位阻尼装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2804240B1 (fr) * 2000-01-26 2002-05-17 Dav Dispositif de commande de fonctions electriques dans l'automobile par commutation magnetique
JP2005259448A (ja) * 2004-03-10 2005-09-22 Kojima Press Co Ltd 回転操作型スイッチ構造
JP2008077966A (ja) * 2006-09-21 2008-04-03 Sanden Corp 回動装置
DE102009047683A1 (de) * 2009-12-08 2011-06-09 BSH Bosch und Siemens Hausgeräte GmbH Bedienvorrichtung für ein Hausgerät sowie Hausgerät mit einer derartigen Bedienvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907904A1 (de) * 1969-02-17 1970-10-08 Odenwaelder Kunststoffwerk Dr Bedienungselement,beispielsweise Drehknopf oder Schalterknebel
US5732602A (en) * 1996-03-12 1998-03-31 Schwartz; Noah Handle having resilient material incorporated therein
US7479607B2 (en) * 2006-07-28 2009-01-20 Bose Corporation Control knob with safety feature
US8869822B2 (en) * 2009-03-11 2014-10-28 Victor Equipment Company Gas pressure regulator having energy absorbing features

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2804240B1 (fr) * 2000-01-26 2002-05-17 Dav Dispositif de commande de fonctions electriques dans l'automobile par commutation magnetique
JP2005259448A (ja) * 2004-03-10 2005-09-22 Kojima Press Co Ltd 回転操作型スイッチ構造
JP2008077966A (ja) * 2006-09-21 2008-04-03 Sanden Corp 回動装置
DE102009047683A1 (de) * 2009-12-08 2011-06-09 BSH Bosch und Siemens Hausgeräte GmbH Bedienvorrichtung für ein Hausgerät sowie Hausgerät mit einer derartigen Bedienvorrichtung

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