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WO2008022864A1 - Dispositif de commande pour un appareil électrique - Google Patents

Dispositif de commande pour un appareil électrique Download PDF

Info

Publication number
WO2008022864A1
WO2008022864A1 PCT/EP2007/057587 EP2007057587W WO2008022864A1 WO 2008022864 A1 WO2008022864 A1 WO 2008022864A1 EP 2007057587 W EP2007057587 W EP 2007057587W WO 2008022864 A1 WO2008022864 A1 WO 2008022864A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
operating device
shell
actuating body
light
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.)
Ceased
Application number
PCT/EP2007/057587
Other languages
German (de)
English (en)
Inventor
Bernhard Hofmeister
Ralf Puchta
Bernward Reinker
Willibald Reitmeier
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 EP07787830A priority Critical patent/EP2057654A1/fr
Publication of WO2008022864A1 publication Critical patent/WO2008022864A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H01H19/001—Thumb wheel switches
    • H01H19/003—Thumb wheel switches having a pushbutton actuator
    • 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
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/968—Switches controlled by moving an element forming part of the switch using opto-electronic devices
    • 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
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • 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
    • H01H19/14—Operating parts, e.g. turn knob
    • H01H2019/146—Roller type actuators
    • 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
    • H03K2217/94057—Rotary switches
    • H03K2217/94063—Rotary switches with optical detection
    • 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
    • H03K2217/94057—Rotary switches
    • H03K2217/94068—Rotary switches with magnetic detection

