EP2837989A1 - Interrupteur rotatif pour appareil électrique doté d'un dispositif d'arrêt amélioré - Google Patents

Interrupteur rotatif pour appareil électrique doté d'un dispositif d'arrêt amélioré Download PDF

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Publication number
EP2837989A1
EP2837989A1 EP14178975.0A EP14178975A EP2837989A1 EP 2837989 A1 EP2837989 A1 EP 2837989A1 EP 14178975 A EP14178975 A EP 14178975A EP 2837989 A1 EP2837989 A1 EP 2837989A1
Authority
EP
European Patent Office
Prior art keywords
latching
rotary switch
locking
lugs
shaft
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
EP14178975.0A
Other languages
German (de)
English (en)
Other versions
EP2837989B1 (fr
Inventor
Ales Brecko
Bostjan KOVACEC
Aleksander Strojansek
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 SI201431362T priority Critical patent/SI2837989T1/sl
Publication of EP2837989A1 publication Critical patent/EP2837989A1/fr
Application granted granted Critical
Publication of EP2837989B1 publication Critical patent/EP2837989B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/06—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
    • 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

Definitions

  • the invention relates to a rotary switch with latching device as a control element for electrical appliances, wherein the rotary switch comprises a rotary knob, a shaft and a latching device.
  • the invention also relates to a locking device for rotary switches with two voltage applied to a latching contour locking lugs under spring force.
  • Rotary switch with locking device are often used as controls for electrical appliances to select, for example, different programs in a washing machine.
  • the rotary switches are usually arranged on a front page for the user easily accessible and connected inside the device with an electrical circuit, for example via a rotating field sensor or a sliding contact.
  • a rotary selector known as an operating device of electrical appliances which has a spring-loaded ball catch.
  • the provided with a single or Doppelkugelrastung rotary selector is used in a shaped as a hollow cylinder guide member with internal locking contour.
  • the holder of the rotary selector in the guide part via hook-shaped retaining pin.
  • German Offenlegungsschrift discloses DE 103 23 544 A1 a locking device for a rotary switch or a rotary resistance.
  • Two rounded ends of a leaf spring which are shaped to latching noses lie diametrically on a locking disk, which connected via a rotary axis with a knob.
  • the locking disk is arranged here between a rotary knob and a bearing.
  • the invention has for its object to provide a comparison with the prior art improved rotary switch with locking device as a control for electrical appliances.
  • an improved latching device is to be provided.
  • an improved rotary switch with latching device is to be provided, which can be operated more reliably and without tilting of the latching device.
  • the solution of the problem is achieved by a rotary switch with locking device as a control for electrical appliances.
  • the rotary switch comprises a rotary knob, a shaft, a bearing and the said locking device.
  • the latching device comprises two latching lugs which rest on a latching contour under spring force.
  • the bearing of the shaft is disposed between the knob and the latching device.
  • Electrical appliances are, for example, household appliances such as washing machines, dishwashers or dryers. But it can also be small electrical appliances such as coffee machines or coffee grinders. It can also be power tools.
  • the electrical appliances are powered by electrical energy.
  • the electrical supply is done either by a mains connection or by batteries or rechargeable batteries.
  • the rotary switch can be used in such electrical appliances for selecting various programs and / or for switching on and off. For this purpose, such rotary switches are usually connected either free of contact via a rotary field sensor or by a sliding contact with corresponding contacts on an electrical circuit.
  • the rotary switch according to the invention comprises a rotary knob which is non-rotatably connected via a shaft with a part of the latching device.
  • Rotationally connected means that Rotary knob, shaft and a part of the latching device are rotatable together, and that a rotation of the rotary knob leads by an angle to a rotation of the shaft and a part of the latching device by the same angle. The rotation takes place about a common axis of rotation.
  • the co-rotated part of the locking device is either the locking contour or the unit of the two locking lugs.
  • the latching contour may have elevations.
  • the latching contour may be in the form of a disk or cylinder, with the latching depressions and elevations along the circumference being provided on the inside or the outside. In the case of a substantially circular disk or a cylinder with a substantially circular cross-section, the detent recesses and elevations are formed as deviations from a central position.
  • the latching noses can abut, for example, on opposite sides in the opposite direction to the latching contour.
  • the detents are in a detent recess.
  • the locking lugs are first deflected by the latching contour against the spring force against the central position before they engage the next latching recess again.
  • the force is calculated as the product of the sum of the deflections of the two locking lugs with the spring constant of the spring used.
  • a single locking lug would have to experience the entire deflection alone with the same spring constant in order to produce the same force.
  • the locking recesses would have to have a greater deviation from the central position, whereby a larger locking contour would be necessary for the same number of locking positions.
  • a second oppositely arranged locking lug also makes it possible to compensate for the force of the first latching lug on the shaft. In this way we counteracted tilting of the rotary switch, whereby the operation of the rotary switch is reliable.
