EP0834892A2 - Dispositif d'indexation et commutateur rotatif pour appareil électroménager avec ce dispositif d'indexation - Google Patents

Dispositif d'indexation et commutateur rotatif pour appareil électroménager avec ce dispositif d'indexation Download PDF

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Publication number
EP0834892A2
EP0834892A2 EP97110170A EP97110170A EP0834892A2 EP 0834892 A2 EP0834892 A2 EP 0834892A2 EP 97110170 A EP97110170 A EP 97110170A EP 97110170 A EP97110170 A EP 97110170A EP 0834892 A2 EP0834892 A2 EP 0834892A2
Authority
EP
European Patent Office
Prior art keywords
locking
roller
locking element
plastic
latching
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Withdrawn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
EP97110170A
Other languages
German (de)
English (en)
Other versions
EP0834892A3 (fr
Inventor
Knut Schneider
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.)
AEG Hausgeraete GmbH
Original Assignee
AEG 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 AEG Hausgeraete GmbH filed Critical AEG Hausgeraete GmbH
Publication of EP0834892A2 publication Critical patent/EP0834892A2/fr
Publication of EP0834892A3 publication Critical patent/EP0834892A3/fr
Withdrawn legal-status Critical Current

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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
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/11—Movable parts; Contacts mounted thereon with indexing means
    • H01H19/115—Movable parts; Contacts mounted thereon with indexing means using molded elastic parts only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H2009/0077—Details of switching devices, not covered by groups H01H1/00 - H01H7/00 using recyclable materials, e.g. for easier recycling or minimising the packing material