Definitions

  • the present invention relates to an operating device for an electrical device having a mounted on an opening of an outer wall of the device, about a substantially parallel to the outer wall axis rotatable actuating body, and at least one sensor for sensing a position and / or rotational movement of the actuating body.
  • the actuator body In most rotary actuator operating devices, the actuator body is rotatable about an axis substantially perpendicular to the outer wall to which it is mounted. A peripheral surface of the actuating body is exposed over its entire length. Therefore, impurities adhering to the actuator body can not easily get inside the device.
  • an operating device for a domestic appliance is known with an actuating body which is rotatable about an axis parallel to the outer wall.
  • the actuating body is rotatably mounted in a frame which is inserted from the outside into an opening of the outer wall.
  • Sensors for detecting a rotation of the actuating body are arranged on the inside of the outer wall. Tolerances in the manufacture of the frame and in its installation as well as the installation of the sensors can lead to errors in the rotation detection, with the result that the household appliance is not controlled as expected by a user handling the operating device.
  • Object of the invention is therefore to provide an operating device for an electrical device with a rotatable about an outer wall of the device substantially parallel axis actuating body which avoids errors in the rotation detection.
  • the object is achieved in that the opening is deposited on an inner side of the outer wall with a shell in which on the one hand the adjusting body is mounted and on the other hand, a sensor is mounted. Tolerances in the positioning of the actuator and the sensor with respect to each other arise here only by the shell, which can be manufactured with high accuracy
  • the shell can collect from the outside registered impurities, which thus can no longer penetrate into the device interior.
  • the shell is preferably free of passages to the housing interior and closes with its edge close to the outer wall. If the shell closely surrounds the adjusting body, there is also the possibility that penetrated impurities are conveyed out again by friction between the adjusting body and the shell upon actuation of the adjusting body.
  • this is preferably separated from the actuator body by the shell.
  • the senor can be rotationally coupled to the actuating body via a rotary feedthrough.
  • the actuating body with the rotary feedthrough is releasably plug-connected, so that if necessary, the actuating body can be removed from the shell to eliminate impurities from it.
  • the adjusting body has contactless characteristics that can be scanned by the sensor. A rotary feedthrough is then not needed, and since no physical connection between actuator and sensor is required, the removal of the actuator body is facilitated.
  • the non-contact sensor may in particular be a magnetic field sensor, and the non-contact scannable features represent a circumferentially variable distribution of the magnetic flux density in the vicinity of the actuating body.
  • the senor may be an optical sensor.
  • the non-contact scannable features can be a variable in the circumferential direction distribution of the light reflection or transmissivity of the actuator.
  • Such a variable distribution of the light reflectance or transmissivity can be realized in different ways.
  • it may be constituted by alternating directed or diffusely reflecting sections in an annular zone.
  • a light source of the optical sensor expediently illuminates exactly one of these sections, and a photodetector of the optical sensor is arranged in the beam path of a light beam reflected by a directionally reflecting section.
  • alternating sections may also be formed by a light source in the direction of a photodetector of the sensor or in a second direction.
  • the annular zone has alternating reflecting and absorbing sections.
  • the absorbing sections may be dark-tinted surfaces or holes that allow an incident light beam to penetrate into the actuator body.
  • variable distribution of the light reflectance or transmissivity may be formed by transmitting or non-transmissive sections alternating in an annular zone, in which case the photodetector of the optical sensor is arranged to detect transmitted light.
  • the features which can be scanned by the sensor are preferably distributed periodically in the circumferential direction of the adjusting body, and a second sensor is in relation to the Period of this distribution arranged out of phase with the first sensor.
  • the phase offset can take any value other than 0 and ⁇ ; the values are preferred in the circumvention of ⁇ / 2 and 3 ⁇ / 2.
  • the adjusting body is mounted displaceably in the shell transversely to its axis of rotation and a third sensor for detecting a displacement of the actuating body is provided.
  • the rotation of the actuator can be used to select one of various possible operating modes of a device to be operated and confirm the selection by moving the actuator.
  • the third sensor may also be an optical sensor;
  • the adjusting body preferably has two annular zones with different optical properties, of which the third sensor scans the one in a displaced position of the actuating body and the other in a non-displaced position of the actuating body. These optical properties may be the same as those of the first sensor.
  • FIG. 1 shows a schematic section transverse to the axis of rotation by an operating device according to a first embodiment of the invention.
  • FIG. 2 shows a section through the operating device of FIG. 1 along the plane N-II of FIG. 1;
  • FIG. 3 is a perspective view of the end face of the actuating body according to a modification of the first embodiment