  • An inventive rotary switch with locking device allows the user to set a variety of locking positions safely and reproducibly.
  • the interaction of locking lugs with locking contour also gives the user an acoustic and tactile feedback.
  • the bearing of the shaft is arranged according to the invention between the knob and the latching device. This position of the bearing allows the knob to be positioned very close to the bearing, resulting in a particularly short lever arm. As a result, a force exerted by the knob on the shaft, acting perpendicular to the direction of rotation torque is minimized.
  • the rotary switch is therefore much more reliable to use than would be the case with a differently placed bearing. A tilting or clamping of the rotary switch is thereby counteracted particularly successfully.
  • a locking device for rotary switch which includes two voltage applied to a latching contour locking lugs and a shaft.
  • the requirements of the locking lugs are rounded.
  • a support may in this case be a contact point, a contact line or a contact surface between a latching lug and the latching contour.
  • the radius of the rounding of the support is less than two-fifths of the maximum width of the locking lugs.
  • the requirements of the locking lugs are rounded, wherein the radius of the rounding is less than two-fifths of the maximum width the locking lugs is.
  • the radius of the rounding is less than two-fifths of the maximum width the locking lugs is.
  • the rounded support also reduces the friction between the latching lugs and the latching contour, which also reduces the wear on both components.
  • the cross section of the latching lugs lying parallel to the plane of rotation has substantially the shape of a triangle, particularly preferably an isosceles triangle.
  • the radius of the rounding of the support is preferably smaller than half the width of the detent recesses, particularly preferably smaller than two-fifths of the width of the detent recesses, so that the supports of the detents can engage particularly easily in the detent recesses. This also allows a particularly high number of locking positions.
  • the support of the locking lug is flattened, resulting in a trapezoidal cross-sectional area.
  • the spring force with which the latching lugs rest on the latching contour generated by a coil spring.
  • Coil springs are inexpensive and available in almost any size and thickness. This saves costs in the manufacture and maintenance of the rotary switch.
  • the coil spring is a metal spring.
  • leaf springs it is also known to use leaf springs in locking devices.
  • the spring force is generated by a single coil spring. In a particularly preferred manner, however, more than one spring can also generate the spring force.
  • the latching lugs can rest on the latching contour from opposite sides, guided radially inwards relative to the axis of rotation. Then the locking lugs are preferably stored separately on each spring.
  • the springs are preferably arranged so that the spring forces compensate each other.
  • the detents in detent position exert no force on the shaft.
  • this is achieved by supporting the two latching lugs on opposite ends of a common spring.
  • the spring is guided freely movable in the direction of force relative to the shaft.
  • the Spring guided in a hollow cylinder.
  • the locking lugs are guided radially outward with respect to the axis of rotation.
  • Radially guided means radially starting from the axis of rotation or aiming at the axis of rotation.
  • the guide preferably limits the degree of freedom of the movement of the latching noses in one direction.
  • the latching lugs are guided perpendicular to the axis of rotation in a plane.
  • arrangements are also possible in which the detents do not lie in one plane or in which they are not arranged perpendicular to the axis of rotation.
  • the locking lugs can also be arranged parallel to the axis of rotation on radially opposite sides of the axis of rotation and abut against a latching contour which is preferably designed as a latching disc. This results in a resulting force parallel to the axis of rotation, which also acts on the shaft. Preferably, the forces are equalized, so that no torque is applied perpendicular to the axis of rotation on the shaft.
  • the locking lugs are rotatably connected to the knob.
  • the locking lugs on the shaft rotatably connected to the knob.
  • the locking lugs are therefore rotated by rotation of the knob relative to the locking contour.
  • the latching contour is preferably connected in a rotationally fixed manner to the electrical appliance, which means that the latching contour does not rotate relative to the electrical appliance.
  • the locking contour can be connected in a rotationally fixed manner to the rotary knob and the latching lugs can be connected in a rotationally fixed manner to the electrical appliance.
  • the latching lugs are preferably arranged radially inwardly toward the axis of rotation, wherein the latching lugs thereby are preferably arranged perpendicular to the axis of rotation on opposite sides of the axis of rotation.
  • the locking lugs are preferably mounted on separate springs.
  • both springs Preferably, both springs have the same hardness, so that rest at the same deflection, the locking lugs with a force equal amount to the locking contour.
  • the entire circumference of the shaft is enclosed by a bearing.
  • a predominant part of the section of the shaft, which lies between locking device and rotary knob, is enclosed by the bearing.
  • the shaft is guided very precisely and limited to only one rotational degree of freedom about the axis of rotation. This again improves the reliability of the rotary switch.
  • the rotary knob can be displaced in the axial direction. A bearing which encloses a large part of the shaft makes it possible to carry out such a displacement particularly precisely and without tilting.
