EP1789983A1 - Commutateur rotatif, notamment pour appareil menager - Google Patents

Commutateur rotatif, notamment pour appareil menager

Info

Publication number
EP1789983A1
EP1789983A1 EP05771984A EP05771984A EP1789983A1 EP 1789983 A1 EP1789983 A1 EP 1789983A1 EP 05771984 A EP05771984 A EP 05771984A EP 05771984 A EP05771984 A EP 05771984A EP 1789983 A1 EP1789983 A1 EP 1789983A1
Authority
EP
European Patent Office
Prior art keywords
contact
rotary switch
rotor
insulating ring
switch according
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.)
Granted
Application number
EP05771984A
Other languages
German (de)
English (en)
Other versions
EP1789983B1 (fr
Inventor
Marjan Mak
Darko Ogrizek
Toni Pogacar
Aleksander Sedovsek
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 Bosch und Siemens 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 Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to SI200532030T priority Critical patent/SI1789983T1/sl
Priority to PL05771984T priority patent/PL1789983T3/pl
Publication of EP1789983A1 publication Critical patent/EP1789983A1/fr
Application granted granted Critical
Publication of EP1789983B1 publication Critical patent/EP1789983B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
    • H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H2019/008—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand with snap mounting of rotatable part on fixed part, e.g. rotor on stator, operating knob on switch panel