  • FIG. 4 shows a section analogous to FIG. 2 according to a second embodiment of the invention
  • FIG. 5 shows a section transverse to the axis of rotation by the operating device of Fig. 4.
  • FIG. 6 shows a section analogous to FIG. 1 according to a third embodiment of the operating device
  • FIG. 7 shows an axially parallel section according to a fourth embodiment
  • FIG 9 shows an axis-parallel section according to a sixth embodiment.
  • Fig. 1 shows a section through an operating device according to the invention according to a first embodiment of the invention.
  • an outside wall 1 of an electrical device to be operated by the device such as a cooker, a washing machine, dishwasher or the like
  • a rectangular window 2 is cut, which is deposited on the inside with a shell 3 of substantially semi-cylindrical shape.
  • An edge of the shell 3 closely adjoins the outer wall 1 so that electrical components inside the device are protected from contaminants which pass through the window 2 into the shell 3.
  • a control body 4 of cylindrical or, as shown here, polygonal prismatic shape and held about a plane perpendicular to the sectional plane of FIG. 1 axis of rotation 6 is rotatably supported.
  • a frame 5 inserted from the outside into the window 2 prevents the actuator body 4 from falling out of the shell 3 and fixes its axis of rotation 6.
  • sections 22 with smooth, directionally reflecting surface and sections 23 with a rough, diffusely reflecting surface are formed alternately, which, when a user rotates the actuator 4, move past a reflection light barrier 24, which is mounted on a front side 12 of the shell 3.
  • the shell 3 is permeable to light emitted and collected by the retro-reflective sensor 24, or, as shown in FIG. 2, has a window 25 permeable to such light.
  • the sections 22, 23 can already be used in the manufacture of the actuator 4 by a molding technique How about injection molding produced by a Form is used with the sections 22, 23 complementary polished or roughened surface portions.
  • the internal structure of the reflection light barrier 24 is, as known per se, not shown in detail here.
  • a light source of the reflection light barrier 24 radiates a focused light beam to the zone 21, and that a photo detector of the light barrier 24 is arranged so that it is struck by the light beam after directed reflection at one of the sections 22 ,
  • the photodetector registers a high light intensity when there is a directionally reflecting portion 22 in front of the light barrier 24, and a low intensity when there is a diffusely reflecting portion 23 there.
  • control electronics not shown
  • a per se known, preferably alphanumeric display can be provided in order to display the operating mode selected by the control electronics to a user.
  • axle journals 10 of the actuating body 4 are in short horizontal grooves 11 at the end faces 12 of the semi-cylindrical shell 3 recorded.
  • Springs 13 keep the axle 10 pressed against the frame 5.
  • an opening is formed in which a projecting into the interior of the shell 3 flexible membrane 8 is arranged and connected tightly with the shell 3.
  • a microswitch 9 is arranged at the side facing away from the actuator body 4 of the membrane 8. A displaceable operating portion of the microswitch 9 engages in the rear concavity of the membrane 8.
  • the user can confirm and activate an operating state selected by the control circuit and displayed by the alphanumeric display by pushing the adjusting body 4 against the force of the springs 13 into the shell 3.
  • the actuator 4 urges the membrane 8 back until it abuts against the microswitch 9 and the latter is actuated.
  • the control circuit detects the operation of the microswitch
  • the membrane 8 and the microswitch 9 could also be arranged by means of a location of one of the springs 13, directly from one of the stub axles
  • portions 22, 23 may also differ in their absorbance for the radiation used by the light barrier 24, that is, if the radiation is visible light, the portions may be colored differently and darkened .
  • the portions 23 are simply designed as openings in the otherwise closed end face of the adjusting body 4, falls through the incident light in the hollow interior of the actuating body 4, whereby also no reflected light reaches the photodetector.
  • Fig. 3 shows a perspective view of the end face of the actuating body according to a further modification.
  • the annular zone 21 is formed by an array of prisms 26 and gaps 27 therebetween.
  • a light beam, which falls from the light source, the light barrier 24 perpendicular to one of the gaps 27, is reflected back from there to the photodetector; If the light beam strikes a surface of one of the prisms 26 oriented at an angle to the axis of rotation 6, it is deflected radially outwards and does not strike the photodetector.
  • the zone 21 can be easily generated when molding the actuator 4 in one operation.
  • Fig. 4 differs from the embodiment of Figures 1 and 2 essentially by the arrangement of the annular zone 21 with directed and diffusely reflecting portions 22 and 23 on the peripheral surface of the actuating body 4 and, accordingly, the attachment of the reflection light barrier 24th in a circumferential surface facing position.
  • the variants mentioned with reference to FIGS. 1 and 2 are possible, in which the sections 22, 23 of the annular zone 21 differ in different optical properties.
  • zone 21 on the peripheral surface of the actuator 4 allows a particularly simple variant in which the nature of the surface of the entire zone 21 is homogeneous: As is clear from the radial section shown in Fig. 5, one of the reflection light barrier 24 in Radial light direction emitted light beam 28 only with maximum intensity back to the photodetector of the same light barrier reflected when it strikes the zone 21 perpendicular. However, this is the case only in the middle of each facet 29 of the circumferential surface of the adjusting body 4. The closer the impact point of the beam 28 is located at an edge between two facets 29, the more the angle of incidence deviates from the vertical, and the stronger the deflection of the reflected beam.