  • the bearing of the rotary switch in which the shaft is preferably formed as a sliding bearing. This allows a particularly simple and inexpensive design of the camp. But it can also be carried out in a particularly preferred manner as a rolling bearing. In any case, the bearing is designed so that it allows the rotation axis only one rotational degree of freedom, in a particularly preferred manner but also at least one translational degree of freedom.
  • the latching contour has at least two mutually opposite latching depressions.
  • the latching contour has a plurality of latching depressions.
  • the locking contour may also have elevations, whereby, for example, a rotation of the knob can be prevented by more than a complete revolution.
  • the elevations can also be designed such that only a torque peak is generated, whereby advantageously a particular switching position can be displayed.
  • FIG. 1 is a perspective view of a rotary switch 1 with latching device as a control for electrical appliances in an embodiment shown with a scale.
  • the switch housing 4 has a pointer 5 for the scale 2 for reading the rotary switch position.
  • the switch housing 4 comprises fastening means 6 with which the rotary switch can be mounted on an electrical appliance.
  • the knob is completed with a cover 7.
  • Fig. 2 shows the rotary switch 1 off Fig. 1 in an exploded view, wherein the components are shown offset from each other in the axial direction.
  • Two locking lugs 8 and a coil spring 9 are shown offset in the radial direction.
  • the latching device is divided into two components.
  • a detent guide 10 includes a shaft 11 and a radial guide for a coil spring 9 at the two ends of each latching lugs 8 rest.
  • the Coil spring 9 can move in the direction of force.
  • the second component of the latching device is a switch housing 4, which comprises a bearing 12 designed as a slide bearing for the shaft 11 and an inner latching contour.
  • the switch housing 4 and the detent guide 10 are each made in one piece, for example using the injection molding process.
  • the shaft 11 is rotatably connected after insertion into the bearing 12 with a knob 3.
  • 11 detent springs 13 are provided with locking projections at the top of the shaft, which are connectable to corresponding counterparts in the knob 3.
  • the latching lugs 8 are rotatably connected to the knob 3.
  • a switch ring 14 is introduced, which serves as a sliding pad for the knob 3 and also has a pointer 5 for a scale 2.
  • a lid 7 can be removed from the knob 3, whereby openings in the knob 3 are accessible, through which the connection between the knob 3 and shaft 11 can be solved.
  • a sliding contact 15 can be fastened to the latching nose guide 10 on the lower side, so that a connection with the switch electronics 16 is set.
  • Fig. 3A shows a sectional view of the rotary switch 1 after Fig. 1 ,
  • the section runs perpendicular to the plane of rotation through the axis of rotation and along the longitudinal axis of the locking lugs 8.
  • the bearing 12 of the shaft 11 is disposed between the knob 3 and the latching device.
  • the detents 8 are mounted in the detent guide 10 on a coil spring 9, which can move along the direction of force.
  • the two outer edges or tips of the locking lugs 8 are referred to as constraints. Furthermore, located at the top of the shaft 11 latching projections and detent springs 13 are shown, which engage in the corresponding counterparts of the rotary knob 3. This releasable connection mechanism makes it possible to arrange the bearing 12 of the shaft 11 between the knob 3 and the latching device. In addition, in the embodiment shown significantly more than half of the portion of the shaft 11 between locking device and knob 3 is enclosed by the bearing 12. This will be the Rotary switch 1 particularly reliable. When turning the shaft 11 does not tilt and does not get stuck.
  • Fig. 3B is a cross section of the rotary switch after Fig. 1 shown. The section runs through the plane of rotation at the level of the locking lugs 8.
  • the latching device is in a position in which the latching lugs 8 are engaged in a latching recess of a latching contour 17. In locking position, no force acts on the shaft 11.
  • the locking lugs 8 have a substantially triangular cross-section, wherein the apex of the triangle is rounded and the radius of the rounding is less than two-fifths of the maximum width of the locking lugs 8.
  • the tips of the triangles each form the supports of the detents 8.
  • the illustrated detent contour 17 has a plurality of detent recesses.
  • the detent recesses are arranged rotationally symmetrical in this embodiment, so that both detents 8 engage in each case in identically shaped, opposite detent recesses.
  • the embodiment shown also allows a locking contour 17, in which opposite locking recesses are unequal depth.
  • the movable coil spring 9 compensates for this by a translation in the direction of force in each case.
  • latching contour 17 has rounded edges. In conjunction with the rounded supports of the locking lugs 8, the operation of the locking device is particularly wear.
  • the invention makes a rotary switch for electrical appliances in its operation particularly reliable. Due to the balanced distribution of forces in the locking device occur no disturbing torques that can lead to tilting of the shaft in the camp. In addition, the rounded shape of the locking lugs reduces wear and thus extends the life of the rotary switch. Furthermore, the invention enables a particularly cost-effective design of the rotary switch.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP14178975.0A 2013-08-14 2014-07-29 Interrupteur rotatif pour appareil électrique doté d'un dispositif d'arrêt amélioré Active EP2837989B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201431362T SI2837989T1 (sl) 2013-08-14 2014-07-29 Vrtljivo stikalo za električne aparate z uporabo izboljšanih zaskočnih sredstev