Definitions

  • Rotary switch in particular for a household appliance
  • the invention relates to a step rotary switch according to the preamble of claim 1, and a household appliance with such a step rotary switch and a method for mounting such a step rotary switch.
  • a multi-stage rotary switch is known with a stator which consists of an insulating ring with inwardly projecting contact tongues, and a rotor having at least one acting on one side of the contact tongues Umschalttern.
  • a stator which consists of an insulating ring with inwardly projecting contact tongues, and a rotor having at least one acting on one side of the contact tongues Umschalttern.
  • an insulating ring is attached to the stator.
  • the insulating ring has between the contact tongues in the direction of the latter projecting ribs, which are close to the contact tongues, but have no connection with these.
  • the movable changeover contacts are supported when switching from one contact tongue to the next between the contact tongues, so that a short circuit between the contact tongues is effectively avoided.
  • a disadvantage of the prior art is that the structural design of the step rotary switch is very expensive and an adaptation of the step rotary switch to different switching patterns for various electrical devices not possible or only with considerable effort is
  • the object of the invention is to provide a step rotary switch, in particular for household appliances, which has a simple structural design.
  • the installation of the step rotary switch should be simplified.
  • this object is achieved in that the insulating ring corresponding to the sectors formed plug-in receptacles, in which the contact fields are inserted axially.
  • a group of contact fields can be used simultaneously in one step in the insulating ring.
  • different groups of contact fields can be used in identically formed insulating rings in order to To produce step rotary switches having different switching stages. For example, the total number of switching stages and / or the size of the switching angle or angles can be different for a switching stage. It is then also possible to provide a number of switching stages within a step rotary switch, which have different switching angles.
  • the different stage rotary switches have, with the exception of a frame part of sheet metal for the contact fields identical items.
  • individual plug-in receptacles can be omitted for such different switching patterns, that is, not occupied by contact fields, or a plurality of adjacent plug-in receptacles can be occupied by a contact field with a correspondingly enlarged sector angle.
  • the plug receptacles can be provided with radially extending slots, are inserted into the retaining lugs of the contact fields.
  • the retaining lugs are made for example of bendable metal sheet and preferably formed on the contact fields.
  • Each contact field may have a surface in the form of a circular ring sector. The surface is thus designed approximately trapezoidal.
  • a contact pad may have two opposing retaining tabs. If the contact fields are made of a metal sheet, preferably by punching, the retaining lugs are after punching in a plane laterally away from the contact fields. Before mounting the contact pads, the retaining tabs are bent at a right angle to the surface of the contact pad.
  • a number of contact fields in a metal sheet are punched together in one piece.
  • the individual contact fields are arranged according to their later position in the insulating ring on the metal sheet and fixed by a frame part of the metal sheet by means of Haltegrate.
  • a holding part extends from an outer peripheral edge of each contact field radially outward toward the frame part.
  • the frame part with the integrally formed holding plates forms, together with the contact field arrangement and the retaining lugs, a one-piece plug-in part, which is plugged onto the insulating ring, wherein the retaining lugs are inserted through the slots.
  • the free ends of the retaining tabs in the direction of the web sections can be bent outwards, so that the free ends of the retaining tabs engage behind the web sections and fix the contact fields on the insulating ring.
  • the free ends of the retaining lugs can alternatively be bent in the opposite direction.
  • the free ends of the retaining lugs do not engage behind the web sections, but engage behind the bearing surfaces of the plug receptacles for the contact fields.
  • the surfaces of the web sections form the insulating surfaces.
  • Each contact field mounted on the insulating ring is limited by two web sections.
  • the web sections are arranged radially extending laterally of the contact fields.
  • the web sections serve to electrically separate two mutually adjacent contact fields from each other.
  • the web portions can serve as a support surface to support a spring tongue of a switching bridge when moving the contact surface of the spring tongue from one contact field to another contact field. This support prevents the contact surface of the spring tongue from sinking between two contact fields. We prevented a sinking of the contact surface of the spring tongue, so a double contact between both contact fields is prevented and reduces the wear of the contact surface of the spring tongue.
  • the plug-in receptacles can be set back relative to the insulating surfaces.
  • the contact surfaces of the plug-in receptacles are set back relative to the insulating surfaces.
  • the bearing surfaces of the plug receptacles relative to the insulating surfaces are set back so that the surfaces of the contact fields flush with the surfaces of the insulating surfaces.
  • a uniformly flat surface is provided with completely mounted contact pads on the insulating ring over which the contact surface of the spring tongue can slide freely. This reduces the wear of the contact surface of the spring tongue and facilitates the sliding of the contact surface of the spring tongue over the - A -
  • Each plug-in receptacle is assigned an insertion opening for the respective terminal lug of the associated contact field.
  • the terminal lugs are preferably formed integrally with the contact pads, i. the terminal lugs are punched out in one piece together with the contact fields and the retaining lugs from a sheet metal piece.
  • the terminal lugs are bent according to the retaining lugs 90 degrees out of the metal plate plane and inserted into insertion openings on the insulating ring.
  • the insulating ring for rotatably supporting the rotor on a circumferential annular groove, engage in the latching hooks of the rotor.
  • a rotatably operable rotor is rotatably mounted relative to the insulating ring.
  • the rotor may alternatively be attached to a housing of the electrical device, preferably to a household appliance, such as a food processor, or to an electrical circuit board or to the insulating ring, which acts as a stator.
  • latching hooks On the rotor, a number of latching hooks are provided, the locking lugs engage in the groove, so that the rotor is fixed in the axial direction of the insulating ring, but can rotate about the axis.
  • the latching hooks which are preferably formed on the rotor, it is sufficient to snap the rotor on the insulating ring to store it rotatably.
  • the rotor preferably has an axle receptacle into which an axle pin of the actuating element engages.
  • the rotor may be formed directly as an actuator, whereby an axle for a separate actuator is unnecessary.
  • it can separate actuator may be rotatably mounted, for example, on the housing and having an axle, the free end engages the axle of the rotor.
  • a shaft coupling is provided, so that the rotor is rotated by rotating the actuating element.
  • the axle pin can also be provided on the rotor and engage the free end of the axle pin in an axle on the actuating element.
  • the rotor has a holding section for the switching bridge.
  • a switching bridge is understood to mean an electrically conductive connecting piece which electrically connects at least two contact fields predetermined for this switching position in at least one selected rotary position of the step rotary switch. Usually exactly two contact fields are electrically connected to each other in each switching position. In this case, a contact field can be designed to be correspondingly large, so that it extends over several sectors. This contact field thus forms a common ground connection, which is contacted in each switching position of the step rotary switch with a first contact surface of the spring tongue. A second contact surface of the spring tongue changes with the rotation of the rotor a respectively associated second contact field. Thus, a variety of switching positions can be achieved.