  • the cross-sectional shape of the actuator 4 is sufficient to effectively provide the photodetector with reflective portions 22 in the center of each facet 29 and with less effective reflective portions 23 at the edges thereof.
  • the facets can be made concave in cross-section, as indicated by the dashed line 29 'in FIG. 5 by way of example.
  • a second reflection light barrier 30 is arranged on the shell 3 at an angular distance with respect to the rotation axis 6, which corresponds to three quarters of the angular extent of a facet 29, from the reflection light barrier 24.
  • the two reflection light barriers 24, 30 are of identical design and scan the same zone 21, so that the second light barrier 30 delivers count pulses to the electronic control circuit, which compared to those of the light barrier 24 depending on the direction of rotation of the actuator 4, a phase difference of ⁇ / 2 or 3 ⁇ / 2 have. Based on this phase difference, the control circuit is able to detect the direction of rotation of the actuator 4.
  • FIG. 6 A third embodiment of the operating device according to the invention is shown in FIG. 6 in a section analogous to FIG. 5.
  • the zone 21 with the differently reflecting sections 22, 23 is also arranged in FIG. 6 on the front side of the actuating body 4, and reflection light barriers 24, 30 for scanning the zone 21 are on the front side 12 of the shell 3 of the zone 21 facing mounted. Since the light barriers 24, 30 are outside the cutting plane and would not be visible in the representation, they are only indicated as dashed outlines, and illuminated by them fields on the surface of the actuating body 4 are designated 31.
  • the angular distance between the light barriers 24, 30 is also chosen so that counting pulses with a phase difference of ⁇ / 2 or 3 ⁇ / 2, depending on the direction of rotation of the actuator 4, are obtained.
  • a third reflection light barrier 32 is aligned with an annular zone 33 which is concentric with the axis of rotation 6 and whose reflection behavior is similar to that of the sections 23. Surrounded by this zone 33 is a zone 34 whose reflection behavior corresponds to that of the sections 22. As long as the actuator 4 is rotated normally, the light barrier 32 only scans the zone 33 and provides a constant output signal. If the actuating body 4 displaceably suspended as described with reference to FIGS. 1 and 2 is displaced inside the shell 3, the field 31 illuminated by the light barrier 32 moves on the surface of the actuating body 4 into the zone 34 and the output signal of the light barrier 32 changes yourself. The light barrier 32 can thus perform the same function as the microswitch 9 in the embodiment of FIGS. 1 and 2.
  • FIG. 7 shows a section similar to FIGS. 2, 3 through an operating device according to a fourth embodiment of the invention.
  • the plan view of the end face of the actuating body 4 according to this embodiment is similar to that shown in Fig. 1, although the sections 23 are replaced by holes 35 in the otherwise opaque surface of the actuating body 4. These holes 35 extend, as indicated in Fig. 7, over the entire length of the actuating body 4.
  • a transmission light barrier with a light source 36 and a photodetector 37 is provided which on opposite end faces 12 of the shell. 3 are arranged so that light passes through one of the holes 35 from the light source 36 to the photodetector 37 when the bore 35 is located between the two.
  • the bores 35 may be hollow; otherwise, they may contain a light-conducting fiber bundle. The operation of this operating device does not differ from that of the first embodiment and will therefore not be described again.
  • FIG. 8 shows a section similar to FIGS. 2, 3, 7 through an operating device according to a fifth embodiment of the invention.
  • one of the journals 10 of the actuating body 4 is torque-tightly inserted into a sleeve 38 of a rotary feedthrough 39, from which a shaft 40 passes tightly through an opening of the shell 3 and outside of the shell 3 coupled to a rotation angle sensor 41.
  • the rotation angle sensor 41 is of any type capable of supplying the above-described count pulses and, if necessary, direction information to the electronic control circuit.
  • the adjusting body 4 is pivotable about a pivot point at the level of the sleeve 38 and can be removed from the shell 3 to eliminate dirt from the shell.
  • the adjusting body 4 is mounted again by first one of its journal 10 is inserted into the sleeve 38, then the actuator body 4 is pivoted about the pivot, so that the opposite journal 10 in the groove 1 1 on the sleeve 38 opposite end face 12th the shell 3 engages. Finally, the adjusting body 4 is secured in the shell 3 by attaching the frame 5.
  • the actuating body 4 is cylindrical.
  • a Abtastrad 42 engages through a formed on the side facing away from the outer wall 1 side of the shell 3 slot 43 in the shell 3 and frictionally touches the lateral surface of the actuating body.
  • Sensors 14 are disposed on scan wheel 42 to sense the extent and direction of rotation of the scan wheel.
  • the sensors 14 may be of any of the types mentioned above.
  • the sensors are mounted on a carriage 44, which simultaneously forms a bearing for the axis of the Abtastrades.
  • the carriage is pressed by springs, not shown, against the adjusting body 4 in order to ensure a sufficient frictional engagement between the adjusting body 4 and the sensing wheel.
  • the journal 10 of the actuator 4 are as described above with reference to FIG. 2 by springs 13 pressed against the frame 5. When the actuator 4 is moved against the force of the springs 13, the carriage 44 is moved with and actuates a micro switch. 9