Definitions

  • the invention relates to a latching device and a step rotary switch for a household appliance.
  • a locking device for an electrical rotary switch is known with a movable bar inserted in an insulating base of the switch, which with a roller-shaped buckling into the recess of a star-like plate of a rotatable shaft (camshaft) due to the effect by at least two coil springs.
  • the recesses of the locking star define a locking position for the rotatable shaft.
  • the invention is based on the object, a special one Specify locking device that manufactured inexpensively and can be easily recycled.
  • a step rotary switch is also intended for a household appliance, especially one Oven can be specified with such a locking device.
  • the locking roller and the locking element in a plastic housing arranged.
  • the locking element and at least a part of the plastic housing from a molded part educated.
  • the locking element can in particular be symmetrical be.
  • the latching roller is arranged around a rotatable shaft and can preferably be pushed or plugged onto the shaft.
  • the latching roller has a plurality of recesses arranged one behind the other in the circumferential direction on, with each recess a predetermined locking position defined for the locking element.
  • this is Detent element essentially free in the engaged state of mechanical forces. This can cause plastic deformation of the plastic locking element due to high temperatures or aging can be reduced.
  • the plastic is preferably PBT, preferably with Glass fiber content used.
  • step rotary switch Knob and the locking roller of the locking device a common Axis of rotation.
  • the Rotary knob preferably via the locking device, with a Rotary potentiometer coupled.
  • the locking roller 3 comprises a locking roller 3, which is rotatable about an axis of rotation 5.
  • the locking roller 3 has along the circumference with respect to the axis of rotation 5 several Recesses (locking slots, locking troughs, locking notches) 30 on, which are separated from each other by detents 31.
  • the locking roller 3 is an elastic (flexible) locking element 2 assigned with a locking pin (locking lever, locking lug, Latching projection) 21, the rotation of the locking roller 3 around Rotation axis 5 in each recess 30 of the locking roller 3 engages and between the two, the recess 30 enclosing Rasthöckern 31 is held until the Torque of the rotation of the latching roller 3 about the axis of rotation 5 exceeds a predetermined amount.
  • the locking pin 21 the locking element 2 is the shape of the Recess 30 of the locking roller 3 adapted, the concave Formation of the recess 30 is a convex formation of the Locking pin 21 corresponds.
  • the ratchet roller 3 can preferably have a star-shaped cross section, the Jag of the star are formed by the detents 31 and the recesses 30 are preferably rounded. The end of the locking pin engaging in the recess 30 21 of the locking element 2 is then rounded off accordingly.
  • the Locking pin 21 preferably tapers to the locking roller 3 there.
  • the locking pin 21 is connected to a bending beam 20, of the locking roller 3 in the radial bending direction 23 is bendable.
  • the bending beam 20 also forms one Part of the locking element 2.
  • the locking pin 21 of the locking element 2 locked in a recess 30 of the locking roller 3 is, the bending beam 20 of the locking element 2 in one relaxed (relieved) state.
  • Will the ratchet roller 3 then rotated further about the axis of rotation 5, so bends the bending beam 20 in the direction of the bending direction 23 upwards and reaches a maximally extended position, when the locking pin 21 on one of the locking humps 31 Latching roller 3 rests.
  • the corresponding bending line 22 in tensioned state of the bending beam 20 of the locking element 2 is designated 22.
  • the locking element 2 is preferably with a cover part 60 a housing 6 integrated into a molded plastic part. Of the Bending beam 20 of the locking element 2 is then through recess formed in the cover part 60 so that the elasticity of the Locking element 2 is guaranteed.
  • the cover part 60 is open placed on a bottom part 61 of the housing 6.
  • the ratchet roller 3 is preferably rotatable about the axis of rotation 5 Shaft 4 pushed on or plugged on and thus releasably attached the shaft 4 attached.
  • the shaft 4 is on a bracket 18, which is provided in the bottom part 61 of the housing 6, mounted.
  • Each of the recesses 30 of the locking roller 3 defines one Locking position for the locking element 2.
  • the number of recesses 30 becomes a predetermined, desired number of rest positions customized.
  • the locking element 2 and the locking roller 3 and preferably also the rotatable shaft 4 and the housing 6 with the bracket 18 consist of at least one plastic.
  • the one for the locking device used is preferably plastic chosen so that its modulus of elasticity varies with temperature changes only slightly up to about 120 ° C., preferably around at most 10%.
  • Polybutylene terephthalate is generally used as the plastic (PBT), particularly suitable with glass fiber content.
  • Polyamide (PA) plastic is also used for shaft 4 suitable.
  • the plastic parts are preferably replaced by a Injection molding process made.
  • FIG 2 shows a view broken away in a longitudinal section the locking device according to FIG 1.
  • the bending beam 20 by providing recesses 7 and 8, which are preferably slit-shaped are formed in the cover part 60 of the housing 6.
  • the shaft 4 has one the housing 6 of the locking device protruding front part 40 on which a rotary knob, not shown (Rotary knob) can be attached to operate the locking device as part of a tap changer.
  • the step rotary switch is then intended in particular for a household appliance, for example for an oven.
  • a Rotary potentiometer 14 coupled so that the rotary movement on Rotary knob about the axis of rotation 5 on the shaft 4 on the Rotary potentiometer 14 is transmitted and a change the electrical voltage output by the rotary potentiometer 14 leads.
  • This voltage change can be used to control Operating modes of the household appliance are used, whereby the operating modes each a rotational angle position of the Not shown rotary knob on the front part 40 of the shaft 4 correspond. Any angular position of the rotary knob for one associated operating mode corresponds to a locking position of the Locking element 2 in the locking roller 3.
  • the number of recesses 30 of the locking roller 3 is thus the number of operating modes (Operating levels) of the step rotary switch adapted.
  • the Rotary potentiometer 14 is preferably on a holding plate 17 attached, which in turn in a designated 15 Plug device is inserted.
  • the plug device 15 is connected to the housing 6 of the locking device.
  • the Bearing 19 for the shaft 4 is formed with the bracket 18 and can in particular have a recess in the holder 18 and / or a snap connection by means of two pins.
  • FIG 3 shows a top view of the locking device of FIG 1 and 2.
  • the two slot-shaped recesses 7 and 8 in the cover part 60 of the housing 6 and formed from the same molded part as the cover part 60 Bending beam 20 between the two recesses 7 and 8 detect.
  • the locking pin 21 hidden in the illustration the locking element 2 is indicated by dashed lines.
  • the bending beam 20 instead of the bending beam 20, another flexible one can also be used Structure through recesses and cutouts in the cover part 60 of the housing 6 can be formed to the flexibility of the locking element 2 to ensure.
  • the cutouts can be made through the choice of plastic material for the locking element 2 and the locking roller 3 the locking behavior of the locking device can be set. For example, in the case of a narrower bending beam 20, i. H. with recesses 7 and 8, the force required to rotate the locking roller 3 is lower, since the opposite force from the locking element 2 is lower is.
  • the locking pin 21 can also be in a further modification Bottom part 61 of the housing 6 may be provided.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Cookers (AREA)
  • Centrifugal Separators (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Manufacture Of Motors, Generators (AREA)
EP97110170A 1996-10-02 1997-06-21 Dispositif d'indexation et commutateur rotatif pour appareil électroménager avec ce dispositif d'indexation Withdrawn EP0834892A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29617151U 1996-10-02
DE29617151U DE29617151U1 (de) 1996-10-02 1996-10-02 Rastvorrichtung und Stufendrehschalter für ein Haushaltsgerät mit einer solchen Rastvorrichtung