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013216088.7A DE102013216088A1 (de) 2013-08-14 2013-08-14 Drehschalter für Elektrogeräte mit verbesserter Rasteinrichtung

Publications (2)

Publication Number Publication Date
EP2837989A1 true EP2837989A1 (fr) 2015-02-18
EP2837989B1 EP2837989B1 (fr) 2019-09-25

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Application Number Title Priority Date Filing Date
EP14178975.0A Active EP2837989B1 (fr) 2013-08-14 2014-07-29 Interrupteur rotatif pour appareil électrique doté d'un dispositif d'arrêt amélioré

Country Status (3)

Country Link
EP (1) EP2837989B1 (fr)
DE (1) DE102013216088A1 (fr)
SI (1) SI2837989T1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3062450A1 (fr) * 2017-01-27 2018-08-03 Air Liquide Medical Systems Dispositif de distribution de gaz a volant rotatif et systeme d’indexation ameliore
WO2020101260A1 (fr) 2018-11-13 2020-05-22 Samsung Electronics Co., Ltd. Bouton et appareil de cuisson doté dudit bouton
CN111926528A (zh) * 2019-04-26 2020-11-13 惠而浦（中国）股份有限公司 旋钮用按压组件及洗衣机
US11975434B2 (en) 2019-07-18 2024-05-07 Defond Electech Co., Ltd Control assembly for use with an electric power tool