Landscapes

  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

Dispositif de commande pour un appareil électrique, qui comporte un organe de réglage (4) monté rotatif, dans une ouverture (2) ménagée dans une paroi externe (1) de l'appareil, autour d'un axe (6) essentiellement parallèle à la paroi externe (1), et au moins un capteur (24; 36, 37; 41) destiné à détecter un mouvement de rotation de l'organe de réglage (4). L'ouverture (2) est garnie sur la face interne de la paroi externe (1) d'une coque (3) dans laquelle est installé l'organe de réglage (4) et sur laquelle est monté le capteur (24; 36, 37; 41).
PCT/EP2007/057587 2006-08-22 2007-07-23 Dispositif de commande pour un appareil électrique Ceased WO2008022864A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07787830A EP2057654A1 (fr) 2006-08-22 2007-07-23 Dispositif de commande pour un appareil électrique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006039388.0 2006-08-22
DE200610039388 DE102006039388A1 (de) 2006-08-22 2006-08-22 Bedienvorrichtung für ein elektrisches Gerät

Publications (1)

Publication Number Publication Date
WO2008022864A1 true WO2008022864A1 (fr) 2008-02-28

Family

ID=38537952

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/057587 Ceased WO2008022864A1 (fr) 2006-08-22 2007-07-23 Dispositif de commande pour un appareil électrique

Country Status (3)

Country Link
EP (1) EP2057654A1 (fr)
DE (1) DE102006039388A1 (fr)
WO (1) WO2008022864A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009115600A1 (fr) * 2008-03-20 2009-09-24 Preh Gmbh Élément de commande avec un bouton tournant et fonction de touche

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011055319B4 (de) * 2011-11-14 2015-08-27 Visteon Global Technologies Inc. Bedienvorrichtung eines Multifunktionssystems für Kraftfahrzeuge
DE102015011615A1 (de) 2015-09-04 2017-03-09 Audi Ag Bedienvorrichtung zum Steuern einer Funktionseinheit eines Kraftfahrzeugs

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH677426A5 (en) * 1989-03-20 1991-05-15 Landis & Gyr Betriebs Ag Electricity meter with opto-electronic switch
US5825353A (en) * 1995-04-18 1998-10-20 Will; Craig Alexander Control of miniature personal digital assistant using menu and thumbwheel
DE19906386A1 (de) * 1999-02-16 2000-08-31 Siemens Ag Wipptasten-Eingabevorrichtung
EP1085546A2 (fr) * 1999-09-20 2001-03-21 Matsushita Electric Industrial Co., Ltd. Composante électronique à commande rotative avec commutateur poussoir
GB2407363A (en) * 2003-10-23 2005-04-27 Motorola Inc Scroll wheel with sealed housing
DE102004005111A1 (de) * 2004-02-02 2005-08-11 BSH Bosch und Siemens Hausgeräte GmbH Hausgerätebedienvorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH677426A5 (en) * 1989-03-20 1991-05-15 Landis & Gyr Betriebs Ag Electricity meter with opto-electronic switch
US5825353A (en) * 1995-04-18 1998-10-20 Will; Craig Alexander Control of miniature personal digital assistant using menu and thumbwheel
DE19906386A1 (de) * 1999-02-16 2000-08-31 Siemens Ag Wipptasten-Eingabevorrichtung
EP1085546A2 (fr) * 1999-09-20 2001-03-21 Matsushita Electric Industrial Co., Ltd. Composante électronique à commande rotative avec commutateur poussoir
GB2407363A (en) * 2003-10-23 2005-04-27 Motorola Inc Scroll wheel with sealed housing
DE102004005111A1 (de) * 2004-02-02 2005-08-11 BSH Bosch und Siemens Hausgeräte GmbH Hausgerätebedienvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009115600A1 (fr) * 2008-03-20 2009-09-24 Preh Gmbh Élément de commande avec un bouton tournant et fonction de touche

Also Published As

Publication number Publication date
DE102006039388A1 (de) 2008-03-20
EP2057654A1 (fr) 2009-05-13

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