Publications (2)

Publication Number Publication Date
EP0834892A2 true EP0834892A2 (fr) 1998-04-08
EP0834892A3 EP0834892A3 (fr) 1999-04-07

Family

ID=8030048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97110170A Withdrawn EP0834892A3 (fr) 1996-10-02 1997-06-21 Dispositif d'indexation et commutateur rotatif pour appareil électroménager avec ce dispositif d'indexation

Country Status (2)

Country Link
EP (1) EP0834892A3 (fr)
DE (1) DE29617151U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999040025A1 (fr) * 1998-02-03 1999-08-12 Acep Inc. Nouveaux materiaux utiles en tant que solutes electrolytiques

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9105419B2 (en) * 2011-11-18 2015-08-11 Motorola Solutions, Inc. Plunger mechanism for switch applications
PL2624095T3 (pl) * 2012-02-06 2015-12-31 Electrolux Home Products Corp Nv Obrotowy wybierak

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3196237A (en) * 1962-07-11 1965-07-20 Ark Les Switch Corp Rotary switch using plastic cover with integral leaf springs as positioning means
DE1301389B (de) * 1966-07-21 1969-08-21 Busch Jaeger Duerener Metall Rastwerk fuer elektrische Drehschalter
DE2711623C2 (de) * 1977-03-17 1986-01-02 Bär Elektrowerke GmbH & Co KG, 5885 Schalksmühle Elektrischer Drehschalter
DE3813115A1 (de) * 1988-04-15 1989-10-26 Schleicher Relais Bereichsumschalter, insbesondere fuer ein elektronisches zeitrelais

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999040025A1 (fr) * 1998-02-03 1999-08-12 Acep Inc. Nouveaux materiaux utiles en tant que solutes electrolytiques
US6365301B1 (en) 1998-02-03 2002-04-02 Acep, Inc. Materials useful as electrolytic solutes
US6841304B2 (en) 1998-02-03 2005-01-11 Acep, Inc. Materials useful as electrolytic solutes
US7378194B2 (en) 1998-02-03 2008-05-27 Acep, Inc. Materials useful as electrolytic solutes
US7901812B2 (en) 1998-02-03 2011-03-08 Acep Inc. Materials useful as electrolytic solutes
US8647780B2 (en) * 1998-02-03 2014-02-11 Acep Inc. Materials useful as electrolytic solutes

Also Published As

Publication number Publication date
EP0834892A3 (fr) 1999-04-07
DE29617151U1 (de) 1998-02-05

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