  • the switching bridge is therefore rotatably connected to the rotor.
  • the holding section is provided for this purpose on the rotor, to which the switching bridge can be connected.
  • the holding portion is formed as a shape deviating in cross section from the circular shape designed seat, to which the switching bridge is plugged by a matched in the contour of the cross section of the seat recess of the switching bridge.
  • the cross section of the seat can be, for example, square, rectangular, polygonal or star-shaped.
  • a pin arranged at a radial distance from the axis and extending axially may be provided on the rotor.
  • a pin corresponding hole on the jumper allows mounting of the jumper only in the correct angular position in which the pin of the rotor can penetrate into the bore on the jumper.
  • the switching bridge preferably has at least one two-part spring tongue with two circumferentially and angularly offset staggered contact points.
  • the step rotary switch according to the invention is particularly advantageous in household appliances, especially kitchen appliances used.
  • the step rotary switch according to the invention can be quickly assembled from a few, economically producible individual parts in a simple manner. Using largely uniform items for the step rotary switch can be produced by different design of the sheet metal part for the contact arrangement a variety of switching patterns that can be used depending on the electrical function in various household appliances.
  • the invention also relates to a method for mounting a step rotary switch according to the invention.
  • the method comprises the following steps:
  • Figure 1 shows a step rotary switch according to the invention in an exploded view
  • Figure 2 shows the step rotary switch of Figure 1 in an assembled
  • Figure 3 is a plan view of a contact arrangement according to the invention after
  • Figure 4 is a plan view of the contact assembly of Figure 3 after bending
  • FIG. 1 shows a step rotary switch according to the invention which has an insulating ring 1.
  • the insulating ring 1 is formed annular disc-shaped. The upper side is subdivided into a number of segments, each segment being assigned a support surface 2.
  • First bearing surfaces 2a have an annular segment-shaped shape, ie their contour is approximately trapezoidal.
  • a second bearing surface 2b forms a ground connection and extends over a significantly larger segment angle than the smaller first bearing surfaces 2a. Both the support surfaces 2 a and the support surface 2 b are set lower than the top of the insulating ring 1.
  • Each of the recessed bearing surfaces 2 a and 2 b is bounded by two adjacent web sections 3.
  • the web sections 3 have surfaces which form insulating surfaces 4.
  • the insulating surfaces 4 are part of the top of the insulating ring. 1
  • annular groove 5 is introduced at the peripheral edge of the insulating ring 1.
  • the annular groove 5 is formed on one side open at the bottom and limited at the top by a projecting edge of the insulating ring 1.
  • Each support surface 2 are assigned two radially extending slots 6 and at least one insertion opening 7.
  • Each support surface 2a or 2b forms, together with two slots 6 and the at least one insertion opening 7, a plug-in receptacle 8 for each contact field 9.
  • Each contact pad 9 is adapted in shape to the shape of the bearing surface 2, i. each contact pad 9 has a donut-segment-shaped shape, i. its contour is approximately trapezoidal.
  • a terminal lug 1 1 is formed at an edge 10 of the shortest side of the contact pad 9. All terminal lugs 1 1 extend at a right angle to the surfaces of the contact pads 9 and are distributed over an inner circumference.
  • retaining lugs 13 are formed.
  • the retaining lugs 13 extend analogously to the terminal lugs 1 1 at a right angle to the surfaces of the contact pads 9 and are arranged distributed radially over the circumference.
  • a web portion 15 is formed, which projects radially outwardly on an outer circumference.
  • the switching bridge 18 is made of a resilient, electrically conductive material, such as a metal sheet, preferably made of a copper alloy.
  • Switching bridge 18, spring tongues 17 and contact points 16 are preferably formed as a one-piece stamped part.
  • the switching bridge 18 is shown in FIG. 5 and explained in more detail in the associated description of the figures.
  • the switching bridge 18 has a deviating from the circular shape, namely an at least approximately square recess 19 in its center. By means of the recess 19, the switching bridge 18 is attached to a holding portion 20 of a rotor 21.
  • the rotor 21 is rotatable about an axis 22 and has on its upper side an axle receptacle 23 for an axle pin 24 of an actuating element 25.
  • the axle receptacle 23 has a conformal shape in cross section to the cross section of the holding portion 20, wherein the size is reduced accordingly, so that the formed by a recess axle 23 is spatially in the projection formed as a holding portion 20 comes to rest.
  • the axle pin 24 is square in cross-section such that a free end 26 of the axle pin 24 fits positively into the axle 23.
  • the rotor 21 When the axle pin 24 is inserted in the axle receptacle 23, the rotor 21 is rotatable about the axis 22 by rotating a handling section 27 of the actuating element 25, as a result of which the contact points 16 of the switching bridge 18 slide over the contact fields 9 in a circular path.
  • the rotor 21 has a plurality of circumferentially distributed locking hooks 28 which engage in the mounted position of the rotary switch in the annular groove 5 of the insulating ring 1.
  • FIG. 2 shows the rotary switch in assembly.
  • the latching hooks 28 are integrally formed on a cylindrical side wall 29 of the rotor 21.
  • the latching hooks 28 extend in a direction parallel to the axis 22 extending direction.
  • At a free end of the latching hook 28 an inwardly projecting locking lug 30 is formed.
  • the locking lug 30 of the latching hooks 28 engage behind the insulating ring 1 along the annular groove 5.
  • From the insertion openings 7 in the insulating ring 1, the terminal lugs 11 raged out and through a printed circuit board 31.
  • conductor tracks 33 are attached.
  • the terminal lugs 11 are contacted by soldering points 34 electrically to the conductor tracks 33.
  • FIG. 3 shows a metal sheet 35 according to the invention.
  • the metal sheet 35 has an approximately rectangular frame part 36.
  • the frame part 36 has an inner edge 37 which has a substantially circular shape.
  • the web portions 15 extend preferably radially inwardly.
  • the contact pads 9 are attached.
  • the retaining lug 13 is formed.
  • the terminal lug 1 1 is formed.
  • Each contact field 9 is connected to the frame part 36 by at least one web section 15. Larger contact fields, such as a ground contact 38 is connected by a plurality of web sections 15, in particular two web sections 15 to the frame member 36.
  • the metal sheet 35 with the contact arrangement shown in Figure 3 is produced in one step by punching from a sheet metal blank.
  • FIG. 4 shows the stamped sheet metal 35 from FIG. 3 after the bending step. Both the terminal lugs 1 1, as well as the retaining lugs 13 are bent out of the plane of the drawing or the sheet plane addition to a right angle in the plane of the drawing.
  • FIG. 5 shows the switching bridge 18 according to the invention.
  • the switching bridge 18 is at least approximately circular in its outer contour. In the center is the recess 19.
  • the recess 19 is preferably square or at least rectangular.
  • the spring tongues 17 are aligned with the circular disk-shaped switching bridge 18.
  • At the free ends of the spring tongues 17 each have a contact point 16 is attached.
  • one or more contact tongues 17 may be formed in two parts. In this case, the contact tongue 17 two resilient free ends, each free end carries its own contact point 16. Two of these contact points 16 are arranged offset from one another in their angular positions. Alternatively or additionally, the contact points 16 may also be arranged at different radii.
  • a pin 40 is integrally formed on the rotor 21, which is inserted in the mounted position of the switching bridge 18 on the rotor 21 in the bore 39.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