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR102017017485B1 (pt) * 2017-08-15 2024-02-06 Weg Drives And Controls Automação Ltda Dispositivo manípulo rotativo e método de montagem para dispositivo manípulo rotativo
CN108563021B (zh) * 2018-03-16 2021-01-22 京东方科技集团股份有限公司 瞳距调节装置、头戴显示设备及逐级调节机构
CN108468783B (zh) 2018-03-21 2020-02-18 京东方科技集团股份有限公司 一种转动机构及其使用方法、头戴显示设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3834390C1 (fr) * 1988-10-10 1989-12-07 Leopold Kostal Gmbh & Co Kg, 5880 Luedenscheid, De
DE20219655U1 (de) * 2001-12-20 2003-03-13 Kostal Leopold Gmbh & Co Kg Schalteinrichtung
DE10234925A1 (de) 2002-07-31 2004-02-19 BSH Bosch und Siemens Hausgeräte GmbH Drehwähler
DE10323544A1 (de) 2003-05-24 2004-12-30 Preh Gmbh Rasteinrichtung für ein dreheinstellbares, elektrisches Bauelement
DE102005001560A1 (de) * 2005-01-13 2006-07-27 Leopold Kostal Gmbh & Co. Kg Drehsteller für elektrische oder elektronische Geräte in einem Kraftfahrzeug
DE102007038547A1 (de) * 2007-08-16 2009-02-19 Leopold Kostal Gmbh & Co. Kg Drehschalter
US20090095614A1 (en) * 2007-10-15 2009-04-16 Panasonic Corporation Click apparatus
DE102008045232A1 (de) * 2008-08-30 2010-03-04 Leopold Kostal Gmbh & Co. Kg Bedienelement für ein elektrisches oder elektronisches Gerät

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4141110A1 (de) * 1991-12-13 1993-06-17 Haschkamp Geb Dreefs Drehwahlschalter mit einer durch eine rastung festlegbaren schaltnockenwelle oder schaltnockenscheibe

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3834390C1 (fr) * 1988-10-10 1989-12-07 Leopold Kostal Gmbh & Co Kg, 5880 Luedenscheid, De
DE20219655U1 (de) * 2001-12-20 2003-03-13 Kostal Leopold Gmbh & Co Kg Schalteinrichtung
DE10234925A1 (de) 2002-07-31 2004-02-19 BSH Bosch und Siemens Hausgeräte GmbH Drehwähler
DE10323544A1 (de) 2003-05-24 2004-12-30 Preh Gmbh Rasteinrichtung für ein dreheinstellbares, elektrisches Bauelement
DE102005001560A1 (de) * 2005-01-13 2006-07-27 Leopold Kostal Gmbh & Co. Kg Drehsteller für elektrische oder elektronische Geräte in einem Kraftfahrzeug
DE102007038547A1 (de) * 2007-08-16 2009-02-19 Leopold Kostal Gmbh & Co. Kg Drehschalter
US20090095614A1 (en) * 2007-10-15 2009-04-16 Panasonic Corporation Click apparatus
DE102008045232A1 (de) * 2008-08-30 2010-03-04 Leopold Kostal Gmbh & Co. Kg Bedienelement für ein elektrisches oder elektronisches Gerät

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3062450A1 (fr) * 2017-01-27 2018-08-03 Air Liquide Medical Systems Dispositif de distribution de gaz a volant rotatif et systeme d’indexation ameliore
WO2020101260A1 (fr) 2018-11-13 2020-05-22 Samsung Electronics Co., Ltd. Bouton et appareil de cuisson doté dudit bouton
EP3850273A4 (fr) * 2018-11-13 2021-11-17 Samsung Electronics Co., Ltd. Bouton et appareil de cuisson doté dudit bouton
US11365887B2 (en) 2018-11-13 2022-06-21 Samsung Electronics Co., Ltd. Knob and cooking appliance having the same
CN111926528A (zh) * 2019-04-26 2020-11-13 惠而浦（中国）股份有限公司 旋钮用按压组件及洗衣机
CN111926529A (zh) * 2019-04-26 2020-11-13 惠而浦（中国）股份有限公司 一种洗衣机用旋钮结构及洗衣机
CN111926530A (zh) * 2019-04-26 2020-11-13 惠而浦（中国）股份有限公司 旋钮用旋转组件及洗衣机
US11975434B2 (en) 2019-07-18 2024-05-07 Defond Electech Co., Ltd Control assembly for use with an electric power tool

Also Published As

Publication number Publication date
SI2837989T1 (sl) 2019-11-29
EP2837989B1 (fr) 2019-09-25
DE102013216088A1 (de) 2015-02-19

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