L'invention concerne un commutateur rotatif à galette, comprenant une bague isolante sur laquelle sont maintenus disposés par secteurs et isolés électriquement les uns des autres par des surfaces isolantes, des champs de contact présentant des barrettes, ainsi qu'un rotor pouvant tourner autour d'un axe, dans différentes positions de commutation, sous l'action d'un élément d'actionnement. Ledit rotor porte un pont de commutation pour assurer la connexion électrique d'au moins deux champs de contact dans au moins une des positions de commutation. L'invention vise à mettre au point un commutateur rotatif à galette, notamment pour appareils ménagers, qui soit de conception structurale simple. A cet effet, il est prévu que la bague isolante présente des cavités d'emboîtement conçues de manière correspondante aux secteurs, dans lesquelles les champs de contact sont emboîtés dans le sens axial, ce qui simplifie le montage du commutateur rotatif à galette et permet de l'adapter avec des moyens simples à différents modèles de commutation pour divers appareils électriques.
EP05771984.1A 2004-08-31 2005-08-08 Commutateur rotatif, notamment pour appareil menager Active EP1789983B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200532030T SI1789983T1 (sl) 2004-08-31 2005-08-08 Vrtljivo stikalo, še zlasti za gospodinjski aparat
PL05771984T PL1789983T3 (pl) 2004-08-31 2005-08-08 Przełącznik obrotowy zwłaszcza dla urządzenia gospodarstwa domowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004042085A DE102004042085A1 (de) 2004-08-31 2004-08-31 Drehschalter insbesondere für ein Haushaltsgerät
PCT/EP2005/053884 WO2006024589A1 (fr) 2004-08-31 2005-08-08 Commutateur rotatif, notamment pour appareil menager

Publications (2)

Publication Number Publication Date
EP1789983A1 true EP1789983A1 (fr) 2007-05-30
EP1789983B1 EP1789983B1 (fr) 2015-10-14

Family

ID=35285484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05771984.1A Active EP1789983B1 (fr) 2004-08-31 2005-08-08 Commutateur rotatif, notamment pour appareil menager

Country Status (6)

Country Link
EP (1) EP1789983B1 (fr)
DE (1) DE102004042085A1 (fr)
PL (1) PL1789983T3 (fr)
RU (1) RU2388095C2 (fr)
SI (1) SI1789983T1 (fr)
WO (1) WO2006024589A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7495187B2 (en) 2005-09-02 2009-02-24 Lear Corporation Electrical switch
US8093516B2 (en) * 2007-08-14 2012-01-10 Fluke Corporation Digital multimeter having improved rotary switch assembly
DE102012013011A1 (de) * 2012-06-29 2014-01-02 BSH Bosch und Siemens Hausgeräte GmbH Küchengerät zum Verarbeiten von Nahrungsmitteln mit einem Steuerungsmodul
DE102014104902A1 (de) * 2014-04-07 2015-10-08 Harting Electric Gmbh & Co. Kg Schutzblech für ein Steckverbindersystem
CA3081661C (fr) * 2017-11-22 2023-05-09 Oetiker Ny, Inc. Technologies pour verifier un raccord fluide
RU2751176C1 (ru) * 2020-12-28 2021-07-09 Акционерное общество "Специальное конструкторско-технологическое бюро Кольцова" Многопозиционное переключающее устройство

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GB936279A (en) * 1959-12-07 1963-09-11 Cts Corp Improvements relating to electric switches
GB911472A (en) * 1960-07-11 1962-11-28 Mason Electric Corp Method of making a rotary switch contact component
US3370259A (en) 1964-01-10 1968-02-20 Sarkes Tarzian Multiple contact rotary switch
US3258547A (en) * 1964-06-30 1966-06-28 Stackpole Carbon Co Rotary electrical switches with movable contact means between ganged stator contact sections
DE2014496B2 (de) * 1970-03-25 1972-04-06 Siemens AG, 1000 Berlin u. 8000 München Schaltereinheit fuer miniatur-drehschalter
FR2125688A5 (fr) 1971-02-16 1972-09-29 Chaume Sa Ets
DE2260019C3 (de) 1972-12-07 1983-11-17 Karl 7021 Stetten Glaser Vielfach-Stufendrehschalter mit einem Isolierring
JPS5033763U (fr) 1973-07-23 1975-04-11
FR2272767A1 (en) 1974-05-29 1975-12-26 Seima Process for fixing contacts on switch plates - uses press to feed plates and cut and join contacts from band
US4894492A (en) 1988-09-01 1990-01-16 Palumbo Nicholas R Motor control variable speed reversing switch
DE4216101C1 (en) 1992-05-15 1993-06-24 Leonhardy Gmbh, 8561 Reichenschwand, De Electrical rotary switch with multiple contact positions - has base with inset contact elements that are engaged by rotor coupled contact disc
JP3218246B2 (ja) * 1992-09-03 2001-10-15 マイクロトロニック アクティーゼルスカブ 小型電子位置センサ
JP2000076960A (ja) * 1998-08-31 2000-03-14 Mic Electron Co ロータリースイッチのローターの取付機構
KR20040067330A (ko) * 2003-01-22 2004-07-30 엘지전자 주식회사 모드 스위치 장치

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Title
See references of WO2006024589A1 *

Also Published As

Publication number Publication date
DE102004042085A1 (de) 2006-03-02
PL1789983T3 (pl) 2016-03-31
WO2006024589A1 (fr) 2006-03-09
RU2007106646A (ru) 2008-10-10
RU2388095C2 (ru) 2010-04-27
EP1789983B1 (fr) 2015-10-14
SI1789983T1 (sl) 2016-02-29

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